A Phytochemical Investigation of certain pigments bearing plants

The genous Hibiscus inciudes about two hundredspecies of which Hibiscus subdariffa L• forms a wide spread rnedicina1 plant,’ commonly used as folklore medicine and as a refreshing drink. The main constituents of the ealyx of Hibiscus sabdariffa i. are Hibiscin, Hibiscetin and Hibiscic acid, while the petals contain Hibiacetrin as a main component, goseypitrin and a small amount of sabdaretin.The present work is divided into two parts:PART— LPhochemical study of!ibiacus sebdariffa L.This part includes ten chpters:Chter 1: Phytochernical screening & proximate analysis:A phytocheLnical screening of all the organs ofHibiscus eabdariffa ii. had beeii carried out including:A. Preliminary phyt ochemical screen in:The phytochemical screening of the different organs of Hibiscus eabdariffa L. revealed the presence of carbohydrates and/or glycosides, unnaturated sterols and/or triterpenes in all organs under investigation. ‘lavonoid compounds are present in all organs except seeds. Panama are only present in the cal.yx, leaves, stems and. flower. On the other hand, it estabiised the ubsence of crystalline and volat lie substances, curdenolides, saponinfi and nitrogenous base.