Such change in pH will ultimately change its function.
Explanation:
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In this case, it is widely known that slight or noticeable changes in pH will affect the present interactions among amino acids in the bromelain (protein-digesting enzyme compound derived from pineapple's stem, fruit, and juice), which are able to change the way it folds and therefore its shape and its function since it will start catalyzing different process due to the different pH.