Alinkina E S, Misharina T A, Fatkullina L D, Burlakova E B
Prikl Biokhim Mikrobiol. 2012 Sep-Oct;48(5):564-9.
The antiradical properties of three samples of ginger (Zingiber officinale R.)-juice from fresh rhizome, essential oil, and extracts (oleoresin)-were studied and compared with the properties of synthetic antioxidant ionol (butylatedhydroxy-toluene, BHT). Reaction antioxidants with stable free 2,2-diphenyl-1-picrylhydrozyl radicals were used as model systems. DPPH equivalents per gram of ginger sample, EC50, and antiradical efficiency (AE) were determined. The EC50 and AE values for ginger oleoresin and BHT were similar. They were the same as those of highly active natural antioxidants, and the values for essential oil and ginger juice were lower by two orders of magnitude. On the base of kinetic parameters, the ginger samples may belong to antiradical compounds with prolonged action.
对三种姜（姜科植物姜）样品——新鲜根茎汁、精油和提取物（油树脂）的抗自由基特性进行了研究，并与合成抗氧化剂离子醇（丁基化羟基甲苯，BHT）的特性进行了比较。以反应抗氧化剂与稳定自由基2,2-二苯基-1-苦基肼自由基作为模型体系。测定了每克姜样品的DPPH当量、EC50和抗自由基效率（AE）。姜油树脂和BHT的EC50和AE值相似。它们与高活性天然抗氧化剂的值相同，而精油和姜汁的值低两个数量级。根据动力学参数，姜样品可能属于具有长效作用的抗自由基化合物。
