文章基本信息

标题：Antimicrobial photodynamic activity by water-soluble curcumin against foodborne pathogens
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作者：Luana Carolina Martins Rosa ; Joao Vitor de Oliveira Silva ; Maíra Dante Formagio 等
期刊名称：Research, Society and Development
电子版ISSN：2525-3409
出版年度：2022
卷号：11
期号：8
页码：1-10
DOI：10.33448/rsd-v11i8.30870
语种：English
出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：Foodborne diseases and microbiological control represent the major challenge for the food industry. New technologies using natural agents have attracted increasing interest. Therefore, this study aimed to evaluate the in vitro susceptibility of Staphylococcus aureus and Escherichia coli to water-soluble curcumin (WSC) combined with acidic pH and blue LED light. The minimum inhibitory concentration (MIC) and bacterial photoinactivation were conducted using different photosensitizer concentrations. For S. aureus, the combination of WSC with lactic acid and 2.5 min illumination time reduced MIC from 500 μg/mL to 15.62 μg/mL, and WSC with citric acid reduced MIC from 125 μg/mL to 7.81 μg/mL after 5 min of light exposure. WSC without illumination did not inhibit E. coli growth (MIC >1,000 μg/mL), however, when applied with photodynamic therapy (5 min blue LED illumination), WSC at 62.5 μg/mL with lactic acid and WSC at 7.81 μg/mL with citric acid eliminated E. coli cells. The results obtained suggest that water-soluble curcumin with organic acids when combined with a blue LED light was effective against foodborne pathogens.
关键词：Curcumin;Foodborne pathogens;Photodynamic therapy.