Lehninger Principles of Biochemistry
7th Edition
ISBN: 9781464126116
Author: David L. Nelson, Michael M. Cox
Publisher: W. H. Freeman
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Chapter 6, Problem 1P
Summary Introduction
To determine: The biochemical basis for procedure used to processed corn to maintain its sweetness.
Introduction:
Corn which is also known as maize is a grain plant. Corn kernels contain many essential nutrients and are consumed by animals and humans as source of energy. It is a rich Vitamin A, B, E and minerals. It has high fiber content that plays an important role in digestion and prevent from constipation, hemorrhoids and colorectal cancer.
Expert Solution & Answer
Explanation of Solution
Explanation:
After the removal of husked ear of corn from plant, process of enzymatic conversion of sugar into starch is continue. Enzyme inactivation slows down the process of conversion of sugar to starch. Heat denaturation is used for denaturation of enzyme as well freezing the corn also lowers rest of activity of enzyme.
Conclusion
Conclusion:
Heating or blanching may cause protein denaturation which results in enzyme inactivation and freezing also inactive enzyme involved in conversion of sugar into starch.
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9. Which one of the compounds below is the major organic product obtained from
the following reaction sequence, starting with ethyl acetoacetate?
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1. NaOCH2CH3
CH3CH2OH
1. NaOH, H₂O
2. H3O+
3. A
OCH2CH3
2.
ethyl acetoacetate
ii
A
3. H3O+
OH
B
C
D
E
7. Only one of the following ketones cannot be made via an acetoacetic ester
synthesis. Which one is it?
Ph
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A
B
C
D
E
Chapter 6 Solutions
Lehninger Principles of Biochemistry
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