16875
In case of phytotoxicity activity against Lemna acquinoctialis , highest phytotoxic effect was showed by ethyl acetate fraction ( LD ( 50 ) 91 . 0 mu g / ml ) , while chloroform fraction , plant crude extract and n - hexane , respectively , caused 50 % , 30 . 76 +/- 1 . 1 % and 30 . 7 +/- 1 . 1 % inhibitory action at maximum concentration used , that is , 1000 mu g / ml .
 Chemical: ethyl acetate; Chemical: chloroform; Chemical: n - hexane
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: ethyl acetate; Chemical: chloroform; Chemical: n - hexane