51
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Schirru S, Favaro L, Mangia NP, Basaglia M, Casella S, Comunian R, Fancello F, de Melo Franco BDG, de Souza Oliveira RP, Todorov SD. Comparison of bacteriocins production from Enterococcus faecium strains in cheese whey and optimised commercial MRS medium. ANN MICROBIOL 2013. [DOI: 10.1007/s13213-013-0667-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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52
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Partial characterization of bacteriocins produced by three strains of Lactobacillus sakei, isolated from salpicao, a fermented meat product from North-West of Portugal. Food Control 2013. [DOI: 10.1016/j.foodcont.2012.07.022] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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53
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Affiliation(s)
- Melissa Ivey
- Department of Food, Bioprocessing, and Nutrition Sciences, North Carolina State University, Raleigh, North Carolina 27695
| | - Mara Massel
- Department of Food, Bioprocessing, and Nutrition Sciences, North Carolina State University, Raleigh, North Carolina 27695
| | - Trevor G. Phister
- Division of Food Science, Brewing Science Program, School of Biological Sciences, University of Nottingham, Sutton Bonington LE12 5RD, United Kingdom;
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54
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Jena PK, Trivedi D, Chaudhary H, Sahoo TK, Seshadri S. Bacteriocin PJ4 active against enteric pathogen produced by Lactobacillus helveticus PJ4 isolated from gut microflora of wistar rat (Rattus norvegicus): partial purification and characterization of bacteriocin. Appl Biochem Biotechnol 2013; 169:2088-100. [PMID: 23371780 DOI: 10.1007/s12010-012-0044-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 12/17/2012] [Indexed: 01/09/2023]
Abstract
The increase of multidrug-resistant pathogens and the restriction on the use antibiotics due to its side effects have drawn attention to the search for possible alternatives. Bacteriocins are small antimicrobial peptides produced by numerous bacteria. Much interest has been focused on bacteriocins because they exhibit inhibitory activity against pathogens. Lactic acid bacteria possess the ability to synthesize antimicrobial compounds (like bacteriocin) during their growth. In this study, an antibacterial substance (bacteriocin PJ4) produced by Lactobacillus helveticus PJ4, isolated from rat gut microflora, was identified as bacteriocin. It was effective against wide assay of both Gram-positive and Gram-negative bacteria involved in various diseases, including Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa, Enterococcus faecalis, and Staphylococcus aureus. The antimicrobial peptide was relatively heat-resistant and also active over a wide pH range of 2-10. It has been partially purified to homogeneity using ammonium sulfate precipitation and size exclusion chromatography and checked on reverse-phase high-performance liquid chromatography. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of bacteriocin PJ4 purified through size exclusion chromatography resolved ~6.5 kDa protein with bacteriocin activity. The peptide is inactivated by proteolytic enzymes, trypsin, and lipase but not when treated with catalase, α-amylase, and pepsin. It showed a bactericidal mode of action against the indicator strains E. coli MTCC443, Lactobacillus casei MTCC1423, and E. faecalis DT48. Such characteristics indicate that this bacteriocin may be a potential candidate for alternative agents to control important pathogens.
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Affiliation(s)
- Prasant Kumar Jena
- Institute of Science, Nirma University, Sarkhej-Gandhinagar Highway, Chharodi, Ahmedabad 382481 Gujarat, India
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55
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Todorov S, Favaro L, Gibbs P, Vaz-Velho M. Enterococcus faecium isolated from Lombo, a Portuguese traditional meat product: characterisation of antibacterial compounds and factors affecting bacteriocin production. Benef Microbes 2012; 3:319-30. [DOI: 10.3920/bm2012.0036] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Strain ST211CH, identified as a strain of Enterococcus faecium, isolated from Lombo produced a bacteriocin that inhibited the growth of Enterococcus spp., Listeria spp., Klebsiella spp., Lactobacillus spp., Pseudomonas spp., Staphylococcus spp. and Streptococcus spp. The mode of action of the bacteriocin named as bacteriocin ST211Ch was bactericidal against Enterococcus faecalis ATCC19443. As determined by Tricine-SDS-PAGE, the approximate molecular mass of the bacteriocin was 8.0 kDa. Loss in antimicrobial activity was recorded after treatment with proteolytic enzymes. Maximum activity of bacteriocin ST211Ch was measured in broth cultures of E. faecium strain ST211Ch after 24 h; thereafter, the activity was reduced. Bacteriocin ST211Ch remained active after exposure to various temperatures and pHs, as well as to Triton X-100, Tween-80, Tween-20, sodium dodecyl sulfate, NaCl, urea and EDTA. Effect of media components on production of bacteriocin ST211Ch was also studied. On the basis of PCR reactions targeting different bacteriocin genes, i.e. enterocins, curvacins and sakacins, no evidences for the presence of these genes in the total DNA of E. faecium strain ST211Ch was obtained. The bacterium most probably produced a bacteriocin different from those mentioned above. Based on the antimicrobial spectrum, stability and mode of action of bacteriocin ST211CH, E. faecium strain ST211Ch might be considered as a potential candidate with beneficial properties for use in biopreservation to control food spoilage bacteria.
