6725
A positive correlation was found between the strength of protein - polyphenol interactions and ( a ) half time of protein decay in gastric conditions ( R ( 2 ) = 0 . 85 ) , ( b ) masking of total antioxidant capacity of protein - polyphenol complexes ( R ( 2 ) = 0 . 95 ) .
 polyphenol, polyphenol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 polyphenol, polyphenol