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D-aminoacids are used in the production of _________

(a) glucose syrups

(b) low calorific sweetener

(c) insecticides

(d) sunscreen agents

The question was asked during an online exam.

I'd like to ask this question from Immobilized Enzymes topic in chapter Immobilized Enzymes and their Uses of Enzyme Technology

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Correct answer is (c) insecticides

Easy explanation: D-aminoacids are produced by enzyme hydantoinase from Pseudomonas striata. These are used in the production of antibiotics and insecticides. Glucose syrups can be produced with the help of enzyme invertase. Aspartase is used in the production of L-aspartic acid which is used a low calorific sweetener. Urocanic acid is a sun-screening agent which may be produced from L-histidine by histidase from Achromobacter liquidum.

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