title: Antioxidant activity, phenol and flavonoid contents of 13 citrus species peels and tissues.
abstract: Methanolic extracts of 13 commercially available citrus spp., peels and tissues growing in Iran were investigated for their antioxidant activity by DPPH method. IC50 for antioxidant activity ranged from 0.6-3.8 mg ml(-1). Total phenolic content of the citrus spp. samples (based on folin Ciocalteu method) varied from 66.5 to 396.8 mg gallic acid equivalent/g of extract and flavonoids content (based on colorimetric AlCl3 method) varied from 0.3 to 31.1 mg quercetin equivalent/g of extract. There were no correlation between the total phenolic and/or flavonoids contents and antioxidant activity in tissues and/or peels.
authors: Department of Horticulture, Faculty of Agriculture, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
authors: Kamran
authors: K
authors: Ghasemi
authors: Yosef
authors: Y
authors: Ghasemi
authors: Mohammad Ali
authors: MA
authors: Ebrahimzadeh
mesh_terms: D000975:Antioxidants / Q000032:analysis*; D001713:Biphenyl Compounds; D002957:Citrus / Q000737:chemistry*; D005419:Flavonoids / Q000032:analysis*; D016166:Free Radical Scavengers / Q000032:analysis*; D005638:Fruit / Q000737:chemistry*; D007492:Iran; D019800:Phenol / Q000032:analysis*; D010851:Picrates; D010936:Plant Extracts / Q000032:analysis
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D005419:Flavonoids; D016166:Free Radical Scavengers; D010851:Picrates; D010936:Plant Extracts; D019800:Phenol; C004931:1,1-diphenyl-2-picrylhydrazyl