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Article

Curcumin-Mediated Sono-Photodynamic Treatment Inactivates Listeria monocytogenes via ROS-Induced Physical Disruption and Oxidative Damage

1
College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
2
Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
3
College of Food and Bioengineering, Fujian Polytechnic Normal University, Fuqing 350300, China
*
Author to whom correspondence should be addressed.
Foods 2022, 11(6), 808; https://doi.org/10.3390/foods11060808
Submission received: 11 February 2022 / Revised: 6 March 2022 / Accepted: 8 March 2022 / Published: 11 March 2022
(This article belongs to the Topic Food Processing and Preservation)

Abstract

Sono-photodynamic sterilization technology (SPDT) has become a promising non-thermal food sterilization technique because of its high penetrating power and outstanding microbicidal effects. In this study, Listeria monocytogenes (LMO) was effectively inactivated using curcumin as the sono-photosensitizer activated by ultrasound and blue LED light. The SPDT treatment at optimized conditions yielded a 4-log reduction in LMO CFU. The reactive oxygen species (ROS) production in LMO upon SPDT treatment was subsequently investigated. The results demonstrated SPDT treatment-induced excessive ROS generation led to bacterial cell deformation and membrane rupture, as revealed by the scanning electron microscope (SEM) and cytoplasmic material leakage. Moreover, agarose gel electrophoresis and SDS-PAGE further revealed that SPDT also triggered bacterial genomic DNA cleavage and protein degradation in LMO, thus inducing bacterial apoptosis-like events, such as membrane depolarization.
Keywords: sono-photodynamic sterilization; curcumin; Listeria monocytogenes; reactive oxygen species sono-photodynamic sterilization; curcumin; Listeria monocytogenes; reactive oxygen species
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MDPI and ACS Style

Zhang, J.; Zheng, P.; Li, J.; Yang, Y.; Zeng, S.; Qiu, J.; Lin, S. Curcumin-Mediated Sono-Photodynamic Treatment Inactivates Listeria monocytogenes via ROS-Induced Physical Disruption and Oxidative Damage. Foods 2022, 11, 808. https://doi.org/10.3390/foods11060808

AMA Style

Zhang J, Zheng P, Li J, Yang Y, Zeng S, Qiu J, Lin S. Curcumin-Mediated Sono-Photodynamic Treatment Inactivates Listeria monocytogenes via ROS-Induced Physical Disruption and Oxidative Damage. Foods. 2022; 11(6):808. https://doi.org/10.3390/foods11060808

Chicago/Turabian Style

Zhang, Jiawen, Peiying Zheng, Jing Li, Yijing Yang, Shaoxiao Zeng, Jianqing Qiu, and Shaoling Lin. 2022. "Curcumin-Mediated Sono-Photodynamic Treatment Inactivates Listeria monocytogenes via ROS-Induced Physical Disruption and Oxidative Damage" Foods 11, no. 6: 808. https://doi.org/10.3390/foods11060808

APA Style

Zhang, J., Zheng, P., Li, J., Yang, Y., Zeng, S., Qiu, J., & Lin, S. (2022). Curcumin-Mediated Sono-Photodynamic Treatment Inactivates Listeria monocytogenes via ROS-Induced Physical Disruption and Oxidative Damage. Foods, 11(6), 808. https://doi.org/10.3390/foods11060808

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