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Yu X, Yin Y, Wu Z, Cao H. An Assessment of Human Opportunistic Pathogenic Bacteria on Daily Necessities in Nanjing City during Plum Rain Season. Microorganisms 2024; 12:260. [PMID: 38399664 PMCID: PMC10892523 DOI: 10.3390/microorganisms12020260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 02/25/2024] Open
Abstract
The plum rain season is a special climatic phenomenon in east Asia, which is characterized by persistent rainfall, a high temperature, and humidity, providing suitable environmental conditions for certain pathogenic bacteria, thus increasing the incidence of respiratory, gastrointestinal, and urinary diseases. However, studies on human opportunistic pathogenic bacteria communities during the plum rain season are still limited. In this study, the characteristics of human opportunistic pathogenic bacterial communities on daily necessities during the non-plum and plum rain seasons were investigated using high-throughput sequencing technology. The results revealed that the relative abundance of human opportunistic pathogenic bacteria was higher in the plum rain season (cotton cloth: 2.469%, electric bicycles: 0.724%, rice: 3.737%, and washbasins: 5.005%) than in the non-plum rain season (cotton cloth: 1.425%, electric bicycles: 0.601%, rice: 2.426%, and washbasins: 4.801%). Both temperature and relative humidity affected human opportunistic pathogenic bacterial communities. Stochastic processes dominated the assembly process of human opportunistic pathogenic bacterial communities, and undominated processes prevailed. The stability of the co-occurrence network was higher in the non-plum rain season than that in the plum rain season. In addition, the proportion of deterministic processes showed the same trend as the complexity of the co-occurrence network.
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Affiliation(s)
- Xiaowei Yu
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; (X.Y.); (Y.Y.)
| | - Yifan Yin
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; (X.Y.); (Y.Y.)
| | - Zuoyou Wu
- Sir Run Run Shaw Hospital, Nanjing Medical University, Nanjing 211112, China
| | - Hui Cao
- Key Laboratory of Agricultural Environmental Microbiology, Ministry of Agriculture and Rural Affairs, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; (X.Y.); (Y.Y.)
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AGBOOLA TD, BISI-JOHNSON MA. OCCURRENCE OF Listeria monocytogenes IN IRRIGATION WATER AND IRRIGATED VEGETABLES IN SELECTED AREAS OF OSUN STATE, NIGERIA. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Sharma R, Gal L, Garmyn D, Bru D, Sharma S, Piveteau P. Plant Growth Promoting Bacterial Consortium Induces Shifts in Indigenous Soil Bacterial Communities and Controls Listeria monocytogenes in Rhizospheres of Cajanus cajan and Festuca arundinacea. MICROBIAL ECOLOGY 2022; 84:106-121. [PMID: 34405251 DOI: 10.1007/s00248-021-01837-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
The rhizosphere is a dynamic and complex interface between plant roots and microorganisms. Owing to exudates, a web of interactions establishes among the microbial members of this micro-environment. The present study explored the impact of a bacterial consortium (Azotobacter chroococcum, Bacillus megaterium and Pseudomonas fluorescens, ABP), on the fate of a human pathogen, Listeria monocytogenes EGD-e, in soil and in the rhizospheres of Cajanus cajan and Festuca arundinacea, in addition to its plant growth promoting effect. The study further assessed the impact these bioinoculants exert on the autochthonous soil bacterial communities. Experiments in sterilised soil inoculated with bioinoculants and L. monocytogenes revealed the inhibition of L. monocytogenes by approximately 80-fold compared to that without the consortium. Subsequently, experiments were conducted in non-sterile soil microcosms planted with C. cajan and F. arundinacea, and in bulk soil. The consortium led to a significant increase in plant growth in both plants and prevented growth of L. monocytogenes. However, the presence of resident soil bacterial communities overshadowed this inhibitory effect, and a sharp decline in L. monocytogenes populations (5-6 log reduction) was recorded under non-sterile soil conditions. A shift in the soil resident bacterial communities was observed upon amendment with the bioinoculants. A significant increase of potential Plant Growth Promoting Rhizobacteria (PGPR) and biocontrol agents was observed, while the abundance of potential phytopathogens dropped. The present study opens up new avenues for the application of such a consortium given their dual benefits of plant growth promotion and restricting phytopathogens as well as human pathogen.
