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Impact of Quercetin against Salmonella Typhimurium Biofilm Formation on Food–Contact Surfaces and Molecular Mechanism Pattern

Department of Seafood Science and Technology, Institute of Marine Industry, Gyeongsang National University, Tongyeong 53064, Korea
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Author to whom correspondence should be addressed.
Academic Editors: Andrei Mocan and Simone Carradori
Foods 2022, 11(7), 977; https://doi.org/10.3390/foods11070977
Received: 2 March 2022 / Revised: 25 March 2022 / Accepted: 26 March 2022 / Published: 28 March 2022
Quercetin is an active nutraceutical element that is found in a variety of foods, vegetables, fruits, and other products. Due to its antioxidant properties, quercetin is a flexible functional food that has broad protective effects against a wide range of infectious and degenerative disorders. As a result, research is required on food-contact surfaces (rubber (R) and hand gloves (HG)) that can lead to cross-contamination. In this investigation, the inhibitory effects of quercetin, an antioxidant and antibacterial molecule, were investigated at sub-MIC (125; 1/2, 62.5; 1/4, and 31.25; 1/8 MIC, μg/mL) against Salmonella Typhimurium on surfaces. When quercetin (0–125 μg/mL) was observed on R and HG surfaces, the inhibitory effects were 0.09–2.49 and 0.20–2.43 log CFU/cm2, respectively (p < 0.05). The results were confirmed by field emission scanning electron microscopy (FE-SEM), because quercetin inhibited the biofilms by disturbing cell-to-cell connections and inducing cell lysis, resulting in the loss of normal cell morphology, and the motility (swimming and swarming) was significantly different at 1/4 and 1/2 MIC compared to the control. Quercetin significantly (p < 0.05) suppressed the expression levels of virulence and stress response (rpoS, avrA, and hilA) and quorum-sensing (luxS) genes. Our findings imply that plant-derived quercetin could be used as an antibiofilm agent in the food industry to prevent S. Typhimurium biofilm formation. View Full-Text
Keywords: Salmonella Typhimurium; antioxidant; quercetin; biofilm; rubber; hand gloves; gene expression Salmonella Typhimurium; antioxidant; quercetin; biofilm; rubber; hand gloves; gene expression
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MDPI and ACS Style

Roy, P.K.; Song, M.G.; Park, S.Y. Impact of Quercetin against Salmonella Typhimurium Biofilm Formation on Food–Contact Surfaces and Molecular Mechanism Pattern. Foods 2022, 11, 977. https://doi.org/10.3390/foods11070977

AMA Style

Roy PK, Song MG, Park SY. Impact of Quercetin against Salmonella Typhimurium Biofilm Formation on Food–Contact Surfaces and Molecular Mechanism Pattern. Foods. 2022; 11(7):977. https://doi.org/10.3390/foods11070977

Chicago/Turabian Style

Roy, Pantu K., Min G. Song, and Shin Y. Park. 2022. "Impact of Quercetin against Salmonella Typhimurium Biofilm Formation on Food–Contact Surfaces and Molecular Mechanism Pattern" Foods 11, no. 7: 977. https://doi.org/10.3390/foods11070977

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