Action of Galactanase from Penicillium citrinum on o-Nitrophenyl-β-D-galactopyranoside(Biological Chemistry)
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概要
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The action of endo-1, 4-β-D-galactanase from penicillium citrinum on o-nitrophenyl-β-D-galactopyranoside (ONPG) was investigated. In reaction mixtures with various concentrations of ONPG, liberation of o-nitrophenol (ONP) was observed after a lag phase and then oligosaccharides withe and without ONP-group were found to accumulate. The products were separated by activated carbon column chromatography and paper chromatography, and found to be series of β-1, 4-linked galactooligosaccharides and their ONP-substituted derivatives. Liberation of ONP from the ONP-substituted oligosaccharides by the enzyme occured without a lag phase. Furthermore, the lag phase of ONP liberation from ONPG was eliminated by the addition of β-1, 4-galactotriose and -tetraose to the reaction mixture. The formation of ONP-substituted oligosaccharides before the liberation of ONP is assumed to be the cause of the observed lag.
- 社団法人日本農芸化学会の論文
- 1986-12-23
著者
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NAKANO HIROFUMI
Osaka Municipal Technical Research Institute, and Yashiro Co, Ltd.,
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Takenishi Shigeyuki
Osaka Municipal Technical Research lnstitute
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Watanabe Y
Sonoda Gakuen Women's College
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WATANABE Yasuto
Osaka Municipal Technical Research Institute
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Nakano Hirofumi
Osaka Municipal Technical Research Institute
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Takenishi S
Osaka Municipal Technical Res. Inst. Osaka Jpn
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Takenishi Shigeyuki
Osaka Municipal Technical Research Institute
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