Estradiol, Esteriol, Estrone and Novel Flavonoids from Date Palm Pollen
نویسندگان
چکیده
Column chromatography of the Egyptian date palm pollen, resulted in the isolation of estradiol, estrone among ten compounds from the hexane fraction. Also, besides rutin, additional four flavonoids from the ethyl acetate extract were isolated. HPLC analysis of the hexane fraction (using RFBDS C18 – isocratic acetonitrile /water 58:42) revealed the presence of estrone, estradiol and estriol compared with R t of reference standards. The Antioxidant activity by the DPPH method indicated that the ethyl acetate fraction possess a relatively strong antioxidant against DPPH radicals with value (SC50 $ 16.51 μg / ml ).
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