Effect of non-digestible oligosaccharides on gut microecosystem in rats

Effect of commercial or new-developed preparations of non-digestible oligosaccharides: fructo-oligosaccharides, lactulose, corn dextrins and corn resistant starch, on microecology of Wistar rats was investigated. A control group was fed a casein diet with 10% cellulose. The experimental groups were...

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Bibliographic Details
Published in:Food research international 2002, Vol.35 (2), p.139-144
Main Authors: Bielecka, Maria, Biedrzycka, Elżbieta, Majkowska, Anna, Juśkiewicz, Jerzy, Wróblewska, Monika
Format: Article
Language:English
Subjects:
Biological and medical sciences
Enzymatic activity
Feeding. Feeding behavior
Food industries
Fundamental and applied biological sciences. Psychology
Gut microecosystem
Microflora
Non-digestible oligosaccharides
Physiological parameters
Rats
Research and development. New food products, dietetic foods and beverages
Vertebrates: anatomy and physiology, studies on body, several organs or systems
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Summary:Effect of commercial or new-developed preparations of non-digestible oligosaccharides: fructo-oligosaccharides, lactulose, corn dextrins and corn resistant starch, on microecology of Wistar rats was investigated. A control group was fed a casein diet with 10% cellulose. The experimental groups were administered diets in which cellulose was replaced by the examined preparations. After 4-week feeding experiments, a high increase in live bifidobacteria number by 1.2 and 1.4 log cfu/g of faeces was found in groups fed resistant starch and lactulose. An increase in coliform number by 0.6–0.8 log cfu/g was found in all the groups. No or only negligible changes in numbers of the total mesophilic aerobic and facultatively anaerobic bacteria count, and the spores of anaerobic and aerobic bacteria, were observed. Fructo-oligosaccharides and lactulose lowered pH and gave the best trophic effect in caecum (significantly increased weights of: caecum with contents, cecal walls and cecal contents as well as dry weight of contents), whereas resistant starch increased markers of unhealthy cecal changes (N-NH 3 content and β-glucuronidase activity). The activity of bacterial saccharolytic enzymes changed in a substrate-specific manner in relation to the examined non-digestible oligosaccharide preparations.
ISSN:0963-9969
1873-7145
DOI:10.1016/S0963-9969(01)00175-2