A new study published in the Journal of Medical Microbiology suggests that coriander oil is very effective in killing a number of bacteria strains

The researchers added that most of the bacteria were killed by using a solution that contained less than 1.6 percent of the oil.
Lead researcher Fernanda Domingues said that the results of the study suggest that coriander oil can be used as a very effective preservative against bacteria. “These results, showing a potent antibacterial activity against Gram-positive and Gram-negative bacteria due to membrane permeability, are noteworthy and justify the use of this plant, not only as a food flavouring agent, but also as a food preservative in order to prevent bacterial spoilage of foods”, he said.
Source-Medindia