Concept explainers
a)
To Determine:
The gelatin can be added to the canned pineapple, but not to the fresh one.
Explanation of Solution
New pineapple contains Bromelain compounds, which is a proteolytic enzyme. The gelatin is a protein, which can be degraded by the proteolytic enzyme, hence, it cannot be used with the raw pineapple. In the case of the canned pineapple, the pineapple is preheated, which cause the deactivation of the bromelain. Hence, it can be added to the canned pineapple.
b)
To Determine:
The fresh pineapple juice can be used to tenderize milk.
Explanation of Solution
The tenderizing of meat is done by the breaking down of the collagen. This can be achieved by the treatment of the meat with the proteolytic enzyme present in the pineapple.
a) In the raw pineapple, the proteolytic enzyme is present, which can react with the gelatin. The canned pineapple has deactivated bromelain, which cannot react with the gelatin.
b) The proteolytic enzyme of the fresh pineapple tenderizes the meat.
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Chapter 20 Solutions
General, Organic, and Biological Chemistry: Structures of Life (5th Edition)
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