Impact of Modified Dietary Fiber from Tomato Peel on Intestinal Bacteria in STZ-induced Diabetic Rats

doi:10.7506/spkx1002-6630-201315054

Abstract

Abstract:

Objective: To explore the effect of modified dietary fiber from tomato peel on the intestinal flora in STZinduced
diabetic rats. Methods: Microbial total DNA from the intestinal flora and feces of STZ-induced diabetic rats was
extracted. The extracted total DNA was subjected to DGGE electrophoresis to analyze the compositions and variation of the
intestinal flora in diabetic rats. Results: A total of 8 bacterial strains from Bifidobacterium, Eubacterium, Clostridium and
Lactobacillus were detected in the gut and feces of rats. Three bacteria such as Bifidobacterium bifidum, Bifidobacterium
breve, and Eubacterium rectale were colonized in the gut mucosa, and the number of these bacteria remained relatively
stable. Lactobacillus murinus was detected in all fecal samples of rats as the dominant bacterium. Conclusion: DGGE is
suitable for batch analysis of gut and fecal flora. Soluble dietary fiber (SDF) from tomato peel is an important carbon source
for Faecalibacterium prausnitzii. Ultrafine ground dietary fiber from tomato peel is an important carbon source for lactateutilizing
bacteria such as Anaerostipes caccae and Eubacterium hallii.

Key words: modified tomato pomace, dietary fiber, intestinal bacteria, DGGE

CLC Number:

TS252.54

CUI Jun1，ZHENG Gang 1，HU Juan1，ZHAO Guo-hua1,2,*. Impact of Modified Dietary Fiber from Tomato Peel on Intestinal Bacteria in STZ-induced Diabetic Rats[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201315054.

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Impact of Modified Dietary Fiber from Tomato Peel on Intestinal Bacteria in STZ-induced Diabetic Rats

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