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A simultaneous quantitative analytical method for 15 major polyphenols , e . g . five catechins ( 1 - 5 ) and 10 flavonols ( 6 - 15 ) , as functional constituents in the extracts of " tea flowers " , the flower buds of Camellia sinensis ( Theaceae ) , has been developed .
 Chemical: polyphenols; Chemical: catechins; Chemical: flavonols
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: polyphenols; Chemical: catechins; Chemical: flavonols