Abstract

LIPID OF SOME EDIBLE SOLANACEAE SPECIES; AND ITS ACTIVITY AGAINST SOME ANTIBIOTIC RESISTANT PATHOGENIC BACTERIA

*Amer, W. M. and Abdelmohsen G. 

Abstract

The present study was carried out to investigate the antibacterial activity of four common-edible species from family Solanaceae: namely: Capsicum frutescens L., Lycopersicum esculentum Mill., Solanum melongena L. and Solanum tuberosum L. Petroleum ether, chloroform, methanol and water extracts of each plant was tested against antibiotic resistant bacteria. 25 bacterial isolates from 25 hospitalized male and female patients, collected subjected to this study. The studied bacterial 25 isolates were antibiotic resistant bacteria namely: Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa. Different extracts of each plant were tested for its antibacterial activity. The lipid fraction (ether extract) showed the highest antibacterial activity; in all the studied species, this antibacterial active fraction (fatty acids and hydrocarbons) was identified using GC/Mass. Sixteen fatty acids were detected hexadecanoic acid (25.5%) and linolenic acid (23.6%) were the major fatty acids in Solanum melongena. Similar fatty acids namely: hexadecanoic acid (35%) and linolenic acid (26%) comprised also the major fatty acids in Lycopersicum esculentum. While, fifteen hydrocarbons and two sterol were detected from both species, dodecan-2-one (20%) and Pinane (18%) were the major hydrocarbons in Solanum melongena, the two compounds also were the major in Lycopersicum esculentum with different percentages (dodecan-2-one 40% and Pinane (25%). This work through light on the potential value of some common edible cultivated plant in Egypt.

Keywords: Solanaceae, antibacterial activity, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, GC-Mass.