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Effect of Some Ethanolic Plant Extracts on the Inhibition of Some Types of Pathogenic Bacteria and Causing Spoilage of Food | ||
| iraq journal of market research and consumer protection | ||
| Article 1, Volume 1, Issue 2, 2009, Pages 1-14 | ||
| Authors | ||
| Yahya A. A; Hindi M.G; Ageena S. J | ||
| Abstract | ||
| This study was carried out to study four types of herbs and spices: cumin fruits (cuminum cyminum), Black pepper seeds (Piper nigrum), Sage leaves (Salvia officinalis) and Pinus needles (Pinus halipensis), which they belong to these family: Umbellifrae, Piperaceae, Labiatae and Pinaceae respectively. The result of primary chemical characterization showed that all test plants Contain some active ingredients that included: Glycosides, Flavonoides, Risens and Alkaloids. Ethanol extracts For each plant were tested or examined for Antimicrobial activity toward the bacteria: gram positive bacteria like Bacillus subtilis, Bacillus cereus, Bacillus sterothermophilis and gram negative bacteria like Pseudomonas aeruginosa, Proteus mirabilus, Klebsiella pneumoniae, Escherichia coli, and Salmonella typhimurium. Disk diffusion method was used to test antibacterial activity. The results showed that antimicrobial activity depend on kind of extract and tested microorganism. The Inhibition zone of ethanolic extracts against bacteria ranged between (0-0.9) cm for cumin, (0.1-1.8) cm for black pepper, (0-0.7) cm for sage and (0-1.4) cm for pinus needles. From this result the black pepper ethanolic extract was the best as antibacterial agent compared with other plant extracts, and because it recorded a highest rate of inhibition zone toward study bacteria. As there is no inhibition activity from the other plant extracts toward Klebsiella pneumoniae. The sage ethanolic extract was not active at Bacillus sterothermophilis and Proteus mirabilus, pinus ethanolic extract was not active at Pseudomonas aeruginosa. | ||
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