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Vinegar is obtained by double fermentati...

Vinegar is obtained by double fermentation of starch or sugary material. The first step of fermentation is achieved by addition of saccharomyces cerevisiae and second step is achieved by the addition of

A

Acetobacter aceti

B

Lactobacillus lactis

C

Penicillium notatum

D

E.coli

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The correct Answer is:
A
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The additon reaction of enol or enolate to the carbonyl function of aldehyde or ketone is known as aldol addition . The beta -hydroxyaldehyde or beta- hydroxyketone so obtained undergo dehydration in second step to produce a conjugated enone. The first part of reaction is an addition reaction and the second part is an elimination reaction. Carbonyl compound having alpha -hydrogen undergoes aldol condensation reaction . 2CH_(3)CH_(2)-overset(O)overset(||)C-Hunderset(Delta)overset(""^(Ө)OH)rarrCH_(3)CH_(2)CH=underset(CH_(3))underset(|)C-overset(O)overset(||)C-H Find out major product of following reaction :

NTA MOCK TESTS-NTA NEET SET 78-BIOLOGY
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