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Miller KM, Tang F, Li S, Mullane KK, Shelton BR, Bui L, Bartlett DH, Nicholson WL. Carnobacterium Species Capable of Growth at Pressures Ranging Over 5 Orders of Magnitude, from the Surface of Mars (10 3 Pa) to Deep Oceans (10 7 Pa) in the Solar System. ASTROBIOLOGY 2023; 23:94-104. [PMID: 36450114 DOI: 10.1089/ast.2022.0043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Several permanently cold solar system bodies are being investigated with regard to their potential habitability, including Mars and icy moons. In such locations, microbial life would have to cope with low temperatures and both high and low pressures, ranging from ∼102 to 103 Pa on the surface of Mars to upward of ∼108-109 Pa in the subsurface oceans of icy moons. The bacterial genus Carnobacterium consists of species that were previously shown to be capable of growth in the absence of oxygen at low temperatures and at either low pressure or high pressure, but to date the entire pressure range of the genus has not been explored. In the present study, we subjected 14 Carnobacterium strains representing 11 species to cultivation in a complex liquid medium under anaerobic conditions at 2°C and at a range of pressures spanning 5 orders of magnitude, from 103 to 107 Pa. Eleven of the 14 strains showed measurable growth rates at all pressures tested, representing the first demonstration of terrestrial life forms capable of growth under such a wide range of pressures. These findings expand the physical boundaries of the capabilities of life to occur in extreme extraterrestrial environments.
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Affiliation(s)
- Kathleen M Miller
- Department of Microbiology and Cell Science, University of Florida, Merritt Island, USA
| | - Flora Tang
- Marine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, USA
| | - Sixuan Li
- Marine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, USA
| | - Kelli K Mullane
- Marine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, USA
| | - Brontë R Shelton
- Marine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, USA
| | - Lam Bui
- Marine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, USA
| | - Douglas H Bartlett
- Marine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, USA
| | - Wayne L Nicholson
- Department of Microbiology and Cell Science, University of Florida, Merritt Island, USA
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Mining Biosynthetic Gene Clusters in Carnobacterium maltaromaticum by Interference Competition Network and Genome Analysis. Microorganisms 2022; 10:microorganisms10091794. [PMID: 36144396 PMCID: PMC9504619 DOI: 10.3390/microorganisms10091794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/28/2022] [Accepted: 09/02/2022] [Indexed: 11/28/2022] Open
Abstract
Carnobacterium maltaromaticum is a non-starter lactic acid bacterium (LAB) of interest in the dairy industry for biopreservation. This study investigated the interference competition network and the specialized metabolites biosynthetic gene clusters (BGCs) content in this LAB in order to explore the relationship between the antimicrobial properties and the genome content. Network analysis revealed that the potency of inhibition tended to increase when the inhibition spectrum broadened, but also that several strains exhibited a high potency and narrow spectrum of inhibition. The C. maltaromaticum strains with potent anti-L. monocytogenes were characterized by high potency and a wide intraspecific spectrum. Genome mining of 29 strains revealed the presence of 12 bacteriocin BGCs: four of class I and eight of class II, among which seven belong to class IIa and one to class IIc. Overall, eight bacteriocins and one nonribosomal peptide synthetase and polyketide synthase (NRPS-PKS) BGCs were newly described. The comparison of the antimicrobial properties resulting from the analysis of the network and the BGC genome content allowed us to delineate candidate BGCs responsible for anti-L. monocytogenes and anti-C. maltaromaticum activity. However, it also highlighted that genome analysis is not suitable in the current state of the databases for the prediction of genes involved in the antimicrobial activity of strains with a narrow anti-C. maltaromaticum activity.
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Complementary Antibacterial Effects of Bacteriocins and Organic Acids as Revealed by Comparative Analysis of Carnobacterium spp. from Meat. Appl Environ Microbiol 2019; 85:AEM.01227-19. [PMID: 31399404 DOI: 10.1128/aem.01227-19] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 07/24/2019] [Indexed: 12/17/2022] Open
Abstract
Carnobacterium maltaromaticum and Carnobacterium divergens are often predominant in the microbiota of vacuum-packaged (VP) meats after prolonged storage at chiller temperatures, and more so in recent studies. We investigated the antibacterial activities of C. maltaromaticum and C. divergens (n = 31) from VP meats by phenotypic characterization and genomic analysis. Five strains showed antibacterial activities against Gram-positive bacteria in a spot-lawn assay, with C. maltaromaticum strains having an intergeneric and C. divergens strains an intrageneric inhibition spectrum. This inhibitory activity is correlated with the production of predicted bacteriocins, including carnobacteriocin B2 and carnolysin for C. maltaromaticum and divergicin A for C. divergens The supernatants of both species cultured in meat juice medium under anaerobic conditions retarded the growth of most Gram-positive and Gram-negative bacteria in broth assay in a strain-dependent manner. C. maltaromaticum and C. divergens produced formate and acetate but not lactate under VP meat-relevant conditions. The relative inhibitory activity by Carnobacterium strains was significantly correlated (P < 0.05) to the production of both acids. Genomic analysis revealed the presence of genes required for respiration in both species. In addition, two clusters of C. divergens have an average nucleotide identity below the cutoff value for species delineation and thus should be considered to be two subspecies. In conclusion, both bacteriocins and organic acids are factors contributing significantly to the antibacterial activity of C. maltaromaticum and C. divergens under VP meat-relevant conditions. A few Carnobacterium strains can be explored as protective cultures to extend the shelf life and improve the safety of VP meats.IMPORTANCE The results of this study demonstrated that both bacteriocins and organic acids are important factors contributing to the antibacterial activities of Carnobacterium from vacuum-packaged (VP) meats. This study demonstrated that formate and acetate are the key organic acids produced by Carnobacterium and demonstrated their association with the inhibitory activity of carnobacteria under VP meat-relevant storage conditions. The role of lactate, on the other hand, may not be as important as previously believed in the antimicrobial activities of Carnobacterium spp. on chilled VP meats. These findings advance our understanding of the physiology of Carnobacterium spp. to better explore their biopreservative properties for chilled VP meats.
