期刊
CARBOHYDRATE POLYMERS
卷 136, 期 -, 页码 1074-1084出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.09.106
关键词
Potato; Rhamnogalacturonan I; Prebiotic; Short chain fatty acid; Digestibility
资金
- FQRNT Fonds de recherche du Quebec - Nature et technologies
- Canada Foundation for Innovation (CFI)
Galactose-rich oligosaccharides/oligomers (oligo-RG I) were produced by the enzymatic treatment of potato galactan-rich rhamnogalacturonan I (RG I) with endo-beta-1,4-galactanase and Depol 670L multienzymatic preparation. The digestibility study revealed that 81.6 and 79.3% of RG land its corresponding oligomers remained unhydrolyzed, respectively. The prebiotic properties of RG I and its hydrolysates were investigated using a continuous culture system inoculated with immobilized fecal microbiota. Both RG I and oligo-RG I have stimulated the growth of Bifidobacterium spp. and Lactobacillus spp., with oligo-RG I hydrolysates being more selectively fermented by these beneficial bacteria. Furthermore, none of RG I nor its hydrolysates increased the populations of Bacteroidetes and Clostridium leptum. Total amounts of short chain fatty acids, generated upon the fermentation of oligo-RG I, were higher than those obtained with its parent RG I and the positive control (fructooligosaccharides). The overall study contributes to the understandings of the prebiotic properties of potato RG I and its corresponding oligosaccharides/oligomers. (c) 2015 Elsevier Ltd. All rights reserved.
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