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Assohoun-Djeni N, Djeni N, Messaoudi S, Lhomme E, Koussemon-Camara M, Ouassa T, Chobert JM, Onno B, Dousset X. Biodiversity, dynamics and antimicrobial activity of lactic acid bacteria involved in the fermentation of maize flour for doklu production in Côte d'Ivoire. Food Control 2016. [DOI: 10.1016/j.foodcont.2015.09.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Moncheva P, Chipeva V, Kujumdzieva A, Ivanova I, Dousset X, Gocheva B. The Composition of the Microflora of Boza, an Original Bulgarian Beverage. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2003.10819214] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Kabadjova P, Gotcheva I, Ivanova I, Dousset X. Investigation of Bacteriocin Activity of Lactic Acid Bacteria Isolated from Boza. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2000.10819063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Todorov S, Gotcheva B, Dousset X, Onno B, Ivanova I. Influence of Growth Medium on Bacteriocin Production inLactobacillus PlantarumST31. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2000.10819062] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Atanassova M, Dousset X, Montcheva P, Ivanova I, Haertle T. Microbiological Study of Kefir Grains. Isolation and Identification of High Activity Bacteriocin Producing Strains. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.1999.10819019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Messaoudi S, Manai M, Kergourlay G, Prévost H, Connil N, Chobert JM, Dousset X. Lactobacillus salivarius: Bacteriocin and probiotic activity. Food Microbiol 2013; 36:296-304. [DOI: 10.1016/j.fm.2013.05.010] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 05/22/2013] [Accepted: 05/28/2013] [Indexed: 01/18/2023]
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Messaoudi S, Madi A, Prévost H, Feuilloley M, Manai M, Dousset X, Connil N. In vitro evaluation of the probiotic potential of Lactobacillus salivarius SMXD51. Anaerobe 2012; 18:584-9. [DOI: 10.1016/j.anaerobe.2012.10.004] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 10/13/2012] [Accepted: 10/23/2012] [Indexed: 12/31/2022]
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Jaffrès E, Sohier D, Leroi F, Pilet M, Prévost H, Joffraud J, Dousset X. Study of the bacterial ecosystem in tropical cooked and peeled shrimps using a polyphasic approach. Int J Food Microbiol 2009; 131:20-9. [DOI: 10.1016/j.ijfoodmicro.2008.05.017] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Revised: 04/25/2008] [Accepted: 05/15/2008] [Indexed: 10/22/2022]
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Rihakova J, Belguesmia Y, Petit V, Pilet M, Prévost H, Dousset X, Drider D. Divercin V41 from gene characterization to food applications: 1998-2008, a decade of solved and unsolved questions. Lett Appl Microbiol 2009; 48:1-7. [DOI: 10.1111/j.1472-765x.2008.02490.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Guilbaud M, Chafsey I, Pilet MF, Leroi F, Prévost H, Hébraud M, Dousset X. Response of Listeria monocytogenes to liquid smoke. J Appl Microbiol 2008; 104:1744-53. [DOI: 10.1111/j.1365-2672.2008.03731.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ferchichi M, Valcheva R, Prévost H, Onno B, Dousset X. A one-step reaction for the rapid identification of Lactobacillus mindensis, Lactobacillus panis, Lactobacillus paralimentarius, Lactobacillus pontis and Lactobacillus frumenti using oligonucleotide primers designed from the 16S-23S rRNA intergenic sequences. J Appl Microbiol 2008; 104:1797-807. [PMID: 18217935 DOI: 10.1111/j.1365-2672.2007.03712.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AIMS Species-specific primers targeting the 16S-23S ribosomal DNA (rDNA) intergenic spacer region (ISR) were designed to rapidly discriminate between Lactobacillus mindensis, Lactobacillus panis, Lactobacillus paralimentarius, Lactobacillus pontis and Lactobacillus frumenti species recently isolated from French sourdough. METHODS AND RESULTS The 16S-23S ISRs were amplified using primers 16S/p2 and 23S/p7, which anneal to positions 1388-1406 of the 16S rRNA gene and to positions 207-189 of the 23S rRNA gene respectively, Escherichia coli numbering (GenBank accession number V00331). Clone libraries of the resulting amplicons were constructed using a pCR2.1 TA cloning kit and sequenced. Species-specific primers were designed based on the sequences obtained and were used to amplify the 16S-23S ISR in the Lactobacillus species considered. For all of them, two PCR amplicons, designated as small ISR (S-ISR) and large ISR (L-ISR), were obtained. The L-ISR is composed of the corresponding S-ISR, interrupted by a sequence containing tRNA(Ile) and tRNA(Ala) genes. Based on these sequences, species-specific primers were designed and proved to identify accurately the species considered among 30 reference Lactobacillus species tested. CONCLUSIONS Designed species-specific primers enable a rapid and accurate identification of L. mindensis, L. paralimentarius, L. panis, L. pontis and L. frumenti species among other lactobacilli. SIGNIFICANCE AND IMPACT OF THE STUDY The proposed method provides a powerful and convenient means of rapidly identifying some sourdough lactobacilli, which could be of help in large starter culture surveys.
