Hemicellulase activity of antarctic microfungi

J. R. Bradner, R. K. Sidhu, M. Gillings, K. M H Nevalainen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

The mannanase (endo-β-1,4-mannanase; E.C. 3.2.1.78) and xylanase (endo-β-1,4-xylanase; E.C. 3.2.1.8) activity of five microfungal isolates from Antarctica were characterized at different temperatures and pH. In general, the hemicellulase activity of the antarctic strains occurred at least 10 °C and as much as 30 °C lower than that of a mesophilic reference strain. At 0 °C, two strains, a Phoma and a Penicillium, produced in excess of 40% of their measured maximum activity of mannanase. All strains had maximum hemicellulase activity in the range pH 4- 5, with Penicillium, Phoma and Alternaria strains exhibiting high (in excess of 80% of maximum) mannanase activity at pH 10. Three of the antarctic isolates exhibited high levels of xylanase activity over a pH range of 3-11.

Original languageEnglish
Pages (from-to)366-370
Number of pages5
JournalJournal of Applied Microbiology
Volume87
Issue number3
DOIs
Publication statusPublished - 1999

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