Planta Med 2012; 78 - PI235
DOI: 10.1055/s-0032-1320922

Antioxidant activity some endemic Iranian medicinal plants (Lamiaceae)

M Setayesh 1, A Ghasemi Pirbalouti 2, 3, A Siahpoosh 1, R Abdizadeh 4
  • 1School of Pharmacy, Ahwaz Jondishapur University of Medical Sciences, Ahwaz, Iran
  • 2Shahrekord Branch, Islamic Azad University, Researches Centre of Medicinal Plants & Ethno-veterinary, P O Box: 166, Shahrekord, Iran
  • 3Laboratories for Natural Products, Medicinal and Aromatic Plants, Department of Plant and Soil Sciences, University of Massachusetts, Amherst, MA 01003, USA
  • 4Shahrekord Branch, Islamic Azad University, Shahrekord, Iran

Oxidation, deterioration, and microbial reactions occurring in food products may cause economic loss. Deterioration of lipids is catalysed by different internal and external factors, such as free radicals, metal ions, light, and heat. In this study, some of the Iranian endemic plants were collected from their natural location in Chaharmahal va Bakhtiari. By maceration method with methanol solvent, extracts were obtained. Antioxidant activity of methanolic extracts was evaluated by three antioxidant assays: DPPH, FRAP & TEAC. In DPPH assay, comparing all the plant extracts for their IC50 values, Dracocephalum multicaule Montbr & Auch and Thymus daenensis Celak was the most effective scavenging of free radical, with value of 35.30 and 39mg/ml. Among the plant extracts were evaluated in FRAP assay, T. daenensis showed relatively strong ferric ion reducing activities with 2.37mg/ml. in TEAC assay, IC50 value of T. daenensis was determine to be 1.21mg/ml. Extract of T. daenensis exhibited the highest phenolics, and extract of D. multicaule exhibited the highest flavonoids.