4079
Characterization study showed that mPPO from Snake fruit was optimally active at pH 6 . 5 , temperature 30 degrees C and active towards diphenols as substrates .
 Chemical: diphenols
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: diphenols