Formation of Ethyl α-D-Glucoside in Saké Brewing
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- OKA Satoru
- Department of Fermentation Technology, Faculty of Engineering, Hiroshima University
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- IWANO Kimio
- Research Institute of Brewing, Tax Administration Agency
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- NUNOKAWA Yataro
- Research Institute of Brewing, Tax Administration Agency
Bibliographic Information
- Other Title
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- 清酒醸造過程におけるエチルα‐D‐グルコシドの生成
- セイシュ ジョウゾウ カテイ ニ オケル エチル アルファ D グルコシド ノ
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Abstract
A remarkable formation of ethyl α-D-glucoside (α-EG) was observed in the regular process of saké brewing, while its formation was slight in a modified process, in which Koji as the enzyme source was replaced with a mixture of mold enzyme preparations, Takadiastase (Aspergillus oryzae) and glucoamylase (Rhizopus delemar). An enzyme preparation was fractionated from Koji extract and partially purified. The enzyme fraction catalyzed the formation of α-EG from ethanol and α-1, 4-glucans having various degrees of polymerization as sugar substrate by a transglucosidation reaction in parallel with hydrolysis of the glucans to glucose. Thus, it was concluded that α-EG in saké was synthesized by the action of the Koji-enzyme from those glucans and ethanol in the system of usual saké brewing. Although Takadiastase also showed some activity of α-EG forming enzyme, the activity in the modified process was estimated to be very lower than in the regular one, because only a small quantity of the preparation was introduced.
Journal
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- Nippon Nōgeikagaku Kaishi
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Nippon Nōgeikagaku Kaishi 50 (10), 463-468, 1976
Japan Society for Bioscience, Biotechnology, and Agrochemistry
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Details 詳細情報について
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- CRID
- 1390282679512376576
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- NII Article ID
- 130001225127
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- NII Book ID
- AN00196191
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- COI
- 1:CAS:528:DyaE2sXntVSnsg%3D%3D
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- ISSN
- 18836844
- 00021407
- http://id.crossref.org/issn/00021407
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- NDL BIB ID
- 1734342
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed