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High activity xylanase from Aspergillus sydowii MG49 during growth on jute stalk lignocellulose
Author(s) -
Ghosh Mousumi,
Nanda Geeta
Publication year - 1993
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1993.tb00373.x
Subject(s) - xylanase , stalk , cellulase , xylan , fermentation , food science , chemistry , carbon source , enzyme assay , fungi imperfecti , enzyme , botany , biology , biochemistry , horticulture
Aspergillus sydowil MG49 produced 33.0 U mg ‐1 of extracellular xylanase activity when grown in liquid state fermeniation (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 β‐xylosidase activity. The xylanase exhibited optimum activity at 60°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.