当前位置: 首页 > 文章 > 纤维素酶液中β-葡萄糖苷酶的分离纯化 南京林业大学学报(自然科学版) 2011,35 (4) 111-116
Position: Home > Articles > Isolation and purification of β-glucosidase from cellulase solution Journal of Nanjing Forestry University(Natural Sciences Edition) 2011,35 (4) 111-116

纤维素酶液中β-葡萄糖苷酶的分离纯化

作  者:
宋娜娜;宋向阳;连之娜;勇强;余世袁
单  位:
南京林业大学化学工程学院林木遗传与生物技术省部共建教育部重点实验室
关键词:
里氏木霉;黑曲霉;纤维素酶;β-葡萄糖苷酶;分离纯化
摘  要:
通过(NH4)2SO4分级沉淀、HiPrep 26/10 Desalting脱盐柱、Source15Q阴离子交换柱、Source 15 S阳离子交换柱、HiTrap 16/60 Sephacryl S-200 HR凝胶过滤等技术,分离纯化3种来源里氏木霉、黑曲霉、里氏木霉与黑曲霉混合纤维素酶液中的β-葡萄糖苷酶。结果表明,经SDS-PAGE电泳鉴定均为电泳纯,测得黑氏木霉、黑曲霉单独培养β-葡萄糖苷酶相对分子质量分别为68、129 ku,而混合菌培养分离得到两种β-葡萄糖苷酶分子质量大小分别为66.2、134 ku。与单独培养的β-葡萄糖苷酶相似。3种来源的β-葡萄糖苷酶经多步分离纯化后的纯化倍数分别为37.25、40.21、30.12,酶活回收率分别为20.1 2%、23.21%、28.56%。
译  名:
Isolation and purification of β-glucosidase from cellulase solution
作  者:
SONG Nana,SONG Xiangyang,LIAN Zhina,YONG Qiang,YU Shiyuan(Key Laboratory of Forest Genetics & Biotechnology,Ministry of Education,College of Chemical Engineering,Nanjing Forestry University,Nanjing,210037,China)
关键词:
Trichoderma reesei;Aspergillus niger;cellulase;β-glucosidase;isolation and purification
摘  要:
The β-glucosidase were separated and purified from cellulase solutions produced by Trichoderma reesei,Aspergillus niger,and mixed enzymes of T.reesei and A.niger through(NH4)2SO4 fractional precipitation,HiPrep 26/10 gel filtration,Source 15 Q and source 15 S ion-exchange columns,and HiTrep 16/60 Sephacryl S-200 HR gel column.Both β-1,4-glucosidase showed apparent homogeneity in SDS-PAGE.The estimated molecular masses of β-1,4-glucosidase were 68 and 129 ku from T.reesei and A.niger,respectively.Two kinds of β-glucosidases were purified from mixed culture of T.reesei and A.niger,two single subunit molecular masses were about 134 ku and 66.2 ku which are similar to the single culture.Three sources of β-GA through multi-step purification the purification multiple were 37.25,40.21,30.12 respectively.The recovery of enzyme activity were 20.12 %,23.21 %,28.56 %.

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