PubMed · 2009 · 564 citations · 31 references
AgricultureFood ScienceFood ChemistryFruit SciencePlant BiochemistryFood AntioxidantsFruit BiochemistryFruit PhysiologyPhenolic Compound AnalysisPhenolic Profile AnalysisAntioxidant Activity AssaysCitrus FruitsFruit PhytochemicalsPhenolic Composition AnalysisPhenolic Compound Antioxidant CapacityPhenolic Content AnalysisPhytochemical CompositionTotal Phenolic Content
Methanolic extracts of 13 commercially available citrus species, including peels and tissues grown in Iran, were evaluated for antioxidant activity using the DPPH assay, while total phenolic and flavonoid contents were quantified by Folin‑Ciocalteu and AlCl₃ colorimetric methods, respectively. The extracts exhibited IC₅₀ values ranging from 0.6 to 3.8 mg mL⁻¹, with phenolic contents between 66.5 and 396.8 mg GAE g⁻¹ extract and flavonoid contents from 0.3 to 31.1 mg QE g⁻¹ extract, yet no correlation was observed between these contents and antioxidant activity.
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.
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