期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 69, 期 1, 页码 170-182出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.0c06041
关键词
human milk oligosaccharides; galacto-oligosaccharides; fucose; bifidobacteria; lactobacilli; potentially pathogenic bacteria
资金
- Inbiose NV (Ghent, BE)
Research shows that only certain bifidobacteria and Bacteroides species can utilize human milk oligosaccharides (HMOs) as their sole carbon source, promoting beneficial bacteria growth, while other bacteria prefer utilizing other carbon sources such as prebiotic galacto-oligosaccharides, lactose, and glucose.
Prebiotic human milk oligosaccharides (HMOs) are found in human milk, which are not digested by infants but are metabolized by beneficial gut bacteria. We determined the ability of 57 bacterial strains within the Family Lactobacillaceae and genera Bifidobacterium and Bacteroides and potentially pathogenic bacteria to ferment the HMOs 2'-fucosyllactose, 3-fucosyllactose, and difucosyllactose. In addition, prebiotic galacto-oligosaccharides (GOS), lactose, fucose, and glucose were evaluated as carbon sources for these bacterial strains. Bacterial growth was monitored using the automatic Bioscreen C system. Only certain bifidobacteria, such as Bifidobacterium longum subsp. infantis and Bifidobacterium bifidum, as well as Bacteroides fragilis, Bacteroides vulgatus, and Bacteroides thetaiotaomicron utilized the studied HMOs as their sole carbon source, whereas almost all studied bacterial strains were able to utilize GOS, lactose, and glucose. The selectivity in utilization of HMOs by only certain bacteria can be advantageous by promoting beneficial microbes but not supporting the harmful pathogens in contrast to other less selective prebiotics.
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