Abstract: As a new kind of functional food, the effects of low glutelin rice on intestinal flora after gastrointestinal digestion remained to be studied. Starch, low glutelin rice and ordinary rice were used as carbon sources. The fecal microorganisms of healthy people were fermented in a bionic large intestinal reactor, to explore the effects of low glutelin rice on the structure and metabolism of human intestinal flora. The results showed that in the beneficial metabolites of low glutelin rice, the concentration of short chain fatty acids(SCFAs)reached 104.85 mmol/L, which was 44.94% and 25.33% higher than starch and ordinary rice. The concentration of lactic acid reached 18.19 mmol/L, which was 60.55% and 25.28% higher than starch and ordinary rice. In the harmful metabolites of low glutelin rice, the concentration of branched chain fatty acids (BCFAs)was 0.29 mmol/L, which was 79.31% lower than ordinary rice. The concentration of ammonia was 2.60 mmol/L, which was 16.15% lower than ordinary rice. Plate counting showed that the beneficial intestinal bacteria Bacteroides and Bifidobacterium increased significantly (P<0.05). 16S rDNA sequencing showed that the abundance ofBacteroidetes and Firmicutesincreased while that of Proteobacteria andFusobacteriadecreased. Based on the results, low glutelin rice has a positive effect on the structure and metabolism of intestinal flora in healthy people.
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2021, Vol. 47 