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Affiliation(s)
- M Ferchichi
- UMR INRA-1014 SECALIM, ENITIAA, Rue de la Géraudière, Nantes Cedex, France.
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Batdorj B, Trinetta V, Dalgalarrondo M, Prévost H, Dousset X, Ivanova I, Haertlé T, Chobert JM. Isolation, taxonomic identification and hydrogen peroxide production by Lactobacillus delbrueckii subsp. lactis T31, isolated from Mongolian yoghurt: inhibitory activity on food-borne pathogens. J Appl Microbiol 2007; 103:584-93. [PMID: 17714391 DOI: 10.1111/j.1365-2672.2007.03279.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS The aim of this work was to isolate lactic acid bacteria (LAB) strains from Mongolian tarag (a traditionally homemade yoghurt) displaying antimicrobial activities against food-borne pathogens, identify inhibitory substances and study the kinetics of their production. METHODS AND RESULTS Inhibitory substance-producing bacterial strains were isolated from tarag. From 300 bacterial clones, 31 were able to inhibit the growth of the indicator strain Lactobacillus bulgaricus 340. One of the most active strains was identified as Lactobacillus delbrueckii subsp. lactis strain T31 by using cluster analysis of amplified fragment length polymorphism (AFLP) DNA fingerprints. The antimicrobial substance was inactivated by catalase, demonstrating the production of hydrogen peroxide (H(2)O(2)). Production of H(2)O(2) was studied under aerated and nonaerated culture conditions. The amount of H(2)O(2) in the culture supernatant increased during bacterial growth and reached a maximum (5.12 mmol l(-1)) at the early stationary phase under aerated conditions (agitated cultures). H(2)O(2) was not detected in the culture performed without agitation. In mixed cultures performed in milk with either Lact. delbrueckii subsp. lactis T31 in the presence of Escherichia coli, or Lact. delbrueckii subsp. lactis T31 in the presence of Listeria innocua under aerated and nonaerated conditions, a significant decrease in pathogen count was observed in aerated cultures. SIGNIFICANCE AND IMPACT OF THE STUDY The significant decrease in Listeria viability observed in aerated mixed cultures of Lact. delbrueckii subsp. lactis T31 is mainly because of H(2)O(2) production. Lactobacillus delbrueckii subsp. lactis T31 could be used as a protective culture in food industries or as a probiotic to prevent intestinal and urogenital infections.
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Affiliation(s)
- B Batdorj
- INRA, Unité de Recherche Biopolymères, Interactions, Assemblages, Fonctions et Interactions des Protéines Laitières (BIA-FIPL), rue de la Géraudière, Nantes Cedex 3, France
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Valcheva R, Kabadjova P, Rachman C, Ivanova I, Onno B, Prévost H, Dousset X. A rapid PCR procedure for the specific identification of Lactobacillus sanfranciscensis, based on the 16S-23S intergenic spacer regions. J Appl Microbiol 2007; 102:290-302. [PMID: 17184346 DOI: 10.1111/j.1365-2672.2006.03039.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIMS The organization of ribosomal RNA (rrn) operons in Lactobacillus sanfranciscensis was studied in order to establish an easy-to-perform method for identification of L. sanfranciscensis strains, based on the length and sequence polymorphism of the 16S-23S rDNA intergenic spacer region (ISR). METHODS AND RESULTS PCR amplification of the 16S-23S rDNA ISRs of L. sanfranciscensis gave three products distinguishing this micro-organism from the remaining Lactobacillus species. Sequence analysis revealed that two of the rrn operons were organized as in previously reported lactobacilli: large spacer (L-ISR), containing tRNA(Ile) and tRNA(Ala) genes; small spacer (S-ISR) without tRNA genes. The third described spacer (medium, M-ISR), original for L. sanfranciscensis, harboured a tRNA-like structure. An oligonucleotide sequence targeting the variable region between tDNA(Ile) and tDNA(Ala) of L. sanfranciscensis L-ISR was approved to be suitable in species-specific identification procedure. Analysis by pulse-field gel electrophoresis of the chromosomal digest with the enzyme I-CeuI showed the presence of seven rrn clusters. Lactobacillus sanfranciscensis genome size was estimated at c. 1.3 Mb. CONCLUSIONS Direct amplification of 16S-23S ISRs or PCR with specific primer derived from L-ISR showed to be useful for specific typing of L. sanfranciscensis. This was due to the specific rrn operon organization of L. sanfranciscensis strains. SIGNIFICANCE AND IMPACT OF THE STUDY In this paper, we have reported a rapid procedure for L. sanfranciscensis identification based on specific structures found in its rrn operon.
