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Utilization of waste cellulose-III. Comparative study of the activity of the cellulases of Trichoderma viride and Aspergillus niger towards different cellulosic substrates

par David, Christiane ;Thiry, Philippe
Référence European Polymer Journal, 17, 9, page (957-960)
Publication Publié, 1981

Article révisé par les pairs

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Résumé :

Filter paper, carboxymethylcellulase and β-glucosidase activities have been determined and compared for cellulases originating from Trichoderma viride (TV) and Aspergillus niger (AN). The formation of glucose and of total reducing sugar has been measured as a function of time for the hydrolysis of cellulose I by the same quantity of FP units from TV, AN or a mixture of both strains. Long term efficiency is lower for AN but an important synergistic effect has been observed for the mixture of the enzymes. This synergistic action has been assigned to a better balance of endo- and exoglucanases and essentially to the addition to TV of thermally stable endoglucanases from AN. The β-glucosidases formed in large quantity by AN have been found to be thermally unstable and susceptible to product inhibition. They do not play any role in the observed synergistic action. © 1981.