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MINI REVIEW article

Front. Sustain. Food Syst., 27 April 2023
Sec. Sustainable Food Processing
This article is part of the Research Topic Food Loss and Waste Management, From the Grave to the Cradle: A New Resource for the World View all 5 articles

The potential of baru (Dipteryx alata Vog.) and its fractions for the alternative protein market

  • 1Goiano Federal Institute, Rio Verde, Brazil
  • 2Embrapa Instrumentação, São Paulo, Brazil
  • 3Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil

The baru is a native fruit of the Brazilian Cerrado and its processing generates by-products that are normally undervalued and are not included in human food. Among the by-products of baru almond processing–the economically valued part for human consumption–are the broken almond, the partially defatted baru almond cake (DBC) and the pulp [composed of epicarp (peel) plus mesocarp]. Thus, this mini-review presents the potential use of baru (Dipteryx alata Vog.) and its fractions for the alternative protein market. Baru almond and its fractions (DBC and compounds obtained by different extraction methods) stand out for their high protein content (23–30 g/100 g) and, in particular, the by-products can be used as raw material for extraction, separation, hydrolysis, isolation, and concentration of the protein molecules to produce plant-based ingredients. Although it has great potential, including sensory, nutritional, and techno-functional properties, these by-products are still few studied for this purpose.

1. Introduction

Proteins are important components for health, influencing the growth, development, and prevention of various disorders, such as anemia, physical weakness, edema, vascular dysfunction, and impaired immunity, in addition to contributing positively to the increase in lean body mass, increased muscle strength, improve bone density, among other benefits (Wu, 2016; Hertzler et al., 2020).

In food development, in addition to the nutritional role, proteins play important technological properties, contributing to texture, color, flavor, emulsifying, gelling, and water and oil absorption properties in formulation matrices. In addition, proteins act as agents to reduce syneresis and loss of solids during the storage and preparation of some products (Lemes et al., 2016a; Loveday, 2019), which increases the demand in different sectors.

Currently, great emphasis has been given to the offer of proteins and plant-based products for vegans and vegetarians. The profile of the vegan and vegetarian public is focused on the consumption and use of plant-based products (Aleixo et al., 2020). While vegetarians refrain from consuming meat, vegans–often considered to be a group among vegetarians–have a total restriction of products of animal origin in all their needs since this label is more than just a set of dietary preferences (Rosenfeld, 2019; Nezlek and Forestell, 2020). The factors that motivate adherence to this lifestyle can include health, nutrition, environmental impact, and ethics (Bryant, 2019).

Traditionally, plant-based ingredients and products for this target group are produced from cereals, leguminous plants, nuts, seeds, pseudocereals, and mushrooms, which present different sensory characteristics, stability, and nutritional composition, and can be used for the production of various food products, including vegetable milk and meat substitutes, for example (Silva et al., 2020, 2022; Franca et al., 2022).

Additionally, it is necessary to offer proteins to a population that does not stop growing in an increasingly complex scenario (Wu, 2016; Van Dijk et al., 2021), highlighting proteins from alternative sources due to their numerous advantages. Alternative proteins are new protein sources, including plant-based and microorganism technology created as alternatives to conventional ones (animal origin) and that can be applied in the development of the most diverse foods and beverages. This type of protein requires fewer inputs, such as land and water, and generates low negative effects, such as greenhouse gas emissions and pollution (Hertzler et al., 2020; GFI, 2022). In addition, alternative proteins can be obtained and/or produced from various sources, including vegetables (for example, grains, legumes, and nuts), microbial fermentation (fungi and bacteria) (GFI, 2022), and also by extraction from agro-industrial by-products (Lemes et al., 2022).

Plants are considered a suitable system for the bioproduction of proteins (Langyan et al., 2022) and stand out for not containing some of the less-healthy compounds found in meat, including saturated fat and cholesterol (Craig et al., 2021); provide high levels of protein without the high-fat content (Ahnen et al., 2019); improve the environmental sustainability of food production; and also, the ethical issues regarding the treatment of animals (Hertzler et al., 2020).

Obtaining proteins from plants by-products has gained great prominence due to environmental issues and circular economic (Sharma et al., 2022). In this context, it is important to highlight the large amount of by-products generated during baru processing. The baru (Dipteryx alata Vog.) is a fruit species that stands out among the native flora of the Brazilian Cerrado, and its almond is considered the edible part due to its nutritional composition (Takemoto et al., 2001; Alves-Santos et al., 2021).

The global baru almond market was estimated at US$5.1 million in 2022 and could reach up to US$47 million in 2032, due to the compound annual growth rate of ~25% until 2032 driven by the worldwide demand for the almond and the growing number of people looking for more and more healthy products (Fact.MR, 2022). Brazil has more than half of the baru almond cultivation in the world and alone produced about 117 tons of the almond, with the states of Goiás and Mato Grosso do Sul as the largest producers (IBGE, 2020).

Due to its composition–which includes the presence of proteins, minerals, amino acids, fatty acids, phenolic compounds, and others–baru almond and its fractions (oil, partially defatted baru almond cake–DBC, and compounds obtained by different extraction methods) have been the subject of several studies to assess the existence of possible beneficial effects of baru on health (Lima et al., 2022).The beneficial effects of baru almond consumption includes its potential effect to improve metabolic diseases (Souza et al., 2018), serum lipid parameters (Bento et al., 2014), oxidative stress (Souza et al., 2019), colorectal cancer (Oliveira-Alves et al., 2020), microbial infections (Ribeiro et al., 2014), chronic kidney disease (Schincaglia et al., 2020, 2021), and even snake envenomation (Ferraz et al., 2012) as reviewed by Campos et al. (2023). Baru almond, its extracts and/or bioactive compounds, have demonstrated no or low cytotoxicity or genocity (Esteves-Pedro et al., 2012; Ribeiro et al., 2014) and can be used to improve general well-being and bringing benefits to communicable and non-communicable diseases (Egea and Takeuchi, 2020; Lima et al., 2022).

From the processing of the fruits, the almond is obtained, which has a high commercial value (up to US$ 27.00/kg) (CONAB, 2021), in addition to large amounts of peel and pulp, since the almond corresponds to only 5% of the fruit weight (Alves et al., 2010), with an estimated generation of 2,200 tons of by-products annually. Due to the baru composition, especially the high protein content (23–30 g/100 g), high levels of these residual components are found in the by-products, including the DBC, broken almond, among others, which make them an excellent alternative for the production of ingredients destined for the elaboration of plant-based products due to their nutritional and technological properties (Gautério et al., 2022).

Thus, this mini-review presents the potential use of baru almond (Dipteryx alata Vog.) and its fractions (DBC, pulp, and others compounds obtained by different extraction methods) for the alternative protein market.

2. Baru almond processing and generation of by-products

In the process of obtaining the baru almond, different stages are adopted during its processing and, consequently, the generation of several by-products occurs depending on the level of transformation and the technology used, which can be used to obtain components and in the transformation into ingredients, with subsequent application in plant-based foods and beverages (Figure 1).

FIGURE 1
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Figure 1. Baru almond production flowchart, generation of by-products and technological applications in plant-based food. A - baru fruit still on the trees, B - baru fruit and its parts being epicarp, mesocarp, endocarp and almond; and C - baru almond.