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Affiliation(s)
- S.D. Todorov
- Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Nutrição Experimental, Laboratório de Microbiologia de Alimentos, Universidade de São Paulo, Av. Prof. Lineu Prestes 580 Bloco 14, 05508-900 São Paulo SP, Brasil
- Escola Superior de Tecnologia e Gestão, Instituto Politécnico de Viana do Castelo, Avenida do Atlântico, 4900-348 Viana do Castelo, Portugal
| | - L. Favaro
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), Università degli Studi di Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - P. Gibbs
- Leatherhead Food Research, Randalls Road, Leatherhead, Surrey KT22 7RY, United Kingdom
- Escola Superior de Biotecnologia, Universidade Católica Portuguesa, R. Dr. Ant. Bernardino de Almeida, 4200-070 Porto, Portugal
| | - M. Vaz-Velho
- Escola Superior de Tecnologia e Gestão, Instituto Politécnico de Viana do Castelo, Avenida do Atlântico, 4900-348 Viana do Castelo, Portugal
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56
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O'Mahony A, O'Sullivan T, Walsh Y, Vaughan A, Maher M, Fitzgerald GF, van Sinderen D. Characterisation of Antimicrobial Producing Lactic Acid Bacteria from Malted Barley. JOURNAL OF THE INSTITUTE OF BREWING 2012. [DOI: 10.1002/j.2050-0416.2000.tb00531.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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57
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Hartnett DJ, Vaughan A, van Sinderen D. Antimicrobial-Producing Lactic Acid Bacteria Isolated from Raw Barley and Sorghum. JOURNAL OF THE INSTITUTE OF BREWING 2012. [DOI: 10.1002/j.2050-0416.2002.tb00537.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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58
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KUMAR MUKESH, JAIN ALOKKUMAR, GHOSH MOUSHUMI, GANGULI ABHIJIT. POTENTIAL APPLICATION OF AN ANTI-AEROMONAS BACTERIOCIN OF LACTOCOCCUS LACTIS SSP. LACTIS IN THE PRESERVATION OF VEGETABLE SALAD. J Food Saf 2012. [DOI: 10.1111/j.1745-4565.2012.00389.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- MUKESH KUMAR
- Department of Biotechnology and Environmental Sciences; Thapar University; Patiala; 147004; India
| | - ALOK KUMAR JAIN
- Department of Biotechnology and Environmental Sciences; Thapar University; Patiala; 147004; India
| | - MOUSHUMI GHOSH
- Department of Biotechnology and Environmental Sciences; Thapar University; Patiala; 147004; India
| | - ABHIJIT GANGULI
- Department of Biotechnology and Environmental Sciences; Thapar University; Patiala; 147004; India
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59
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Characterization and purification of a bacteriocin from Lactobacillus paracasei subsp. paracasei BMK2005, an intestinal isolate active against multidrug-resistant pathogens. World J Microbiol Biotechnol 2011; 28:1543-52. [DOI: 10.1007/s11274-011-0958-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Accepted: 11/17/2011] [Indexed: 11/25/2022]
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60
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Bacteriocinogenic Lactobacillus plantarum ST16Pa isolated from papaya (Carica papaya) — From isolation to application: Characterization of a bacteriocin. Food Res Int 2011. [DOI: 10.1016/j.foodres.2011.01.027] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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61
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Crost EH, Ajandouz EH, Villard C, Geraert PA, Puigserver A, Fons M. Ruminococcin C, a new anti-Clostridium perfringens bacteriocin produced in the gut by the commensal bacterium Ruminococcus gnavus E1. Biochimie 2011; 93:1487-94. [PMID: 21586310 DOI: 10.1016/j.biochi.2011.05.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Accepted: 05/03/2011] [Indexed: 10/18/2022]
Abstract
When colonizing the digestive tract of mono-associated rats, Ruminococcus gnavus E1 - a bacterium isolated from human faeces - produced a trypsin-dependent anti-Clostridium perfringens substance collectively named Ruminococcin C (RumC). RumC was isolated from the caecal contents of E1-monocontaminated rats and found to consist of two antimicrobial fractions: a single peptide (RumCsp) of 4235 Da, and a mixture of two other peptides (RumCdp) with distinct molecular masses of 4324 Da and 4456 Da. Both RumCsp and RumCdp were as effective as metronidazole in combating C. perfringens and their activity spectra against different pathogens were established. Even if devoid of synergistic activity, the combination of RumCsp and RumCdp was observed to be much more resistant to acidic pH and high temperature than each fraction tested individually. N-terminal sequence analysis showed that the primary structures of these three peptides shared a high degree of homology, but were clearly distinct from previously reported amino acid sequences. Amino acid composition of the three RumC peptides did not highlight the presence of any Lanthionine residue. However, Edman degradation could not run beyond the 11th amino acid residue. Five genes encoding putative pre-RumC-like peptides were identified in the genome of strain E1, confirming that RumC was a bacteriocin. This is the first time that a bacteriocin produced in vivo by a human commensal bacterium was purified and characterized.