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Affiliation(s)
- Richa Sharma
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Laurent Gal
- Agroécologie, AgroSup Dijon, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, 21000, Dijon, France
| | - Dominique Garmyn
- Agroécologie, AgroSup Dijon, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, 21000, Dijon, France
| | - David Bru
- Agroécologie, AgroSup Dijon, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, 21000, Dijon, France
| | - Shilpi Sharma
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Pascal Piveteau
- Agroécologie, AgroSup Dijon, INRAE, Université de Bourgogne, Université de Bourgogne Franche-Comté, 21000, Dijon, France.
- INRAE UR OPAALE, 17 avenue de Cucillé, 35044, Rennes, France.
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Effect of Hurdle Approaches Using Conventional and Moderate Thermal Processing Technologies for Microbial Inactivation in Fruit and Vegetable Products. Foods 2022; 11:foods11121811. [PMID: 35742009 PMCID: PMC9222969 DOI: 10.3390/foods11121811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/13/2022] [Accepted: 06/16/2022] [Indexed: 12/04/2022] Open
Abstract
Thermal processing of packaged fruit and vegetable products is targeted at eliminating microbial contaminants (related to spoilage or pathogenicity) and extending shelf life using microbial inactivation or/and by reducing enzymatic activity in the food. The conventional process of thermal processing involves sterilization (canning and retorting) and pasteurization. The parameters used to design the thermal processing regime depend on the time (minutes) required to eliminate a known population of bacteria in a given food matrix under specified conditions. However, due to the effect of thermal exposure on the sensitive nutrients such as vitamins or bioactive compounds present in fruits and vegetables, alternative technologies and their combinations are required to minimize nutrient loss. The novel moderate thermal regimes aim to eliminate bacterial contaminants while retaining nutritional quality. This review focuses on the “thermal” processing regimes for fruit and vegetable products, including conventional sterilization and pasteurization as well as mild to moderate thermal techniques such as pressure-assisted thermal sterilization (PATS), microwave-assisted thermal sterilization (MATS) and pulsed electric field (PEF) in combination with thermal treatment as a hurdle approach or a combined regime.
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BERRIOS-RODRIGUEZ A, OLANYA OM, UKUKU DO, NIEMIRA BA, MUKHOPADHYAY S, ORELLANA LE. Gamma radiation effects on the survival and reduction of Listeria monocytogenes on carrot and tomato. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.17622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Truong H, Garmyn D, Gal L, Fournier C, Sevellec Y, Jeandroz S, Piveteau P. Plants as a realized niche for Listeria monocytogenes. Microbiologyopen 2021; 10:e1255. [PMID: 34964288 PMCID: PMC8710918 DOI: 10.1002/mbo3.1255] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/09/2021] [Accepted: 11/18/2021] [Indexed: 12/27/2022] Open
Abstract
Listeria monocytogenes is a human pathogen. It is the causative agent of listeriosis, the leading cause of bacterial-linked foodborne mortality in Europe and elsewhere. Outbreaks of listeriosis have been associated with the consumption of fresh produce including vegetables and fruits. In this review we summarize current data providing direct or indirect evidence that plants can serve as habitat for L. monocytogenes, enabling this human pathogen to survive and grow. The current knowledge of the mechanisms involved in the interaction of this bacterium with plants is addressed, and whether this foodborne pathogen elicits an immune response in plants is discussed.
