Characteristic Analysis of Peptide Fraction Extracted from Dendrobium aphyllum After In Vitro Gastrointestinal Digestion and Fermentation by Human Fecal Microbiota

To characterize the digestive properties of an antioxidative peptide fraction (DA-P peptide) extracted from Dendrobium aphyllum and its effects following fermentation, DA-P peptide was used as a substrate for artificially stimulated in vitro gastrointestinal digestion and fermentation by human fecal microbiota. After in vitro digestion, the reducing power and DPPH- and ABTS- free radical-scavenging capabilities of DA-P peptide were significantly...