Characterization and Bile Acid Binding Capacity of Dietary Fiber Obtained from Three Different Amaranth Products

Amaranth is a dicotyledonous plant, now considered a health-promoting food. It has been rediscovered by the worldwide food industry, which is increasingly becoming aware of the many uses and benefits provided by amaranth in various food preparations. Amaranth dietary fibers, soluble and insoluble fr...

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Bibliographic Details
Published in:Plant foods for human nutrition (Dordrecht) 2024-03, Vol.79 (1), p.38-47
Main Authors: Sabbione, Ana Clara, Añón, María Cristina, Scilingo, Adriana
Format: Article
Language:English
Subjects:
Acids
Adsorptivity
Amaranth
Bile
Bile acids
Binding
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Cytotoxicity
Dietary fiber
Ecology
Fibers
Flour
Food industry
Food Science
Health promotion
Hydrophobicity
Metabolites
Nutrition
Plant Physiology
Proteins
Sequestering
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Summary:Amaranth is a dicotyledonous plant, now considered a health-promoting food. It has been rediscovered by the worldwide food industry, which is increasingly becoming aware of the many uses and benefits provided by amaranth in various food preparations. Amaranth dietary fibers, soluble and insoluble fractions, obtained from flour, protein isolate, and beverage were physicochemically characterized and their potential bile acid binding capacity was evaluated. Primary bile acids binding to fiber might contribute to a hypocholesterolemic effect, while the binding of secondary bile acids could minimize the cytotoxic effect that these metabolites exert on the colon. Amaranth fiber fractions were capable of sequestering cholate, taurocholate, deoxycholate, and bovine bile, with a percentage depending not only on the origin and the type of amaranth fiber evaluated but also on the bile acid studied. Flour fiber and the protein isolate insoluble fractions were the most efficient for binding bile and bile acids with uptake values between 29 and 100% relative to cholestyramine. Moreover, deoxycholate, a hydrophobic secondary bile acid, was the most captured by all the fractions, reaching 100% uptake with total and insoluble fibers of the three amaranth products. These results would suggest that the main effect through which amaranth fiber binds bile acids corresponds to an adsorptive effect mediated by hydrophobic interactions.
ISSN:0921-9668
1573-9104
DOI:10.1007/s11130-023-01116-z