Control of food pathogens by chlorophyll-based photosensitization in vitro
2009
Paskeviciute, E., Vilnius University, Vilnius (Lithuania). Institute of Materials Science and Applied Research | Buchovec, I., Vilnius University, Vilnius (Lithuania). Institute of Materials Science and Applied Research | Luksiene, Z., Vilnius University, Vilnius (Lithuania). Institute of Materials Science and Applied Research
Biophotonic technology based on photosensitization might serve as an effective, environmentally friendly and promising antibacterial tool. Data obtained indicate, that most important food pathogens Listeria monocytogenes, Bacillus cereus can be inactivated by chlorophyll derivative-based photosensitization. The inactivation of these microorganisms was very significant and reached 6 orders of magnitude in vitro. Salmonella typhimurium was more resistant to this treatment. When pathogen Bacillus cereus was inoculated in the food matrix the inactivation was lower (3-4 orders of magnitude). It is important to note, that Bacillus spores are susceptible to this treatment as well. Summarizing, chlorophyll-based photosensitization has potential to be effective antimicrobial tool and can be used to inactivate harmful and pathogenic microorganisms in different environments.
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