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Affiliation(s)
- E H Crost
- ISM2/BiosCiences UMR CNRS 6263, Interactions Moléculaires Microbiote - Muqueuse Intestinale, Service 342, Faculté des Sciences et Techniques de St Jérôme, Université Paul Cézanne Aix-Marseille III, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
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62
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Osmanagaoglu O, Kiran F. Evidence for a chromosomally determined mesenterocin, a bacteriocin produced by Leuconostoc mesenteroides subsp. mesenteroides OZ. J Basic Microbiol 2011; 51:279-88. [DOI: 10.1002/jobm.201000240] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Accepted: 09/20/2010] [Indexed: 11/06/2022]
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63
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Bleicher A, Stark T, Hofmann T, Bogovič Matijašić B, Rogelj I, Scherer S, Neuhaus K. Potent antilisterial cell-free supernatants produced by complex red-smear cheese microbial consortia. J Dairy Sci 2010; 93:4497-505. [DOI: 10.3168/jds.2010-3244] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Accepted: 06/24/2010] [Indexed: 11/19/2022]
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64
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Slattery L, O’Callaghan J, Fitzgerald G, Beresford T, Ross R. Invited review: Lactobacillus helveticus—A thermophilic dairy starter related to gut bacteria. J Dairy Sci 2010; 93:4435-54. [DOI: 10.3168/jds.2010-3327] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Accepted: 05/22/2010] [Indexed: 11/19/2022]
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65
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AGUILAR CATALINA, KLOTZ BERNADETTE. EFFECT OF THE TEMPERATURE ON THE ANTAGONISTIC ACTIVITY OF LACTIC ACID BACTERIA AGAINST ESCHERICHIA COLI AND LISTERIA MONOCYTOGENES. J Food Saf 2010. [DOI: 10.1111/j.1745-4565.2010.00257.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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66
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Muriana PM, Klaenhammer TR. Conjugal Transfer of Plasmid-Encoded Determinants for Bacteriocin Production and Immunity in Lactobacillus acidophilus 88. Appl Environ Microbiol 2010; 53:553-60. [PMID: 16347304 PMCID: PMC203705 DOI: 10.1128/aem.53.3.553-560.1987] [Citation(s) in RCA: 148] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Lactobacillus acidophilus 88 produced a bacteriocin, designated lactacin F, that demonstrated inhibitory activity toward L. acidophilus 6032, L. lactis 970, L. helveticus 87, L. bulgaricus 1489, L. leichmanii 4797, L. fermentum 1750, and Streptococcus faecalis 19433. Production of lactacin F was pH dependent and could be maximized in MRS broth cultures maintained at pH 7.0. Lactacin F was heat stable and sensitive to ficin, proteinase K, trypsin, and Bacillus subtilis protease. L. acidophilus 88 harbored plasmids of 4 and 27 megadaltons. Variants of L. acidophilus 88 which were deficient in lactacin F production (Laf) and lactacin F immunity (Laf) retained the two resident plasmids. A Laf Laf derivative, L. acidophilus 89, was used as a recipient in agar surface mating experiments with L. acidophilus 88 (Laf Laf). Two types of Laf Laf transconjugants were recovered. One type (T-E) had acquired two plasmids of 68 (pPM68) and 52 (pPM52) megadaltons that were not detected in either the conjugal donor or the other type of Laf Laf transconjugants (T-89). Laf and Laf were unstable in the plasmid-bearing transconjugant. Plasmid analysis of Laf Laf variants revealed that pPM52 and pPM68 were cured with loss of Laf and Laf. Bacteriocin production and immunity phenotypes were genetically stable in Laf Laf transconjugants not harboring pPM52 and pPM68, suggesting chromosomal integration of the transferred determinants. The data demonstrated intragenic conjugation in L. acidophilus and provided direct evidence for involvement of transient plasmid determinants in Laf and Laf.
