Quercetin subject has role antioxidant
Pharmacological research
Quercetin has been reported to inhibit the oxidation of other molecules and hence is classified as an antioxidant in vitro.  It contains a polyphenolic chemical substructure that stops oxidation in vitro by acting as a scavenger of free radicals. Quercetin has been shown to inhibit the PI3K/AKT pathway leading to downregulation of the anti-apoptotic protein Bcl-w. Quercetin activates or inhibits the activities of a number of proteins in vitro. For example, it is a nonspecific protein kinase enzyme inhibitor.
subject plays the role of subject acts as subject fulfills the role of subject is a subject serves as