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Sathiyamoorthi E, Lee JH, Tan Y, Lee J. Antimicrobial and antibiofilm activities of formylchromones against Vibrio parahaemolyticus and Vibrio harveyi. Front Cell Infect Microbiol 2023; 13:1234668. [PMID: 37662002 PMCID: PMC10471482 DOI: 10.3389/fcimb.2023.1234668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 07/28/2023] [Indexed: 09/05/2023] Open
Abstract
Gram-negative Vibrio species are major foodborne pathogens often associated with seafood intake that causes gastroenteritis. On food surfaces, biofilm formation by Vibrio species enhances the resistance of bacteria to disinfectants and antimicrobial agents. Hence, an efficient antibacterial and antibiofilm approach is urgently required. This study examined the antibacterial and antivirulence effects of chromones and their 26 derivatives against V. parahaemolyticus and V. harveyi. 6-Bromo-3-formylchromone (6B3FC) and 6-chloro-3-formylchromone (6C3FC) were active antibacterial and antibiofilm compounds. Both 6B3FC and 6C3FC exhibited minimum inhibitory concentrations (MICs) of 20 µg/mL for planktonic cell growth and dose-dependently inhibited biofilm formation. Additionally, they decreased swimming motility, protease activity, fimbrial agglutination, hydrophobicity, and indole production at 20 µg/mL which impaired the growth of the bacteria. Furthermore, the active compounds could completely inhibit the slimy substances and microbial cells on the surface of the squid and shrimp. The most active compound 6B3FC inhibited the gene expression associated in quorum sensing and biofilm formation (luxS, opaR), pathogenicity (tdh), and membrane integrity (vmrA) in V. parahaemolyticus. However, toxicity profiling using seed germination and Caenorhabditis elegans models suggests that 6C3FC may have moderate effect at 50 µg/mL while 6B3FC was toxic to the nematodes 20-100 µg/mL. These findings suggest chromone analogs, particularly two halogenated formylchromones (6B3FC and 6C3FC), were effective antimicrobial and antibiofilm agents against V. parahaemolyticus in the food and pharmaceutical sectors.
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Affiliation(s)
| | - Jin-Hyung Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Republic of Korea
| | - Yulong Tan
- Special Food Research Institute, Qingdao Agricultural University, Qingdao, China
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Republic of Korea
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2
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Zhang Y, Zhang Y, Ma R, Sun W, Ji Z. Antibacterial Activity of Epigallocatechin Gallate (EGCG) against Shigella flexneri. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:4676. [PMID: 36981585 PMCID: PMC10048926 DOI: 10.3390/ijerph20064676] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/03/2023] [Accepted: 03/04/2023] [Indexed: 06/18/2023]
Abstract
Shigella flexneri (S. flexneri), a major intestinal pathogen, is a global public health concern. The biofilms formed by S. flexneri threaten environmental safety, since they could promote the danger of environmental contamination and strengthen the disease-causing properties of bacteria. Epigallocatechin gallate (EGCG) is an important catechin in tea, which has a high antibacterial activity. However, its antibacterial mechanism is still unclear. This research aims to quantify the antibacterial function and investigate the possible mechanism of EGCG inhibition of S. flexneri. The minimum inhibitory concentration (MIC) of EGCG against planktonic S. flexneri in the investigation was measured to be 400 μg/mL. Besides, SDS-PAGE and field emission scanning electron microscopy showed that EGCG interfered with protein synthesis and changed bacteria morphology. Through controlling the expression of the mdoH gene, EGCG was found to be able to prevent an S. flexneri biofilm extracellular polysaccharide from forming, according to experiments utilizing the real-time PCR test. Additional research revealed that EGCG might stimulate the response of S. flexneri to oxidative stress and prevent bacterial growth. These findings suggest that EGCG, a natural compound, may play a substantial role in S. flexneri growth inhibition.
