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Which enzyme catalyzes the oxidation of b-glucose to glucono-1,5-lactone and releasing hydrogen peroxide?

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Which enzyme catalyzes the oxidation of b-glucose to glucono-1,5-lactone and releasing hydrogen peroxide?

(a) Pectin lyase

(b) Cellulases

(c) Catalases

(d) Glucose oxidases

I had been asked this question in an online interview.

The doubt is from Large Scale Use of Enzyme in division Large Scale Use of Enzyme in Solution of Enzyme Technology

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Correct answer is (d) Glucose oxidases

The best explanation: Glucose oxidases is an enzyme which catalyzes the oxidation of b-glucose to glucono-1, 5-lactone and releasing hydrogen peroxide. Catalases acts on hydrogen peroxide and converts it to water and molecular oxygen. Cellulases breakdowns cellulose to glucose and galactose. Pectin lyase cleaves the pectin without the necessity of pectin methyl esterase action.

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