【摘要】 对选育的木霉RS30菌种产胞外木聚糖酶的一些酶学性质进行了研究。结果显示:最适作用温度为50℃-55℃,随着温度的升高,酶的催化活性增强,但是酶的活性保持时间大大缩短;最适pH为5.5,木聚糖酶的稳定pH范围为4.5-7.5;该木聚糖酶对燕麦型木聚糖水解具有特殊的专一性;Mn2+和Ca2+对该木聚糖酶具有激活作用,Fe2+,Co2+对该木聚糖酶都具有抑制作用。更多还原

【Abstract】 Enzymatic property of xylanase from Trichoderma RS30 was studied in this paper.The result showed that the optimum temperature was 50℃-55℃ and the thermal stability of xylanase decreased with the increasing temperature.The optimum pH was 5.5 and the optimum rang of pH was 4.5-7.5 when the activity of xylanase was stable.This xylanase was enzyme specificity for hydrolysis oat xylan.Mn2+ and Ca2+ had activation on xylanase but not Fe2+ and Co2+.更多还原