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Affiliation(s)
- R Valcheva
- Laboratoire de Microbiologie Alimentaire et Industrielle, QM2A, ENITIAA, Nantes Cedex 3, France.
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Batdorj B, Trinetta V, Dalgalarrondo M, Prévost H, Dousset X, Ivanova I, Haertlé T, Chobert JM. Isolation, taxonomic identification and hydrogen peroxide production by Lactobacillus delbrueckii subsp. lactis T31, isolated from Mongolian yoghurt: inhibitory activity on food-borne pathogens. J Appl Microbiol 2007. [DOI: 10.1111/j.1365-2672.2006.03279.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kabadjova-Hristova P, Atanasova I, Dousset X, Moncheva P. Multiplex PCR Assay for Identification of Erwinia Amylovora- The Causative Agent of Fire Blight. BIOTECHNOL BIOTEC EQ 2006. [DOI: 10.1080/13102818.2006.10817375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Abstract
AIMS To establish a rapid and reliable multiplex PCR (mPCR)-based method allowing specific identification of Carnobacterium piscicola SF668 during storage of cold smoked salmon (CSS). METHODS AND RESULTS CSS was inoculated with C. piscicola SF668 and stored at 4 degrees C. Samples were withdrawn at regular time intervals and analysed by counting the number of viable cells. About 25-100% of colonies grown on Elliker plates were subjected to mPCR amplification. The results show that strains presumably identified as C. piscicola SF668 were predominant over the test period. CONCLUSIONS mPCR is a powerful tool to study competitiveness of C. piscicola SF668, which inhibits the growth of Listeria monocytogenes. SIGNIFICANCE AND IMPACT OF THE STUDY The present study demonstrates the importance of molecular methods in studying competitiveness of strains with potential food applications.
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Affiliation(s)
- E Pellé
- Laboratoire de Microbiologie Alimentaire et Industrielle, ENITIAA, Nantes, France
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Lebois M, Connil N, Onno B, Prévost H, Dousset X. Effects of divercin V41 combined to NaCl content, phenol (liquid smoke) concentration and pH on Listeria monocytogenes ScottA growth in BHI broth by an experimental design approach. J Appl Microbiol 2004; 96:931-7. [PMID: 15078508 DOI: 10.1111/j.1365-2672.2004.02221.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIMS To investigate the main effects and interactions of different factors : divercin V41 (0-4 ng ml(-1)), NaCl content (0.5-5.5% w v(-1)), phenol (liquid smoke) concentration (0-8 ppm), and pH (5.5-7.5) on Listeria monocytogenes ScottA growth. METHODS AND RESULTS Experiments were carried out in BHI broth using a central composite design. Divercin V41 (div41), NaCl content and pH were found to be the most influential factors whereas phenol concentration in liquid smoke had no effect on L. monocytogenes ScottA growth in our experimental domain. The combined effects of div41, NaCl content and pH decreased L. monocytogenes ScottA maximum specific growth rate (mu(max)) from 0.34 to 0.01 h(-1) and led to a significant increase in lag time (t(lag)) from 5.5 to 25 h. CONCLUSION In this study, NaCl, pH and phenol conditions were similar to those currently observed in smoked salmon production. This shows that L. monocytogenes ScottA growth could be efficiently delayed by the use of div41 in addition to the usual technological hurdles. SIGNIFICANCE AND IMPACT OF THE STUDY In conclusion, the technological hurdles of cold smoked salmon production could be further optimized and combined with the use of div41 or the div41 producer strain to improve the food safety of the product.
