导致水果和蔬菜发生褐变的酶主要是 _________ A: protein B: polyphenol oxidase C: amylase D: pectinase
导致水果和蔬菜发生褐变的酶主要是 _________ A: protein B: polyphenol oxidase C: amylase D: pectinase
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导致水果和蔬菜发生褐变的酶主要是 _________ A: protein B: polyphenol oxidase C: amylase D: pectinase