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Affiliation(s)
- Hoai‐Nam Truong
- Agroécologie, AgroSup Dijon, CNRS, INRAEUniversity Bourgogne Franche‐ComtéDijonFrance
| | - Dominique Garmyn
- Agroécologie, AgroSup Dijon, CNRS, INRAEUniversity Bourgogne Franche‐ComtéDijonFrance
| | - Laurent Gal
- Agroécologie, AgroSup Dijon, CNRS, INRAEUniversity Bourgogne Franche‐ComtéDijonFrance
| | - Carine Fournier
- Agroécologie, AgroSup Dijon, CNRS, INRAEUniversity Bourgogne Franche‐ComtéDijonFrance
| | - Yann Sevellec
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Food Safety, Salmonella and Listeria UnitParis‐Est UniversityMaisons‐AlfortCedexFrance
| | - Sylvain Jeandroz
- Agroécologie, AgroSup Dijon, CNRS, INRAEUniversity Bourgogne Franche‐ComtéDijonFrance
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Prevalence and characteristics of Listeria species from selected African countries. TROPICAL DISEASES TRAVEL MEDICINE AND VACCINES 2021; 7:26. [PMID: 34521480 PMCID: PMC8442394 DOI: 10.1186/s40794-021-00151-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 08/11/2021] [Indexed: 11/10/2022]
Abstract
Listeriosis, caused by Listeria spp., presents varying clinical manifestations among individuals, from moderate fecal infections such as diarrhea to severe infections such as septicemia, meningitis and abortion or newborn listeriosis in perinatal patients. In Africa, listeriosis is attributed to poor sanitation and cross-contamination in food processing environments, particularly ready to eat (RTE) foods including dairy products, leafy vegetables, fish and meat. Despite the global increase in reported cases and research on listeriosis, data from Africa remains scarce and this could lead to possible underestimation of the importance of listeriosis on the continent. This paper therefore presents a comprehensive overview of currently available reports on Listeria spp. in Africa with emphasis on molecular characteristics, antimicrobial susceptibility, and prevalence in food, animal and environmental samples. The majority of studies on Listeria spp. in Africa have so far focused on the prevalence and antibiotic susceptibility of L. monocytogenes isolated from RTE foods and raw meat but rarely from humans, animals, and the environment. The overall calculated average prevalence values from the available reports are 23.7 and 22.2% for Listeria spp. and L. monocytogenes, respectively. Listeria spp. isolated from different parts of Africa are generally sensitive to ciprofloxacin, but resistant to penicillin. The majority of these studies employed conventional culture and biochemical tests to characterize Listeria spp. However, the use of modern molecular techniques such as PCR and whole-genome sequencing is on the rise. Most of the studies employing molecular tools were carried out in South Africa and Nigeria, with the predominant strain reported in South Africa being ST6. In order to provide a better understanding of the importance of listeria in Africa, there is the need for extensive and coordinated studies using modern molecular-based techniques to characterize the various Listeria species, and to assess the disease epidemiology using the one health concept.
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Azimirad M, Nadalian B, Alavifard H, Negahdar Panirani S, Mahdigholi Vand Bonab S, Azimirad F, Gholami F, Jabbari P, Yadegar A, Busani L, Asadzadeh Aghdaei H, Zali MR. Microbiological survey and occurrence of bacterial foodborne pathogens in raw and ready-to-eat green leafy vegetables marketed in Tehran, Iran. Int J Hyg Environ Health 2021; 237:113824. [PMID: 34365294 DOI: 10.1016/j.ijheh.2021.113824] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 07/19/2021] [Accepted: 08/01/2021] [Indexed: 01/28/2023]
Abstract
Fresh leafy (FL) and ready-to-eat (RTE) vegetables are recognized as an important source of foodborne disease outbreaks worldwide. Currently, there are no data available for the prevalnce of bacterial foodborne pathogens (FBPs) in raw vegetables consumed in Iran. Here, we evalated the presence of common bacterial FBPs among 366 samples of raw vegetables including 274 FL and 92 RTE collected from 21 districts of Tehran. The presence of FBPs were screened using conventional microbiological culture methods and real-time PCR assays. Overall, a higher rate of bacterial contamination was detected in FL compared to RTE samples using both detection methods. The results obtained by microbiological methods showed that Staphylococcus aureus (134/366, 36.6%), followed by Escherichia coli (85/366, 23.2%) and Clostridium perfringens (66/366, 18%) were detetcted as the most prevalent pathogens in this study. Vibrio cholerae was not detected in any of the samples either by microbiological methods or by the real-time PCR assays. There was a noticeable reduction in the proportion of Campylobacter positive samples using conventional microbiological methods (3.5%) compared to the real-time PCR assay (20.7%). The proportion of FL and RTE positive samples obtained by conventional microbiological methods was significantly different (P < 0.05) for C. perfringens, Campylobacter spp. and S. aureus. The proportion of positive samples in FL and RTE vegetables obtained by the real-time PCR assays was significantly different (P < 0.05) for C. perfringens, S. aureus, Helicobacter pylori and STEC/EHEC, the last one was found more frequently in RTE than in FL samples. Our findings indicated a contamination of FL and RTE vegetables in Iran with a range of well-known and emerging FBPs. Positivity and the distribution of bacterial species from the current data indicated different contamination sources, and overall a lack of effective decontamination steps during the production chain. Moreover, further information about the quality of the water, the hygiene measures implemented during the processing, storage and marketing are required to better identify the critical points and define the proper measures.
