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____________ releases methanol from pectyl-methyl esters.

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____________ releases methanol from pectyl-methyl esters.

(a) Pectin lyase

(b) Pectinesterase

(c) Cellulase

(d) Hemicellulase

The question was posed to me in an interview for internship.

My question is from Large Scale Use of Enzyme in division Large Scale Use of Enzyme in Solution of Enzyme Technology

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The correct option is (b) Pectinesterase

Explanation: Pectinesterase releases methanol from the pectyl methyl esters. Pectin lyase cleaves the pectin without the necessity of pectin methyl esterase action. Hemicellulase is a mixture of hydrolytic enzymes which includes xylan endo-1,3-b-xylosidase, xylan 1,4-b-xylosidase and a-L- rabinofuranosidase. Cellulase is used to cellulose to glucose and is part of enzyme preparation obtained from Trichoderma Reesei.

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