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In this study we describe a novel dark-green strain of Trichoderma viride exhibiting complete ensemble of cellulase, hemicellulase and ligninase activities on specific plate assays. To assess the cellulase production in detail, basal salt medium BSM was fortified with synthetic carboxymethyl cellulose CMC, glucose, sucrose, dextrose, lactose or maltose and natural flours of banana, banana peel, jack seed, potato or tapioca carbon as well as nitrogen yeast extract, beef extract, peptone, NaNO3 or NH4NO3 sources. Temperature and pH optima were 28°C and 4, respectively for the growth of the fungus in CMC-BSM with 137 U-mL cellulase activity, which was enhanced to 173 U-mL at 1.25% CMC concentration. Flours of potato and banana peel supported comparable yields of cellulase to that of CMC, while sodium nitrate was the preferred nitrogen source. The water soluble bluish-green pigment a probable siderophore extracted from the spores showed an absorption maximum at 292 nm. To sum up, the complete lignocellulolytic potential of this fungus offers great industrial significance, coupled with the production of a new pigment.

KEYWORDS

Trichoderma viride; Morphology; Liquid Fermentation; Bluish-Green Pigment

Cite this paper

Neethu, K. , Rubeena, M. , Sajith, S. , Sreedevi, S. , Priji, P. , Unni, K. , Josh, M. , Jisha, V. , Pradeep, S. and Benjamin, S. 2012 A novel strain of Trichoderma viride shows complete lignocellulolytic activities. Advances in Bioscience and Biotechnology, 3, 1160-1166. doi: 10.4236-abb.2012.38142.





Autor: Kannan Neethu, M. Rubeena, S. Sajith, S. Sreedevi, Prakasan Priji, K. N. Unni, M. K. Sarath Josh, V. N. Jisha, S. Pradeep, Sailas

Fuente: http://www.scirp.org/



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