HIGH-ACTIVITY XYLANASE FROM ASPERGILLUS-SYDOWII MG49 DURING GROWTH ON JUTE STALK LIGNOCELLULOSE

被引：7

作者：

GHOSH, M ^{[1
]}

NANDA, G ^{[1
]}

机构：

[1] BOSE INST,DEPT MICROBIOL,P-1-12,CIT SCHEME VII M,CALCUTTA 700054,INDIA

来源：

LETTERS IN APPLIED MICROBIOLOGY | 1993年 / 17卷 / 02期

关键词：

D O I：

10.1111/j.1472-765X.1993.tb00373.x

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Aspergillus sydowii MG49 produced 33.0 U mg-1 of extracellular xylanase activity when grown in liquid state fermentation (LSF) with 1% ground jute stalk as the sole carbon source compared to 56.0 U mg-1 when pure xylan was used. Optimum time-course and pH for maximum enzyme production were 144 h and 4.0 respectively. The culture filtrate was devoid of any cellulase and beta-xylosidase activity. The xylanase exhibited optimum activity at 60-degrees-C and pH 5.5. Partially-fermented jute stalk could be recycled at least twice for xylanase production, exhibiting 25.8 and 17.4 U mg-1 activity in two later consecutive cycles respectively.

引用

页码：68 / 71

页数：4

共 8 条

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