26973
MATERIALS AND METHODS : An essential oil - free infusion of Cy was prepared and polyphenol - rich fractions ( PFs ) were obtained from it by column chromatography .
 Chemical: polyphenol
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: polyphenol