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Heo J, Hamada M, Cho H, Weon HY, Kim JS, Hong SB, Kim SJ, Kwon SW. Weissella cryptocerci sp. nov., isolated from gut of the insect Cryptocercus kyebangensis. Int J Syst Evol Microbiol 2019; 69:2801-2806. [PMID: 31246166 DOI: 10.1099/ijsem.0.003564] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A taxonomic study of a Gram-stain-positive, rod-shaped, non-motile, non-spore-forming, catalase-negative bacterium, isolated from the gut of an insect, Cryptocercus kyebangensis collected from the mountainous area of Seoraksan, Yangyang-gun, Republic of Korea, was conducted. Its 16S rRNA gene sequence showed high similarity values to Weissella ghanensis LMG 24286T (95.9 %), Weissella beninensis 2L24P13T (95.9 %), Weissella fabalis M75T (95.7 %) and Weissella fabaria 257T (95.7 %). The phylogenetic tree indicated that the novel organism formed a cluster with W. ghanensis LMG 24286T, W. beninensis 2L24P13T, W. fabalis M75T and W. fabaria 257T. The G+C content was 41.1 mol% on the basis of the whole-genome sequence. Polar lipids consisted of diphosphatidylglycerol, phosphatidylglycerol, two unidentified aminophospholipids, one unidentified phospholipid and four unidentified lipids. The major cellular fatty acids were C18 : 1 ω9c, C16 : 0, C14 : 0, summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c) and summed feature 8 (C16 : 1 ω7c and/or C16 : 1 ω6c). The cell-wall peptidoglycan was of A4α type with the interpeptide bridge of Gly-d-Glu. Based on these results, strain 26KH-42T could be classified as a novel species of the genus Weissella, for which the name Weissellacryptocerci sp. nov. is proposed. The type strain is 26KH-42T (=KACC 18423T=NBRC 113066T).
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Affiliation(s)
- Jun Heo
- Agricultural Microbiology Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Moriyuki Hamada
- NITE Biological Resource Center (NBRC), National Institute of Technology and Evaluation, 2-5-8 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
| | - Hayoung Cho
- Agricultural Microbiology Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Hang-Yeon Weon
- Agricultural Microbiology Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Jeong-Seon Kim
- Agricultural Microbiology Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Seong-Beom Hong
- Agricultural Microbiology Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Soo-Jin Kim
- Agricultural Microbiology Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Soon-Wo Kwon
- Agricultural Microbiology Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
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Ramia NE, El Kheir SM, Taha S, Mangavel C, Revol-Junelles AM, Borges F. Multilocus sequence typing of Carnobacterium maltaromaticum strains associated with fish disease and dairy products. J Appl Microbiol 2018; 126:377-387. [PMID: 30307684 DOI: 10.1111/jam.14127] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 09/18/2018] [Accepted: 09/28/2018] [Indexed: 01/15/2023]
Abstract
AIMS Carnobacterium maltaromaticum is a lactic acid bacterium of technological interest in the field of dairy ripening and food bioprotection and is generally recognized as safe in the United States. As it is associated with fish infections, the European Food Safety Agency did not include this species in the qualified presumption safety list of micro-organisms. This implies that the risk assessment for the species has to be performed at the strain level. METHODS AND RESULTS Multilocus sequence typing (MLST) is a tool that (i) potentially allows to discriminate strains isolated from diseased fish from apathogenic strains and (ii) to assess the genetic relatedness between both groups of strains. In this study, we characterized by MLST 21 C. maltaromaticum strains including 16 strains isolated from diseased fish and 5 apathogenic dairy strains isolated from cheese. The resulting population structure was investigated by integrating these new data to the previously published population structure (available at http://pubmlst.org), which represents an overall of 71 strains. CONCLUSIONS This analysis revealed that none of the strains isolated from diseased fish is assigned to a clonal complex containing cheese isolates, and that 11 strains exhibit singleton genotypes suggesting that the population of diseased fish isolates is not clonal. SIGNIFICANCE AND IMPACT OF THE STUDY This study thus provides a population structure of C. maltaromaticum that could serve in the future as a reference that could contribute to the risk assessment of C. maltaromaticum strains intended to be used in the food chain.
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Affiliation(s)
- N E Ramia
- Université de Lorraine, LIBio, Nancy, France.,Laboratoire de Biotechnologies Appliquées, EDST, Université Libanaise, Tripoli, Lebanon
| | - S M El Kheir
- Université de Lorraine, LIBio, Nancy, France.,Laboratoire de Biotechnologies Appliquées, EDST, Université Libanaise, Tripoli, Lebanon
| | - S Taha
- Laboratoire de Biotechnologies Appliquées, EDST, Université Libanaise, Tripoli, Lebanon
| | - C Mangavel
- Université de Lorraine, LIBio, Nancy, France
| | | | - F Borges
- Université de Lorraine, LIBio, Nancy, France
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Hilgarth M, Behr J, Vogel R. Monitoring of spoilage-associated microbiota on modified atmosphere packaged beef and differentiation of psychrophilic and psychrotrophic strains. J Appl Microbiol 2018; 124:740-753. [DOI: 10.1111/jam.13669] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 11/17/2017] [Accepted: 12/05/2017] [Indexed: 11/28/2022]
Affiliation(s)
- M. Hilgarth
- Technische Universität München; Lehrstuhl für Technische Mikrobiologie; Freising Germany
| | - J. Behr
- Technische Universität München; Lehrstuhl für Technische Mikrobiologie; Freising Germany
| | - R.F. Vogel
- Technische Universität München; Lehrstuhl für Technische Mikrobiologie; Freising Germany
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Ricci A, Allende A, Bolton D, Chemaly M, Davies R, Girones R, Herman L, Koutsoumanis K, Lindqvist R, Nørrung B, Robertson L, Ru G, Sanaa M, Simmons M, Skandamis P, Snary E, Speybroeck N, Ter Kuile B, Threlfall J, Wahlström H, Cocconcelli PS, Klein G, Prieto Maradona M, Querol A, Peixe L, Suarez JE, Sundh I, Vlak JM, Aguilera-Gómez M, Barizzone F, Brozzi R, Correia S, Heng L, Istace F, Lythgo C, Fernández Escámez PS. Scientific Opinion on the update of the list of QPS-recommended biological agents intentionally added to food or feed as notified to EFSA. EFSA J 2017; 15:e04664. [PMID: 32625421 PMCID: PMC7010101 DOI: 10.2903/j.efsa.2017.4664] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
EFSA is requested to assess the safety of a broad range of biological agents in the context of notification for market authorisation as sources of food and feed additives, food enzymes and plant protection products. The qualified presumption of safety (QPS) assessment was developed to provide a harmonised generic pre-assessment to support safety risk assessments performed by EFSA's scientific Panels. The safety of unambiguously defined biological agents (at the highest taxonomic unit appropriate for the purpose for which an application is intended), and the completeness of the body of knowledge are assessed. Identified safety concerns for a taxonomic unit are, where possible and reasonable in number, reflected as 'qualifications' in connection with a recommendation for a QPS status. The list of QPS recommended biological agents was reviewed and updated in the current opinion and therefore becomes the valid list. The 2016 update reviews previously assessed microorganisms including bacteria, yeasts and viruses used for plant protection purposes following an Extensive Literature Search strategy. The taxonomic units related to the new notifications received since the 2013 QPS opinion, were periodically evaluated for a QPS status and the results published as Statements of the BIOHAZ Panel. Carnobacterium divergens, Lactobacillus diolivorans, Microbacterium imperiale, Pasteuria nishizawae, Pediococcus parvulus, Bacillus flexus, Bacillus smithii, Xanthomonas campestris and Candida cylindracea were recommended for the QPS list. All taxonomic units previously recommended for the 2013 QPS list had their status reconfirmed as well their qualifications with the exception of Pasteuria nishizawae for which the qualification was removed. The exclusion of filamentous fungi and enterococci from the QPS evaluations was reconsidered but monitoring will be maintained and the status will be re-evaluated in the next QPS Opinion update. Evaluation of bacteriophages should remain as a case-by-case procedure and should not be considered for QPS status.
