15645
BNH - P7 exhibited good scavenging activity on DPPH radical , hydroxyl radical , and superoxide anion radical with EC ( 50 ) of 2 . 62 , 0 . 228 , and 0 . 072 mg / ml , respectively .
 Chemical: DPPH; Chemical: hydroxyl; Chemical: superoxide
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: DPPH; Chemical: hydroxyl; Chemical: superoxide