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The formulation of quinic acid , a food constituent demonstrating potential anticaries and antigingivitis properties , was investigated in an adhesive microparticulate delivery system with the goal of improving its effect by prolonging its residence time at the site of action .
 quinic acid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 quinic acid