Abstract:
:This work compares the phenolic contents and the total antioxidant capacity of the 36 most popular Brazilian foods submitted to aqueous extraction or in vitro digestion. The purpose was to evaluate the extent by which digestion differs from the simple aqueous extraction procedures of several food matrices. After in vitro digestion, cereals, legumes, vegetables, tuberous vegetables, chocolates and fruits showed higher phenolic contents and higher antioxidant activities than those obtained by aqueous extraction. Contrarily, the digestion caused a reduction in the phenolic contents and antioxidant activities of beverages (red wine, coffee and yerba mate). Our results suggest that the phenolics of food groups with solid and complex matrix are protected against enzymatic action and alteration in pH during the digestion, what does not occur in liquid food matrices such as the beverages. This fact would overestimate the antioxidant activities of beverages submitted solely to aqueous extraction.
journal_name
Int J Food Sci Nutrjournal_title
International journal of food sciences and nutritionauthors
Koehnlein EA,Koehnlein ÉM,Corrêa RC,Nishida VS,Correa VG,Bracht A,Peralta RMdoi
10.1080/09637486.2016.1186156subject
Has Abstractpub_date
2016-09-01 00:00:00pages
614-23issue
6eissn
0963-7486issn
1465-3478journal_volume
67pub_type
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