828
The highest DPPH radical scavenging activity was found for N . crassifolia , with IC50 values of 9 . 6 and 12 . 1 micro g / mL for ethyl acetate and n - butanol fractions , respectively .
 Chemical: DPPH; Chemical: ethyl acetate; Chemical: n - butanol
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: DPPH, ethyl acetate, n - butanol 
Answer:
 Chemical: DPPH; Chemical: ethyl acetate; Chemical: n - butanol