1035
The antioxidant activity of the oil was evaluated in terms of their free - radical scavenging activity against 1 , 1 - diphenyl - 2 - picrylhydrazyl .
 Chemical: 1 , 1 - diphenyl - 2 - picrylhydrazyl
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: 1 , 1 - diphenyl - 2 - picrylhydrazyl