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Affiliation(s)
- Yini Zhang
- School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
- International Joint Research Centre of Shaanxi Province for Pollutants Exposure and Eco-Environmental Health, Xi’an 710119, China
| | - Yeyue Zhang
- School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
- International Joint Research Centre of Shaanxi Province for Pollutants Exposure and Eco-Environmental Health, Xi’an 710119, China
| | - Ruiqing Ma
- School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
- International Joint Research Centre of Shaanxi Province for Pollutants Exposure and Eco-Environmental Health, Xi’an 710119, China
| | - Wanting Sun
- School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
- International Joint Research Centre of Shaanxi Province for Pollutants Exposure and Eco-Environmental Health, Xi’an 710119, China
| | - Zheng Ji
- School of Geography and Tourism, Shaanxi Normal University, Xi’an 710119, China
- International Joint Research Centre of Shaanxi Province for Pollutants Exposure and Eco-Environmental Health, Xi’an 710119, China
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3
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Effects of cuminaldehyde combined with mild heat against Salmonella enterica serovar Typhimurium in powdered infant formula. Food Control 2023. [DOI: 10.1016/j.foodcont.2023.109663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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4
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Correlation between Perturbation of Redox Homeostasis and Antibiofilm Capacity of Phytochemicals at Non-Lethal Concentrations. Antioxidants (Basel) 2022; 11:antiox11122451. [PMID: 36552659 PMCID: PMC9774353 DOI: 10.3390/antiox11122451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/05/2022] [Accepted: 12/08/2022] [Indexed: 12/15/2022] Open
Abstract
Biofilms are the multicellular lifestyle of microorganisms and are present on potentially every type of biotic or abiotic surface. Detrimental biofilms are generally targeted with antimicrobial compounds. Phytochemicals at sub-lethal concentrations seem to be an exciting alternative strategy to control biofilms, as they are less likely to impose selective pressure leading to resistance. This overview gathers the literature on individual phytocompounds rather than on extracts of which the use is difficult to reproduce. To the best of our knowledge, this is the first review to target only individual phytochemicals below inhibitory concentrations against biofilm formation. We explored whether there is an overall mechanism that can explain the effects of individual phytochemicals at sub-lethal concentrations. Interestingly, in all experiments reported here in which oxidative stress was investigated, a modest increase in intracellular reactive oxygen species was reported in treated cells compared to untreated specimens. At sub-lethal concentrations, polyphenolic substances likely act as pro-oxidants by disturbing the healthy redox cycle and causing an accumulation of reactive oxygen species.
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5
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Wang H, Li Y, Li Z, Ma R, Bai X, Zhan X, Luo K, Su R, Li X, Xia X, Shi C. Inhibition of Cronobacter sakazakii by Litsea cubeba Essential Oil and the Antibacterial Mechanism. Foods 2022; 11:foods11233900. [PMID: 36496708 PMCID: PMC9736361 DOI: 10.3390/foods11233900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 12/12/2022] Open
Abstract
Litsea cubeba essential oil (LC-EO) has anti-insecticidal, antioxidant, and anticancer proper-ties; however, its antimicrobial activity toward Cronobacter sakazakii has not yet been researched extensively. The objective of this study was to investigate the antimicrobial and antibiofilm effects of LC-EO toward C. sakazakii, along with the underlying mechanisms. The minimum inhibitory concentrations of LC-EO toward eight different C. sakazakii strains ranged from 1.5 to 4.0 μL/mL, and LC-EO exposure showed a longer lag phase and lower specific growth compared to untreated bacteria. LC-EO increased reactive oxygen species production, decreased the integrity of the cell membrane, caused cell membrane depolarization, and decreased the ATP concentration in the cell, showing that LC-EO caused cellular damage associated with membrane permeability. LC-EO induced morphological changes in the cells. LC-EO inhibited C. sakazakii in reconstituted infant milk formula at 50 °C, and showed effective inactivation of C. sakazakii biofilms on stainless steel surfaces. Confocal laser scanning and attenuated total reflection-Fourier-transform infrared spectrometry indicated that the biofilms were disrupted by LC-EO. These findings suggest a potential for applying LC-EO in the prevention and control of C. sakazakii in the dairy industry as a natural antimicrobial and antibiofilm agent.
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Affiliation(s)
- Haoran Wang
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Yulu Li
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Zhuo Li
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Run Ma
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Xiangyang Bai
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Xiangjun Zhan
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Kunyao Luo
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Ruiying Su
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Xuejiao Li
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Xiaodong Xia
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116304, China
| | - Chao Shi
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
- Correspondence: ; Tel.: +86-29-87092486; Fax: +86-29-87091391
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6
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Liu T, Wang J, Du MR, Wang YS, Fang X, Peng H, Shi QS, Xie XB, Zhou G. The interplays between epigallocatechin-3-gallate (EGCG) and Aspergillus niger RAF106 based on metabolism. Fungal Biol 2022; 126:727-737. [PMID: 36517140 DOI: 10.1016/j.funbio.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 08/21/2022] [Accepted: 09/03/2022] [Indexed: 01/07/2023]
Abstract
Epigallocatechin-3-gallate (EGCG) is a vital kind of catechin with high bioactive activities, however, limited research has been conducted to elucidate the molecular basis of EGCG biotransformation by Aspergillus niger and the underlying regulatory mechanisms. In this study, A. niger RAF106, isolated from Pu-erh tea, was applied to conduct the EGCG fermentation process, and the samples were collected at different fermentation times to determine the intermediary metabolites of EGCG and the metabolome as well as physiological activity changes of A. niger RAF106. The results demonstrated that EGCG enhances the growth of A. niger RAF106 by promoting conidial germination and hyphae branching. Meanwhile, metabolomic analyses indicated that EGCG significantly regulates the amino acid metabolism of A. niger RAF106. Furthermore, metabolomic analyses also revealed that the levels of original secondary metabolites in the supernatant of the cultures changed significantly from the fermentation stage M2 to M3, in which the main differentially changed metabolites (DCMs) were flavonoids. Most of these flavonoids exhibited antioxidant properties and thus increased the radical scavenging activity of the supernatant of the cultures. In addition, we also found several intermediary metabolites of EGCG, GA, and EGC, including oolonghomobisflavan A, (-)-Epigallocatechin 3, 5-di-gallate, (-)-Epigallocatechin 3-(3-methyl-gallate) (-)-Catechin 3-O-gallate, 4'-Methyl-(-)-epigallocatechin 3-(4-methyl-gallate), myricetin, prodelphinidin B, 7-galloylcatechin, and 3-hydroxyphenylacetic acid. These findings contribute to improving the bioavailability of EGCG and help mine highly active metabolites, which can be used as raw materials for the development of pharmaceutical intermediates or functional foods. In addition, the results also provide a theoretical basis for better control of the risk of A. niger origin and the regulatory mechanisms of the biotransformation process mediated by A. niger.
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Affiliation(s)
- Tong Liu
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China; Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Jie Wang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Min-Ru Du
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Ying-Si Wang
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China.
| | - Xiang Fang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Hong Peng
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China.
