Journal
CARBOHYDRATE POLYMERS
Volume 251, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.117041
Keywords
Oudemansiella radicata; Polysaccharides; Simulated digestion; Fermentation; Short-chain fatty acids; Gut microbiota
Categories
Funding
- Sichuan Science and Technology Program [2020YJ0156]
- Technology Innovation R&D Project of Chengdu City [2019-YFYF-00045-SN]
- National Natural Science Foundation of China [81903284]
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Oudemansiella radicata is a nutrient-rich mushroom farmed in China, containing polysaccharides with strong biological properties. After simulated digestion and fermentation, it was found that ORP is indigestible but can produce beneficial short-chain fatty acids and modulate gut microbiota composition to promote gastrointestinal health.
Oudemansiella radicata is a commercialized and nutrient-rich mushroom farmed in China. Polysaccharides (ORP) found in this mushroom possess strong biological properties. In this study, the digestibility and fermentation of ORP and its effects on gut microbiota composition were examined in a simulated digestion and fermentation system in vitro. Results showed that the molecular weight of ORP decreased after simulated digestion. However, no free monosaccharide was detected, indicating that ORP was indigestible. Besides, the overall structure of ORP was not damaged after digestion. When ORP was degraded and utilized by gut microbiota during the fermentation process, several short-chain fatty acids were formed, acetic acid, pmpionic acid and n-butyric acid were the main products. Notably, ORP could significantly modulate the composition, via increasing the relative abundances of Bacteroides and Parabacteroides. These results suggest that ORP can be used as a functional food to improve health and prevent diseases by promoting gut health.
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