4074
Membrane - bound polyphenoloxidase ( mPPO ) an oxidative enzyme which is responsible for the undesirable browning reaction in Snake fruit ( Salacca zalacca ( Gaertn . ) Voss ) was investigated .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None