Acremonium alcalophilum JCM7366の低温反応性セルラーゼ

概要

論文の詳細を見る
A fungus which produced alkaline cellulase was isolated from soil in Kanagawa prefecture, Japan, using cellulose as a substrate, under alkaline conditions. The fungus was identified as Acremonium sp.[Acremonium sp. (A.sp.)was reported as a new species by Okada et al. (Trans. Mycol. Soc. Japan, 34,171-185 (1993)), and given the name Acremonium alcalophilum JCM 7366.] The characteristics of crude cellulase of A. sp. were studied. The fungus produced CMCase and xylanase, whose activities were found even at 0℃ and under both alkaline and acidic conditions.The maximal activities of the low-temperature-active CMCase and xylanase were obtained at 40℃ and pH 7.0,the maximal pH at 0℃ being the same as at 40℃. At 0℃, the activities of these enzymes were retained at more than 20% in the case of CMCase, and more than 40% in the case of xylanase, the activities at 40℃. Low-temperature-active CMCase and xylanase were induced in the presence of glucose as a carbon source, but not in the presence of cellobiose and sophorose as carbon sources.
社団法人日本生物工学会の論文
1996-01-25