期刊
FOOD RESEARCH INTERNATIONAL
卷 141, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.foodres.2020.109888
关键词
Snow chrysanthemum; Polysaccharide; In vitro digestion; In vitro fermentation; Gut microbiota; Structural characteristic
资金
- China Central Public-interest Scientific Institution Basal Research Fund [Y2020XK05]
- National Natural Science Foundation of China [31901690]
- Scientific Research Foundation of Sichuan Agricultural University [03120321]
Snow chrysanthemum polysaccharides (JHP) can be partially degraded during gastrointestinal digestion and further utilized by gut microbiota in fecal fermentation, leading to an increase in beneficial bacteria. This suggests that JHP has the potential to serve as a prebiotic, influencing the composition and abundance of gut microbiota.
The in vitro simulated saliva-gastrointestinal digestion and human fecal fermentation of snow chrysanthemum polysaccharides (JHP) were investigated. Results showed that reducing sugar contents of JHP increased during the gastrointestinal digestion, and glucose released with the decrease of its molecular weight, suggesting that JHP could be partially degraded under the gastrointestinal digestion. Furthermore, after in vitro fecal fermentation, the molecular weight and molar ratio of constituent monosaccharides (galactose and galacturonic acid) of the indigestible JHP (JHP-I) significantly decreased, and both monosaccharides and oligosaccharides released, suggesting that JHP-I could be further degraded and consumed by gut microbiota. Some beneficial bacteria, such as genera Bifidobacterium, Lactobacillus, Megamonas, and Megasphaera, significantly increased, suggesting that JHP-I could change the composition and abundance of gut microbiota. These results suggest that JHP is a potential source of prebiotics, and can be helpful for better understanding of the potential digestion and fermentation mechanism of JHP.
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