Browsing by Author "Limra, Widya"

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    ISOLASI DAN IDENTIFIKASI SENYAWA STEROID DARI DAUN RIMBANG (SOLANUM TORVUM)
    (2014-03-27) Susilawati; Nasution, Hafni Indriati; Limra, Widya
    Chemical constituent has been isolated from the dry aerial parts of rimbang (Solanum torvum). The finely chopped material was extracted with methanol then fractionated into different polarity of solvent ; hexane, and ethil acetate. Separated done with colom chromatography at silica gel-60 by step gradien polarity. 345,96 mg of colourless needles (Melting point 144-1460Celcius) has been isolated from hexane fraction. Based on Liberman Burchard and Roseinhein reagen, spectrum ultraviolet and spectrum infra red, it was identified as steroid that have double bonding conjugation and -OH function