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Lee SH, Ku HJ, Ahn MJ, Hong JS, Lee SH, Shin H, Lee KC, Lee JS, Ryu S, Jeon CO, Lee JH. Weissella jogaejeotgali sp. nov., isolated from jogae jeotgal, a traditional Korean fermented seafood. Int J Syst Evol Microbiol 2015; 65:4674-4681. [PMID: 26410078 DOI: 10.1099/ijsem.0.000631] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Strain FOL01T was isolated from traditionally fermented Korean jogae jeotgal (fermented clams). Phylogenetic sequence analysis of the 16S rRNA gene from FOL01T revealed that it is closely related to Weissella thailandensis FS61-1T and Weissella paramesenteroides ATCC 33313T with 99.39 % and 98.50 % 16S rRNA gene sequence similarities, respectively. API and VITEK analyses showed that strain FOL01T could be separated from its nearest phylogenetic relatives with respect to carbohydrate fermentation and antibiotic resistance. Subsequent amplified rRNA gene restriction analysis of 16S rRNA genes and HaeIII-restriction enzyme profiling of genomic DNAs revealed different band patterns. In addition, DNA-DNA hybridization of genomic DNAs showed 63.9 % relatedness. Analysis of the composition of cellular fatty acids confirmed that strain FOL01T differs from its close relatives and supports the proposal to assign this organism to a novel species of the genus Weissella. Based on these results, strain FOL01T could be classified as a novel species of the genus Weissella, for which the name Weissella jogaejeotgali sp. nov. is proposed. The type strain is FOL01T ( = KCCM 43128T = JCM 30589T).
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Affiliation(s)
- Se-Hui Lee
- Department of Food Science and Biotechnology, Graduate School of Biotechnology, Kyung Hee University, Yongin 446-701, South Korea
| | - Hye-Jin Ku
- Department of Food Science and Biotechnology, Graduate School of Biotechnology, Kyung Hee University, Yongin 446-701, South Korea
| | - Min-Ju Ahn
- Department of Food Science and Biotechnology, Graduate School of Biotechnology, Kyung Hee University, Yongin 446-701, South Korea
| | - Ji-Sang Hong
- Department of Food Science and Biotechnology, Graduate School of Biotechnology, Kyung Hee University, Yongin 446-701, South Korea
| | - Se Hee Lee
- School of Biological Sciences and Research Center for Biomolecules and Biosystems Chung-Ang University, Seoul 156-756, South Korea
| | - Hakdong Shin
- Department of Food and Animal Biotechnology, Center for Agricultural Biomaterials and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Keun Chul Lee
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, South Korea
| | - Jung-Sook Lee
- Korean Collection for Type Cultures, Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, South Korea
| | - Sangryeol Ryu
- Department of Food and Animal Biotechnology, Center for Agricultural Biomaterials and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Che Ok Jeon
- School of Biological Sciences and Research Center for Biomolecules and Biosystems Chung-Ang University, Seoul 156-756, South Korea
| | - Ju-Hoon Lee
- Department of Food Science and Biotechnology, Graduate School of Biotechnology, Kyung Hee University, Yongin 446-701, South Korea
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Statement on the update of the list of QPS‐recommended biological agents intentionally added to food or feed as notified to EFSA 1: Suitability of taxonomic units notified to EFSA until October 2014. EFSA J 2014. [DOI: 10.2903/j.efsa.2014.3938] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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Nisiotou A, Dourou D, Filippousi ME, Banilas G, Tassou C. Weissella uvarum sp. nov., isolated from wine grapes. Int J Syst Evol Microbiol 2014; 64:3885-3890. [PMID: 25180092 DOI: 10.1099/ijs.0.066209-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two bacterial strains (B18BM42(T) and B18NM6) were recovered during a study of bacterial diversity on wine grapes (Vitis vinifera L.) from the Nemea region in Greece. Phylogenetic analysis based on 16S rRNA gene sequences placed the two strains within the genus Weissella, and found them to be most closely related to Weissella minor NRIC 1625(T) followed by Weissella viridescens NRIC 1536(T) (99.1 and 98.9% sequence similarity, respectively). The level of DNA-DNA relatedness between strains B18NM42(T) and W. minor NRIC 1625(T) or W. viridescens NRIC 1536(T) was 31.9 and 35.0%, respectively. The two novel strains could be genetically differentiated from their closest relatives by REA-PFGE (restriction enzyme analysis-pulse field gel electrophoresis), RAPD (randomly amplified polymorphic DNA) and rep-PC R analyses (repetitive sequence-based PCR). Physiological examination showed that the novel strains can be distinguished from phylogenetically related species by their ability to grow at 42 °C and by certain carbohydrate fermentations. Based on the evidence above, the affiliation of the two strains to a novel species with the proposed name Weissella uvarum sp. nov. is suggested. The type strain is B18NM42(T) ( =DSM 28060(T) =NCCB 100484(T)).