After collecting the baru ripe fruits–when they fall to the ground or have loose seeds inside (Sano, 2016), they are transported to the processing unit, selected (Pinho et al., 2015), cleaned, sanitized with a solution of sodium hypochlorite (Sano, 2016), and dried in the sun, oven, wind tunnel (fans), etc. for further processing (Rocha, 2012; Pinho et al., 2015).

Optionally, the fruit hydration stage can be carried out, from submersion in hot water (96°C/20 min) (Pinho et al., 2015) and agitation, in order to facilitate the separation of the endocarp, mesocarp, and epicarp of the baru almond. However, this procedure can entail costs for the process, since there is the use of a large amount of water and electricity, in addition to the need for a greater number of operators. The pulping step has the advantage of reducing the breaking resistance of the endocarp, facilitating the extraction of the almond and is quite feasible when the fruit pulp is also used for other purposes. Because it is a process that is still not standardized and mostly carried out manually, many industries still carry out the separation through the use of knives or guillotines (Sano, 2016), but other options are verified including the use of hammers, sickles, vise, presses, electrical equipment, and other adapted methods (Rocha, 2012).

With pulping, the generation of a solid by-product is verified, consisting of epicarp, endocarp, and mesocarp (Figures 1AC), in addition to broken almonds. The whole almond, intended for human consumption, are submitted to the roasting process (90–145°C for variable times depending on the heat source used) to reduce the antinutritional factors (Rocha, 2012), chilled to room temperature, packed in polyethylene bags (Pineli et al., 2015), the packages are labeled, and stocked in a dry, airy environment, free of pests and rodents, as well as in the absence of light to avoid oxidative processes, a since it has high concentrations of polyunsaturated fatty acids (Mendes et al., 2013; Sano, 2016).

Almonds that present inadequacies or have been broken can be used in the production of crushed almond (flour) or oil (Rocha, 2012). For the extraction of baru oil, a cold pressing system is used, conventional processes using organic solvents, or using compressed solvents technology (Fetzer et al., 2018), among other processes, obtaining two fractions, baru oil, and partially defatted baru almond cake (Aracava et al., 2022), which can be used for extracting proteinaceous material.

All generated baru by-products–except for the endocarp which is used in the production of biotechnological products a such as biocoal and biofuels–are suitable for transformation into food ingredients or starting raw materials to obtain ingredients that can be used in plant-based products. The broken almonds and baru almond cake are the main sources of proteins and dietary fiber (baru pulp has high fiber content but lower protein content), as shown in item “3. Chemical characterization of baru almond and its fractions.” In addition, they can also be used to obtain oil. The application can be carried out simply using appropriate treatments to obtain individual components and/or mixtures of components, which will be added in the new food product, provided they have the necessary properties for sensory, nutritional, functional, and technological purposes (Gautério et al., 2022).

3. Chemical characterization of baru almond and its fractions

The baru almond and its fractions present a diversity of components in their matrix and that can be conveniently explored. Although proteins are highlighted here and play an important role in the development of products, the applied process often results in proteins with different levels of purity, with the presence of other components being verified in smaller proportions. Among the components, the presence of minerals, carbohydrates, and bioactive compounds are verified, which can be isolated in additional processes or used as part of the protein ingredient, contributing to technological, nutritional, functional aspects and, consequently, influencing health (Santiago et al., 2018; Almeida et al., 2019; Egea and Takeuchi, 2020). In this topic we highlight the two main sources of baru proteins–baru almond and partially defatted baru almond cake–but we also present below the fractions with high lipid contents (baru oil with about 80% unsaturated fatty acids) and lower protein contents (baru pulp).

3.1. Baru almond

The baru almond, considered the edible and most economically important part of the baru fruit, has high levels of protein (23–30 g/100 g), dietary fiber (12.5–16.0 g/100 g), (Table 1) carbohydrates (12–37 g/100 g), and mineral (1.5–4.5 g/100 g; Souza et al., 2018; Campidelli et al., 2022), highlighting calcium (82–300 mg/100 g), iron (3.0–6.5 mg/100 g) and zinc (1.04–6.74 mg/100 g), in addition to a considerable amount of potassium (811–1810 mg/100 g) and magnesium (107 to 330 mg/100 g; Alves-Santos et al., 2021). The roasted baru almond has higher concentrations of all components, due to the difference in moisture content verified before and after the roasting process (Takemoto et al., 2001; Santiago et al., 2018).

TABLE 1
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Table 1. Summarized mean values of protein, fibers, and lipids content: (as previously described in item 3) from the baru almond and baru by-products (DBC and pulp) and the potential applications in the development of food products.

Human health can be improved by the consumption of these minerals: potassium decreases systolic blood pressure; magnesium decreases problems related to hypertension and helps to prevent diabetes complications; zinc contributes to immune system; absence of iron has been associated with fatigue and with increased risk of cardiovascular/thromboembolic events; and calcium prevents osteoporosis and fractures in adulthood and old age (Guimarães et al., 2018).

In relation to the amino acid profile and protein quality, a good composition of essential (mg amino acid/g protein) of 23.4 His, 37.5 Ile, 77.8 Leu, 48.4 Lys, 22.0 Met+Cys, 77.2 Phe + Tyr, 44.9 Thr, 20.2 Trp, and 51.8 Val, as well as non-essential amino acids was verified (101.6 Asp., 216.8 Glu, 46.1 Ala, 85.6 Arg, 47.2 Gly, 55.3 Pro, and 44.1 Ser; Fernandes et al., 2010). The concentration of amino acids presents in baru almonds meet dietary recommendations and their amino acid score (AAS) can vary from 75 to 105% according to the native area of the fruit (Fernandes et al., 2010; Freitas and Naves, 2010) in contrast to the deficiency of the amino acids such as methionine + cysteine, valine, and lysine observed in several nuts such as peanuts, almonds, and cashew nuts (Freitas and Naves, 2010).

According to the protein digestibility-corrected amino acid score (PDCAAS)–a recommended method to estimate the nutritional quality of protein in foods and diets–baru almonds demonstrated proteins of good biological quality in their composition (Fernandes et al., 2010). The PDCAAS values of baru almonds (73%) are higher than those found in other oilseeds such as Brazil nuts (63%) (Freitas and Naves, 2010) and almonds (44 to 48%) (House et al., 2019). Cruz et al. (2011) reported that the total protein fraction and the globulin fraction presented in vitro digestibility values of 85.59 and 90.54%, respectively, in relation to casein.

In addition, baru almond has a high lipid content (40.2–48.6%) featuring 41.4–51.4 g/100 g of oleic acid, which is the most abundant monounsaturated fatty acid in this product such as 24.4–31.7 g/100 g of linoleic acid, 5.9–7.6 g/100 of palmitic acid, 3.12–5.4 g/100 g of stearic acid, among others in smaller quantities (Alves et al., 2016; Lemos et al., 2017; Alves-Santos et al., 2021). Baru almond presents a lipid concentration like cashew nut (44.10 g/100 g) and peanut (44.0 g/100 g), and higher concentrations when compared with other traditional oilseeds such as soybeans (20.0 g/100 g), cottonseed (16.0 g/100 g), and sorghum (4.32 g/100 g; Alves et al., 2016; Mailer, 2016; Prado et al., 2020).

