Ali Mohammad EBRAHİMZADEH, Fereshteh POURMORAD, Samira HAFEZİ

Atioxidant activities of Iranian corn silk

Mısır püskülü (MP) diüretik, antilithiasik, urikosurik ve antiseptik şeklinde geleneksel olarak kullanılmaktadır. Ödemin tedavisinde olduğu kadar sistitis, gout, böbrek taşları, nephritis ve prostat gibi hastalıklarda da kullanılır. MS’nin etanol-su ekstresinin antioksidant özellikleri farklı yöntemlerle çalışılmıştır. İlave olarak fenol ve şavonit muhtevası Folin Ciocalteu ve AlCl3 yöntemi ile çalışılmıştır. MP önemli miktarda fenol ve şavonit ihtiva eder. MP özütünün DPPH radikal süpürücü etkisi 1.6 mg ml–1 de 92.6, özütün, bütüle hidroksi toluen ve quersetin IC50 değeri 0.59, 0.053 ve 0.025 mg ml-1 bulunmuştur. Demir şelatlama aktivitesi standart maddeden daha azdır. MP özütü referansdan (quersetin) daha az nitrik oksit süpürücü etkiye sahiptir. Özüt yüksek indirgeme yeteneğine sahiptir. Ferrik tiosiyanat yöntemine göre linoleik asit peroksidasyonunda % 86 inhibisyona neden olur. MP nin geleneksel tıp alanında kullanılmasının nedeni antioksidant yeteneği olabilir.

İran mısır püskülünün antioksidant aktivitesi

Traditionally corn silk (CS) has been used as diuretic, antilithiasic, uricosuric, and antiseptic. It is used for the treatment of edema as well as for cystitis, gout, kidney stones, nephritis, and prostatitis. In the present study, the antioxidant properties of ethanol-water extract from CS were estimated by different methods. Also phenol and flavonoid content of the extract were measured by Folin Ciocalteu and AlCl3 assays. CS extract contained a significant amount of phenol and flavonoids. The percentage of DPPH radical scavenged by CS extract was 92.6 at a concentration of 1.6 mg ml–1. IC50 of the extract and the standard compounds butylated hydroxytoluene (BHA) and quercetin was 0.59, 0.053, and 0.025 mg ml–1, respectively. Iron chelating activity of the extract was less than the standard compounds. CS extract showed nitric oxide-scavenging effect less than the reference agent (quercetin). The extract showed a high reducing ability. According to ferric thiocyanate (FTC) method, the extract showed more than 88% inhibition of linoleic acid peroxidation. It might be concluded that some of the properties of CS in traditional medicine is due to its antioxidant ability.

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