Influence of Lactose on Faecal Microflora in Lactose Maldigestors

The effects of lactose intake on the human faecal microflora and on the faecal organic acids were investigated in 24 Japanese male volunteers who took 15 g of the test sugar daily for 6 d. Twenty-two of the 24 subjects (92 per cent) were classified as lactose maldigestors by the hydrogen breath test...

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Published inMicrobial ecology in health and disease Vol. 6; no. 2; pp. 73 - 76
Main Authors Ito, M., Kimura, M.
Format Journal Article
LanguageEnglish
Published Oslo Informa UK Ltd 1993
Taylor & Francis
Subjects
Animal, plant and microbial ecology
Biological and medical sciences
Clostridium perfringens
Faecal microflora
Fundamental and applied biological sciences. Psychology
Intestinal microflora
Lactose
Lactose maldigestion
Microbial ecology
Normal microflora of man and animals. Rumen
Human
Microflora
Lactose
Gut
Feeding
Digestibility
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Summary:The effects of lactose intake on the human faecal microflora and on the faecal organic acids were investigated in 24 Japanese male volunteers who took 15 g of the test sugar daily for 6 d. Twenty-two of the 24 subjects (92 per cent) were classified as lactose maldigestors by the hydrogen breath test. The numbers of total faecal bacteria, and specifically of bacteroides and Clostridium perfringens decreased while the numbers of lactobacilli, enterococci, Candida spp. and staphylococci increased after lactose consumption. The ingestion of lactose did not markedly alter faecal short chain fatty acids but increased the concentration of formic acid and valeric acid. These results suggest that in subjects with verified lactose maldigestion, part of the lactose passes into the colon, inducing changes in the colonic microflora composition.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0891-060X
1651-2235
1651-2235
DOI:10.3109/08910609309141564