Almonds can contribute by providing phenolic compounds (111.3–568.9 mg/100 g) with gallic acid (66.7–224.0 mg/100 g) being considered the main phenolic compound followed by catechin (13.6–87.2 mg/100 g), ferulic acid (3.6–45.4 mg/100 g), epicatechin (2.1–23.9 mg/100 g), and p-coumaric acid (0.3–14.3 mg/100 g; Lemos et al., 2012); carotenoids (11.40 μg/100 g) being α-carotene (19.5 μg/100 g), β-carotene (20.7 μg/100 g), and lycopene (15.1 μg/100 g; Oliveira-Gonçalves et al., 2020); anthocyanins (0.62–1.24 mg/100 g; Lemos et al., 2012); and tocopherol (~2.4 mg/100 g; Lemos et al., 2017). Phenolic compounds play a multiple functionalities and bioactivities such as antioxidant, antihypertensive, and antimicrobial activities, as well as inhibition of carcinogenesis and also are suggested for applications in food as active agents to control lipid oxidation and microbial growth in foods (Lemes et al., 2022).

In general, non-whole almonds that are not used for fresh consumption can be used in the production of oil or other products and have the same composition as the whole almond (Arruda-Silva et al., 2022). However, the issue of conservation of these broken almonds must be checked since they would be more exposed to oxygen and therefore more sensitive to the occurrence of lipid oxidation (Lima et al., 2021). In addition, another issue related to almonds is the skin that covers them, which in many cases ends up being removed. However, most of the available literature has recommended that the skin be an integral part of the almond because it contributes to the nutritional value of the almond (Silva P. N. et al., 2020).

3.2. Baru oil

The main composition of baru oil is the fatty acids, where (i) monounsaturated fatty acids such as oleic acid (45.7 g/100 g total lipids) and eicosenoic acid (2.7 g/100 g total lipids) were described (Borges et al., 2022; Moreira et al., 2022), and in lower concentrations palmitoleic and cis-10-heptadecenoic acids (0.21 g/100 g total lipids; Borges et al., 2022); (ii) polyunsaturated fatty acids such as linoleic (28.93 g/100 g total lipids) and linolenic acids (0.16 g/100 g total lipids); and (iii) saturated fatty acids such as palmitic (6.37 g/100 g total lipids), stearic (5.28 g/100 g total lipids), lignoceric (4.79 g/100 g total lipids), behenic (3.9 g/100 g total lipids), and arachidonic (1.10 g/100 g total lipids) acids (Borges et al., 2022; Moreira et al., 2022), and in lower concentrations tetradecanoic and heptadecanoic acids (0.04 and 0.08 g/100 g total lipids, respectively; Borges et al., 2022). In addition, baru oil also demonstrated the presence of carotenoids (15.68 mg/100 g), lutein (0.91 μg/100 g), α-carotene (1.05 mg/100 g), β-carotene (0.24 mg /100 g), and vitamin A (127.5 μg RE/100 g; Borges et al., 2022). The components found in baru oil are reported to help preserve the characteristics of the oil, provide high stability and also reported for contributing to the reduction the risk of cardiovascular disease (Borges et al., 2022).

3.3. Partially defatted baru almond cake

The DBC is considered a by-product of the cold pressing of the almond to extract the oil (Figure 1). This by-product consists of 12.59–30.2 g/100 g of lipids (Siqueira et al., 2015; Arruda-Silva et al., 2022; Borges et al., 2022), 17.8–34.4 g/100 g of protein, 17.87–34.42 g/100 g of dietary fiber, 3.04–4.12 g/100 g of ash, and 12.93–18.01 g/100 g of carbohydrates on a dry basis (Borges et al., 2022; Moreira et al., 2022). Furthermore, the DBC contains total phenolics of 28.1 mg GAE/100 g and the minerals such as magnesium (194.2 mg/100 g), calcium (47.2 mg/100 g), manganese (14.0 mg/100 g), iron (5.5 mg/100 g), and copper and zinc (1.54 and 2.75 mg/100 g, respectively; Borges et al., 2022).

3.4. Baru pulp

The baru pulp is composed of the epicarp (peel) plus mesocarp (pulp without peel; Alves et al., 2010; Lima et al., 2010; Togashi and Sgarbieri, 2010; Vallilo et al., 2010; Santiago et al., 2018; Almeida et al., 2019; Alves-Santos et al., 2021, 2022). Baru peel presents (g/100 g) 2.5 of proteins, 2.7 of lipids, 2.9 of ash, and 24.1 of dietary fiber. In addition, the peel shows 477 mg GAE/100 g of total phenolic compounds that result in antioxidant activity of 60, 45, and 50 μmol TE/g by ABTS, DPPH, and FRAP methods, respectively (Santiago et al., 2018).

In turn, baru pulp presents (g/100 g) 3.2–5.0 of protein, 0.9–4.13 of lipids, 1.7–3.1 of ash (Lima et al., 2010; Togashi and Sgarbieri, 2010; Vallilo et al., 2010; Santiago et al., 2018; Almeida et al., 2019; Alves-Santos et al., 2021), and 5.7–32.9 of dietary fiber depending on the processing applied (Lima et al., 2010; Togashi and Sgarbieri, 2010; Santiago et al., 2018; Alves-Santos et al., 2021, 2022). Also, was reported for the pulp 292 mg/100 g of total phenolic compounds, especially hesperidin (19 mg/100 g), which result in antioxidant activity of 49, 21.2, and 24.2 μmol TE/g by ABTS, DPPH, and FRAP methods, respectively (Santiago et al., 2018). Minerals such as (mg/100 g) potassium (572), phosphorus (82.2), calcium (75.2), iron (5.94), magnesium (3.9), manganese (3.84), copper (3.54), sodium (1.74), and zinc (1.08) were also reported for baru pulp (Vallilo et al., 2010). Due to its chemical composition, the pulp has shown potential as a prebiotic ingredient (Alves-Santos et al., 2022) being able to act as a non-digestible food ingredients that beneficially affect the host by selectively stimulating the growth and/or activity of one or a limited number of bacterial species already resident in the colon and thus attempt to improve host health (Connerton et al., 2011).

4. Protein extraction from baru almond residue and its fractions

As highlighted in item 3, in the chemical composition of baru and its fractions, the protein content stands out making baru and its fractions an excellent source for plant-based protein extraction (Lemes et al., 2016b). In general, protein extraction methods are based on the isoelectric point of the molecules, considering that the low protein solubility occurs there, which facilitates its separation from the raw material (Munialo et al., 2022). A variety of methods have been used to extract proteins, some methods were developed based on the type of solvent and procedures performed, using heat treatment or not (Mahatmanto et al., 2014; Prado et al., 2020).

The hydrolysis–which can be catalyzed using acids or bases solvents, as well as enzymes–is carried out with the aim of maximizing the biological properties of the encrypted protein molecules, cleaving the peptide bonds and releasing amino acid molecules, decreasing the molecular mass of the protein molecule, and consequently, increased its reactivity (Lemes et al., 2020; Oliveira Filho et al., 2021).

After the extraction and/or hydrolysis process, techniques to recover, concentrate, and purify the obtained biomolecules are carried out. These techniques must be selected considering the specificities of protein hydrolysates which include but are not limited to the physical properties and biological function of the protein (Lemes et al., 2021).

As for the application of these methods in baru and its fractions, only one study reached our knowledge. In this study, which used DBC of baru as raw material, protein extraction (pH 10), followed by precipitation at the isoelectric point, and drying of the isolate was performed. The protein concentrate showed a higher protein content than the DBC and a lower enthalpy, which may be associated with protein denaturation resulting from the isolation process. In general, the application of these techniques (extraction, separation, among others) results in the concentration of the protein content being able to increase by more than 70%, in the case of DBC (Guimarães et al., 2012a). This is still a pioneering study, and more efforts need to be made in this regard.