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Affiliation(s)
- M Lebois
- Laboratoire de Microbiologie Alimentaire et Industrielle, ENITIAA, rue de la Géraudière, BP 82225, 44322 Nantes 03, France
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Rachman CN, Kabadjova P, Prévost H, Dousset X. Identification of Lactobacillus alimentarius and Lactobacillus farciminis with 16S-23S rDNA intergenic spacer region polymorphism and PCR amplification using species-specific oligonucleotide. J Appl Microbiol 2004; 95:1207-16. [PMID: 14632993 DOI: 10.1046/j.1365-2672.2003.02117.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS The restriction fragment length polymorphism (RFLP) method was used to differentiate Lactobacillus species having closely related identities in the 16S-23S rDNA intergenic spacer region (ISR). Species-specific primers for Lact. farciminis and Lact. alimentarius were designed and allowed rapid identification of these species. METHODS AND RESULTS The 16S-23S rDNA spacer region was amplified by primers tAla and 23S/p10, then digested by HinfI and TaqI enzymes and analysed by electrophoresis. Digestion by HinfI was not sufficient to differentiate Lact. sakei, Lact. curvatus, Lact. farciminis, Lact. alimentarius, Lact. plantarum and Lact. paraplantarum. In contrast, digestion carried out by TaqI revealed five different patterns allowing these species to be distinguished, except for Lact. plantarum from Lact. paraplantarum. The 16S-23S rDNA spacer region of Lact. farciminis and Lact. alimentarius were amplified and then cloned into vector pCR(R)2.1 and sequenced. The DNA sequences obtained were analysed and species-specific primers were designed from these sequences. The specificity of these primers was positively demonstrated as no response was obtained for 14 other species tested. RESULTS AND CONCLUSIONS The species-specific primers for Lact. farciminis and Lact. alimentarius were shown to be useful for identifying these species among other lactobacilli. The RFLP profile obtained upon digestion with HinfI and TaqI enzymes can be used to discriminate Lact. farciminis, Lact. alimentarius, Lact. sakei, Lact. curvatus and Lact. plantarum. SIGNIFICANCE AND IMPACT OF THE STUDY In this paper, we have established the first species-specific primer for PCR identification of Lact. farciminis and Lact. alimentarius. Both species-specific primer and RFLP, could be used as tools for rapid identification of lactobacilli up to species level.
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Affiliation(s)
- C N Rachman
- Unité de Recherche Qualité Microbiologique et Aromatique des Aliments, ENITIAA, rue de la Géraudière, BP 82225, 44322 Nantes Cedex 03, France
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Atanassova M, Choiset Y, Dalgalarrondo M, Chobert JM, Dousset X, Ivanova I, Haertlé T. Isolation and partial biochemical characterization of a proteinaceous anti-bacteria and anti-yeast compound produced by Lactobacillus paracasei subsp. paracasei strain M3. Int J Food Microbiol 2003; 87:63-73. [PMID: 12927708 DOI: 10.1016/s0168-1605(03)00054-0] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
New proteinaceous active substance produced by Lactobacillus paracasei subsp. paracasei strain M3 used as a starter for Bulgarian yellow cheese was identified and studied. It displayed bactericidal and fungistatic activities. Its activity was checked against over 60 bacterial and yeast strains. It was efficient against Bacillus subtilis ATCC 6633, several L. delbrueckii species, Helicobacter pylori NCIPD 230 and some yeast species, for example Candida albicans, C. pseudointermedia NBIMCC 1532, C. blankii NBIMCC 85 and Saccharomyces cerevisiae NBIMCC 1812. The synthesis of the substance by producing strain was detected in the late logarithmic growth phase during batch fermentation. Anion exchange chromatography, reversed phase chromatography (RPC) on C4 column and HPLC on C18 column were used for partial purification of this antimicrobial compound. The gene responsible for the synthesis of the active substance is located on the bacterial chromosome.
