AUTHOR=Garcia-Valle Daniel E. , Bello-Perez Luis A. , Flores-Silva Pamela C. , Agama-Acevedo Edith , Tovar Juscelino TITLE=Extruded Unripe Plantain Flour as an Indigestible Carbohydrate-Rich Ingredient JOURNAL=Frontiers in Nutrition VOLUME=6 YEAR=2019 URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2019.00002 DOI=10.3389/fnut.2019.00002 ISSN=2296-861X ABSTRACT=
There is a growing interest in the development of functional ingredients, including those with high indigestible carbohydrate content. Unripe plantain flour (UPF) is a source of indigestible carbohydrates, type II resistant starch (RS) in particular. A major drawback of UPF, however, is that its RS content decreases sharply after wet heat treatment. Here, we explore the possibility of preparing an extruded UPF-based functional ingredient that retains limited starch digestibility features and high dietary fiber content. Both an unripe plantain pulp flour (UPFP) and a whole (pulp and peel) unripe plantain flour (UPFW) were prepared, extruded under identical conditions and evaluated for their gelatinization degree, total starch (TS), resistant starch (RS), and total dietary fiber (TDF) content; functional properties, such as pasting profile, water retention capacity, and solubility, and oil absorption index were also analyzed. The extruded functional ingredient was added to a yogurt and the rheological characteristics and