| | - Qing-Shan Shi
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China; Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Xiao-Bao Xie
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China; Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Gang Zhou
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China; Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
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7
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Chang Y, Xia S, Fei P, Feng H, Fan F, Liu Y, Qin L, Ma L, Song Q, Liu Y. Houttuynia cordata Thunb. crude extract inactivates Cronobacter sakazakii: Antibacterial components, antibacterial mechanism, and application as a natural disinfectant. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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8
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Li J, Wang R, Zhao L, Wang M, Wang R, Guo D, Yang Y, Li Y, Guan N, Shi Y, Xia X, Shi C. Stress tolerance and transcriptomic response analysis of Yersinia enterocolitica adapted to Origanum vulgare L. essential oil. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Bai X, Li X, Liu X, Xing Z, Su R, Wang Y, Xia X, Shi C. Antibacterial Effect of Eugenol on Shigella flexneri and Its Mechanism. Foods 2022; 11:foods11172565. [PMID: 36076751 PMCID: PMC9455010 DOI: 10.3390/foods11172565] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
Shigella flexneri (Sh. flexneri), which can be found in food and the environment, is a widespread food-borne pathogen that causes human diarrhea termed “shigellosis”. In this study, eugenol, a natural active substance, was investigated for its antibacterial activity against Sh. flexneri. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of eugenol against Sh. flexneri ATCC 12022 was 0.5 and 0.8 mg/mL. The growth curves and inhibitory effect in LB broth, PBS, vegetable juice, and minced pork showed that eugenol had a good activity against Sh. flexneri. Research findings indicated the superoxide dismutase activity of Sh. flexneri was inhibited after eugenol treatment, resulting in concentrations of intracellular reactive oxygen species and an increase in malondialdehyde. The flow cytometry analysis and field emission scanning electron microscopy results revealed obvious damage to cell membrane integrity and changes in the morphology of Sh. flexneri. In addition, the intracellular ATP concentration leaked from 0.5 μM to below 0.05 μM and the membrane potential showed a concentration-dependent depolarization after eugenol treatment. In summary, eugenol exerted strong antibacterial activity and has the potential to control Sh. flexneri in the food industry.
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Affiliation(s)
- Xiangyang Bai
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Xuejiao Li
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Xue Liu
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Zeyu Xing
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Ruiying Su
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Yutang Wang
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Xiaodong Xia
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116304, China
| | - Chao Shi
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
- Correspondence: ; Tel.: +86-29-8709-2486; Fax: +86-29-8709-1391
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10
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Pei J, Yu H, Qiu W, Mei J, Xie J. Antimicrobial Effect of Epigallocatechin Gallate Against Shewanella putrefaciens ATCC 8071: A Study Based on Cell Membrane and Biofilm. Curr Microbiol 2022; 79:297. [PMID: 35996024 DOI: 10.1007/s00284-022-02978-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 07/15/2022] [Indexed: 01/28/2023]
Abstract
The study was to evaluate the antimicrobial impacts and biofilm influences on epigallocatechin gallate (EGCG) against Shewanella putrefaciens ATCC 8071. The minimum inhibitory concentration (MIC) of EGCG on S. putrefaciens was 160 μg mL-1. The growth curve exhibited that EGCG had a good antimicrobial activity. EGCG caused damages to the bacterial cell wall and membrane based the intracellular component leakage and cell viability analysis. The damage to the membrane integrity by EGCG has been confirmed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). SEM shows deformation of shape, TEM shows cell membrane and wall damage, and the leakage of cytoplasmic material. The treatment with EGCG at 0.25× and 0.5× MIC resulted in decreased motility and elevated levels of oxidative stress, leading to an increase in biofilm formation. These results demonstrated that EGCG may be used as a natural preservative to reduce S. putrefaciens in fish during cold storage.
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Affiliation(s)
- Juxin Pei
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Huijie Yu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Weiqiang Qiu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China.,National Experimental Teaching Demonstration Center for Food Science and Engineering Shanghai Ocean University, Shanghai, China.,Shanghai Engineering Research Center of Aquatic Product Processing and Preservation, Shanghai, China.,Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai, China
| | - Jun Mei
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China. .,National Experimental Teaching Demonstration Center for Food Science and Engineering Shanghai Ocean University, Shanghai, China. .,Shanghai Engineering Research Center of Aquatic Product Processing and Preservation, Shanghai, China. .,Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai, China.
| | - Jing Xie
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China. .,National Experimental Teaching Demonstration Center for Food Science and Engineering Shanghai Ocean University, Shanghai, China. .,Shanghai Engineering Research Center of Aquatic Product Processing and Preservation, Shanghai, China. .,Shanghai Professional Technology Service Platform on Cold Chain Equipment Performance and Energy Saving Evaluation, Shanghai, China.