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Affiliation(s)
- Aspasia Nisiotou
- Wine Institute of Athens, Hellenic Agricultural Organization 'DEMETER', Greece
| | - Dimitra Dourou
- Wine Institute of Athens, Hellenic Agricultural Organization 'DEMETER', Greece
| | | | - Georgios Banilas
- Department of Oenology and Beverage Technology, Technological Educational Institute of Athens, Greece
| | - Chrysoula Tassou
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organization 'DEMETER', Athens, Greece
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High genetic diversity among strains of the unindustrialized lactic acid bacterium Carnobacterium maltaromaticum in dairy products as revealed by multilocus sequence typing. Appl Environ Microbiol 2014; 80:3920-9. [PMID: 24747901 DOI: 10.1128/aem.00681-14] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Dairy products are colonized with three main classes of lactic acid bacteria (LAB): opportunistic bacteria, traditional starters, and industrial starters. Most of the population structure studies were previously performed with LAB species belonging to these three classes and give interesting knowledge about the population structure of LAB at the stage where they are already industrialized. However, these studies give little information about the population structure of LAB prior their use as an industrial starter. Carnobacterium maltaromaticum is a LAB colonizing diverse environments, including dairy products. Since this bacterium was discovered relatively recently, it is not yet commercialized as an industrial starter, which makes C. maltaromaticum an interesting model for the study of unindustrialized LAB population structure in dairy products. A multilocus sequence typing scheme based on an analysis of fragments of the genes dapE, ddlA, glpQ, ilvE, pyc, pyrE, and leuS was applied to a collection of 47 strains, including 28 strains isolated from dairy products. The scheme allowed detecting 36 sequence types with a discriminatory index of 0.98. The whole population was clustered in four deeply branched lineages, in which the dairy strains were spread. Moreover, the dairy strains could exhibit a high diversity within these lineages, leading to an overall dairy population with a diversity level as high as that of the nondairy population. These results are in agreement with the hypothesis according to which the industrialization of LAB leads to a diversity reduction in dairy products.
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Growth of Carnobacterium spp. from permafrost under low pressure, temperature, and anoxic atmosphere has implications for Earth microbes on Mars. Proc Natl Acad Sci U S A 2012; 110:666-71. [PMID: 23267097 DOI: 10.1073/pnas.1209793110] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The ability of terrestrial microorganisms to grow in the near-surface environment of Mars is of importance to the search for life and protection of that planet from forward contamination by human and robotic exploration. Because most water on present-day Mars is frozen in the regolith, permafrosts are considered to be terrestrial analogs of the martian subsurface environment. Six bacterial isolates were obtained from a permafrost borehole in northeastern Siberia capable of growth under conditions of low temperature (0 °C), low pressure (7 mbar), and a CO(2)-enriched anoxic atmosphere. By 16S ribosomal DNA analysis, all six permafrost isolates were identified as species of the genus Carnobacterium, most closely related to C. inhibens (five isolates) and C. viridans (one isolate). Quantitative growth assays demonstrated that the six permafrost isolates, as well as nine type species of Carnobacterium (C. alterfunditum, C. divergens, C. funditum, C. gallinarum, C. inhibens, C. maltaromaticum, C. mobile, C. pleistocenium, and C. viridans) were all capable of growth under cold, low-pressure, anoxic conditions, thus extending the low-pressure extreme at which life can function.
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Françoise L. Occurrence and role of lactic acid bacteria in seafood products. Food Microbiol 2010; 27:698-709. [DOI: 10.1016/j.fm.2010.05.016] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2009] [Revised: 05/12/2010] [Accepted: 05/17/2010] [Indexed: 10/19/2022]
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Millière J, Michel M, Mathieu F, Lefebvre G. Presence ofCarnobacteriumspp. in French surface mould-ripened soft-cheese. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1365-2672.1994.tb01626.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Manchester L, Toole A, Goodacre R. Characterization ofCarnobacteriumspecies by pyrolysis mass spectrometry. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1365-2672.1995.tb01678.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Björkroth J, Ristiniemi M, Vandamme P, Korkeala H. Enterococcus species dominating in fresh modified-atmosphere-packaged, marinated broiler legs are overgrown by Carnobacterium and Lactobacillus species during storage at 6 °C. Int J Food Microbiol 2005; 97:267-76. [PMID: 15582737 DOI: 10.1016/j.ijfoodmicro.2004.04.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2003] [Revised: 09/30/2003] [Accepted: 04/12/2004] [Indexed: 10/26/2022]
Abstract
In order to show which of the initial lactic acid bacteria (LAB) contaminants are also causing spoilage of a modified-atmosphere-packaged (MAP), marinated broiler leg product at 6 degrees C, LAB were enumerated and identified on the 2nd and 17th days following manufacture. A total of 8 fresh and 13 spoiled packages were studied for LAB levels. In addition, aerobic mesophilic bacteria and Enterobacteriaceae were determined. The average CFU/g values in the 8 fresh packages were 1.3 x 10(3), 9.8 x 10(3) and 2.6 x 10(2) on de Man Rogosa Sharpe agar (MRS), Plate Count Agar (PCA) and Violet Red Bile Glucose agar (VRBG), respectively. The commercial shelf life for the product had been set as 12 days, and all packages analyzed on the 17th day were deemed unfit for human consumption by sensory analysis. The corresponding CFU/g averages in the spoiled product were 1.4 x 10(9), 1.1 x 10(9) and 3.9 x 10(7) on MRS, PCA and VRBG agar, respectively. For characterization of LAB population, 104 colonies originating from the fresh packages and 144 colonies from the spoiled packages were randomly picked, cultured pure and identified to species level using a 16 and 23S rDNA HindIII RFLP (ribotyping) database. The results showed that enterococci (35.7% of the LAB population) were dominating in the fresh product, whereas carnobacteria (59.7%) dominated among the spoilage LAB. Enterococcus faecalis, Carnobacterium piscicola and Carnobacterium divergens were the main species detected. In general, when the initial LAB population is compared to the spoilage LAB, a shift from homofermentative cocci towards carnobacteria, Lactobacillus sakei/curvatus and heterofermentative rods is seen in this marinated product.
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Affiliation(s)
- Johanna Björkroth
- Department of Food and Environmental Hygiene, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 57, FIN-00014 Helsinki, Finland.
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Richard C, Drider D, Fliss I, Denery S, Prevost H. Generation and utilization of polyclonal antibodies to a synthetic C-terminal amino acid fragment of divercin V41, a class IIa bacteriocin. Appl Environ Microbiol 2004; 70:248-54. [PMID: 14711648 PMCID: PMC321246 DOI: 10.1128/aem.70.1.248-254.2004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2003] [Accepted: 10/08/2003] [Indexed: 11/20/2022] Open
Abstract
Polyclonal antibodies have been generated by immunization of rabbits with a chemically synthesized C-terminal part of divercin V41 (DvnCt) conjugated to the carrier protein keyhole limpet hemocyanin (KLH). The sensitivity and reactivity of the DvnCt-KLH-generated antibodies were evaluated by enzyme-linked immunosorbent assay (ELISA) using supernatant from cultures of 13 representative lactic acid bacterium strains, and specificity was confirmed by Western blot analysis. Anti-DvnCt-KLH antibodies were able to recognize not only divercin V41 but also enterocin P and piscicocin V1b, two other members of the class IIa bacteriocins. Production and activity of DvnV41 were evaluated by ELISA and activity tests during the growth of Carnobacterium divergens V41 in MRS medium containing or not containing Tween 80. Divercin V41, enterocin P, and piscicocin V1b were therefore purified by a single-step immunoaffinity chromatography method using a Sepharose matrix CNBr-activated directed binding of anti-DvnCt-KLH polyclonal antibodies.
