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प्रश्न
Name the enzymes and write the reactions involved in the preparation of ethanol from sucrose by fermentation.
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उत्तर
Ethanol, C2H5OH, is obtained commercially by fermentation, the oldest method is from sugars. The sugar in molasses, sugarcane or fruits such as grapes is converted to glucose and fructose, (both of which have the formula C6H12O6), in the presence of an enzyme, invertase. Glucose and fructose undergo fermentation in the presence of another enzyme, zymase, which is found in yeast.
\[\ce{\underset{Sugar}{C12H22O11} + H2O ->[Invertase] \underset{Glucose}{C6H12O6} + \underset{Fructose}{C6H12O6}}\]
\[\ce{\underset{Glucose/Fructose}{C6H12O6} ->[Zymase] \underset{Ethanol}{2C2H5OH} + 2CO2}\]
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संबंधित प्रश्न
Among the following the one which reacts most readily with ethanol is:
Methanol and ethanol are miscible in water due to ____________.
If ethanol dissolves in water, then which of the following would be observed:
Wood spirit is known as acetone:
Write the IUPAC name of the following compound.
\[\begin{array}{cc}
\phantom{.}\ce{CH3 - CH - CH - CH - CH - CH3}\phantom{}\\
\phantom{......}|\phantom{......}|\phantom{......}|\phantom{.....}|\phantom{........}\\
\phantom{...}\ce{CH3}\phantom{...}\ce{OH}\phantom{...}\ce{C2H5}\phantom{.}\ce{OH}\phantom{...}\end{array}\]
Out of 2-chloroethanol and ethanol which is more acidic and why?
Suggest a reagent for conversion of ethanol to ethanal.
Arrange the following compounds in increasing order of acidity and give a suitable explanation.
Phenol, o-nitrophenol, o-cresol
The carbon-oxygen bond in phenol is slightly stronger than that in methanol. Why?
Arrange water, ethanol and phenol in increasing order of acidity and give reason for your answer.
Assertion: Ethanol is a weaker acid than phenol.
Reason: Sodium ethoxide may be prepared by the reaction of ethanol with aqueous \[\ce{NaOH}\].
Convert the following:
Propanenitrile to ethanol.
Tonics in general contain
Which of the following is known as wood spirit?
If the starting material is 1-methyl-1,2-epoxy cyclopentane, of absolute configuration, decide which one compound correctly represents the product of its reaction with sodium methoxide in methanol.
3, 3-dimethyl-1-butene was subject to following reactions:
