書誌事項
- タイトル別名
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- Studies on the Enzyme Treatment of Coffee Beans Part III
- コーヒーマメ ノ コウソ ショリ ニ カンスル ケンキュウ 3 Rhizopus niveus ノ ガラクタナーゼ ノ セイセイ ト コウソテキ セイシツ
- Purification and Some Properities of Galactanase from <i>Rhizopus niveus</i>
- <i>Rhizopus niveus</i>のガラクダナーゼの精製と酵素的性質
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抄録
The galactanase of Rhizopus niveus was extracted from koji culture, and separated into four fractions, F-I, F-II, F-III and F-IV, by the gel filtration on Sephadex G-100. These galactanases hydrolyzed coffee arabinogalactan. The extract also contained a β-galactosidase, which was separated from the galactanases by the gel filtration. The mannanase activity found in F-III and F-IV was removed by DEAE-Sephadex column chromatography of by mannan adsorption.<br> The pH optimum of these galactanases was about 5.0, and the pH stabilities were 3.0_??_9.0 for F-I, 3.0_??_6.5 for F-II, 3.0_??_7.5 for F-III and 3.0_??_8.0 for F-IV. The enzymes were all inactivated at temperatures above 50°C.<br> The degrees of hydrolysis of coffee arabinogalactan by the galactanases were in the order of F-I>F-II>F-III>F-IV. Whereas the solubilizing activities of the enzyme upon the insoluble arabinogalactan which contained a relatively large amount of mannose were in the order of F-IV>F-III>F-II>F-I.
収録刊行物
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- 日本農芸化学会誌
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日本農芸化学会誌 43 (12), 831-836, 1969
公益社団法人 日本農芸化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679511049216
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- NII論文ID
- 130001222002
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- NII書誌ID
- AN00196191
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- COI
- 1:CAS:528:DyaE3cXhtFOru7k%3D
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- ISSN
- 18836844
- 00021407
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- NDL書誌ID
- 8399893
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可