So far, there are no studies available that use other fractions from baru processing to obtain proteins and, therefore, a great effort must be made to use and take advantage of these by-products.

5. Application of protein from baru almond residue and its fractions

Over the years a substantial amount of knowledge has accumulated about plant protein sources such as soy, peas, lentils, and beans, and less information is available on emerging protein sources such as baru proteins (Munialo et al., 2022). The baru almond has currently been considered an emerging source of vegetable protein due to its protein content, which is higher than that found in some alternative protein sources such as Brazil nuts, cashews, pistachios, and macadamia (9–18 g/100 g; Fernandes et al., 2010; Souza et al., 2015).

In addition to good nutritional characteristics, in order to use alternative proteins in food formulation, it is necessary that baru protein be characterized in terms of their technological properties. Gelling ability, oil and water absorption, solubility, emulsification or foaming capacities are some of the technological properties of proteins that are important in food formulation (Alonso-Miravalles and O’Mahony, 2018). The proteins extracted from the baru almond have the potential for application in various foods and may confer water absorption (193.84%), oil absorption (199.80%), water solubility (~60%), as well as emulsifiers (95.00%) and foamability (50.00%) capacities (Guimarães et al., 2012b). High water absorption capacity and emulsifying property are desirable in analogs of meat products such as meat sausages, demonstrating the potential of baru proteins, which even without having gone through refining processes showed high values for these indices.

Another factor that corroborates its use is that baru almond, pulp, peel, oil, and water-soluble extract have already been properly applied in products (vegan and non-vegan) such as cereal bars (Lima et al., 2010, 2021), “paçoca”–Brazilian peanut candy (Santos et al., 2012), ice cream and frozen yogurt (Pinho et al., 2015; Arelhano et al., 2019), cupcakes (Paglarini et al., 2018), cookies (Pineli Pineli et al., 2015; Caetano et al., 2017), bread (Rocha and Santiago, 2009), pasta (Antunes et al., 2021), and to production of water-soluble extract of baru almond (Fernandes et al., 2021), with an increase in properties such as protein content, fibers, sensory aspects, bioactive properties such as antioxidants, among others nutritional, and techno-functional properties.

Although baru almond proteins are a promising source of good quality vegetable protein for application in the development of new plant-based foods, to our knowledge, no studies were found using baru proteins for the development of food products. Despite this, the results on the properties of baru proteins are encouraging and future studies should explore these proteins to contribute for plant protein supplying.

Table 1 summarizes and highlights the mean content of protein, fibers, and lipids presented in items 3.1 to 3.4. In addition, are presented the applications and potentialities of baru almond and baru by-products which should be considered for application in the development of food products.

Despite the techno-functional potential and low cost, obtaining plant proteins from by-products still presents difficulties related to seasonality, quantity generated, as well as the process of obtaining, geographic location, among other factors. Thus, issues such as the complexity of the chain and its logistical costs, the use of complex and costly processes, energy consumption, and regulatory issues, among others, must be overcome. In this sense, the processing of by-products must overcome several barriers before becoming economically viable, including the need to process large quantities of raw materials, the capacity to process heterogeneous raw materials, integrated logistics with different processing industries, the possibility of the integration process in the processing unit to allow the generation of high-value ingredients, among others (Pintado and Teixeira, 2015; Lemes et al., 2016b, 2022, 2023).

6. Conclusion and future directions

Large amounts of baru by-products are available from almond processing and can be properly converted into proteins and other ingredients for the food industry in addition to being a good protein alternative for vegans and vegetarians. The baru–almond and partially defatted baru almond cake–have been shown to be a significant source of plant-based protein produced from proper extraction and processing once they present high protein content (23–30 g/100 g). Additional studies are necessary to optimize the recovery, separation, and isolation of these molecules, as well as evaluation of the characteristics of the extracts produced.

In addition to nutritional properties, baru demonstrates good technological properties for food and beverage application, including its water absorption capacity, oil absorption, solubility, foaming ability and foam stability. Despite the techno-functional potential and low-cost, obtaining vegetable proteins from by-products is still verified difficulties related to seasonality, quantity generated, as well as the process used to obtain, geographic location, among other factors.

Author contributions

Conceptualization and methodology, MBE, JGOF, SBC, and ACL. Investigation, MBE, JGOF, SBC, and ACL writing—original draft preparation, MBE, JGOF, SBC, and ACL. Writing—review and editing, MBE, JGOF, SBC, and ACL. Funding acquisition, MBE and ACL. All authors have read and agreed to the published version of the manuscript.

Acknowledgments

The authors acknowledge the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior–Brasil (CAPES–Finance Code 001), Conselho Nacional de Desenvolvimento Científico (CNPq), Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Instituto Federal Goiano (IF Goiano/PROPPI, Process nos. 23216.000940.2022-92 and 23218.000930.2023-18), and the Good Food Institute (GFI).

Conflict of interest

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Publisher’s note

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.

Supplementary material

The Supplementary material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fsufs.2023.1148291/full#supplementary-material

References

Ahnen, R. T., Jonnalagadda, S. S., and Slavin, J. L. (2019). Role of plant protein in nutrition, wellness, and health. Nutr. Rev. 77, 735–747. doi: 10.1093/nutrit/nuz028

CrossRef Full Text | Google Scholar

Aleixo, M., Sass, C., Leal, R., Dantas, T., Pagani, M., Pimentel, T., et al. (2020). Using twitter® as source of information for dietary market research: a study on veganism and plant-based diets. Int. J. Food Sci. Technol. 56, 61–68. doi: 10.1111/ijfs.14743

CrossRef Full Text | Google Scholar

Almeida, A. B. D., Silva, A. K. C., Lodete, A. R., Egea, M. B., Lima, M. C. P., and Silva, F. G. (2019). Assessment of chemical and bioactive properties of native fruits from the Brazilian Cerrado. Nutr. Food Sci. 49, 381–392. doi: 10.1108/NFS-07-2018-0199

CrossRef Full Text | Google Scholar

Alonso-Miravalles, L., and O’Mahony, J. A. (2018). Composition, protein profile and rheological properties of Pseudocereal-based protein-rich ingredients. Foods 7:73. doi: 10.3390/foods7050073

PubMed Abstract | CrossRef Full Text | Google Scholar

Alves, A. M., Fernandes, D. C., Borges, J. F., Sousa, A. G. D., and Naves, M. M. V. (2016). Oilseeds native to the Cerrado have fatty acid profile beneficial for cardiovascular health. Rev. Nutr. 29, 859–866. doi: 10.1590/1678-98652016000600010

CrossRef Full Text | Google Scholar

Alves, A. M., Mendonça, A. L. D., Caliari, M., and Cardoso-Santiago, R. D. A. (2010). Avaliação química e física de componentes do baru (Dipteryx alata Vog.) para estudo da vida de prateleira. Pesqui. Agropec. Trop. 40, 266–273. Available at: https://revistas.ufg.br/pat/article/view/6343

Google Scholar

Alves-Santos, A. M., Brito Sampaio, K., Lima, M. S., Coelho, A. S. G., Souza, E. L. D., and Naves, M. M. V. (2022). Chemical composition and prebiotic activity of baru (Dipteryx alata Vog.) pulp on probiotic strains and human colonic microbiota. Food Res. Int. 164:112366. doi: 10.1016/j.foodres.2022.112366

