Essay
When potatoes are peeled, the enzyme polyphenol oxidase causes discoloration by catalyzing the oxidation of certain molecules, using O2 as a substrate.Explain the following observations:
a. If potatoes are peeled under water and kept there, browning is reduced.
b. Potatoes that have been boiled at 100C and then sliced do not turn brown.
c. If lemon juice (pH 3) is applied to newly peeled potatoes, they do not brown.
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(a) The presence of water may prevent O2 ...View Answer
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