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11
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Kang S, Li X, Xing Z, Liu X, Bai X, Yang Y, Guo D, Xia X, Zhang C, Shi C. Antibacterial effect of citral on yersinia enterocolitica and its mechanism. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108775] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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12
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Action mode of cuminaldehyde against Staphylococcus aureus and its application in sauced beef. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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13
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Luo K, Zhao P, He Y, Kang S, Shen C, Wang S, Guo M, Wang L, Shi C. Antibacterial Effect of Oregano Essential Oil against Vibrio vulnificus and Its Mechanism. Foods 2022; 11:foods11030403. [PMID: 35159553 PMCID: PMC8834123 DOI: 10.3390/foods11030403] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/17/2022] [Accepted: 01/23/2022] [Indexed: 02/06/2023] Open
Abstract
Oregano essential oil (OEO) is an effective natural antibacterial agent, but its antibacterial activity against Vibrio vulnificus has not been widely studied. The aim of this study was to investigate the inhibitory effect and germicidal activity of OEO on V. vulnificus and its possible inhibition mechanism. The minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) of OEO against four V. vulnificus strains (ATCC 27562 and three isolates from seafoods) were from 0.06 to 0.15 μL/mL. Compared with untreated bacteria, OEO reduced the concentration of intracellular adenosine triphosphate (ATP), hyperpolarized the cell membrane, increased the level of reactive oxygen species (ROS), and increased the concentration of intracellular malondialdehyde (MDA), but there was no obvious DNA damage at the OEO test concentration. It was indicated that OEO inactivated V. vulnificus by generating ROS which caused lipid peroxidation of cell membranes, thereby reducing the permeability and integrity of cell membranes and causing morphological changes to cells, but there was no obvious damage to DNA. In addition, OEO could effectively kill V. vulnificus in oysters at 25 °C, and the number of bacteria decreased by 48.2% after 0.09% OEO treatment for 10 h. The good inhibitory effect and bactericidal activity of OEO showed in this study, and the economy and security of OEO make it possible to apply OEO to control V. vulnificus contamination in oysters and other seafoods.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Chao Shi
- Correspondence: ; Tel.: +86-29-87092486; Fax: +86-29-87091391
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14
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Antibacterial effect of phenyllactic acid against Vibrio parahaemolyticus and its application on raw salmon fillets. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112586] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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15
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Zhu W, Gao J, Liu H, Liu J, Jin T, Qin N, Ren X, xia X. Antibiofilm effect of sodium butyrate against Vibrio parahaemolyticus. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108422] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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16
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Li R, Zhou M, Lu J, Wei J. Antibiofilm Effects of Epigallocatechin Gallate Against Proteus mirabilis Wild-Type and Ampicillin-Induced Strains. Foodborne Pathog Dis 2021; 19:136-142. [PMID: 34726503 DOI: 10.1089/fpd.2021.0042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Proteus mirabilis is an opportunistic pathogen associated with nosocomial infections and foodborne diseases. The resistance and biofilm formation of P. mirabilis have been a great concern. In this study a multidrug-resistant P. mirabilis strain 012 was exposed to a lethal dose of ampicillin (10 mg/mL, 2.5-fold minimal bactericidal concentration) for 24 h at 37°C. After resuscitation and isolation, five variant isolates were selected and subjected to ampicillin induction by repeatedly streaking on ampicillin-containing plates (10 mg/mL) for at least three times. In biofilm formation assays by using crystal violet staining, we found that the variant strains had enhanced biofilm-forming abilities. (-)-epigallocatechin-3-gallate (EGCG) at a minimum inhibitory concentration (MIC) (256 μg/mL) significantly reduced the biofilm formation of all variant strains and the wild-type strain (p < 0.01). Sub-MIC of EGCG (128 μg/mL) suppressed the biofilms of wild-type and two variants. However, it stimulated the biofilms of the other three variants. The antibiofilm effects of EGCG against the wild-type strain were further confirmed by confocal laser scanning microscopy. Scanning electron microscopy revealed that EGCG induced variants to form more fibrous structures. Our results revealed that a lethal dose of antibiotic exposure increased antibiotic resistance and biofilm formation of P. mirabilis. EGCG may be used as a promising antibiofilm agent to prevent the P. mirabilis biofilm formation in the food industry. However, the sub-MIC of EGCG is not effective and will not be applied.