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Affiliation(s)
- Masoumeh Azimirad
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Banafsheh Nadalian
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Helia Alavifard
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shaho Negahdar Panirani
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Solmaz Mahdigholi Vand Bonab
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fahimeh Azimirad
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Gholami
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Parnia Jabbari
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Yadegar
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Luca Busani
- Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - Hamid Asadzadeh Aghdaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Prevalence, Antibiogram and Biofilm Production of Listeria Monocytogenes from Faeces and Foetuses of Slaughtered Pregnant Cows: Environmental and Public Health Implications. FOLIA VETERINARIA 2021. [DOI: 10.2478/fv-2021-0013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Abstract
The indiscriminate slaughter of pregnant animals which characterizes most developing countries poses increasing environmental and public health risks from Listeria monocytogenes infections which are endemic in such settings. The available reports show increasing trends of Listeria monocytogenes infections in both humans and animals in Nigeria. This study examined the prevalence, antibiogram and biofilm production of L. monocytogenes from faeces and foetuses of slaughtered pregnant cows in Ibadan Central Abattoir, Nigeria. Faecal (n = 118) and foetal (n = 118) swabs were cultured and isolates tested for antibiotic susceptibility by Kirby-Bauer assay, while biofilm production was quantified following the standard procedures. The data were analysed using the Chi Square and Student’s t-test at P < 0.05. Listeria monocytogenes were isolated from five (4.2 %) and three (2.5 %) faeces and foetus swabs, respectively, without significant association with sample type (P = 0.50). The isolates were resistant to all the antibiotics tested except gentamicin; with significantly higher production of biofilm by those from foetal samples (P = 0.012). The detection of widespread antibiotic-resistant L. monocytogenes from faeces and foetuses has important environmental and public health implications, given the risk of contamination through faecal shedding and foetal handling. The biofilm production by the pathogen connotes its ability to persist in the environment, suggestive of the challenging effects to its control. Campaigns against indiscriminate slaughter of pregnant animals, and proper hygiene are advocated to ultimately safeguard human and animal health.
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Hadi J, Wu S, Brightwell G. Antimicrobial Blue Light versus Pathogenic Bacteria: Mechanism, Application in the Food Industry, Hurdle Technologies and Potential Resistance. Foods 2020; 9:E1895. [PMID: 33353056 PMCID: PMC7767196 DOI: 10.3390/foods9121895] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/12/2020] [Accepted: 12/16/2020] [Indexed: 12/12/2022] Open
Abstract
Blue light primarily exhibits antimicrobial activity through the activation of endogenous photosensitizers, which leads to the formation of reactive oxygen species that attack components of bacterial cells. Current data show that blue light is innocuous on the skin, but may inflict photo-damage to the eyes. Laboratory measurements indicate that antimicrobial blue light has minimal effects on the sensorial and nutritional properties of foods, although future research using human panels is required to ascertain these findings. Food properties also affect the efficacy of antimicrobial blue light, with attenuation or enhancement of the bactericidal activity observed in the presence of absorptive materials (for example, proteins on meats) or photosensitizers (for example, riboflavin in milk), respectively. Blue light can also be coupled with other treatments, such as polyphenols, essential oils and organic acids. While complete resistance to blue light has not been reported, isolated evidence suggests that bacterial tolerance to blue light may occur over time, especially through gene mutations, although at a slower rate than antibiotic resistance. Future studies can aim at characterizing the amount and type of intracellular photosensitizers across bacterial species and at assessing the oxygen-independent mechanism of blue light-for example, the inactivation of spoilage bacteria in vacuum-packed meats.