PubMed Abstract | CrossRef Full Text | Google Scholar

Alves-Santos, A. M., Fernandes, D. C., and Naves, M. M. V. (2021). Baru (Dipteryx alata Vog.) fruit as an option of nut and pulp with advantageous nutritional and functional properties: a comprehensive review. NFS J. 24, 26–36. doi: 10.1016/j.nfs.2021.07.001

CrossRef Full Text | Google Scholar

Antunes, G. G. B., Pereira, T. N. A., Santos, J. R. C., and Vargas, M. D. R. (2021). Desenvolvimento e caracterização físico-química de macarrão com substituição parcial da farinha de trigo por farinha de polpa de baru. Res. Soc. Dev. 10, 1–14. doi: 10.33448/rsd-v10i13.21349

CrossRef Full Text | Google Scholar

Aracava, K. K., Capellini, M. C., Gonçalves, D., Soares, I. D., Margoto, C. M., and Rodrigues, C. E. C. (2022). Valorization of the baru (Dipteryx alata Vog.) processing chain: technological properties of defatted nut flour and oil solubility in ethanol and isopropanol. Food Chem. 383:132587. doi: 10.1016/j.foodchem.2022.132587

PubMed Abstract | CrossRef Full Text | Google Scholar

Arelhano, L. E., Candido, C. J., Guimarães, R. D. C. A., and Prates, M. F. O. (2019). Caracterização nutritiva, bioativas e sensorial de frozen yogurt adicionado de castanhas de baru. Interações 20, 257–256. doi: 10.20435/inter.v0i0.1648

CrossRef Full Text | Google Scholar

Arruda-Silva, T., Alves, N., Galle, N., Santos, S., and Andreatta, E. (2022). Thermodynamic properties of the water adsorption process in baru flours. Engenharia Agríc. 42:e20200141. doi: 10.1590/1809-4430-eng.agric.v42n2e20200141/2022

CrossRef Full Text | Google Scholar

Bento, A. P. N., Cominetti, C., Simões Filho, A., and Naves, M. M. V. (2014). Baru almond improves lipid profile in mildly hypercholesterolemic subjects: a randomized, controlled, crossover study. Nutr. Metab. Cardiovasc. Dis. 24, 1330–1336. doi: 10.1016/j.numecd.2014.07.002

PubMed Abstract | CrossRef Full Text | Google Scholar

Borges, L. A., Souto, R. N. B., Nascimento, A. L. A., Soares, J. F., Paiva, C. L., Brandi, I. V., et al. (2022). Chemical characterization of baru oil and its by-product from the northwest region of Minas Gerais, Brazil. Grasas Aceites 73:e460. doi: 10.3989/gya.0447211

CrossRef Full Text | Google Scholar

Bryant, C. (2019). We can’t keep meating like this: attitudes towards vegetarian and vegan diets in the United Kingdom. Sustainability 11:6844. doi: 10.3390/su11236844

CrossRef Full Text | Google Scholar

Caetano, K. A., Ceotto, J. M., Ribeiro, A. P. B., Morais, F. P. R. D., Ferrari, R. A., Pacheco, M. T. B., et al. (2017). Effect of baru (Dipteryx alata Vog.) addition on the composition and nutritional quality of cookies. Food Sci. Technol. 37, 239–245. doi: 10.1590/1678-457x.19616

CrossRef Full Text | Google Scholar

Campidelli, M. L. L., Carneiro, J. D. D. D. S., Souza, E. C. D., Vilas Boas, E. V. D. B., Bertolucci, S. K. V., Aazza, S., et al. (2022). Baru almonds (Dipteryx alata Vog.) and baru almond paste promote metabolic modulation associated with antioxidant, anti-inflammatory, and neuroprotective effects. Innovative Food Sci. Emerg. Technol. 80:103068. doi: 10.1016/j.ifset.2022.103068

CrossRef Full Text | Google Scholar

Campos, S. B., Fernandes, S. S., and Egea, M. B. (2023). “Efeitos benéficos a saúde da ingestão de baru (Dipteryx alata Vog.)” in Baru (Dipteryx alata) Como Fonte de Nutrientes e Matéria-prima Para a Indústria de Alimentos eds. M. B. Egea and S. S. Fernandes (Editora FURG: Porto Alegre), 59–63.

Google Scholar

CONAB. (2021). Baru (Amêndoa)–Série Histórica–Custos–Baru–2010 a 2021. C.N.D. Abastecimento, Companhia Nacional de Abastecimento. Available at: https://www.conab.gov.br/info-agro/custos-de-producao/planilhas-de-custo-de-producao/itemlist/category/840-baru-amendoa.

Google Scholar

Connerton, P. L., Timms, A. R., and Connerton, I. F. (2011). “Using antimicrobial cultures, bacteriocins and bacteriophages to reduce carriage of food-borne bacterial pathogens in poultry” in Protective Cultures, Antimicrobial Metabolites and Bacteriophages for Food and Beverage Biopreservation. ed. C. Lacroix (Sawston, UK: Woodhead Publishing), 181–203.

Google Scholar

Craig, W. J., Mangels, A. R., Fresán, U., Marsh, K., Miles, F. L., Saunders, A. V., et al. (2021). The safe and effective use of plant-based diets with guidelines for health professionals. Nutrients 13:4144. doi: 10.3390/nu13114144

PubMed Abstract | CrossRef Full Text | Google Scholar

Cruz, K. S. D., Silva, M. A. D., Freitas, O. D., and Neves, V. A. (2011). Partial characterization of proteins from baru (Dipteryx alata Vog) seeds. J. Sci. Food Agric. 91, 2006–2012. doi: 10.1002/jsfa.4410

CrossRef Full Text | Google Scholar

Egea, M. B., and Takeuchi, K. P. (2020). “Bioactive compounds in Baru almond (Dipteryx alata Vogel): nutritional composition and health effects” in Bioactive Compounds in Underutilized Fruits and Nuts. eds. H. N. Murthy and V. A. Bapat (Cham: Springer International Publishing), 289–302.

Google Scholar

Esteves-Pedro, N. M., Borim, T., Nazato, V. S., Silva, M. G., Lopes, P. S., dos Santos, M. G., et al. (2012). In vitro and in vivo safety evaluation of Dipteryx alata Vogel extract. BMC Complement. Altern. Med. 12:9. doi: 10.1186/1472-6882-12-9

PubMed Abstract | CrossRef Full Text | Google Scholar

Fact.MR. (2022). Baru Nuts Market. Fact Market Research Company. Available at: https://www.factmr.com/report/1362/baru-nuts-market. (Accessed December 13, 2022).

