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It has been suggested that most of these effects are a consequence of the antioxidant properties of polyphenols , but this idea is not completely accepted , and many other mechanisms have been proposed recently to explain the health effects of these compounds .
 Chemical: polyphenols
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