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Affiliation(s)
- Joshua Hadi
- AgResearch Ltd., Hopkirk Research Institute, Cnr University and Library Road, Massey University, Palmerston North 4442, New Zealand; (J.H.); (S.W.)
| | - Shuyan Wu
- AgResearch Ltd., Hopkirk Research Institute, Cnr University and Library Road, Massey University, Palmerston North 4442, New Zealand; (J.H.); (S.W.)
| | - Gale Brightwell
- AgResearch Ltd., Hopkirk Research Institute, Cnr University and Library Road, Massey University, Palmerston North 4442, New Zealand; (J.H.); (S.W.)
- New Zealand Food Safety Science and Research Centre, Tennent Drive, Massey University, Palmerston North 4474, New Zealand
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Sharma R, Gal L, Garmyn D, Bisaria VS, Sharma S, Piveteau P. Evidence of Biocontrol Activity of Bioinoculants Against a Human Pathogen, Listeria monocytogenes. Front Microbiol 2020; 11:350. [PMID: 32218775 PMCID: PMC7078112 DOI: 10.3389/fmicb.2020.00350] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 02/17/2020] [Indexed: 11/13/2022] Open
Abstract
Due to rhizodeposits and various microbial interactions, the rhizosphere is an extremely dynamic system, which provides a conductive niche not only for bacteria beneficial to plants but also for those that might pose a potential threat to humans. The importance of bioinoculants as biocontrol agents to combat phytopathogens has been widely recognized. However, little information exists with respect to their role in inhibiting human pathogens in the rhizosphere. The present study is an attempt to understand the impact of an established bacterial consortium, Azotobacter chroococcum, Bacillus megaterium, and Pseudomonas fluorescens, on the survivability of Listeria monocytogenes in the rhizosphere of Cajanus cajan and Festuca arundinacea. An experiment conducted in Hoagland's medium in the presence of C. cajan demonstrated that the presence of bioinoculants impaired growth of L. monocytogenes compared to that observed in their absence. On the other hand, in the presence of F. arundinacea, no significant differences were observed in the population dynamics of L. monocytogenes in the presence or absence of the bioinoculants. Agar plate assay through cross streak method revealed the inhibition of L. monocytogenes by bioinoculants. Potential bioactive compounds were identified by ultra-performance liquid chromatography-mass spectrometry (UPLC-MS). These results suggest that agricultural amendments can act as protective agents against human pathogens while enforcing plant growth promotion.
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Affiliation(s)
- Richa Sharma
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, India
| | - Laurent Gal
- Agroécologie, AgroSup Dijon, Institut National de la Recherche Agronomique, Université Bourgogne – Franche-Comté, Dijon, France
| | - Dominique Garmyn
- Agroécologie, AgroSup Dijon, Institut National de la Recherche Agronomique, Université Bourgogne – Franche-Comté, Dijon, France
| | - V. S. Bisaria
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, India
| | - Shilpi Sharma
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, New Delhi, India
| | - Pascal Piveteau
- Agroécologie, AgroSup Dijon, Institut National de la Recherche Agronomique, Université Bourgogne – Franche-Comté, Dijon, France
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Oyebanji OO, Bolarinwa KA, Olowokudejo JD. Diversity and distribution patterns of aquatic macrophytes in selected ecosystems of south western Nigeria. Afr J Ecol 2020. [DOI: 10.1111/aje.12717] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Prakash A, Vadivel V. Citral and linalool nanoemulsions: impact of synergism and ripening inhibitors on the stability and antibacterial activity against Listeria monocytogenes. Journal of Food Science and Technology 2019; 57:1495-1504. [PMID: 32180646 DOI: 10.1007/s13197-019-04185-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 11/08/2019] [Accepted: 11/17/2019] [Indexed: 12/21/2022]
Abstract
The present work explored the influence of individual and combinations of citral and linalool along with different Ostwald ripening inhibitors on the nanoemulsion stability and their antibacterial activity against Listeria monocytogenes. Nine different nanoemulsions (N1-N9) containing individual or combinations of citral, linalool with or without ripening inhibitors (medium chain triglycerides, coconut oil, sesame oil and castor oil) were formulated with 5% Tween-80 using ultrasonic emulsification. N1 formulation containing 5% citral without ripening inhibitors showed the least mean droplet diameter of 20.44 nm. Addition of linalool with the citral nanoemulsions was found to have deleterious effect on the thermodynamic and kinetic stabilities. Incorporation of ripening inhibitors controlled the increase of droplet size and polydispersity index in N6-N9 during the 90 days storage period, but decreased their antibacterial activity. N8 formulation containing sesame oil as ripening inhibitor was found to be the best in controlling Ostwald ripening. N1 formulation which showed the best antibacterial activity (MIC 0.312%) was found to disrupt the bacterial membrane integrity. N1 formulation also showed a promising biofilm inhibition of 83.51%. Therefore, N1 formulation containing 5% citral could be recommended as an efficient disinfectant against food-borne pathogen Listeria monoctyogenes in food industry. Moreover, addition of sesame oil in the nanoemulsion formulation of citral or linalool could increase their stability.
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Affiliation(s)
- Anand Prakash
- Chemical Biology Lab (ASK-II-409), School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamilnadu 613401 India
| | - Vellingiri Vadivel
- Chemical Biology Lab (ASK-II-409), School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamilnadu 613401 India
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Chen M, Chen Y, Wu Q, Zhang J, Cheng J, Li F, Zeng H, Lei T, Pang R, Ye Q, Bai J, Wang J, Wei X, Zhang Y, Ding Y. Genetic characteristics and virulence of Listeria monocytogenes isolated from fresh vegetables in China. BMC Microbiol 2019; 19:119. [PMID: 31159734 PMCID: PMC6547522 DOI: 10.1186/s12866-019-1488-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 05/10/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Ready-to-eat (RTE) vegetables have become increasingly popular along with the trend of moving towards a healthy lifestyle. However, RTE vegetables are at a higher risk of containing pathogens, maybe owing to lack of rigorous sanitization procedures. To understand the prevalence and potential risk of Listeria monocytogenes in RTE vegetables, we investigated the contamination level and characteristics of L. monocytogenes isolated from fresh vegetables. RESULTS Twenty-three (5.49%) of the 419 vegetables samples were positive for L. monocytogenes. Phylogenetic group I.1 (1/2a-3a) and II.2 (1/2b-3b-7) strains were predominant in 30 isolates, which accounted for 33.3 and 50.0%, respectively. Multilocus sequence typing of the 30 isolates grouped them into nine sequence types (STs). The most common STs were ST87 (36.7%) and ST8 (26.7%). Virulence analysis showed that all 30 isolates harbored eight classical virulence genes, 10.0% isolates harbored the llsX gene (ST3 and ST1 strains), and 36.7% carried the ptsA gene and belonged to ST87. Approximately 83.3% isolates carried full-length inlA, whereas five isolates had premature stop codons in inlA, three of which belonged to ST9 and two to ST8. Antibiotic susceptibility showed the isolates were varyingly resistant to 13 antibiotics, 26.7% of the isolates were multi-drug resistant. CONCLUSIONS The fresh vegetables contain some potential hypervirulent L. monocytogenes (ST1 and ST87) in the Chinese markets. In addition, the high rate of L. monocytogenes isolates was multi-drug resistant. Fresh raw vegetables may be a possible transmission route for L. monocytogenes infection in consumers. Therefore, sanitization of raw fresh vegetables should be strengthened to ensure their microbiological safety when used as RTE vegetables.
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Affiliation(s)
- Moutong Chen
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China
| | - Yuetao Chen
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China.,College of Food Science, South China Agricultural University, Guangzhou, China
| | - Qingping Wu
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China.
| | - Jumei Zhang
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China
| | - Jianheng Cheng
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China
| | - Fan Li
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China
| | - Haiyan Zeng
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China
| | - Tao Lei
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China
| | - Rui Pang
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China
| | - Qinghua Ye
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China
| | - Jianling Bai
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China
| | - Juan Wang
- College of Food Science, South China Agricultural University, Guangzhou, China
| | - Xianhu Wei
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China
| | - Youxiong Zhang
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, 58# Building, 100# Yard, XianlieZhong Road, Yuexiu District, Guangzhou, 510070, Guangdong Province, People's Republic of China
| | - Yu Ding
- Department of Food Science and Technology, Jinan University, Guangzhou, China
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15
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Matle I, Mbatha KR, Lentsoane O, Magwedere K, Morey L, Madoroba E. Occurrence, serotypes, and characteristics of
Listeria monocytogenes
in meat and meat products in South Africa between 2014 and 2016. J Food Saf 2019. [DOI: 10.1111/jfs.12629] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Itumeleng Matle
- Bacteriology DivisionARC‐Onderstepoort Veterinary Research Pretoria South Africa
- Department of Agriculture and Animal HealthScience Campus, University of South Africa Florida South Africa
| | - Khanyisile R. Mbatha
- Department of Agriculture and Animal HealthScience Campus, University of South Africa Florida South Africa
| | - Olivia Lentsoane
- Bacteriology DivisionARC‐Onderstepoort Veterinary Research Pretoria South Africa
| | - Kudakwashe Magwedere
- Department of AgricultureForestry and Fisheries, Directorate of Veterinary Public Health Pretoria South Africa
| | - Liesl Morey
- Biometry DivisionAgricultural Research Council Corporate Office Pretoria South Africa
| | - Evelyn Madoroba
- Department of Agriculture and Animal HealthScience Campus, University of South Africa Florida South Africa
- Department of Biochemistry and Microbiology, Faculty of Science and AgricultureUniversity of Zululand KwaDlangezwa South Africa
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16
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Iulietto MF, Sechi P, Cella E, Grispoldi L, Ceccarelli M, Al Ani AR, Işıklar B, Anil HM, Cenci-Goga BT. Inhibition of Listeria monocytogenes by a formulation of selected dairy starter cultures and probiotics in an in vitro model. ITALIAN JOURNAL OF ANIMAL SCIENCE 2018. [DOI: 10.1080/1828051x.2018.1450099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Maria Francesca Iulietto
- Dipartimento di Medicina Veterinaria, Laboratorio di Ispezione degli Alimenti di Origine Animale, University of Perugia, Perugia, Italy
| | - Paola Sechi
- Dipartimento di Medicina Veterinaria, Laboratorio di Ispezione degli Alimenti di Origine Animale, University of Perugia, Perugia, Italy
| | - Elisa Cella
- Dipartimento di Medicina Veterinaria, Laboratorio di Ispezione degli Alimenti di Origine Animale, University of Perugia, Perugia, Italy
| | - Luca Grispoldi
- Dipartimento di Medicina Veterinaria, Laboratorio di Ispezione degli Alimenti di Origine Animale, University of Perugia, Perugia, Italy
| | - Margherita Ceccarelli
- Dipartimento di Medicina Veterinaria, Laboratorio di Ispezione degli Alimenti di Origine Animale, University of Perugia, Perugia, Italy
| | | | | | | | - Beniamino Terzo Cenci-Goga
- Dipartimento di Medicina Veterinaria, Laboratorio di Ispezione degli Alimenti di Origine Animale, University of Perugia, Perugia, Italy
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17
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Jordan K, McAuliffe O. Listeria monocytogenes in Foods. ADVANCES IN FOOD AND NUTRITION RESEARCH 2018; 86:181-213. [PMID: 30077222 DOI: 10.1016/bs.afnr.2018.02.006] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Listeria monocytogenes causes listeriosis, a rare foodborne disease with a mortality rate of 20%-30%. The elderly and immunocompromised are particularly susceptible to listeriosis. L. monocytogenes is ubiquitous in nature and can contaminate food-processing environments, posing a threat to the food chain. This is particularly important for ready-to-eat foods as there is no heat treatment or other antimicrobial step between production and consumption. Thus, occurrence and control of L. monocytogenes are important for industry and public health. Advances in whole-genome sequence technology are facilitating the investigation of disease outbreaks, linking sporadic cases to outbreaks, and linking outbreaks internationally. Novel control methods, such as bacteriophage and bacteriocins, can contribute to a reduction in the occurrence of L. monocytogenes in the food-processing environment, thereby reducing the risk of food contamination and contributing to a reduction in public health issues.