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Affiliation(s)
- Rui Li
- College of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Min Zhou
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Jieyuan Lu
- College of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Jiajun Wei
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
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17
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Wang R, Fang M, Hu X, Yu Y, Xiao X. Kojic acid and tea polyphenols inactivate
Escherichia coli
O157:H7
in vitro
and on salmon fillets by inflicting damage on cell membrane and binding to genomic DNA. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Ruifei Wang
- Research Center of Food Safety and Detection College of Food Science and Engineering South China University of Technology Guangzhou 510006 China
| | - Meimei Fang
- Research Center of Food Safety and Detection College of Food Science and Engineering South China University of Technology Guangzhou 510006 China
| | - Xinyi Hu
- Research Center of Food Safety and Detection College of Food Science and Engineering South China University of Technology Guangzhou 510006 China
| | - Yigang Yu
- Research Center of Food Safety and Detection College of Food Science and Engineering South China University of Technology Guangzhou 510006 China
| | - Xinglong Xiao
- Research Center of Food Safety and Detection College of Food Science and Engineering South China University of Technology Guangzhou 510006 China
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Wang W, Ren Z, Wang L, Cai Y, Ma H, Fang L, Su J. Nanoparticle-stabilized encapsulation of borneol and citral: Physicochemical characteristics, storage stability, and enhanced antibacterial activities. J Food Sci 2021; 86:4554-4565. [PMID: 34519054 DOI: 10.1111/1750-3841.15910] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 08/02/2021] [Accepted: 08/14/2021] [Indexed: 11/30/2022]
Abstract
Combinations of phytochemical(s) and engineered nanoparticles have attracted immense research interest due to their superior antimicrobial effects against contaminations. Herein, a Pickering emulsion is developed with capsulized phytochemicals including borneol and citral (BC-Cap) stabilized by hydrophilic amine-functionalized silica nanoparticles (SiO2 ─NH2 NPs). The droplet sizes of Pickering emulsion were 5.2 ± 1.4 µm under the condition that the concentrations of SiO2 ─NH2 NPs ranged from 0.6 to 1.2 wt.%, and the emulsion showed desirable stability during storage at 40°C for 365 days. In addition, the antibacterial and antibiofilm activities of the Pickering emulsion were investigated. The antibacterial effect of BC-Cap increased by two- to fourfold compared with citral or borneol alone. Treatment of BC/BC-Cap for 4 h eliminated the formation of biofilms generated by Listeria monocytogenes (at 5/1.25 mg/ml; 2 × MIC concentration) and Pseudomonas aeruginosa (at 5/2.5 mg/ml; 2 × MIC concentration). Further mechanistic studies revealed that the antibiofilm effects of BC-Cap were attributed to its ability to increase the porosity and lytic effects on the cell membrane of bacteria. Findings from the current study support the antibacterial and antibiofilm effects of BC-Cap Pickering emulsion as a promising food additive. PRACTICAL APPLICATION: The Pickering emulsion has potential applications as bacteriostatic agent in packaging materials and general surface disinfectant. The combination of borneol and citral is stabilized by hydrophilic amine-functionalized silica nanoparticles (SiO2 ─NH2 NPs). With the synergistic effects of borneol and citral, the Pickering emulsion shows a promising elimination effect against the formation of biofilms produced by Listeria monocytogenes and Pseudomonas aeruginosa.