Google Scholar

Fernandes, D. C., Freitas, J. B., Czeder, L. P., and Naves, M. M. (2010). Nutritional composition and protein value of the baru (Dipteryx alata Vog.) almond from the Brazilian savanna. J. Sci. Food Agric. 90, 1650–1655. doi: 10.1002/jsfa.3997

PubMed Abstract | CrossRef Full Text | Google Scholar

Fernandes, A. B. C., Marcolino, V. A., Silva, C., Barão, C. E., and Pimentel, T. C. (2021). Potentially synbiotic fermented beverages processed with water-soluble extract of Baru almond. Food Biosci. 42, 101200–101212. doi: 10.1016/j.fbio.2021.101200

CrossRef Full Text | Google Scholar

Ferraz, M. C., Parrilha, L. A. C., Moraes, M. S. D., Filho, J. A., Cogo, J. C., Santos, M. G. D., et al. (2012). The effect of Lupane triterpenoids (Dipteryx alata Vogel) in the in vitro neuromuscular blockade and myotoxicity of two snake venoms. Curr. Org. Chem. 16, 2717–2723. doi: 10.2174/138527212804004481

CrossRef Full Text | Google Scholar

Fetzer, D. L., Cruz, P. N., Hamerski, F., and Corazza, M. L. (2018). Extraction of baru (Dipteryx alata vogel) seed oil using compressed solvents technology. J. Supercrit. Fluids 137, 23–33. doi: 10.1016/j.supflu.2018.03.004

CrossRef Full Text | Google Scholar

Franca, P. A. P., Duque-Estrada, P., Fonsecae Sá, B. F., Van Der Goot, A. J., and Pierucci, A. P. T. (2022). Meat substitutes - past, present, and future of products available in Brazil: changes in the nutritional profile. Future Foods 5:100133. doi: 10.1016/j.fufo.2022.100133

CrossRef Full Text | Google Scholar

Freitas, J. B., and Naves, M. M. V. (2010). Chemical composition of nuts and edible seeds and their relation to nutrition and health. Rev. Nutr. 23, 269–279. doi: 10.1590/S1415-52732010000200010

CrossRef Full Text | Google Scholar

Gautério, G. V., Silvério, S. I. D. C., Egea, M. B., and Lemes, A. C. (2022). β-Glucan from brewer’s spent yeast as a techno-functional food ingredient. Front. Food Sci. Technol. 2:1074505. doi: 10.3389/frfst.2022.1074505

CrossRef Full Text | Google Scholar

GFI. (2022). Defining Alternative Proteins. Good Food Institute. Available at: https://gfi.org/. (Accessed December 13, 2022).

Google Scholar

Guimarães, R. C. A., Favaro, S., Souza, A., Soares, C., Nunes, Â., Oliveira, L., et al. (2012a). Thermal properties of defatted meal, concentrate, and protein isolate of baru nuts (Dipteryx alata Vog.). Food Sci. Technol. (Campinas) 32, 52–55. doi: 10.1590/S0101-20612012005000031

CrossRef Full Text | Google Scholar

Guimarães, R. C. A., Favaro, S. P., Viana, A. C. A., Braga Neto, J. A., Neves, V. A., and Honer, M. R. (2012b). Estudo das proteínas da farinha desengordurada e concentrado protéico de castanhas de baru (Dipteryx alata Vog). Food Sci. Technol. 32, 464–470. doi: 10.1590/S0101-20612012005000065

CrossRef Full Text | Google Scholar

Guimarães, R. M., Silva, T. E., Lemes, A. C., Boldrin, M. C. F., Silva, M. A. P., Silva, F. G., et al. (2018). Okara: a soybean by-product as an alternative to enrich vegetable paste. LWT 92, 593–599. doi: 10.1016/j.lwt.2018.02.058

CrossRef Full Text | Google Scholar

Hertzler, S. R., Lieblein-Boff, J. C., Weiler, M., and Allgeier, C. (2020). Plant proteins: assessing their nutritional quality and effects on health and physical function. Nutrients 12:3704. doi: 10.3390/nu12123704

CrossRef Full Text | Google Scholar

House, J. D., Hill, K., Neufeld, J., Franczyk, A., and Nosworthy, M. G. (2019). Determination of the protein quality of almonds (Prunus dulcis L.) as assessed by in vitro and in vivo methodologies. Food Sci. Nutr. 7, 2932–2938. doi: 10.1002/fsn3.1146

PubMed Abstract | CrossRef Full Text | Google Scholar

IBGE. (2020). Extração Vegetal e Silvicultura. Instituto Brasileiro da Geografia e Estatística. Available at: https://cidades.ibge.gov.br/brasil/pesquisa/16/12705.

Google Scholar

Langyan, S., Yadava, P., Khan, F. N., Dar, Z. A., Singh, R., and Kumar, A. (2022). Sustaining protein nutrition through plant-based foods. Front. Nutr. 8:772573. doi: 10.3389/fnut.2021.772573

PubMed Abstract | CrossRef Full Text | Google Scholar

Lemes, A. C., Braga, A. R. C., Gautério, G. V., Fernandes, K. F., and Egea, M. B. (2021). “Application of membrane Technology for Production of bioactive peptides” in Bioactive Peptides. eds. J. O. Onuh, M. Selvamuthukumaran, and Y. V. Pathak (Boca Raton: CRC Press), 27.

Google Scholar

Lemes, A. C., Coelho, M. A. Z., Gautério, G. V., Paula, L. C., Filho, J. G. D., and Egea, M. B. (2023). “Industrial wastes and by-products: a source of functional Foods, nutraceuticals, and biopolymers” in Biopolymers in Nutraceuticals and Functional Foods eds. S. Gopi, P. Balakrishnan, and M. Bračič (London, UK: The Royal Society of Chemistry), 329–360.

Google Scholar

Lemes, A. C., Egea, M. B., Oliveira Filho, J. G. D., Gautério, G. V., Ribeiro, B. D., and Coelho, M. A. Z. (2022). Biological approaches for extraction of bioactive compounds from agro-industrial by-products: a review. Front. Bioeng. Biotechnol. 9, 1–18. doi: 10.3389/fbioe.2021.802543

PubMed Abstract | CrossRef Full Text | Google Scholar

Lemes, A. C., Paula, L. C., Oliveira-Filho, J. G. O., Prado, D. M. F., Medronha, G. A., and Egea, M. B. (2020). Bioactive peptides with antihypertensive property obtained from agroindustrial byproducts–mini review. Austin J. Nutr. Metab. 7, 1–5.

Google Scholar

Lemes, A. C., Pavón, Y., Lazzaroni, S., Rozycki, S., Brandelli, A., and Kalil, S. J. (2016a). A new milk-clotting enzyme produced by bacillus sp. P45 applied in cream cheese development. LWT Food Sci. Technol. 66, 217–224. doi: 10.1016/j.lwt.2015.10.038

CrossRef Full Text | Google Scholar

Lemes, A. C., Sala, L., Ores, J. D. C., Braga, A. R. C., Egea, M. B., and Fernandes, K. F. (2016b). A review of the latest advances in encrypted bioactive peptides from protein-rich waste. Int. J. Mol. Sci. 17:950. doi: 10.3390/ijms17060950

CrossRef Full Text | Google Scholar

Lemos, M. R. B., Siqueira, E. M. D., Arruda, S. F., and Zambiazi, R. C. (2012). The effect of roasting on the phenolic compounds and antioxidant potential of baru nuts (Dipteryx alata Vog.). Food Res. Int. 48, 592–597. doi: 10.1016/j.foodres.2012.05.027

CrossRef Full Text | Google Scholar

Lemos, R. M. B., Zambiazi, R. C., Almeida, E. M. S., and Alencar, E. R. (2017). Tocopherols and fatty acid profile in Baru nuts (Dipteryx alata Vog.), raw and roasted: important sources in nature that can prevent diseases. Food Sci. Nutr. Technol. 1, 1–10.

