TY - JOUR A2 - Callaway, Todd R. AU - Kong, X. F. AU - Zhang, Y. Z. AU - Wu, X. AU - Yin, Y. L. AU - Tan, Z. L. AU - Feng, Y. AU - Yan, F. Y. AU - Bo, M. J. AU - Huang, R. L. AU - Li, T. J. PY - 2009 DA - 2009/08/25 TI - Fermentation Characterization of Chinese Yam Polysaccharide and Its Effects on the Gut Microbiota of Rats SP - 598152 VL - 2009 AB - Rat was used to characterize Chinese Yam polysaccharides (CYPs). In Exp. 1, maximum volume and rate of gas production in CYP 3-supplemented group were higher than other CYP-supplemented groups and control group, while pH values and NH3 contents in CYP 2-, CYP 3-, and CYP 4-supplemented groups were lower than control group. Contents of acetate, propionate and butyrate increased by supplementing CYP 3 or CYP 4 compared to other groups, except for glucose-supplemented group. Contents of isobutyrate for CYPs groups decreased compared to control group. CYP 3 enhanced beneficial gut microbiota, but suppressed bacterial pathogens. In Exp. 2, contents of acetate and butyrate in cecal digesta of rats fed 0.25 or 0.5 g/kg CYP 3 were higher than other groups on day 7. pH values in 0.25 and 0.5 g/kg groups were lower than 1.0 g/kg group. Contents of acetate in 0.25 and 0.5 g/kg groups were greater than other 2 groups on day 21. Gut microflora in CYP 3-supplemented rats had greater diversity than non-supplemented rats. CYP 3 enriched beneficial gut microbiota, but suppressed bacterial pathogens in rat cecum. These findings suggested that CYP 3 is a good source of carbon and energy, and may improve bacterial community diversity and modulate short-chain fatty acid production in hindgut of rats. SN - 1687-918X UR - https://doi.org/10.1155/2009/598152 DO - 10.1155/2009/598152 JF - International Journal of Microbiology PB - Hindawi Publishing Corporation KW - ER -