期刊
JOURNAL OF MEDICINAL FOOD
卷 16, 期 9, 页码 862-867出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/jmf.2012.0292
关键词
butyrate; corn; grains; gut microbiota; maize; oats; propionate; rice; rye; short-chain fatty acids; wheat
资金
- Agricultural Research Division of the University of Nebraska-Lincoln
Gut bacteria may influence obesity through the metabolites produced by dietary fiber fermentation (mainly, short-chain fatty acids [SCFA]). Five cereal grain samples (wheat, rye, maize [corn], rice, and oats) were subjected to in vitro digestion and fermentation using fecal samples from 10 obese and nine normal weight people. No significant differences in total SCFA production between the normal weight and obese groups were observed [279 (12) vs. 280 (12), mean (standard error), respectively; P=.935]. However, the obese microbiota resulted in elevated propionate production compared with that of normal weight [24.8(2.2) vs. 17.8(1.9), respectively; P=.008]. Rye appeared to be particularly beneficial among grain samples due to the lowest propionate production and highest butyrate production during fermentation. These data suggest that the dietary fibers from cereal grains affect bacterial metabolism differently in obese and normal weight classes and that certain grains may be particularly beneficial for promoting gut health in obese states.
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