ULTRAVIOLET-C TREATMENTS FOR SPEARMINT DECONTAMINATION OF SALMONELLA SP. AND ESCHERICHIA COLI

This work was to evaluate the effect of ultraviolet-C (UV-C) radiation on spearmint leaves decontaminated with Salmonella sp. and Escherichia coli. Growth of Salmonella sp. and E. coli were evaluated in vitro after exposition to different UV-C radiation doses (0, 0.6, 1.2, 1.8, and 3.6 kJ/m²). In the in vivo assays, spearmint leaves were inoculated with the cocktail cell suspension of Salmonella sp. and E. coli then submitted to UV-C radiation at 3.6 kJ/m². The treated leaves were stored at 13°C for 4 days and evaluated for microbial growths.
The results showed that all UV-C doses was able to inhibit Salmonella spp. and E. coli growth in vitro, particularly the dose of 3.6 kJ/m² showed the best inhibition.
However, the UV-C radiation 3.6 kJ/m² did not inhibit the growth of both pathogens on the spearmint leaves.

Southeast Asia Symposium on Quality and Safety of Fresh and Fresh-Cut Produce

J. Poubol, K. Kukeeratikul, P. Jitareerat

ultraviolet-C, spearmint, Escherichia coli, Salmonella sp., microbial growth

https://doi.org/10.17660/ActaHortic.2010.875.33