Google Scholar

Lima, D. C., Alves, M. D. R., Noguera, N. H., and Nascimento, R. D. P. (2022). A review on Brazilian baru plant (Dipteryx alata Vogel): morphology, chemical composition, health effects, and technological potential. Future Foods 5:100146. doi: 10.1016/j.fufo.2022.100146

CrossRef Full Text | Google Scholar

Lima, J. C. R., De Freitas, J. B., Czeder, L. D. P., Fernandes, D. C., and Naves, M. M. V. (2010). Qualidade microbiológica, aceitabilidade e valor nutricional de barras de cereais formuladas com polpa e amêndoa de baru. Digit. Libr. J. 28, 331–343. doi: 10.5380/cep.v28i2.20450

CrossRef Full Text | Google Scholar

Lima, D. S., Egea, M. B., Cabassa, I. D. C. C., Almeida, A. B. D., Sousa, T. L. F., Lima, T. M. D., et al. (2021). Technological quality and sensory acceptability of nutritive bars produced with Brazil nut and baru almond coproducts. LWT 137:110467. doi: 10.1016/j.lwt.2020.110467

CrossRef Full Text | Google Scholar

Loveday, S. M. (2019). Food proteins: technological, nutritional, and sustainability attributes of traditional and emerging proteins. Annu. Rev. Food Sci. Technol. 10, 311–339. doi: 10.1146/annurev-food-032818-121128

PubMed Abstract | CrossRef Full Text | Google Scholar

Mahatmanto, T., Poth, A. G., Mylne, J. S., and Craik, D. J. (2014). A comparative study of extraction methods reveals preferred solvents for cystine knot peptide isolation from Momordica cochinchinensis seeds. Fitoterapia 95, 22–33. doi: 10.1016/j.fitote.2014.02.016

PubMed Abstract | CrossRef Full Text | Google Scholar

Mailer, R. J. (2016). “Oilseeds, overview” in Reference Module in Food Science. eds. G. Smithers and S. Hashmi (Amsterdam, Netherlands: Elsevier)

Google Scholar

Mendes, N. S. R., Gomes-Ruffi, C. R., Lage, M. E., Salamoni Becker, F., Machado de Melo, A. A., Da Silva, F. A., et al. (2013). Oxidative stability of cereal bars made with fruit peels and baru nuts packaged in different types of packaging. Cienc. Tecnol. Aliment. 33, 730–736. doi: 10.1590/S0101-20612013000400019

CrossRef Full Text | Google Scholar

Moreira, M. R., Caetano, K. A., Ming, C. C., Ribeiro, A. P. B., and Capitani, C. D. (2022). Handmade savory crackers made with baru cake and oil (Dipteryx alata Vog). Food Sci. Technol. 42:e18222. doi: 10.1590/fst.18222

CrossRef Full Text | Google Scholar

Munialo, C. D., Stewart, D., Campbell, L., and Euston, S. R. (2022). Extraction, characterisation and functional applications of sustainable alternative protein sources for future foods: a review. Future Foods 6:100152. doi: 10.1016/j.fufo.2022.100152

CrossRef Full Text | Google Scholar

Nezlek, J., and Forestell, C. (2020). Vegetarianism as a social identity. Curr. Opin. Food Sci. 33, 45–51. doi: 10.1016/j.cofs.2019.12.005

CrossRef Full Text | Google Scholar

Oliveira Filho, J. G., Rodrigues, J. M., Valadares, A. C. F., Almeida, A. B., Valencia-Mejia, E., Fernandes, K. F., et al. (2021). Bioactive properties of protein hydrolysate of cottonseed byproduct: antioxidant, antimicrobial, and angiotensin-converting enzyme (ACE) inhibitory activities. Waste Biomass Valorization 12, 1395–1404. doi: 10.1007/s12649-020-01066-6

CrossRef Full Text | Google Scholar

Oliveira-Alves, S. C., Pereira, R. S., Pereira, A. B., Ferreira, A., Mecha, E., Silva, A. B., et al. (2020). Identification of functional compounds in baru (Dipteryx alata Vog.) nuts: nutritional value, volatile and phenolic composition, antioxidant activity and antiproliferative effect. Food Res. Int. 131:109026. doi: 10.1016/j.foodres.2020.109026

PubMed Abstract | CrossRef Full Text | Google Scholar

Oliveira-Gonçalves, T., Filbido, G. S., Oliveira-Pinheiro, A. P., Pinto Piereti, P. D., Dalla Villa, R., and Oliveira, A. P. (2020). In vitro bioaccessibility of the cu, Fe, Mn and Zn in the baru almond and bocaiúva pulp and, macronutrients characterization. J. Food Compos. Anal. 86:103356. doi: 10.1016/j.jfca.2019.103356

CrossRef Full Text | Google Scholar

Paglarini, C. S., Queirós, M. S., Tuyama, S. S., Moreira, A. C. V., Chang, Y. K., and Steel, C. J. (2018). Characterization of baru nut (Dipteryx alata Vog) flour and its application in reduced-fat cupcakes. J. Food Sci. Technol. 55, 164–172. doi: 10.1007/s13197-017-2876-1

CrossRef Full Text | Google Scholar

Pineli, L. D. L. D. O., Carvalho, M. V., Aguiar, L. A., Oliveira, G. T., Celestino, S. M. C., Botelho, R. B. A., et al. (2015). Use of baru (Brazilian almond) waste from physical extraction of oil to produce flour and cookies. LWT Food Sci. Technol. 60, 50–55. doi: 10.1016/j.lwt.2014.09.035

CrossRef Full Text | Google Scholar

Pinho, L., Mesquita, D. S. R., Sarmento, A. F., and Flávio, E. F. (2015). Enriquecimento de sorvete com amêndoa de baru (Dipteryx alata Vogel) e aceitabilidade por consumidores. Rev. Unimontes Cient. 17, 39–49.

Google Scholar

Pintado, M. E., and Teixeira, J. A. (2015). Valorização de subprodutos da indústria alimentar: obtenção de ingredientes de valor acrescentado. Bol. Biotecnol. 1, 10–12. Available at: https://repositorium.sdum.uminho.pt/bitstream/1822/35328/1/document_21039_1.pdf

Google Scholar

Prado, D. M. F., Almeida, A. B., Oliveira-Filho, J. G., Alves, C. C. F., Egea, M. B., and Lemes, A. C. (2020). Extraction of bioactive proteins from seeds (corn, sorghum, and sunflower) and sunflower byproduct: enzymatic hydrolysis and antioxidant properties. Curr. Nutr. Food Sci. 16, 1–11. doi: 10.2174/1573401316999200731005803

CrossRef Full Text | Google Scholar

Ribeiro, T. G., Chávez-Fumagalli, M. A., Valadares, D. G., Franca, J. R., Lage, P. S., Duarte, M. C., et al. (2014). Antileishmanial activity and cytotoxicity of Brazilian plants. Exp. Parasitol. 143, 60–68. doi: 10.1016/j.exppara.2014.05.004

PubMed Abstract | CrossRef Full Text | Google Scholar

Rocha, L. G. (2012). Cultivo e Aproveitamento do Baru. FCTDMG-CETEC Serviço Brasileiro de Respostas Técnicas–SBRT. Available at: http://www.sbrt.ibict.br/dossie-tecnico/downloadsDT/Mjc3MzQ=

Google Scholar

Rocha, L. S., and Santiago, R. D. A. C. (2009). Implicações nutricionais e sensoriais da polpa e casca de baru (Dipterix alata Vog.) na elaboração de pães. Food Sci. Technol. 29, 820–825. doi: 10.1590/S0101-20612009000400019

