Chemical Composition and Antibacterial Activity of Brassica oleracea var. botrytis Fruit Extracts

Abstract

Brassica oleracea var. botrytis is a seasonal plant, glider with paper shall, growing between them a pink bud unable to open.The Bassica oleracea var.botrytis belongs to the Crusaders family, and its flower constitutes the nutritional part.

Research has shown that the anti-oxidant activity of the Brassica oleracea var.botrytis improves the immune system and reduces the incidence of stroke, cancer and heart disease.

In this research, the flower of the Brassica oleracea var. botrytis was extracted using different solvents petroleum ether, chloroform and methanol. The percentage of the resultant precipitate was found to be 47.956 %.

Phytochemical analysis of the plant extract using (ethanol 80% and water ) revealed the presence of flavonoides, deoxy Sugars, coumarins , carbohydrates, saturated sterole, unsaturated sterole and cardinolindes.

Biological tests were done for each extract to test its activity against four types of bacteria. The results have shown that all extracts have anti-bacterial activity. In particular, the extracts of petroleum ether and chloroform have demonstrated an increased efficacy against the bacteria under study, compared to the other extract.

The petroleum ether extract was investigated by GC-MS technique and resulted in identification of thirty compounds as hydrocarbons, alcohols, free acids and aliphatic esters. It was proposed that the activity may well be due to the high content of acid esters.