고온성 사상균의 효소에 관한 연구 -(제4보) 고온성 사상균의 Xylanase 와 Laminaranase-

Stiudies on Enzyme of the Thermophilic Mold -(Part 4) Xylanase and Laminaranase from Thermophilic Mold-

1. 고온성 사상균인 Myriococcum albomyces의 밀기울 액체배양액에는 xylanase 와 laminaranase활성이 있었다. 2. Xylanase와 laminaranase의 최적 pH는 각각 5.0과 6.0이었다. 그리고 xylanase의 pH안 전범위는 $pH\;4.0{\sim}pH\;7.0$ 이었다. 3. Xylanase의 최적온도는 $55^{\cicr}C$이고 laminaranase의 척적온도는 $65^{\cicr}C$ 였다. 4. Xylanase의 열안전성은 $65^{\cicr}C$65에서 55분간, laminaranase 는 70 분간 안전하였다.

In order to investigate the action of thermophilic fungi on the xylan and its related substances, xylanase and laminaranase were examined using Myriococcum albomyces. In the extract from bran culture of Myriococcum albomyces, xylanase and laminaranase activity were recognized. 1) The optimum pH for xylanase and laminaranase activity were found to be pH 5.0 and pH 6.0. 2) The optimum temperature for xylanase and laminaranase activity were found to be $55^{\cicr}C$. 3) Thermal stability of xylanase for 55 minutes at $65^{\cicr}C$ and laminaranase for 60 minutes at $65^{\cicr}C$ did not influence their stability.