Abstract
The electron transfer reactions between the trichloromethylperoxyl radical (Cl3COO·) and hydroxycinnamic acid derivatives, including chlorogenic acid, sinapic acid, caffeic acid, ferulic acid and 3,4-(methylenedioxy)cinnamic acid, have been studied by pulse radiolysis. The hydroxycinnamic acid derivatives, especially sinapic acid, are identified as good antioxidants for reduction of Cl3COO· via electron transfer reactions. From buildup kinetic analysis of phenoxyl radical, the rate constant for reaction of Cl3COO· with sinapic acid has been determined to be 8.2 × 107 dm3 mol-1 s-1, while the rate constants of electron transfer from other hydroxycinnamic acid derivatives to Cl3COO· were obtained to be about 2 × 107dm3 mol-1 s-1. The reaction of 3,4-(methylenedioxy)cinnamic acid with Cl3COO· was investigated as an evidence for the electron transfer mechanism.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
