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Articles by M.R. Oveisi
Total Records ( 3 ) for M.R. Oveisi
  M. Hajimahmoodi , N. Sadeghi , B. Jannat , M.R. Oveisi , S. Madani , M. Kiayi , M.R. Akrami and A.M. Ranjbar
  Antioxidant activity of methanolic (50%) extracts of olive pulp (Olea europaea L.) was investigated. Total antioxidant activity, phenolic contents and reducing power in six Iranian olive cultivars were determined. The highest antioxidant activity (28.699 mmol FeII/100 g dry plant), total phenolic contents (2997 mg gallic acid/100 g dry plant) and reducing power (8.331 g Vitamin E/100 g dry plant) were detected in Mishen and the lowest in Conservalina. A linear positive relationship existed between the antioxidant activity, total phenolic compounds (r2 = 0.976) and reducing power of the tested olive pulp (r2 = 0.848). Iranian olives possess relatively high antioxidant activity due to contribution of phenolic compounds. The present study shows that Iranian olive cultivars are strong radical scavengers and can be considered as good sources of natural antioxidants for medicinal and commercial uses.
  M. Hajimahmoodi , M.R. Oveisi , N. Sadeghi , B. Jannat , M. Hadjibabaie , E. Farahani , M.R. Akrami and R. Namdar
  This study compares the antioxidant activity of ten different pomegranate cultivars grown in Iran using the ferric reducing power assay (FRAP assay), which is based on the reduction of a ferric-tripyridyl triazine complex to its ferrous, colored form in the presence of antioxidants. Aqueous solutions of known Fe+2 concentration, in the range of 100-1000 ╬╝mol L-1 were used for calibration. The results showed that among pulp and peel fractions the sour alac and sweet white peel cultivars had more FRAP value respectively. The pomegranate peel extract had markedly higher antioxidant capacity than the pulp extract. The peel extract of sweet white peel cultivar appeared to have more potential as a health supplement rich in natural antioxidants compared to the pulp and peel extracts of other pomegranate cultivars.
  M. Khanavi , G. Moghaddam , M.R. Oveisi , N. Sadeghi , B. Jannat , M. Rostami , M.A. Saadat and M. Hajimahmoodi
  Pomegranate (Punica granatum L.) is native to the Mediterranean region and has been used extensively as a medicine in many counties. Hyperoside is known as an important flavonoid with antioxidant activity and anti hypertension effect. Anthocyanins are the active component in several herbal medicines, thus accurate measurement of hyperoside and anthocyanins, along with their degradation indices, is very useful to food technologists and horticulturists. The aim of the current study was to determine the antioxidant capacity as hyperoside and anthocyanin content of ten different Iranian pomegranate cultivars. Spectroscopic analyses of the pomegranate showed Black peel cultivar had the highest hyperoside content (25.93±2.87, 620.41±30.32 mg/100 g) in its pulp and peel, respectively. Based on this study, the amounts of anthocyanin in pulp ranged between 1.56±0.05 and 3.89±0.07 mg g-1 which related to Sweet white peel and Sweet alac cultivars, respectively. More over the highest and also the lowest peel anthocyanin contents related to these cultivars. The results revealed that the hyperoside and also anthocyanin peel content of each variety is higher than its pulp content. In addition the potency of black peel (Medicinal pomegranate) and Sweet alac cultivars for prevention of coronary heart disease and hypertension were presented.
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