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Affiliation(s)
- M Atanassova
- Department of Microbiology, Faculty of Biology, University of Sofia, Blvd. Dragan Tzankov, No. 8, 1423 Sofia, Bulgaria
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Connil N, Prévost H, Dousset X. Production of biogenic amines and divercin V41 in cold smoked salmon inoculated with Carnobacterium divergens V41, and specific detection of this strain by multiplex-PCR. J Appl Microbiol 2002; 92:611-7. [PMID: 11966900 DOI: 10.1046/j.1365-2672.2002.01561.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS The objective of this study was to determine the technological behaviour (implantation and biogenic amines production) of Carnobacterium divergens V41, an anti-Listeria bacteriocin producer (divercin V41), after inoculation in cold smoked salmon (CSS). METHODS AND RESULTS Implantation of the strain was followed by multiplex-PCR during 27 days of storage at 4 degrees C, and biogenic amines were quantified by HPLC. It was found that the strain was able to develop quite well in CSS among lactic wild flora. Divercin V41 (400 AU ml-1) was produced in CSS, and the biogenic amine content was not modified by inoculation of the bacteria. CONCLUSIONS Carnobacterium divergens V41 is a safe, interesting, bioprotective agent. SIGNIFICANCE AND IMPACT OF THE STUDY This strain could potentially be used for efficient prevention of L. monocytogenes growth in CSS.
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Affiliation(s)
- N Connil
- Laboratoire de Microbiologie Alimentaire et Industrielle, ENITIAA, Nantes, France
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Pantev A, Kabadjova P, Dalgalarrondo M, Haertlé T, Ivanova I, Dousset X, Prévost H, Chobert JM. Isolation and partial characterization of an antibacterial substance produced by Enterococcus faecium. Folia Microbiol (Praha) 2002; 47:391-400. [PMID: 12422516 DOI: 10.1007/bf02818696] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
A strain of Enterococcus faecium isolated from Bulgarian yellow cheese "kashkaval" produced a bacteriocin-like substance named enterococcin A 2000. The antibacterial substance had a low molar mass (< 2 kDa), was relatively stable toward heat but was sensitive to selected proteolytic enzymes. It was active against Gram-positive bacteria including enterococci, such as Listeria, Bacillus and Streptococcus, and also against Gram-negative E. coli. Production of enterococcin A 2000 has a maximum near the end of the exponential phase of producer growth. The peptide was purified by ammonium sulfate precipitation, butanol extraction, followed by cation-exchange chromatography and reversed-phase chromatography. A partial sequence of purified enterococcin A 2000 indicated that this substance does not belong to the class IIa of bacteriocins presenting the consensus anti-Listeria motif YGNGV.
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Affiliation(s)
- A Pantev
- Department of Microbiology, Faculty of Biology, University of Sofia, 1423 Sofia, Bulgaria
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Pantev A, Kabadjova P, Valcheva R, Danova S, Dousset X, Haertlé T, Chobert JM, Ivanova I. Effects of nitrogen sources on bacteriocin production by Enterococcus faecium A 2000. Folia Microbiol (Praha) 2002; 47:659-62. [PMID: 12630315 DOI: 10.1007/bf02818667] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The production of a novel broad-spectrum antimicrobial peptide enterococcin A 2000, active against Gram-positive and Gram-negative microorganisms including Listeria subsp. and Escherichia coli, by Enterococcus faecium strain A 2000 isolated from the surface of traditional Bulgarian yellow cheese "kash-kaval" is considerably influenced by complex nitrogen sources in the production medium. Medium components, especially peptone and yeast extract, and their concentration contributed to the increase in bacteriocin production during the stationary phase (16-46 h) of cultivation even in the absence of one of the components present in the basal cultivation MRS medium.
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Affiliation(s)
- A Pantev
- Department of Microbiology, Faculty of Biology, University of Sofia, 1423 Sofia, Bulgaria
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Métivier A, Boyaval P, Duffes F, Dousset X, Compoint JP, Marion D. Triton X-114 phase partitioning for the isolation of a pediocin-like bacteriocin from Carnobacterium divergens. Lett Appl Microbiol 2000; 30:42-6. [PMID: 10728559 DOI: 10.1046/j.1472-765x.2000.00655.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A new procedure combining Triton X-114 phase partitioning and cation exchange chromatography was developed to purify a bacteriocin from a complex culture medium. This pediocin-like bacteriocin, secreted by Carnobacterium divergens and named divercin V41, was entirely recovered in the lower detergent-rich phase whereas all other substances (compounds from culture medium, bacterial metabolites) remained in the upper detergent-poor phase. Subsequent cation-exchange chromatography of the TX-114-rich phase allowed recovery of the pure active bacteriocin and also detergent removing. This new purification method is versatile, fast (only two steps) and can be carried out on whole broth.
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Affiliation(s)
- A Métivier
- I. NRA, Laboratoire de Biochimie et Technologie des Protéines, Nantes, France
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Duffes F, Corre C, Leroi F, Dousset X, Boyaval P. Inhibition of Listeria monocytogenes by in situ produced and semipurified bacteriocins of Carnobacterium spp. on vacuum-packed, refrigerated cold-smoked salmon. J Food Prot 1999; 62:1394-403. [PMID: 10606143 DOI: 10.4315/0362-028x-62.12.1394] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Listeria monocytogenes inhibition by Carnobacterium strains and crude bacteriocins on sterile and commercial vacuum-packed cold-smoked salmon stored at 4 degrees C and 8 degrees C was investigated. Carnobacterium piscicola V1 was bactericidal against L. monocytogenes at the two temperatures, whereas Carnobacterium divergens V41 presented a bacteriostatic effect. C. piscicola SF668 delayed L. monocytogenes growth at 8 degrees C and had a bacteriostatic effect at 4 degrees C. Listeria growth was not affected by a non-bacteriocin-producing C. piscicola. Crude extracts of piscicocins were bactericidal at 4 degrees C and 8 degrees C. Listeria growth was delayed by divercin V41 at 8 degrees C and was inhibited at 4 degrees C. Nisin delayed Listeria growth at 8 degrees C and was bacteriostatic at 4 degrees C. The present study demonstrates that L. monocytogenes growth could be prevented on vacuum-packed cold-smoked salmon by Carnobacterium and associated bacteriocins at chilled temperatures. Moreover, no product spoilage could be observed with the use of such bacteriocin-producing strains as demonstrated by good sensorial analyses and low biogenic amine production.
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Affiliation(s)
- F Duffes
- ENITIAA, Laboratoire de Microbiologie, Nantes, France.
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Bhugaloo-Vial P, Douliez JP, Moll D, Dousset X, Boyaval P, Marion D. Delineation of key amino acid side chains and peptide domains for antimicrobial properties of divercin V41, a pediocin-like bacteriocin secreted by Carnobacterium divergens V41. Appl Environ Microbiol 1999; 65:2895-900. [PMID: 10388680 PMCID: PMC91433 DOI: 10.1128/aem.65.7.2895-2900.1999] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/1998] [Accepted: 04/12/1999] [Indexed: 11/20/2022] Open
Abstract
Divercin V41 (DV41) is a class IIa bacteriocin produced by Carnobacterium divergens V41. This antilisterial peptide is homologous to pediocin PA-1 and contains two disulfide bonds. To establish the structure-activity relationships of this specific family of bacteriocin, chemical modifications and enzymatic hydrolysis were performed on DV41. Alteration of the net charge of this cationic bacteriocin by succinylation and acetylation revealed that, in a certain range, the electrostatic interactions were surprisingly not necessary for the activity of DV41. Cleavage of DV41 by endoproteinase Asp-N released two fragments N1[1-17] and N2[18-43] corresponding to the conserved hydrophilic N-terminal and the variable hydrophobic C-terminal sequences, respectively. Inhibitory assays showed that only the C-terminal fragment was active, and after trypsin cleavage at Lys42 or disulfide reduction it lost its inhibitory activity. These results suggested that both hydrophobicity and folding imposed by the Cys25-Cys43 disulfide bond were essential for antilisterial activity of the C-terminal hydrophobic peptide. Chemical oxidation of tryptophan residues by N-bromosuccinimide demonstrated that these residues were crucial for inhibitory activity since modification of any one of them rendered DV41 inactive. On the contrary, only the modification of all the three tyrosine residues caused a total loss of antilisterial activity. These latter results strengthened previous results suggesting that the N-terminal domain containing the YGNGV consensus sequence was not involved in the binding of DV41 to a potential specific receptor on listerial cells.
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Affiliation(s)
- P Bhugaloo-Vial
- Unité de Biochimie et Technologie des Protéines, INRA, 44316 Nantes Cedex 03, France
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Todorov S, Onno B, Sorokine O, Chobert JM, Ivanova I, Dousset X. Detection and characterization of a novel antibacterial substance produced by Lactobacillus plantarum ST 31 isolated from sourdough. Int J Food Microbiol 1999; 48:167-77. [PMID: 10443536 DOI: 10.1016/s0168-1605(99)00048-3] [Citation(s) in RCA: 98] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Lactobacillus plantarum ST31 isolated from sourdough produced an antimicrobial substance inhibiting other strains of the genera Lactobacillus, Leuconostoc, Pediococcus, Streptococcus, Bacillus and some foodborne pathogens including Staphylococcus aureus. This antimicrobial substance was inactivated by proteolytic enzymes. Consequently, it was characterized as a bacteriocin and was designated plantaricin ST31. This bacteriocin was stable in the pH range 3-8 and it was not affected by amylolytic enzymes. Production of plantaricin was pH and temperature dependent, and maximum yields were obtained in MRS broth cultures maintained at pH 6 and incubated at 30 degrees C in the exponential phase to the early stationary growth phase of the producer organism. This bacteriocin was purified by using consecutive ammonium sulfate and reversed-phase chromatography. It is a peptide of 20 amino acid residues with a mass of 2755+/-0.3 Da, as determined by electrospray mass spectrometry. The sequence of Plantaricin ST31 showed no similarity to those of other bacteriocins. Plantaricin ST31 production appeared to be chromosomally encoded.
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Affiliation(s)
- S Todorov
- Faculty of Biology, University of Sofia, Department of Microbiology, Bulgaria
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Duffes F, Leroi F, Boyaval P, Dousset X. Inhibition of Listeria monocytogenes by Carnobacterium spp. strains in a simulated cold smoked fish system stored at 4 degrees C. Int J Food Microbiol 1999; 47:33-42. [PMID: 10357271 DOI: 10.1016/s0168-1605(98)00206-2] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Preservation of smoked salmon from bacterial spoilage, and especially from Listeria monocytogenes by bacteriocin producers is a promising challenge. Over a hundred lactic acid bacteria, isolated from commercial vacuum packaged cold smoked salmon, were screened for their antagonistic activity against L. innocua. Twenty-two strains were able to produce bacteriocin-like proteinaceous substances. These strains were characterized physiologically and biochemically as Carnobacterium strains. Three different groups were determined by pulsed-field gel electrophoresis after Sma I and Apa I DNA digestion. Peptidoglycan hydrolases patterns completed the characterization of these strains. All were confirmed as being Carnobacterium piscicola. Growth and bacteriocin production of three strains of each group and two well known bacteriocin producers (C. divergens V41 and C. piscicola V1) were tested in a simulated cold smoked fish system at 4 degrees C. These strains were able to reach 10(8) cfu ml(-1) in 21 days and to produce as much bacteriocin activities in the cold smoked fish system as in the rich media. Carnobacterium divergens V41 and C. piscicola V1 were the most effective strains in co-culture experiments, inhibiting L. monocytogenes as early as day 4, whereas C. piscicola SF668 inhibiting effect was observed at day 13. The potential for using such biopreservation treatments on whole smoked salmon is discussed.
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Affiliation(s)
- F Duffes
- ENITIAA, Laboratoire de Microbiologie, Nantes, France.
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Connil N, Dousset X, Onno B, Pilet MF, Breuil MF, Montel MC. Enumeration of Carnobacterium divergens V41, Carnobacterium piscicola V1 and Lactobacillus brevis LB62 by in situ hybridization-flow cytometry. Lett Appl Microbiol 1998; 27:302-6. [PMID: 9830150 DOI: 10.1046/j.1472-765x.1998.t01-3-00449.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The specific detection and enumeration of Lactobacillus brevis LB62, Carnobacterium divergens V14 and Carnobacterium piscicola VI were studied by in situ hybridization-flow cytometry. The method was performed on the exponential growth phase with three probes targeting 16S rRNA labelled with fluorescein isothicyanate (FITC): EUB338 probe universal for Eubacteria, Lb probe specific for Lact. brevis and Cb probe specific for the genus Carnobacterium. EUB338 was used to determine the permeabilization and hybridization conditions for the cells. The Lb probe gave no hybridization signal whereas the Cb probe allowed the detection and quantification by flow cytometry at 520 nm of the two Carnobacterium strains in pure culture or in mixtures with Listeria innocua F.
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Affiliation(s)
- N Connil
- Laboratoire de Microbiologie Alimentaire et Industrielle, Nantes, France
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29
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Connil N, Dousset X, Onno B, Pilet MF, Breuil MF, Montel MC. Enumeration of Carnobacterium divergens V41, Carnobacterium piscicola V1 and Lactobacillus brevis LB62 by in situ hybridization-flow cytometry. Lett Appl Microbiol 1998. [DOI: 10.1046/j.1472-765x.1998.00429.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Miteva V, Ivanova I, Budakov I, Pantev A, Stefanova T, Danova S, Moncheva P, Mitev V, Dousset X, Boyaval P. Detection and characterization of a novel antibacterial substance produced by a Lactobacillus delbrueckii strain 1043. J Appl Microbiol 1998; 85:603-14. [PMID: 9750290 DOI: 10.1046/j.1365-2672.1998.853568.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A novel antibacterial substance produced by a strain isolated from Bulgarian yellow cheese was characterized. The producer strain was identified by molecular typing to belong to the species Lactobacillus delbrueckii, which is a rare producer of bacteriocins. The inhibitory agent was heat stable and active against lactic acid bacteria species and several food-borne pathogens: Listeria monocytogenes, Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Yersinia enterocolitica and Y. pseudotuberculosis. Its sensitivity to amylolitic enzymes and lipase suggested that a lipid and carbohydrate moiety could be important for the activity. The amino acid content of the purified bacteriocin was estimated to 29 amino acids. The bacteriocin was shown to be small (3.6-6 kDa) by three different methods: HPLC gel-filtration, SDS-PAGE and amino acid contents.
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Affiliation(s)
- V Miteva
- Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria.
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31
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Ivanova I, Miteva V, Stefanova T, Pantev A, Budakov I, Danova S, Moncheva P, Nikolova I, Dousset X, Boyaval P. Characterization of a bacteriocin produced by Streptococcus thermophilus 81. Int J Food Microbiol 1998; 42:147-58. [PMID: 9728685 DOI: 10.1016/s0168-1605(98)00067-1] [Citation(s) in RCA: 95] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A new bacteriocin, produced by Streptococcus thermophilus 81 has been isolated, purified and characterized. By its heat sensitivity and broad inhibitory spectrum it does not resemble any other S. thermophilus bacteriocin. The mode of action is bacteriostatic. This peptide of 32 amino acids is efficient against several Bacillus species, Listeria monocytogenes, Salmonella typhimurium, Escherichia coli, Yersinia pseudotuberculosis and Yersinia enterocolitica. This bacteriocin is heat labile but its activity was not altered by pH variation from 3 to 10. Six months of storage at 40 degrees C did not influence the activity. The inactivation by detergents and the inability to resolve the protein in SDS-PAGE supposes a more complex structure or a possible stabilizing effect of other molecules. The low sensitivity of Lactobacillus delbrueckii subsp. bulgaricus to the isolated bacteriocin suggests that S. thermophilus 81 may be used in yoghurt starters.
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Affiliation(s)
- I Ivanova
- Department of Microbiology, Faculty of Biology, Sofia University, Bulgaria.
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32
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Bhugaloo-Vial P, Dousset X, Metivier A, Sorokine O, Anglade P, Boyaval P, Marion D. Purification and amino acid sequences of piscicocins V1a and V1b, two class IIa bacteriocins secreted by Carnobacterium piscicola V1 that display significantly different levels of specific inhibitory activity. Appl Environ Microbiol 1996; 62:4410-6. [PMID: 8953713 PMCID: PMC168268 DOI: 10.1128/aem.62.12.4410-4416.1996] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Two bacteriocins produced by Carnobacterium piscicola V1 were purified and characterized. Piscicocin V1a (molecular mass = 4,416 Da) and piscicocin V1b (molecular mass = 4,526 Da) are nonlantibiotic, small, heat-stable antibacterial peptides. Piscicocin V1b is identical to carnobacteriocin BM1, while piscicocin V1a is a new bacteriocin. Its complete sequence of 44 amino acid residues has been determined. Piscicocin V1a belongs to the class IIa bacteriocins having the consensus YGNGV motif. These peptides inhibit various gram-positive bacteria, including Listeria monocytogenes. Piscicocin V1a is approximately 100 times more active than piscicocin V1b against indicator strains. However, the antagonistic spectrum is the same for both piscicocins. Comparison of these results with the analysis of the amino acid sequence and secondary structure predictions suggests that (i) the conserved N-terminal conserved domain is involved in the receptor recognition and therefore in an "all-or-none" response against target bacterial cells and (ii) the C-terminal variable and hydrophobic domain determines membrane anchoring and therefore the intensity of the antagonist response.
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Affiliation(s)
- P Bhugaloo-Vial
- Laboratoire de Microbiologie, Ecole Nationale d'Ingénieurs des Techniques des Industries Agricoles et Alimentaires, Nantes, France
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