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Affiliation(s)
- P M Muriana
- Department of Food Science, North Carolina State University, Raleigh, North Carolina 27695-7624
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67
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Raya RR, Klaenhammer TR. High-Frequency Plasmid Transduction by Lactobacillus gasseri Bacteriophage phiadh. Appl Environ Microbiol 2010; 58:187-93. [PMID: 16348621 PMCID: PMC195190 DOI: 10.1128/aem.58.1.187-193.1992] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The temperate bacteriophage phiadh mediates plasmid DNA transduction in Lactobacillus gasseri ADH at frequencies in the range of 10 to 10 transductants per PFU. BglII-generated DNA fragments from phage phiadh were cloned into the BclI site of the transducible plasmid vector pGK12 (4.4 kb). Phage phiadh lysates induced from Lactobacillus lysogens harboring pGK12 or the recombinant plasmids were used to transduce strain ADH to chloramphenicol resistance. The transduction frequencies of recombinant plasmids were 10- to 10-fold higher than that of native pGK12. The increase in frequency generally correlated with the extent of DNA-DNA homology between plasmid and phage DNAs. The highest transduction frequency was obtained with plasmid pTRK170 (6.6 kb), a pGK12 derivative containing the 1.4- and 0.8-kb BglII DNA fragments of phiadh. DNA hybridization analysis of pTRK170-transducing phage particles revealed that pTRK170 had integrated into the phiadh genome, suggesting that recombination between homologous sequences present in phage and plasmid DNAs was responsible for the formation of high-frequency transducing phage particles. Plasmid DNA analysis of 13 transductants containing pTRK170 showed that each had acquired intact plasmids, indicating that in the process of transduction a further recombination step was involved in the resolution of plasmid DNA monomers from the recombinant pTRK170::phiadh molecule. In addition to strain ADH, pTRK170 could be transduced via phiadh to eight different L. gasseri strains, including the neotype strain, F. Gasser 63 AM (ATCC 33323).
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Affiliation(s)
- R R Raya
- Departments of Food Science and Microbiology, Southeast Dairy Foods Research Center, North Carolina State University, Raleigh, North Carolina 27695-7624
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68
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Mortvedt-Abildgaa CI, Nissen-Meyer J, Jelle B, Grenov B, Skaugen M, Nes IF. Production and pH-Dependent Bactericidal Activity of Lactocin S, a Lantibiotic from Lactobacillus sake L45. Appl Environ Microbiol 2010; 61:175-9. [PMID: 16534901 PMCID: PMC1388324 DOI: 10.1128/aem.61.1.175-179.1995] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The amount of lactocin S activity in a growing culture depends on the growth stage of the bacteria, the pH of the medium, the presence of ethanol, and the aeration of the culture. We observed the highest levels of bacteriocin activity in the early stationary growth phase of cultures at 30 deg C. When Lactobacillus sake L45 was grown in a fermentor at pH 5, it produced 2,000 to 3,000 bacteriocin units per ml, which represented an 8- to 10-fold increase in bacteriocin production compared with production during batch culture fermentation. Less than 10% of this level of bacteriocin activity was observed during fermentation at pH 6.0. When 1% ethanol was included in the growth medium, a two- to fourfold increase in the bacteriocin yield was observed. Aerating the culture during growth almost completely eliminated the production of active bacteriocin. Our results also showed that lactocin S-mediated killing of target cells depended on the pH of the culture. The pH had to be less than 6 in order to obtain a bactericidal effect with lactocin S-sensitive cells. At pH values greater than 6, lactocin S had no apparent effect on sensitive cells.