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Affiliation(s)
- Christelle Richard
- Unité de Recherche sur la Qualité Microbiologique et Aromatique des Aliments (QM2A), ENITIAA, 44322 Nantes cedex 3, France
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18
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Mora D, Scarpellini M, Franzetti L, Colombo S, Galli A. Reclassification of Lactobacillus maltaromicus (Miller et al. 1974) DSM 20342(T) and DSM 20344 and Carnobacterium piscicola (Collins et al. 1987) DSM 20730(T) and DSM 20722 as Carnobacterium maltaromaticum comb. nov. Int J Syst Evol Microbiol 2003; 53:675-678. [PMID: 12807185 DOI: 10.1099/ijs.0.02405-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Phenotypic and genotypic characterizations of Lactobacillus maltaromicus strains DSM 20342(T) and DSM 20344 provided evidence for the reclassification of this species in the genus Carnobacterium. Moreover, phenotypic and genotypic comparisons made between L. maltaromicus and Carnobacterium piscicola highlighted that these two species should be considered synonyms. For these reasons, the species Carnobacterium maltaromaticum comb. nov. (type strain DSM 20342(T) = ATCC 27865(T) = CCUG 30142(T) = CIP 103135(T) = JCM 1154(T) = LMG 6903(T) = NRRL B-14852(T)) is proposed to accommodate L. maltaromicus and C. piscicola.
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Affiliation(s)
- Diego Mora
- Università degli Studi di Milano, Dipartimento di Scienze e Tecnologie Alimentari e Microbiologiche, Sezione Microbiologia Industriale, Milano, Italy
| | | | - Laura Franzetti
- Sezione Microbiologia Agraria Alimentare e Ecologica, Milano, Italy
| | - Silvia Colombo
- Sezione Microbiologia Agraria Alimentare e Ecologica, Milano, Italy
| | - Antonietta Galli
- Sezione Microbiologia Agraria Alimentare e Ecologica, Milano, Italy
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19
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Chapter 8 Culture media for lactic acid bacteria. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s0079-6352(03)80011-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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20
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Ringø E, Seppola M, Berg A, Olsen RE, Schillinger U, Holzapfel W. Characterization of Carnobacterium divergens strain 6251 isolated from intestine of Arctic charr (Salvelinus alpinus L.). Syst Appl Microbiol 2002; 25:120-9. [PMID: 12086178 DOI: 10.1078/0723-2020-00080] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
An atypical strain of Carnobacterium divergens, strain 6251, was isolated from the small intestine of Arctic charr (Salvelinus alpinus L.), fed high dietary carbohydrate. This strain showed marked growth inhibitory effects in vitro against the fish pathogens Aeromonas salmonicida subsp. salmonicida (furunculosis), Vibrio anguillarum (vibriosis) and Vibrio viscocus (winter ulcer). The strain is a non-motile Gram-positive psychrotrophic rod that lacks both catalase and oxidase, grows at pH 9.1 (CTAS agar), but not on acetate containing media (pH < or = 5.4), on TCBS or at < or =6% sodium chloride content. Strain 6251 is facultatively anaerobic and utilises tryptone as a sole source of nutrient. Further characterisation showed the most abundant cellular fatty acid of strain 6251 to be oleic acid (18:1) (n-9) (36.0%). Sequencing of a 16S rDNA region of 578 nucleotides and AFLP microbial fingerprinting suggested that strain 6251 is not closely related to any carnobacteria known, however, DNA-DNA similarity determinations showed high similarity (96.2%) with the type strain of Carnobacterium divergens. The unique phenotypic attributes of this strain represent new information on the biodiversity and ecology of carnobacteria and especially of the species C. divergens.
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Affiliation(s)
- Einar Ringø
- Department of Arctic Veterinary Medicine, The Norwegian School of Veterinary Science, Tromsø.
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21
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Connil N, Plissoneau L, Onno B, Pilet MF, Prévost H, Dousset X. Growth of Carnobacterium divergens V41 and production of biogenic amines and divercin V41 in sterile cold-smoked salmon extract at varying temperatures, NaCl levels, and glucose concentrations. J Food Prot 2002; 65:333-8. [PMID: 11848564 DOI: 10.4315/0362-028x-65.2.333] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A complete factorial design 2(3) was used to study some aspects of Carnobacterium divergens V41 metabolism (growth, biogenic amine production, and divercin V41 production) in sterile cold-smoked salmon extract (SSE) at varying temperatures (3 to 9 degrees C), NaCl levels (2.5 to 6.5%), and glucose concentrations (2 to 6 g liter(-1)). The results showed that temperature and NaCl content were the most influential factors on growth parameters in SSE. Predictive models are suggested for the assessment of C. divergens lag time (t(lag)) and maximum specific growth rate (micro(max)) Among the biogenic amines studied, only tyramine was found to be produced by C. divergens in SSE. Furthermore, we showed that temperature, NaCl, and glucose variations did not greatly affect tyramine and divercin V41 production by the bacteria under the experimental conditions used. Indeed, divercin V41, a bacteriocin from C. divergens V41 that is highly active against some Listeria strains, was produced in SSE even under harsh culture conditions. Similarly, tyramine production in SSE was delayed at 3 degrees C but reached 35 microg ml(-1) in all experiments after 27 days of storage. However, this final tyramine concentration in SSE is low compared with the threshold values of 100 to 800 microg g(-1) reported as the potentially toxic dose in foods. Thus, we have found that C. divergens V41 is a promising strain for the biopreservation of refrigerated cold-smoked salmon.
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Affiliation(s)
- Nathalie Connil
- Laboratoire de Microbiologie Alimentaire et Industrielle, ENITIAA, Nantes, France
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22
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23
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Yost CK, Nattress FM. The use of multiplex PCR reactions to characterize populations of lactic acid bacteria associated with meat spoilage. Lett Appl Microbiol 2000; 31:129-33. [PMID: 10972714 DOI: 10.1046/j.1365-2672.2000.00776.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A rapid, systematic and reliable approach for identifying lactic acid bacteria associated with meat was developed, allowing for detection of Carnobacterium spp., Lactobacillus curvatus, Lact. sakei and Leuconostoc spp. Polymerase chain reaction primers specific for Carnobacterium and Leuconostoc were created from 16S rRNA oligonucleotide probes and used in combination with species-specific primers for the 16S/23S rRNA spacer region of Lact. curvatus and Lact. sakei in multiplex PCR reactions. The method was used successfully to characterize lactic acid bacteria isolated from a vacuum-packaged pork loin stored at 2 degrees C. Seventy isolates were selected for identification and 52 were determined to be Lact. sakei, while the remaining 18 isolates were identified as Leuconostoc spp.
