The effect of Curcurma longa (Turmeric) rhizomes extracts on pathogenic bacteria In comparison with standard antibiotics

Four extracts of Curcuma longa rhizomes ( commonly known as turmeric widly used as spice and coloring agent and known for its medical properties) were evaluated for their anti- bacterial action against pathogenic bacteria of gram-negative (Escherichia coli, Salmonella typhimurium ) and gram- positive (Staphylococcus aureus, Bacillus cereus) comparing with antibiotics (gentamycin, ampicillin and erythromycin). Essential oil which was extracted from turmeric found to be most active against pathogenic bacteria in comparison with other extracts (water, chloroform and methanol extract). Using 40 microgram/disc of essential oil of turmeric as a minimum inhibitory concentration posses significant activity on pathogenic gram-negative and gram- positive bacteria