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69
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Bhardwaj A, Gupta H, Kapila S, Kaur G, Vij S, Malik RK. Safety assessment and evaluation of probiotic potential of bacteriocinogenic Enterococcus faecium KH 24 strain under in vitro and in vivo conditions. Int J Food Microbiol 2010; 141:156-64. [PMID: 20570005 DOI: 10.1016/j.ijfoodmicro.2010.05.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2009] [Revised: 03/17/2010] [Accepted: 05/02/2010] [Indexed: 11/24/2022]
Abstract
In the present investigation, a previously isolated Enterococcus faecium KH 24 strain was evaluated for the presence of virulence determinants (agg, esp, efaAfm, gelE, cylA, cylB, clyM, cpd, cob, ccf, ace and hyl), sensitivity to various antibiotics and production of biogenic amines. No virulence determinants were detected, except efaAfm. KH 24 was found to be sensitive to most of the tested antibiotics and none of the biogenic amines were produced by it. Moreover, KH 24 showed good in vitro tolerance to biological barriers and furthermore, its survival in gut of mice was also evaluated. Mice group fed with E. faecium KH 24 strain showed better weight gain and nearly 1 log cfu/g decrease in Salmonella enteritidis counts in the intestines as compared to control (p<0.05). Enhanced growth of lactobacilli (p<0.05) and decrease in coliform counts (p<0.05) were also observed in test group. E. faecium KH 24 is, therefore, found to be a safe strain and it may be used as protective culture or as a probiotic in food preparations.
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70
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Lee HJ, Kim WJ. Isolation and characterization of anti-listerial and amylase sensitive enterocin producing Enterococcus faecium DB1 from Gajami-sikhae, a fermented flat fish in Korea. Food Sci Biotechnol 2010. [DOI: 10.1007/s10068-010-0053-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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71
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Todorov S, Ho P, Vaz-Velho M, Dicks L. Characterization of bacteriocins produced by two strains of Lactobacillus plantarum isolated from Beloura and Chouriço, traditional pork products from Portugal. Meat Sci 2010; 84:334-43. [DOI: 10.1016/j.meatsci.2009.08.053] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Revised: 06/12/2009] [Accepted: 08/28/2009] [Indexed: 10/20/2022]
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72
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Luis Balcázar J, De Blas I, Ruiz-Zarzuela I, Vendrell D, Dolores Evora M, Luis Múzquiz J. Growth inhibition ofAeromonasspecies by lactic acid bacteria isolated from salmonids. MICROBIAL ECOLOGY IN HEALTH AND DISEASE 2009. [DOI: 10.1080/08910600600761331] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- José Luis Balcázar
- Laboratory of Fish Pathology, Department of Animal Pathology, University of Zaragoza, Zaragoza
| | - Ignacio De Blas
- Laboratory of Fish Pathology, Department of Animal Pathology, University of Zaragoza, Zaragoza
| | - Imanol Ruiz-Zarzuela
- Laboratory of Fish Pathology, Department of Animal Pathology, University of Zaragoza, Zaragoza
| | - Daniel Vendrell
- Laboratory of Fish Pathology, Department of Animal Pathology, University of Zaragoza, Zaragoza
| | | | - José Luis Múzquiz
- Laboratory of Fish Pathology, Department of Animal Pathology, University of Zaragoza, Zaragoza
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73
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Effect of modified MRS medium on production and purification of antimicrobial peptide ST4SA produced by Enterococcus mundtii. Anaerobe 2009; 15:65-73. [DOI: 10.1016/j.anaerobe.2008.11.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Revised: 10/06/2008] [Accepted: 11/18/2008] [Indexed: 11/23/2022]
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74
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Study of antimicrobial activity amongLactobacillus helveticus strains using three different assays. ANN MICROBIOL 2009. [DOI: 10.1007/bf03175620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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75
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Lee SS, Oh TJ, Kim J, Kim JB, Lee HS. Bacteriocin from Purple Nonsulfur Phototrophic Bacteria, Rhodobacter capsulatus. ACTA ACUST UNITED AC 2009. [DOI: 10.4167/jbv.2009.39.4.269] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Sang-Seob Lee
- Department of Life Science, Kyonggi University, