Abstract
The tannase production by Paecilomyces variotii was confirmed by high performance thin layer chromatography (HPTLC), and substrate specificity of the tannase was determined by zymogram analysis in sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS–PAGE). A clear band of activity observed after electrophoresis of culture filtrate in non-denaturing gels indicated the production of extracellular tannase by P. varoitii. HPTLC analysis revealed that gallic acid was the enzymatic degradation product of tannic acid during the fermentation process. The optimum condition for tannase production was at 72 h of incubation in shaking condition and addition of 1.5% tannic acid, 1% glucose and 0.2% sodium nitrate at temperature of 35°C and pH of 5–7. The production of extracellular tannase from Paecilomyces variotii was investigated under optimized conditions in solid-state fermentation (SSF), submerged fermentation (SmF) and liquid surface fermentation (LSF) processes. The maximum extracellular tannase production was obtained within 60 h of incubation under SSF followed by SmF and LSF.
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Thanks are due to Prof. N. Anand, Director, CAS in Botany, University of Madras for facilities and Tamilnadu Pollution Control Board for partial financial support.
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Raaman, N., Mahendran, B., Jaganathan, C. et al. Optimisation of extracellular tannase production from Paecilomyces variotii . World J Microbiol Biotechnol 26, 1033–1039 (2010). https://doi.org/10.1007/s11274-009-0266-1
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DOI: https://doi.org/10.1007/s11274-009-0266-1