23502
MATERIAL AND METHODS : The antioxidant activity of MPG leaf hydromethanolic extract was determined by using both the 1 , 1 - diphenyl - 2 - picrylhydrazyl radical scavenging and the oxygen radical absorbance capacity in vitro assays .
 Chemical: 1 , 1 - diphenyl - 2 - picrylhydrazyl; Chemical: oxygen
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; Chemical: oxygen