The regulatory effects of whey retentate from bifidobacteria fermented milk on the microbiota of the Simulator of the Human Intestinal Microbial Ecosystem (SHIME).

Abstract:

AIMS:To investigate the effects of whey retentate from Bifidobacteria fermented milk. METHODS AND RESULTS:The simulator of the human intestinal microbial ecosystem (SHIME) was used. The composition of the microbiota and its metabolic activities were analysed. Changes in the microbial composition became apparent within 15 days of the treatment in the vessels representing the ileum and the large intestine. The whey retentate favoured the growth of endogenous bifidobacteria and induced a decrease in Bacteroides fragilis and in sulphite-reducing clostridia, especially Clostridium perfringens. After the administration was stopped, these populations tended to revert to their original levels, except for the streptococci and the staphylococci populations. The treatment also led to an increase in acetic acid, CH4 and CO2 production, suggesting overgrowth of some anaerobic bacteria. Ammonium, generally considered as undesirable, declined. CONCLUSIONS:The whey retentate clearly altered the microbial community in the SHIME. SIGNIFICANCE AND IMPACT OF THE STUDY:Whey retentate appears to exert a beneficial effect on the in vitro gastrointestinal system; these findings warrant confirmation by in vivo studies.

journal_name

J Appl Microbiol

authors

Meddah AT,Yazourh A,Desmet I,Risbourg B,Verstraete W,Romond MB

doi

10.1046/j.1365-2672.2001.01482.x

subject

Has Abstract

pub_date

2001-12-01 00:00:00

pages

1110-7

issue

6

eissn

1364-5072

issn

1365-2672

pii

1482

journal_volume

91

pub_type

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