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Solvent choice was the most important factor in the extraction of resveratrols , and mixed methanol and ethyl acetate [ 50 : 50 ( v / v ) ] had much higher extraction efficiency than the other five solvents tested .
 Chemical: resveratrols; Chemical: methanol; Chemical: ethyl acetate
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: resveratrols; Chemical: methanol; Chemical: ethyl acetate