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14 August 2019 Decolonization of pathogens on living surfaces by antimicrobial photodynamic action is possible? (Conference Presentation)
Tim Maisch
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Proceedings Volume 11070, 17th International Photodynamic Association World Congress; 110700K (2019) https://doi.org/10.1117/12.2529971
Event: 17th International Photodynamic Association World Congress, 2019, Cambridge, Massachusetts, United States
Abstract
Contamination of food takes place in all stages of production process, packaging, storage, transportation, sales and cooking. Therefore large amounts of clean water are used throughout the food production process such as cleaning, sanitizing, peeling, cooling or cooking. Besides physical or chemical contamination a major part represents the biological contamination by different microbial species. In recent years Enterohaemorrhagic Escherichia coli (EHEC) caused a serious outbreak of food borne illness worldwide, where patients suffered from severe diarrhoea and in some cases from haemolytic-uremic syndrome. The source of infection for humans was contaminated food (e.g. bean sprout) with EHEC. Furthermore pigs, colonised with methicillin resistant Staphylococcus aureus (MRSA), has become an emerging risk to be a source of infection for humans. Therefore one important task will be preventing contamination of food with pathogens and spreading from people, pets and pests. One new technology for successful eradication of bacteria is the photodynamic process. This talk summarizes the potential of photodynamic decontamination of foodstuff and decolonization of porcine skin as a novel approach for improving hygiene standards as well as to safe clean water in the future. Summary In general photodynamic decontamination of living surfaces like plant food or porcine skin is possible. However successful eradication of pathogens (killing efficacy of > 99.9%) depends on the constitution and geometry of the living object.
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Tim Maisch "Decolonization of pathogens on living surfaces by antimicrobial photodynamic action is possible? (Conference Presentation)", Proc. SPIE 11070, 17th International Photodynamic Association World Congress, 110700K (14 August 2019); https://doi.org/10.1117/12.2529971
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KEYWORDS
Pathogens
Contamination
Skin
Bacteria
Industrial chemicals
New and emerging technologies
Packaging
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