Investigation of Reaction of Gallic Acid with Superoxide Radical Anion, Hydroxyl Radical and Methyl Peroxy Radical

Abstract

In this paper are investigated the ΔHBDE, ΔHIP, and ΔHPA values of the corresponding reactions in the solvents of different polarity (water and pentylethanoate). An approach based on the enthalpies of the reactions related to the HAT, SPLET, and SET-PT mechanisms of gallic acid with some radicals (•OO-, •OH, and CH3OO•) is applied. The results show that thermodynamically favored mechanism depends on the polarity of reaction media and properties of free radical reactive species.

U ovom radu su ispitivane ΔHBDE, ΔHIP, i ΔHPA vrednosti odgovarajućih reakcija u rastvaračima različite (voda i pentiletanoat). Primenjen je pristup zasnovan na entalpijama reakcija povezanih sa HAT, SPLET, i SET-PT mehanizmima galne kiseline sa određenim radikalima (•OO-, •OH, i CH3OO•). Rezultati pokazuju da termodinamički favorizovan mehanizam zavisi od polarnosti rastvarača u kome se reakcija odvija i osobina slobodno radikalske vrste koja reaguje.