کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1220520 967788 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of gastrointestinal transit in rats fed dietary fibres differing in their susceptibility to large intestine fermentation
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Evaluation of gastrointestinal transit in rats fed dietary fibres differing in their susceptibility to large intestine fermentation
چکیده انگلیسی

The rate and extent of in situ digesta transit after ingestion of diets containing dietary fibres differing in their susceptibility to large intestine fermentation were investigated. One hundred and twenty rats were fed diets containing 7.5% cellulose, inulin, potato fibre or maize starch for 3 days, then the same diets with titanium dioxide (TiO2) for 3 days, followed by diets without TiO2 for 2 days. In all diets, TiO2 ratios rapidly increased within 24 h and reached a maximum level in duodenum, caecum and colon within 2–3 days. Inulin, potato fibre and maize starch-fed rats showed higher levels of caecal short-chain fatty acids, lower faecal polysaccharide concentrations, and reduced faecal output than the rats fed cellulose. Inulin was highly susceptible to caecal microbial fermentation compared to the other dietary fibres. Transit of these dietary fibres through the GI tract was rapid, and the rate of digesta transit was not affected by dietary fibre fermentability in the large intestine.


► Digesta replacement was rapid and almost complete in a 24 h period.
► Inulin was highly susceptible to caecal microbial fermentation.
► Dietary fibre fermentability, as measured by caecal short-chain fatty acid concentration, had no impact on digesta transit in the gastrointestinal tract.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Functional Foods - Volume 4, Issue 1, January 2012, Pages 107–115
نویسندگان
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