AUTHOR=Wang Lei , Fan Rui , Yan Yanhua , Yang Shuo , Wang Xuesong , Zheng Baiqin 

TITLE=Characterization of the structural, physicochemical, and functional properties of soluble dietary fibers obtained from the peanut shell using different extraction methods

JOURNAL=Frontiers in Nutrition

VOLUME=9

YEAR=2023

URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2022.1103673

DOI=10.3389/fnut.2022.1103673

ISSN=2296-861X

ABSTRACT=<sec><title>Objective</title><p>To propose a possible solution for a peanut by-product, peanut shell (PS), this study evaluated the effects of different methods, including enzymatic extraction (E-SDF), microwave extraction (M-SDF), and pulsed electric field extraction (PEF-SDF), on the characterization of soluble dietary fibers (SDFs) from PS.</p></sec><sec><title>Methods</title><p>We determined the physicochemical properties, including water- and oil-holding capacities (WHC and OHC), emulsifying properties, rheological properties, functional properties, including pancreatic lipase activity inhibition (PRAI), glucose and cholesterol adsorption capacities (GAC and CAC), and the structural properties of SDFs.</p></sec><sec><title>Results</title><p>The results showed that PEF-SDF possessed the highest WHC, OHC, and emulsifying properties. M-SDF and PEF-SDF appeared to have more complex and porous structures, and they showed small molecular weights. Notably, PEF-SDF showed the strongest capacities in CAC, GAC, and PRAI.</p></sec><sec><title>Conclusions</title><p>The results indicate that PEF-SDF is a potential SDF preparation method for a promising dietary fiber (DF) source, PS.</p></sec>