Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
2027151 | Soil Biology and Biochemistry | 2006 | 4 Pages |
Abstract
In composting, organic matter is degraded by cellulases and ligninolytic enzymes at temperatures typically above 50 °C. This study isolated thermophilic microorganisms from a compost system that were then screened for cellulase and polyphenol oxidase activity. Temperature optima for the cellulases and polyphenol oxidases were determined as 70 and 40 °C, respectively. Maximal cellulase activity was determined as 1.333 mg glucose released ml−1 min−1. Maximal polyphenol oxidase activity attained was 5.111 nmol phenol ml−1 min−1. Cellulases were found to be stable over a period of 1 h. The isolated compost microorganisms were identified as strains of Bacillus using 16S ribosomal DNA sequence analysis.
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Authors
Lungisa Mayende, Brendan S. Wilhelmi, Brett I. Pletschke,