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The complex mode of action of the herbs was attributed possibly due to the high polyphenolic , flavanol and flavonoid content present in the extracts as observed by means of quantitative screening for phytochemicals .
 Chemical: polyphenolic; Chemical: flavanol; Chemical: flavonoid
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: polyphenolic; Chemical: flavanol; Chemical: flavonoid