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Type: Artigo de periódico
Title: Antioxidant capacity of amaranth products: effects of thermal and enzymatic treatments
Author: Pazinatto, Caroline
Malta, Luciana Gomes
Pastore, Gláucia Maria
Maria Netto, Flavia
Abstract: The effect of different process -defatting, protein concentration, thermal treatment, hydrolysis with Alcalase and in vitro digestion- on the antioxidant capacity of amaranth seeds was studied. The antioxidant capacity of the products was determined in methanolic and aqueous extracts and varied from 1.00 to 21.22 and 4.97 to 369.18 µ mol TE/g sample for DPPH and ORAC assays, respectively. The combination of protein concentration and hydrolysis with Alcalase led to products with higher antioxidant activity. However, after in vitro digestion, protein concentrate and its hydrolysate showed similar antioxidant capacity. A high correlation was observed between the antioxidant capacity and the total phenolic content for methanolic extracts, with r² values ranging from 0.6133 to 0.9352.
Subject: gastrointestinal digestion
bioactive peptides
antioxidant compounds
Editor: Sociedade Brasileira de Ciência e Tecnologia de Alimentos
Rights: aberto
Identifier DOI: 10.1590/S0101-20612013005000076
Date Issue: 1-Sep-2013
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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