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首页> 外文期刊>Journal of Biomolecular Structure and Dynamics >Solvent effects are important in elucidating radical-scavenging mechanisms of antioxidants. A case study on genistein.
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Solvent effects are important in elucidating radical-scavenging mechanisms of antioxidants. A case study on genistein.

机译:溶剂作用对于阐明抗氧化剂的自由基清除机理很重要。金雀异黄素的案例研究。

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摘要

In two recent researches on antioxidant mechanisms of flavonoids and isoflavonoids, quantum chemical method was employed to calculate the proton dissociation energies, the bond dissociation energies and the ionization potentials for the phenols and derived radicals to help determine the radical-scavenging mechanisms. As the solvent effect was left out of consideration, the conclusion drawn from the calculation incurred some controversies. In the current study, we re-calculated the parameters for genistein and its anion by employing a B3LYP/6-311+G(d,p)//6-31G(d,p) method with solvent effect. Accordingly, a more reasonable explanation on the experimentally observed behavior of genistein as a radical scavenger was obtained. Therefore, solvent effect should be considered in the investigation of radical-scavenging mechanisms of antioxidants in polar solvents.
机译:在关于类黄酮和异类黄酮的抗氧化机理的两项最新研究中,采用量子化学方法计算了酚和衍生自由基的质子离解能,键离解能和电离势,以帮助确定自由基清除机理。由于不考虑溶剂效应,因此从计算得出的结论引起了一些争议。在当前的研究中,我们采用具有溶剂效应的B3LYP / 6-311 + G(d,p)// 6-31G(d,p)方法重新计算了染料木黄酮及其阴离子的参数。因此,获得了对染料木黄酮作为自由基清除剂的实验观察到的行为的更合理的解释。因此,在研究极性溶剂中抗氧化剂的自由基清除机理时,应考虑溶剂作用。

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