期刊
MOLECULES
卷 25, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/molecules25010184
关键词
gastrointestinal digestion; in vitro colonic fermentation; proanthocyanidins absorption; bioavailability
资金
- National Key Research and Development Program [2016YFD0400805]
- Zhejiang Province Key Research and Development Program [2018C02G2011105]
Chinese bayberry leaf proanthocyanidins (BLPs) are Epigallocatechin gallate (EGCG) oligomers or polymers, which have a lot of health-promoting activity. The activity is closely related to their behavior during in vitro digestion, which remains unknown and hinders further investigations. To clarify the changes of BLPs during gastrointestinal digestion, further research is required. For in vitro digestion, including gastric-intestinal digestion, colon fermentation was applied. Caco-2 monolayer transportation was also applied to investigate the behavior of different BLPs with different degrees of polymerization. The trimers and the tetramers were significantly decreased during in vitro gastric-intestinal digestion resulting in a significant increase in the content of dimers. The dimers and trimers were the main compounds utilized by gut microbiota and they were assumed not to degrade through cleavage of the inflavan bond. The monomers and dimers were able to transport through the Caco-2 monolayer at a rate of 10.45% and 6.4%, respectively.
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