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Affiliation(s)
- Wen Wang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Sino-Singapore International Joint Research Institute, Guangzhou, China
| | - Zhihui Ren
- Operation Development Center, Haid Group, Guangzhou, China
| | - Li Wang
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Ying Cai
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
| | - Hang Ma
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, Rhode Island, USA
| | - Liming Fang
- Sino-Singapore International Joint Research Institute, Guangzhou, China.,School of Materials Science and Engineering, South China University of Technology, Guangzhou, China
| | - Jianyu Su
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,Sino-Singapore International Joint Research Institute, Guangzhou, China.,Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou, China
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19
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Zampieri A, Babbucci M, Carraro L, Milan M, Fasolato L, Cardazzo B. Combining Culture-Dependent and Culture-Independent Methods: New Methodology Insight on the Vibrio Community of Ruditapes philippinarum. Foods 2021; 10:1271. [PMID: 34204939 PMCID: PMC8228196 DOI: 10.3390/foods10061271] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 05/30/2021] [Accepted: 05/31/2021] [Indexed: 01/01/2023] Open
Abstract
Vibrios represent a natural contaminant of seafood products. V. alginolyticus, V. cholerae, V. parahaemolyticus and V. vulnificus are the most hazardous species to human health. Given the worldwide consumption of mollusc products, reliable detection of Vibrio species is recommended to prevent human vibriosis. In this study, culture-dependent and -independent methods were compared and integrated to implement knowledge of the Manila clam Vibrio community composition. Here, 16S and recA-pyrH metabarcoding were applied to compare the microbial communities of homogenate clam samples (culture-independent method) and their culture-derived samples plated on three different media (culture-dependent method). In addition, a subset of plated clam samples was investigated using shotgun metagenomics. Homogenate metabarcoding characterized the most abundant taxa (16S) and Vibrio species (recA-pyrH). Culture-dependent metabarcoding detected the cultivable taxa, including rare species. Moreover, marine agar medium was found to be a useful substrate for the recovery of several Vibrio species, including the main human pathogenic ones. The culture-dependent shotgun metagenomics detected all the main human pathogenic Vibrio species and a higher number of vibrios with respect to the recA-pyrH metabarcoding. The study revealed that integration of culture-dependent and culture-independent methods might be a valid approach for the characterization of Vibrio biodiversity.
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Affiliation(s)
| | | | | | | | - Luca Fasolato
- Department of Comparative Biomedicine and Food Science, University of Padova, Agripolis, Viale dell’Università 16, 35020 Legnaro, Italy; (A.Z.); (M.B.); (L.C.); (M.M.); (B.C.)
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Qiao Y, Jia R, Luo Y, Feng L. The inhibitory effect of Ulva fasciata on culturability, motility, and biofilm formation of Vibrio parahaemolyticus ATCC17802. Int Microbiol 2021; 24:301-310. [DOI: 10.1007/s10123-021-00165-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/30/2020] [Accepted: 02/11/2021] [Indexed: 12/11/2022]
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21
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Prooxidant Effects of Epigallocatechin-3-Gallate in Health Benefits and Potential Adverse Effect. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:9723686. [PMID: 32850004 PMCID: PMC7441425 DOI: 10.1155/2020/9723686] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 07/29/2020] [Indexed: 01/17/2023]
Abstract
Epigallocatechin-3-gallate (EGCG) is the major polyphenolic compound present in green tea and is generally regarded as an effective antioxidant. However, its chemical reactivity makes it susceptible to generate reactive oxygen species (ROS) via autooxidation and exhibit prooxidant effects. The prooxidant actions of EGCG could play a dual role, being both beneficial and harmful. This review summarized recent research progress on (1) the anticancer, antiobesity, and antibacterial effects of EGCG and (2) the possible toxicity of EGCG. The major focus is on the involvement of prooxidant effects of EGCG and their effective doses used. Considering dosage is a crucial factor in the prooxidant effects of EGCG; further studies are required to find the appropriate dose at which EGCG could bring more health benefits with lower toxicity.
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