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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

✍ Scribed by C. David; P. Thiry

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
273 KB
Volume
17
Category
Article
ISSN
0014-3057

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✦ Synopsis

Filter paper, carboxymethylcellulase and fl-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 fl-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.

📜 SIMILAR VOLUMES

Utilization of waste cellulose. IV. Comp
Utilization of waste cellulose. IV. Comparative study of the reactivity of different substrates in the enzymatic hydrolysis with trichoderma viride
✍ C. David; P. Thirỳ 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 445 KB 👁 3 views

## Abstract Different cellulosic substrates are compared. Cellulose II (grinded Cellophane®) was demonstrated to be a very reactive substrate without any other pretreatment. Indeed, Cellophane®, even coated one side with PVDC or nitrocellulose, can be hydrolyzed to a very high yield of glucose in a