20047
Free radical scavenging activity of oxidized lutein was higher by 32 . 7 % ( IC50 , 2 . 64 mu g ) than lutein ( IC50 , 5 . 28 mu g ) .
 Chemical: oxidized lutein; Chemical: lutein
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: oxidized lutein; Chemical: lutein