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http://dx.doi.org/10.3839/jabc.2008.042

Screening of Hemicellulose Oligosaccharides and Preparation of the Recipe for Modified MRS Medium by the Replacement of Carbon Source  

Lee, Hee-Jung (Department of Food and Bioengineering, Kyungwon University)
Park, Gwi-Gun (Department of Food and Bioengineering, Kyungwon University)
Publication Information
Journal of Applied Biological Chemistry / v.51, no.6, 2008 , pp. 272-276 More about this Journal
Abstract
Purification and some properties of Xylogone sphaerospora ${\beta}$-mannanase were reprevious previous paper. Locust bean gum galactomannan was hydrolyzed by the purified ${\beta}$-mannanase, and then the hydrolysates was separated by activated carbon column chromatography. The main hydrolysates were composed of D.P. (Degree of Polymerization) 4 and 6 galactosyl mannooligosaccharides. For elucidate the structure of D.P 4 and 6 galactosyl mannooligosaccharides, sequential enzymatic action was performed. D.P 4 and 6 were identified as ${Gal^2}{Man_3}\;(6^2-mono-O-{\alpha}-D-galactopyranosyl-4-O-{\beta}-D-mannotriose)$ and ${Gal^2}{Man_5}\;(6^2-mono-O-{\alpha}-D-galacto- pyranosyl-4-O-{\beta}-D-mannopentaose)$. To investigate the effects of locust bean gum galactosyl mannooligosaccharides on in vitro growth of Bifidobacterium longum, B. bifidum, B. infantis, B. adolescentis, B. animalis, B. auglutum and B. breve. Bifidobacterium spp. were cultivated individually on the modified-MRS medium containing carbon source such as D.P. 4 and D.P. 6 galactosyl mannooligosaccharides, respectively. B. longum and B. bifidum grew up to-fold and 6.6-fold more effectively by the treatment of D.P. 6 galactosyl mannooligosaccharides, compared to those of standard MRS medium. Especially, D.P. 6 was more effective than D.P. 4 galactosyl mannooligosaccharide on the growth of Bifidobacterium spp.
Keywords
Bifidobacterium spp.; galactosyl mannooligosaccharides; gum galactomannan; ${\beta}$-mannanase;
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Times Cited By KSCI : 5  (Citation Analysis)
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