High-yield endoglucanase production by trichoderma harzianum IOC-3844 cultivated in pretreated sugarcane mill byproduct

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Abstract

The low-cost production of cellulolytic complexes presenting high action at mild conditions and well-balanced cellulase activities is one of the major bottlenecks for the economical viability of the production of cellulosic ethanol. In the present paper, the filamentous fungus Trichoderma harzianum IOC-3844 was used for the production of cellulases from a pretreated sugarcane bagasse (namely, cellulignin), by submerged fermentation. This fungal strain produced high contents of endoglucanase activity (6,358 U ̇ L-1) after 72 hours of process, and further relevant β -glucosidase and FPase activities (742 and 445 U ̇ L-1, resp.). The crude enzyme extract demonstrated appropriate characteristics for its application in cellulose hydrolysis, such as high thermal stability at up to 50°C, accessory xylanase activity, and absence of proteolytic activity towards azocasein. This strain showed, therefore, potential for the production of complete cellulolytic complexes aiming at the saccharification of lignocellulosic materials. Copyright © 2010 Aline Machado de Castro et al.

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Castro, A. M. de, Ferreira, M. C., Da Cruz, J. C., Pedro, K. C. N. R., Carvalho, D. F., Leite, S. G. F., & Pereira, N. (2010). High-yield endoglucanase production by trichoderma harzianum IOC-3844 cultivated in pretreated sugarcane mill byproduct. Enzyme Research, 2010. https://doi.org/10.4061/2010/854526

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