When Potatoes Are Peeled, the Enzyme Polyphenol Oxidase Causes Discoloration

question 36

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 100C 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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Definitions:

Elastic

Refers to the responsiveness of the quantity demanded or supplied of a good or service to a change in its price.

Excess Burden

The cost to society created by market inefficiency, which occurs when supply and demand are out of equilibrium.

Tax Revenue

The income that is collected by the government through various forms of taxation.

Excess Burden

The expense incurred by society due to market inefficiency, happening when there's a mismatch between supply and demand.