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Which of the following is not present in commercial preparation from Trichoderma reesei?

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Which of the following is not present in commercial preparation from Trichoderma reesei?

(a) cellulase

(b) glucan 1,4-b-glucosidase

(c) invertase

(d) cellulose 1,4-b-cellobiosidase

I had been asked this question by my school teacher while I was bunking the class.

This interesting question is from Large Scale Use of Enzyme topic in portion Large Scale Use of Enzyme in Solution of Enzyme Technology

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The correct answer is (c) invertase

The best I can explain: Commercial preparations from Trichoderma reesei consist of a mixture of enzymes which are as follows

• Cellulase which is an endo-1,4-D b-glucanase

• Glucan 1,4-b-glucosidase which is as exo-1,4-b-glucosidase

• cellulose 1,4-b-cellobiosidase which is an exo-cellobiohydrolase

Invertase degrades sucrose to glucose and fructose and is obtained from Saccharomyces cerevisiae.

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