15643
Protein derived from blue mussel ( Mytilus edulis ) was hydrolysed using four kinds of proteases ( pepsin , papain , neutrase and alcalase ) , and the neutrase hydrolysate ( BNH ) obtained by 3 - h hydrolysis exhibited the highest 2 , 2 - diphenyl - 1 - picrylhydrazyl ( DPPH ) radical scavenging activity compared to other hydrolysates .
 Chemical: 2 , 2 - diphenyl - 1 - picrylhydrazyl; Chemical: DPPH
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
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Answer:
 Chemical: 2 , 2 - diphenyl - 1 - picrylhydrazyl; Chemical: DPPH