著者
宇多川 隆
出版者
Brewing Society of Japan
雑誌
日本醸造協会誌 (ISSN:09147314)
巻号頁・発行日
vol.107, no.7, pp.477-484, 2012 (Released:2017-12-12)
参考文献数
7
被引用文献数
1 7

魚醤は魚を塩漬けにして,発酵される伝統的な調味料であり,その製造には約1~3年の長期間を要する。近年,タンパク質分解酵素製剤や麹を添加する方法が開発されているが,微生物汚染を避けるために食塩の添加は必須であった。著者は高温条件(55℃)において,微生物汚染を回避し,かつ,食塩阻害によるタンパク質分解酵素の阻害を回避するために,食塩無添加でサバ魚醤の発酵期間を15時間前後と大幅に短縮でき,ヒスタミン生成菌の汚染も回避でき,ヒスタミンの生成が10~20ppmに抑制できる速醸法を開発したので,解説頂いた。
著者
宇多川 隆 廣瀬 義夫
出版者
The Society of Synthetic Organic Chemistry, Japan
雑誌
有機合成化学協会誌 (ISSN:00379980)
巻号頁・発行日
vol.41, no.11, pp.1076-1087, 1983-11-01 (Released:2010-01-22)
参考文献数
48
被引用文献数
3 4

Synthesis of biologically interesting nucleosides by a combination of chemical and enzymatic reactions is reviewed. As a likely source of enzyme, Enterobacter aerogenes was selected and its nucleoside phosphorylases were found to catalyze a transglycosyl reaction between pentofuranose and purine or pyrimidine base at relatively high temperature of 60°C. Using this procedure, a variety of nucleoside analogs and nucleosidic antibiotics which have been shown to have antiviral or antitumor activity were synthesized. Noteworthy among them are adenine arabinoside, guanine arabinoside, 2'-amino-2'-deoxyadenosine, 2'-amino -2'-deoxyguanosine and Virazole. It is of special interest that adenine arabinoside can be produced in a good yield with ease and on a large scale. Furthermore, it is reported that the methodology also serves for the preparation of new biologically interesting nucleosides.
著者
森沢 弘和 宇多川 隆 山崎 晤弘
出版者
The Society of Synthetic Organic Chemistry, Japan
雑誌
有機合成化学協会誌 (ISSN:00379980)
巻号頁・発行日
vol.39, no.3, pp.205-216, 1981-03-01 (Released:2009-11-13)
参考文献数
56
被引用文献数
1

In this article, the syntheses of nucleoside by chemical or enzymatic transglycosylation method are reviewed. Particularly, the synthesis of purine arabinosides and purine 2'-amino-2'-deoxyribosides by combination of chemical reaction and enzymatic transglycosylation reaction is reported.