extraction and measurement of the quercetin flavonoid of prosopis farcta in khouzestan climatic condition

background and aims: medicinal plants are a valuable resource for flavonoids extraction. prosopis fracta is one of the plants with medicinal properties. prosopis fracta was found in abundance in southern regions in iran. coersetin is medicinal substance found in the fruit of this plant. quercetin is used in treatment of cancer and viral infections. this study was conducted to determine the quercetin flavonoid in prosopis fracta samples in different regions of khuzestan. methods: the prosopis fracta fruit collected from different regions of khuzestan (susangerd, ahvaz, abadan, mollasani, behbahan and ramhormoz). the beads were isolated from the fruit. shell and the flesh were dried in an oven. the dried materials were mixed and flavonoids extracted with a suitable solvent. the extract was injected into the high performance liquid chromatography (hplc) system. then, the compound, quercetin quantity and standard peak in each sample have been determined. results: based on the results, the susangerd samples (0.0033 mg/ml) and abadan (0.0008 mg/ml) have maximum and minimum levels of quercetin flavonoid, respectively. conclusions: quercetin flavonoid extracted from prosopis farcta fruits of susangerd is richer than other regions of khuzestan province. therefore, it is recommended to use the prosopis fracta fruit grown in susangerd for extraction of the quercetin flavonoid.