A comparative study of the effect of natural and trade honey in the growth of some bacterial species

Abstract

The study includes the inhibitory activity of both natural and traditional hony on the some of gram positive and gram negative bacteria including ( proteus mirabilis , E.coli , serratia marcecens and Staph. aureus). The study showed the abcence of inhibitory activity of both types of un diluted hony on all types of tested bacteria after dilution of both type of honey at aratio of 1:2 . The result showed different effect for each one , the effect of 1:2 of natural honey on bacteria (E.coli , proteus mirabilis , Serratia marcecens) were (41 , 30 , 25)mm respectivily , that mean the largest effect was on the E.coli , while the effect of the traditional honey at the same concentration on the bacteria (E.coli , proteus mirabilis , Serratia marcecens , Staph. aureus) were (44, 30, 20, 10) mm consequently. The concentration 1:2 was considered as measurable concentration . other concentration were prepared and its effects was tested on the bacteria under study , the largest effect of the natural honey was showed to be on Serratia marcecens at dilution 1:4 and the zone of inhibition was 35mm , while the largest effect of traditional honey on the bacteria proteus mirabilis at dilution 1:4 and the diameter was 22mm