产纤维素酶黑曲霉LN0401 液体发酵条件的分析

辽宁石油化工大学学报 ›› 2006, Vol. 26 ›› Issue (2): 27-30.

产纤维素酶黑曲霉LN0401 液体发酵条件的分析

王战勇, 苏婷婷

辽宁石油化工大学, 辽宁抚顺113001

收稿日期:2006-03-09 出版日期:2006-02-25 发布日期:2006-02-25
作者简介:王战勇,(1978 -), 男, 辽宁抚顺市, 讲师, 在读硕士。

Analysis of Submerged Fermentation Conditions of spergillus niger LN0401 to Produce Cellulase

Liaoning University of Petroleum & Chemical Technology , Fushun Liaoning 113001 , P .R .China

Received:2006-03-09 Published:2006-02-25 Online:2006-02-25

摘要/Abstract

摘要： 利用黑曲霉LN0401 菌株液体发酵生产纤维素酶。分别考察培养基碳源、培养基氮源、培养时间、培养温度、培养起始pH 及孢子悬液接种的体积分数等因素对菌株产纤维素酶性能的影响。确定了黑曲霉LN0401 产纤维素酶的最优条件。即以质量分数为5%的稻草粉作为培养基碳源;质量分数为1 %的蛋白胨作为培养基氮源;培养时间为3 d ;培养温度为30 ℃;培养起始pH 为6.0;孢子悬液接种的体积分数为6%～ 8%接入装有100 m L 液体发酵培养基的250 mL 三角瓶内, 150 r/min 振荡培养。此条件下黑曲霉LN0401 的CMC 酶活为195 .6 ～ 198 .5 U/mL, FPA 酶活为27 .7 ～ 30 .4 U/ mL。

关键词: 　纤维素酶, 　黑曲霉, 　液体发酵

Abstract:

　 he Aspergillus niger LN0401 was used to produce cellulase by submerged fermentation .The influence factors of cultural medium carbon source , cultural medium nitrogen source , cultural time , cultural temperature , initial pH , and inoculation volumic fraction of spore suspending liquid on produced cellulose ability of the stain were studied .The optimum conditions of producing cellulose are as follows.The carbon source of culture medium is straw powder , and its mass fraction is 5%.The nitrogen source of culture medium is peptone, and its mass fraction is 1%.The cultural time is 3 d.The cultural temperature is 30 ℃.The initial pH is 6 .0 .The 6%～ 8 % inoculation volumic fraction of spore suspending liquid is added to 250 m L conical flask with 100mL submerged culture medium .Shaking table revolution is 150 r/ min.Under these conditions, the Aspergillus niger LN0401 CMC enzyme activity reaches to 195 .6 ～ 198 .5 U/mL , and FPA enzyme activity reaches to 27.7 ～ 30 .4U/mL .

Key words: 　Cellulase, Aspergillus niger , Submerged fermentation

王战勇, 苏婷婷. 产纤维素酶黑曲霉LN0401 液体发酵条件的分析[J]. 辽宁石油化工大学学报, 2006, 26(2): 27-30.

WANG Zhan -yong,SU Ting -ting. Analysis of Submerged Fermentation Conditions of spergillus niger LN0401 to Produce Cellulase[J]. Journal of Liaoning Petrochemical University, 2006, 26(2): 27-30.