Thesis (M.Sc.) - Cairo University - Faculty of Pharmacy - Department of Pharmacognosy

Family Bignoniaceae includes 120 genera with 800 species mainly distributed within tropical floras of the world. It consists mainly of woody trees, shrubs and lianas. Some species are used worldwide as ornamentals. The eight species and cultivars of Tecoma were collected from different places like El-Orman, Mazhar, Antonyades and St.Mina's botanical gardens, to carry on phytochemical investigation of the most active species. The plants were first subjected to thorough botanical study and DNA fingerprinting to aid their authentication and identification in any future study.Preliminary phytochemical screening showed promising results with T. capensis (Thunb.) lindl. The HPLC analysis of the total methanolic extract of eight Tecoma species and cultivars showed that T. capensis (Thunb.) lindl. had the highest phenolic content among the eight plants and chemometric study was done to display the similarity between the eight plants. The LC-MS/MS of the total methanolic leaf extract of eight Tecoma species and cultivars lead to identification of 53 compounds and showed that T.capensis (Thunb.) lindl. was the richest extract of metabolite among the eight plants

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