4512
While olive peroxidase ( POD ) showed the highest activity at 37 degrees C and high stability in the temperature range tested , polyphenoloxidase ( PPO ) exhibited the optimum activity at approximately 50 degrees C , but showed low stability at 40 degrees C , with a large variation in stability according to the olive cultivar .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None