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18
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19
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Prevalence and methodologies for detection, characterization and subtyping of Listeria monocytogenes and L. ivanovii in foods and environmental sources. FOOD SCIENCE AND HUMAN WELLNESS 2017. [DOI: 10.1016/j.fshw.2017.06.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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20
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ADESHINA I, ABDULWAHAB M, ADEWALE YA, SULEIMAN SB, TIAMIYU LO. Nijerya’nın Kwara Eyaletinde Tüketime Sunulan Kızartılmış Balıklar ile Kullanılan İşleme Levhası ve Aletlerde Listeria monocytogenes Varlığının Belirlenmesi. ACTA ACUST UNITED AC 2017. [DOI: 10.31196/huvfd.325713] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Prediction of Listeria monocytogenes ATCC 7644 growth on fresh-cut produce treated with bacteriophage and sucrose monolaurate by using artificial neural network. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2016.10.042] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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22
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Ngbede EO, Raji MA, Kwanashie CN, Kwaga JKP. Antimicrobial resistance and virulence profile of enterococci isolated from poultry and cattle sources in Nigeria. Trop Anim Health Prod 2016; 49:451-458. [PMID: 27987112 DOI: 10.1007/s11250-016-1212-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 12/08/2016] [Indexed: 12/12/2022]
Abstract
This study investigated the occurrence, antimicrobial resistance and virulence of Enterococcus from poultry and cattle farms. Three hundred and ninety samples: cloacal/rectal swabs (n = 260) and manure (n = 130] were processed for recovery of Enterococcus species. Standard bacteriological methods were used to isolate, identify and characterize Enterococcus species for antimicrobial susceptibility and expression of virulence traits. Detection of antibiotic resistance and virulence genes was carried out by polymerase chain reaction. Enterococcus was recovered from 167 (42.8%) of the 390 samples tested with a predominance of Enterococcus faecium (27.7%). Other species detected were Enterococcus gallinarum, Enterococcus faecalis, Enterococcus hirae, Enterococcus raffinosus, Enterococcus avium, Enterococcus casseliflavus, Enterococcus mundtii and Enterococcus durans. All the isolates tested were susceptible to vancomycin, but resistance to tetracycline, erythromycin, ampicillin and gentamicin was also observed among 61.0, 61.0, 45.1 and 32.7% of the isolates, respectively. Sixty (53.1%) of the isolates were multidrug resistant presenting as 24 different resistance patterns with resistance to gentamicin-erythromycin-streptomycin-tetracycline (CN-ERY-STR-TET) being the most common (n = 11) pattern. In addition to expression of virulence traits (haemolysin, gelatinase, biofilm production), antibiotic resistance (tetK, tetL, tetM, tetO and ermB) and virulence (asa1, gelE, cylA) genes were detected among the isolates. Also, in vitro transfer of resistance determinants was observed among 75% of the isolates tested. Our data revealed poultry, cattle and manure in this area are hosts to varying Enterococcus species harbouring virulence and resistance determinants that can be transferred to other organisms and also are important for causing nosocomial infection.
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Affiliation(s)
- Emmanuel Ochefije Ngbede
- Department of Veterinary Pathology & Microbiology, University of Agriculture Makurdi, PMB 2373, Makurdi, Benue State, Nigeria. .,Department of Veterinary Microbiology, Ahmadu Bello University Zaria, PMB 1045, Zaria, Kaduna State, Nigeria.
| | - Mashood Abiola Raji
- Department of Veterinary Microbiology, Ahmadu Bello University Zaria, PMB 1045, Zaria, Kaduna State, Nigeria.,Department of Veterinary Microbiology, University of Ilorin, PMB 1515, Ilorin, Kwara State, Nigeria
| | - Clara Nna Kwanashie
- Department of Veterinary Microbiology, Ahmadu Bello University Zaria, PMB 1045, Zaria, Kaduna State, Nigeria
| | - Jacob Kwada Pajhi Kwaga
- Department of Veterinary Public Health & Preventive Medicine, Ahmadu Bello University Zaria, PMB 1045, Zaria, Kaduna State, Nigeria
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