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Which of the following micro-organisms do not produce lactase?

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in Enzyme Technology by (55.0k points)
Which of the following micro-organisms do not produce lactase?

(a) Trichoderma reesei

(b) Kluyveromyces fragilis

(c) Aspergillus Niger

(d) Aspergillus Oryzae

I got this question during an internship interview.

The origin of the question is Large Scale Use of Enzyme in chapter Large Scale Use of Enzyme in Solution of Enzyme Technology

1 Answer

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Best answer
Right choice is (a) Trichoderma reesei

Easiest explanation: Trichoderma reesei is used to produce cellulase in large scale and not in production of lactase. Kluyveromyces fragilis, Aspergillus Niger, Aspergillus Oryzae are used to produce lactase commercially. Lactases are subject to varying degrees of product inhibition by galactose and also show significant transferase ability and produces b-1, 6-linked galactosyl oligosaccharides.

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