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Influence of Agitation Speed on Tannase Production and Morphology of Aspergillus niger FETL FT3 in Submerged Fermentation

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Abstract

Agitation speed was found to influence the tannase production and fungal growth of Aspergillus niger FETL FT3. The optimal agitation speed was at 200 rpm which produced 1.41 U/ml tannase and 3.75 g/l of fungal growth. Lower or higher agitation speeds than 200 rpm produced lower enzyme production and fungal growth. Based on the SEM and TEM micrograph observation, there was a significant correlation between agitation speed and the morphology of the fungal mycelia. The results revealed an increase of the enzyme production with the change of the fungal growth morphology from filamentous to pelleted growth forms. However, the exposure to higher shear stress with an increasing agitation speed of the shaker also resulted in lower biomass yields as well as enzyme production.

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Authors and Affiliations

  1. School of Biological Sciences, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia

    I. Darah, G. Sumathi & S. H. Lim

  2. School of Chemical Sciences, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia

    K. Jain

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  1. I. Darah
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  2. G. Sumathi
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  3. K. Jain
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  4. S. H. Lim
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Correspondence to S. H. Lim.

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Darah, I., Sumathi, G., Jain, K. et al. Influence of Agitation Speed on Tannase Production and Morphology of Aspergillus niger FETL FT3 in Submerged Fermentation. Appl Biochem Biotechnol 165, 1682–1690 (2011). https://doi.org/10.1007/s12010-011-9387-8

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  • DOI: https://doi.org/10.1007/s12010-011-9387-8

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