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Affiliation(s)
- C K Yost
- Agriculture and Agri-Food Canada, Lacombe Research Centre, Alberta, Canada.
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24
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Lai S, Shojaei H, Manchester LN. The differentiation of Carnobacterium divergens using the random amplification of polymorphic DNA polymerase chain reaction technique. Lett Appl Microbiol 2000; 30:448-52. [PMID: 10849274 DOI: 10.1046/j.1472-765x.2000.00745.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The potential of the randomly amplified polymorphic DNA polymerase chain reaction (RAPD-PCR) technique to differentiate Carnobacterium divergens from other members of the genus Carnobacterium was examined. A numerical analysis of the genomic profiles obtained demonstrated that it was possible to differentiate the C. divergens strains from other Carnobacterium strains using this technique. The heterogeneity observed in the representatives of the species C. piscicola adds further weight to the suggestion in other taxonomic studies that subspecies of this species exist.
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Affiliation(s)
- S Lai
- Institute of Biological Sciences, University of Wales, Aberystwyth and Department of Agricultural and Environmental Science, University of Newcastle upon Tyne, Newcastle upon Tyne, UK
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25
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Leroi F, Joffraud JJ, Chevalier F, Cardinal M. Study of the microbial ecology of cold-smoked salmon during storage at 8 degrees C. Int J Food Microbiol 1998; 39:111-21. [PMID: 9562883 DOI: 10.1016/s0168-1605(97)00126-8] [Citation(s) in RCA: 159] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Microbiological, chemical and sensory changes in cold-smoked salmon were studied during 5 weeks of vacuum storage at 8 degrees C. The aerobic 20 degrees C viable count reached its maximum level after 6 days (3 x 10(6) cfu g-1) however, the shelf-life of the product was estimated to be 2 or 3 weeks by the panellists, confirming that there is no correlation between those two factors. Acid, pungent, sour and rancid odours and flavours and pasty texture were the main spoilage characteristics. Trimethylamine did not play a major role in the spoilage mechanisms as only small amounts were produced. Two-hundred and seventy strains were collected over the storage period, purified and characterized. During the first 2 weeks, Gram-negative bacteria were dominant, mainly represented by S. putrefaciens immediately after the smoking process and then P. phosphoreum. Aeromonas spp. were present throughout the storage but in smaller amounts. Gram-negative bacteria then progressively decreased while Gram-positive bacteria, dominated by lactic acid bacteria (LAB), became by far the most common variety found. Carnobacterium piscicola was widely represented (97/155 LAB isolates). A diversification was observed at the end of the storage, with the appearance of L. farciminis, L. sake and L. alimentarius. Occurrence of yeasts and moulds was quite rare. Spoilage potential of the strains was tested on a sterile smoked salmon extract juice. Shewanella putrefaciens, Aeromonas spp. and Brachothrix spp. produced strong off-odours while most of the LAB and P. phosphoreum seemed not to be involved in spoilage.
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Affiliation(s)
- F Leroi
- Laboratoire de Génie Alimentaire, Ifremer, Nantes, France.
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26
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Abstract
Application of molecular genetic techniques to determine the relatedness of food-associated lactic acid bacteria has resulted in significant changes in their taxonomic classification. During the 1980s the genus Streptococcus was separated into the three genera Enterococcus, Lactococcus and Streptococcus. The lactic acid bacteria associated with foods now include species of the genera Carnobacterium, Enterococcus, Lactobacillus, Lactococcus, Leuconostoc, Oenococcus, Pediococcus, Streptococcus, Tetragenococcus, Vagococcus and Weissella. The genus Lactobacillus remains heterogeneous with over 60 species (ymol% G+C content ranging from 33 to 55), of which about one-third are strictly heterofermentative. However, many changes have been made and reorganization of the genus along lines that do not follow previous morphological or phenotypic differentiation from Leuconostoc and Pediococcus is being studied. Phylogenetically belonging to the Actinomyces branch of the bacteria, Lactobacillus bifidus has been moved to the genus Bifidobacterium also on account of its greater than 50 mol% G+C content. It is therefore no longer considered one of the lactic acid bacteria senso strictu, which form part of the Clostridium branch of the bacteria. The new genus Weissella has been established to include one member of the genus Leuconostoc (Leuc, paramesenteroides) and heterofermentative lactobacilli with unusual interpeptide bridges in the peptidoglycan. Contrary to the clear-cut division of the streptococci, morphological and physiological features of Weissella do not directly support this grouping which now incorporates species that produce D(-)- as well as DL-lactate. The new genus Carnobacterium is morphologically similar to the lactobacilli, but it shares some physiological similarities (e.g. growth at pH 9.5) and a common phylogenetic branch with the genus Enterococcus. The review includes information on the taxonomic changes and the relationship of the bacteria of food fermentation and spoilage.
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Affiliation(s)
- M E Stiles
- Department of Food Science and Nutrition, University of Alberta, Edmonton, Canada
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27
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Dicks LMT, Janssen B, Dellaglio F. Differentiation of Carnobacterium divergens and Carnobacterium piscicola by numerical analysis of total soluble cell protein patterns and DNA-DNA hybridizations. Curr Microbiol 1995. [DOI: 10.1007/bf00294279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Mathieu F, Michel M, Lebrihi A, Lefebvre G. Effect of the bacteriocin carnocin CP5 and of the producing strain Carnobacterium piscicola CP5 on the viability of Listeria monocytogenes ATCC 15313 in salt solution, broth and skimmed milk, at various incubation temperatures. Int J Food Microbiol 1994; 22:155-72. [PMID: 8074969 DOI: 10.1016/0168-1605(94)90139-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Carnobacterium piscicola CP5, isolated from French mould-ripened soft-cheese, produced a bacteriocin named carnocin CP5 in a wide range of incubation temperatures, from 4 degrees C to 30 degrees C. The ability of a crude bacteriocin, of a partially-purified form, and of the producer strain to inhibit growth of Listeria monocytogenes ATCC 15313 was examined in salt solution, broth and skimmed milk between 4 degrees C and 30 degrees C. When carnocin CP5 was added to a L. monocytogenes ATCC 15313 culture, an adsorption on cells and a bactericidal effect with a cell lysis occurred. At 30 degrees C, with carnocin CP5 or with C. piscicola CP5, a transitory bactericidal effect was observed. Subsequent experiments at 4 degrees C, 7 degrees C or 15 degrees C, showed a more prolonged bactericidal effect. Thus at 7 degrees C, partially-purified carnocin CP5 reduced an initial population level of L. monocytogenes of 10(3) cfu/ml to non-detectable level within 7 days. However, in some cases, with extended incubation, the carnocin CP5 effect was no longer visible, the L. monocytogenes population grew again. This phenomenon was probably due to the presence of a sub-population of bacteriocin-resistant variants.
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Affiliation(s)
- F Mathieu
- Laboratoire de Microbiologie Industrielle et Alimentaire, ENSAIA-INPL, Vandoeuvre les Nancy, France
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29
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Dykes GA, Britz TJ, von Holy A. Numerical taxonomy and identification of lactic acid bacteria from spoiled, vacuum-packaged vienna sausages. THE JOURNAL OF APPLIED BACTERIOLOGY 1994; 76:246-52. [PMID: 8157544 DOI: 10.1111/j.1365-2672.1994.tb01623.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Sixty-one lactic acid bacteria from spoiled vacuum-packaged vienna sausages and 15 reference strains were tested for 72 phenotypic characteristics. An identification key and a computer data base, both specific for lactic acid bacteria from meat sources, were used for identification and the results were compared. There was a high correlation (86.9%) between the two procedures in the identification of strains to genus level. However, only a 54.8% correlation was obtained in identifying strains to the species level. With numerical taxonomy (Ssm matching coefficient with average linkage clustering) 60 strains were recovered in six clusters at the 89% similarity level. While most Leuconostoc strains clustered separately from the Lactobacillus strains, the identity of many leuconostocs was not clarified. The presence of a heterogeneous cluster containing typical and 'atypical' strains of the Lactobacillus saké/curvatus group and a separate homogeneous Lact. curvatus cluster was noted. Closer examination of the data suggested that the 'atypical' lactobacilli were all strains of Lact. saké.
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Affiliation(s)
- G A Dykes
- Department of Microbiology, University of the Witwatersrand, Johannesburg, South Africa
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31
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Zúñiga M, Pardo I, Ferrer S. An improved medium for distinguishing between homofermentative and heterofermentative lactic acid bacteria. Int J Food Microbiol 1993; 18:37-42. [PMID: 8466811 DOI: 10.1016/0168-1605(93)90005-2] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
An improved solid medium for differentiating between homofermentative and heterofermentative lactic acid bacteria is proposed. It was developed to support the growth of wine strains unable to grow in other media. However, it can be employed as a general medium for the lactic acid bacteria that utilize fructose.
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Affiliation(s)
- M Zúñiga
- Departament de Microbiologia, Facultat de Ciències Biològiques, Universitat de València, Spain
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32
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Dainty RH, Mackey BM. The relationship between the phenotypic properties of bacteria from chill-stored meat and spoilage processes. SOCIETY FOR APPLIED BACTERIOLOGY SYMPOSIUM SERIES 1992; 21:103S-14S. [PMID: 1502596 DOI: 10.1111/j.1365-2672.1992.tb03630.x] [Citation(s) in RCA: 231] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- R H Dainty
- MATFORSK, Norwegian Food Research Institute, As, Norway
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33
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Stoffels G, Nes IF, Guthmundsdóttir A. Isolation and properties of a bacteriocin-producing Carnobacterium piscicola isolated from fish. THE JOURNAL OF APPLIED BACTERIOLOGY 1992; 73:309-16. [PMID: 1429307 DOI: 10.1111/j.1365-2672.1992.tb04982.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A facultative psychrotrophic lactic acid bacterium isolated from fresh fish was identified as Carnobacterium piscicola on the basis of carbohydrate utilization, G + C content and 16S RNA analysis. Its bacteriocin, designated carnocin UI49, is produced during the mid-exponential phase of growth at temperatures between 15 degrees C and 34 degrees C. Carnocin UI49 is active against a large number of closely-related lactic acid bacteria including carnobacteria, lactobacilli, pediococci and lactococci. Furthermore, the bacteriocin has a bactericidic mode of action which results in lysis of sensitive cells. Maximum bactericidal activity is observed at 34 degrees C with a decrease in activity down to 15 degrees C where it is completely abolished.
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Affiliation(s)
- G Stoffels
- University of Iceland, Science Institute, Reykjavík
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Abstract
The spoilage association especially of protein-rich foods can be dominated by Gram-positive bacteria, notably lactic acid bacteria (LAB) which affect vacuum packaged refrigerated processed meats and some dairy products. New food ecosystems are being created by novel packaging and processing technologies, resulting in spoilage associations differing from those previously reported. In addition, improvement in identification methods, allow the detection and isolation of 'novel' bacterial groups, e.g., Carnobacterium spp. This review considers the genera Aerococcus, Brevibacterium, Brochothrix, Carnobacterium, Kurthia, Lactobacillus, Leuconostoc, Microbacterium, Micrococcus, Pediococcus and Propionibacterium. Strictly selective procedures, including incubation temperature and atmosphere, are not yet available for the genera Aerococcus, Brevibacterium, Microbacterium and Micrococcus, and only with some limitations for Kurthia and Propionibacterium. On the other hand, a causative role in food spoilage has not been established clearly for all those groups, some of which may be 'opportunistic' in their behaviour. The LAB groups Lactobacillus, Leuconostoc and Pediococcus ('LLP-Group') often share similar habitats and show similar physiological behaviour on a number of elective and selective media. Modifications to increase selectivity have been based mainly on de Man, Rogosa and Sharpe (MRS) or Rogosa agar, and include pH reduction, supplementation with chemical preservatives (e.g., sorbic acid and nitrate) and the use of reduced atmospheres or suboptimal incubation temperatures. Carnobacteria differ from other LAB in their non-aciduric nature, and selective plating procedures use high-pH media (pH 8-9) by which competitors (mainly lactobacilli) are eliminated.
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Affiliation(s)
- W H Holzapfel
- Institute of Hygiene and Toxicology, Federal Research Centre for Nutrition, Karlsruhe, Germany
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35
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Brooks JL, Moore AS, Patchett RA, Collins MD, Kroll RG. Use of the polymerase chain reaction and oligonucleotide probes for the rapid detection and identification of Carnobacterium species from meat. THE JOURNAL OF APPLIED BACTERIOLOGY 1992; 72:294-301. [PMID: 1381346 DOI: 10.1111/j.1365-2672.1992.tb01838.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The polymerase chain reaction (PCR) was used selectively to amplify specific rDNA sequences of Carnobacterium divergens, C. mobile, C. piscicola and C. gallinarum in purified DNA extracts, crude cell lysates and food samples. The PCR products were visualized by agarose gel electrophoresis and identified, at species level, by hybridization reactions with three specific oligonucleotide probes for C. divergens, C. mobile and C. piscicola/C. gallinarum designed from 16S rRNA sequence data. The PCR was sufficiently sensitive to amplify DNA from a single bacterium to detectable levels after 30 cycles of amplification. Both radioactive (32P) and non-radioactive alkaline phosphatase labelled probes was able to detect the PCR products. Detection was highly specific and the probes did not hybridize with DNA samples from any other of the bacterial species tested. These methods enabled the rapid and specific detection and identification of carnobacteria from pure cultures and samples of meat.
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Affiliation(s)
- J L Brooks
- AFRC Institute of Food Research, Reading Laboratory, Shinfield, UK
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36
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Montel MC, Talon R, Fournaud J, Champomier MC. A simplified key for identifying homofermentative Lactobacillus and Carnobacterium spp. from meat. THE JOURNAL OF APPLIED BACTERIOLOGY 1991; 70:469-72. [PMID: 1938670 DOI: 10.1111/j.1365-2672.1991.tb02742.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Species of Lactobacillus and Carnobacterium from meat and meat products could be separated by a few biochemical characteristics; presence of meso-diaminopimelic acid in the cell wall, the isomers of lactic acid produced, production of citrulline from arginine and fermentation of some carbohydrates. This identification key was checked by DNA-DNA hybridizations studies.
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Affiliation(s)
- M C Montel
- Station de Recherches sur la Viande, Institut National de la Recherche Agronomique, Theix, Saint-Genès-Champanelle, France
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37
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Ahn C, Stiles ME. Antibacterial activity of lactic acid bacteria isolated from vacuum-packaged meats. THE JOURNAL OF APPLIED BACTERIOLOGY 1990; 69:302-10. [PMID: 2123171 DOI: 10.1111/j.1365-2672.1990.tb01520.x] [Citation(s) in RCA: 89] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Lactic acid bacteria isolated from vacuum-packaged fresh meat stored at 4 degrees C were shown to produce antagonistic substances active against closely related bacteria. Growth medium, pH and growth temperature all affected the production of the inhibitory substances. Ten strains including aciduric Lactobacillus-type organisms, Carnobacterium spp. and Leuconostoc spp. were selected that produced protein-aceous substances that caused inhibition of indicator strains. These were considered to be bacteriocins or bacteriocin-like compounds based on their inactivation with protease, generally narrow spectra of antibacterial activity and bactericidal or bacteriostatic modes of action. Activity was not lost from supernatant fluids as a result of heat treatment at 62 degrees C for 30 min, except for the Leuconostoc strains. Inhibitory spectra of some strains included Enterococcus spp. and Listeria monocytogenes. Some strains were of interest because their inhibitory substances were detected in the supernatant fluid early in the growth cycle. The inhibitory substances differed in characteristics between strains and there is evidence that more than one bacteriocin-like substance may be produced by some strains.
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Affiliation(s)
- C Ahn
- Department of Food Science, University of Alberta, Edmonton, Canada
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39
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Kleynmans U, Heinzl H, Hammes WP. Lactobacillus suebicus sp. nov., an Obligately Heterofermentative Lactobacillus Species Isolated from Fruit Mashes. Syst Appl Microbiol 1989. [DOI: 10.1016/s0723-2020(89)80024-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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40
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Döring B, Ehrhardt S, Lücke FK, Schillinger U. Computer-Assisted Identification of Lactic Acid Bacteria from Meats. Syst Appl Microbiol 1988. [DOI: 10.1016/s0723-2020(88)80050-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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Borch E, Molin G. Numerical taxonomy of psychrotrophic lactic acid bacteria from prepacked meat and meat products. Antonie Van Leeuwenhoek 1988; 54:301-23. [PMID: 3178187 DOI: 10.1007/bf00393522] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Ninety-four strains of lactic acid bacteria isolated from refrigerated, prepacked meat and meat products were together with 59 reference strains of Brochothrix, Lactobacillus, Leuconostoc, Pediococcus and Streptococcus phenotypically classified, using 96 unit characters. Data were examined using Simple Matching (SSM) or Jaccard coefficient (SJ), and unweighted pair group algorithm with arithmetic averages. Twenty-three clusters with two or more members were defined at the 84% SSM-similarity level which corresponded to the SJ-similarity level of 61%. Based on SSM, most field strains were included in nine clusters, and with three unsignificant exceptions these contained no reference strains. The field clusters were designated Carnobacterium piscicola (cluster 1; 5% of field isolates), Carnobacterium divergens (cluster 2; 9% of field isolates), Leuconostoc (cluster 9; 18% of field isolates) and Lactobacillus (cluster 4, 10, 11, 12, 13 and 14; together 60% of field isolates). The Lactobacillus clusters had many features in common with cluster II of Shaw & Harding (1984). Phenotypical characteristics of major clusters are given. The SSM and SJ based classifications basically coincided for the field strains; the exception was cluster 4 which now were split in two parts. Fourteen clusters were made up of mainly reference strains (SSM). Most of them included more than one type strain on species level; exceptions were Brochothrix thermosphacta (cluster 3), Lactobacillus salivarius (cluster 17) and Leuconostoc mesenteroides (cluster 18). Several rearrangements were seen amongst the clusters of the reference strains when SJ, instead of SSM, was used for clustering.
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Affiliation(s)
- E Borch
- Swedish Meat Research Institute, Kävlinge, Sweden
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Champomier MC, Montel MC, Grimont F, Grimont PA. Genomic identification of meat Lactobacilli as Lactobacillus sake. ANNALES DE L'INSTITUT PASTEUR. MICROBIOLOGY 1987; 138:751-8. [PMID: 3454218 DOI: 10.1016/0769-2609(87)90153-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Eighty-four strains of homofermentative lactobacilli isolated from meat showed a great diversity in carbohydrate fermentation patterns. DNA-DNA hybridization (S1 nuclease method) showed 13 representative strains to constitute a homogeneous genomic group 65 to 82% related to Lactobacillus sake ATCC 15521, with delta Tm values below 1.5 degree C. The description of L. sake is emended.
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Affiliation(s)
- M C Champomier
- Station de Recherches sur la Viande, Institut National de la Recherche Agronomique, Ceyrat, France
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Atypical Lactobacilli from Vacuum-Packaged Meats: Comparison by DNA Hybridization, Cell Composition and Biochemical Tests with a Description of Lactobacillus carnis sp. nov. Syst Appl Microbiol 1985. [DOI: 10.1016/s0723-2020(85)80034-5] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Radmore K, Holzapfel W, Steyn P. Physiology of a pentose-utilizing thermophilicLactobacillus. FEMS Microbiol Lett 1984. [DOI: 10.1111/j.1574-6968.1984.tb01061.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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