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. 2021 Jul 10;13(7):2360. doi: 10.3390/nu13072360

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Evaluation of total polyphenols content in the extract at the end of gastric and duodenal digestion. Values are given as the amount of polyphenols in the undigested extract (baseline) and in the soluble extract released during in vitro gastric and gastric + duodenal digestion. Values represent averages (±SD) of triplicate measurements. RSD was always <10%. Statistically significant differences were observed (Friedman’s test followed by post hoc comparison with one-tailed Dunnett’s test) and are characterized by the * symbol. Statistically significant differences were observed between the end of gastric and duodenal digestions and undigested extract (p < 0.001) (***).