Study of Some Cucurbita moschata Duchesne expoiret  Leaves Components and Effect of Its Extracts on Different Microorganisms and Identification of Some Flavonoids by HPLC

Kadir M. N. Jassim, Abdul

	Study of Some Cucurbita moschata Duchesne expoiret Leaves Components and Effect of Its Extracts on Different Microorganisms and Identification of Some Flavonoids by HPLC
Al-Mustansiriyah Journal of Science
Article 1, Volume 21, Issue 4, 2010, Pages 101-110
Author
Abdul Kadir M. N. Jassim
Abstract
In this study, the chemical components of the Cucurbita moschata Duchesne ex poiret leaves in the watery and alcoholic extracts were identified .The results showed that the extract had acidic nature and contain : glycosides ,tannins ,phenolic compounds ,flavonoids and proteins ,while the alkaloids , saponins and resins were not found. The effect of these extracts on different microorganisms were studied .It has been found that 50 mg/ml concentration was effective inhibitor of the growth of the Staphylocoous aureus and Proteus mirabilis ,specially when alcoholic extracts was used , while the 10 mg/ml concentration was efficient to inhibit fungal growth such like Aspergillus niger and Aspergillus flavus .The result also showed that there were high concentrations of the following trace elements in the leaves Na, K , Mg with 14.9, 13.6, 12.4 ppm , respectively and low concentrations of Zn, Fe with 3.1, 2 ppm , respectively. The flavonoids were identified using high performance liquid chromatography (HPLC), as compared with standard .The results showed present of kaempferol ,while morin was not found .

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