Add time:07/17/2019         Source:sciencedirect.com

Four cholesteryl esters of cinnamic acid derivatives, cholesteryl 2″-hydroxycinnamate, cholesteryl 3″-hydroxycinnamate, cholesteryl 4″-hydroxy-cinnamate and cholesteryl 3″,4″-dihydroxycinnamate, as well as cholestanyl 2″-hydroxycinnamate, which can be used as potential inhibitors of lipids oxidation, have been investigated for their radical scavenging efficiency by a chemiluminescence method. The rate constants of inhibition(k1nH) were determined in a model reaction of an initiated oxidation of tetraline at 353 K.The chemiluminescent results show that the four cholesteryl esters are efficient radical acceptors, and that among them, cholesteryl 3″,4″-dihydroxycinnamate is a particularly efficient radical scavenger with an inhibition rate constant of 1.8 × 105 dm3 mol1s−1.

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