CrossRef Full Text | Google Scholar

Rosenfeld, D. L. (2019). A comparison of dietarian identity profiles between vegetarians and vegans. Food Qual. Prefer. 72, 40–44. doi: 10.1016/j.foodqual.2018.09.008

CrossRef Full Text | Google Scholar

Sano, S. M. (2016). Critérios de seleção de baru para produção de amendoas e recomposição ambiental. Circ. Técnica EMBRAPA. 31, 1–7. Available at: https://ainfo.cnptia.embrapa.br/digital/bitstream/item/165509/1/Cirtec-31.pdf

Google Scholar

Santiago, G., Oliveira, I., Horst, M., Naves, M., and Silva, M. (2018). Peel and pulp of baru (Dipteryx alata Vog.) provide high fiber, phenolic content and antioxidant capacity. Food Sci. Technol. 38, 244–249. doi: 10.1590/1678-457x.36416

CrossRef Full Text | Google Scholar

Santos, G. G., Silva, M. R., Lacerda, D. B. C. L., Martins, D. M. D. O., and Almeida, R. D. A. (2012). Aceitabilidade e qualidade físico-química de paçocas elaboradas com amêndoa de baru. Pesq. Agropec. Trop. 42, 159–165. doi: 10.1590/S1983-40632012000200003

CrossRef Full Text | Google Scholar

Schincaglia, R. M., Cuppari, L., Neri, H. F. S., Cintra, D. E., Santana, M. R., and Mota, J. F. (2020). Effects of baru almond oil (Dipteryx alata Vog.) supplementation on body composition, inflammation, oxidative stress, lipid profile, and plasma fatty acids of hemodialysis patients: a randomized, double-blind, placebo-controlled clinical trial. Complement. Ther. Med. 52:102479. doi: 10.1016/j.ctim.2020.102479

PubMed Abstract | CrossRef Full Text | Google Scholar

Schincaglia, R. M., Pimentel, G. D., Peixoto, M., Cuppari, L., and Mota, J. F. (2021). The effect of baru (Dypterix alata Vog.) almond oil on markers of bowel habits in hemodialysis patients. Evid. Based Complement. Altern. Med. 2021:3187305. doi: 10.1155/2021/3187305

PubMed Abstract | CrossRef Full Text | Google Scholar

Sharma, V., Tsai, M.-L., Nargotra, P., Chen, C.-W., Kuo, C.-H., Sun, P.-P., et al. (2022). Agro-industrial food waste as a low-cost substrate for sustainable production of industrial enzymes: a critical review. Catalysts 12:1373. doi: 10.3390/catal12111373

CrossRef Full Text | Google Scholar

Silva, P. N., Dias, T., Borges, L. L., Alves-Santos, A. M., Horst, M. A., Silva, M. R., et al. (2020). Total phenolic compounds and antioxidant capacity of baru almond and by-products evaluated under optimizing extraction conditions. Rev. Cienc. Agrarias 15, 1–10. doi: 10.5039/agraria.v15i4a8530

CrossRef Full Text | Google Scholar

Silva, A. R. A., Silva, M. M. N., and Ribeiro, B. D. (2020). Health issues and technological aspects of plant-based alternative milk. Food Res. Int. 131:108972. doi: 10.1016/j.foodres.2019.108972

CrossRef Full Text | Google Scholar

Silva, A. R. A., Silva, M. M. N., and Ribeiro, B. D. (2022). “Plant-based milk products” in Future foods: global trends, opportunities, and sustainability challenges (Bhat: Academic Press), 233–249.

Google Scholar

Siqueira, A. P. S., Pacheco, M. T. B., and Naves, M. M. V. (2015). Nutritional quality and bioactive compounds of partially defatted baru almond flour. Cienc. Tecnol. Aliment. 35, 127–132. doi: 10.1590/1678-457X.6532

CrossRef Full Text | Google Scholar

Souza, R. G. M., Gomes, A. C., Castro, I. A., and Mota, J. F. (2018). A baru almond-enriched diet reduces abdominal adiposity and improves high-density lipoprotein concentrations: a randomized, placebo-controlled trial. Nutrition 55-56, 154–160. doi: 10.1016/j.nut.2018.06.001

PubMed Abstract | CrossRef Full Text | Google Scholar

Souza, R. G. M., Gomes, A. C., Navarro, A. M., Cunha, L. C. D., Silva, M. A. C., Barbosa-Junior, F. B., et al. (2019). Baru almonds increase the activity of glutathione peroxidase in overweight and obese women: a randomized, placebo-controlled trial. Nutrients 11:1750. doi: 10.3390/nu11081750

PubMed Abstract | CrossRef Full Text | Google Scholar

Souza, R. G., Gomes, A. C., Naves, M. M., and Mota, J. F. (2015). Nuts and legume seeds for cardiovascular risk reduction: scientific evidence and mechanisms of action. Nutr. Rev. 73, 335–347. doi: 10.1093/nutrit/nuu008

PubMed Abstract | CrossRef Full Text | Google Scholar

Takemoto, E., Okada, I. A., Garbelotti, M. L., Tavares, M., and Aued-Pimentel, S. (2001). Composição química da semente e do óleo de baru (Dipteryx alata Vog.) nativo do Município de Pirenópolis, Estado de Goiás. Rev. Inst. Adolfo Lutz 60, 113–117. doi: 10.53393/rial.2001.v60.35540

CrossRef Full Text | Google Scholar

Togashi, M., and Sgarbieri, V. C. (2010). Caracterização química parcial do fruto do baru (Dipteryx alata Vog.). Cienc. Tecnol. Aliment. 14, 85–95.

Google Scholar

Vallilo, M. I., Tavares, M. T. A., and Aued, S. (2010). Composição química da polpa e da semente do fruto do cumbaru (Dipteryx alata Vog.)–caracterização do óleo da semente. Rev. Inst. Florestal 2, 115–125.

Google Scholar

Van Dijk, M., Morley, T., Rau, M. L., and Saghai, Y. (2021). A meta-analysis of projected global food demand and population at risk of hunger for the period 2010–2050. Nature Food 2, 494–501. doi: 10.1038/s43016-021-00322-9

CrossRef Full Text | Google Scholar

Wu, G. (2016). Dietary protein intake and human health. Food Funct. 7, 1251–1265. doi: 10.1039/C5FO01530H

CrossRef Full Text | Google Scholar

Keywords: plant-based ingredient, baru pulp, baru defatted meal, baru by-products, meat analogs

Citation: Egea MB, de Oliveira Filho JG, Campos SB and Lemes AC (2023) The potential of baru (Dipteryx alata Vog.) and its fractions for the alternative protein market. Front. Sustain. Food Syst. 7:1148291. doi: 10.3389/fsufs.2023.1148291

Received: 19 January 2023; Accepted: 06 April 2023;
Published: 27 April 2023.

Edited by:

Luigi Ranieri, Università Lum Jean Monnet, Italy

Reviewed by:

Maria Margareth Veloso Naves, Universidade Federal de Goiás, Brazil
Jailane de Souza Aquino, Federal University of Paraíba, Brazil

Copyright © 2023 Egea, de Oliveira Filho, Campos and Lemes. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

*Correspondence: Mariana Buranelo Egea, mariana.egea@ifgoiano.edu.br

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