764
An efficient and solvent - free procedure was developed to improve the solubility and bioavailability of the poorly water - soluble drug puerarin by mechanochemical technology .
 Chemical: puerarin
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: puerarin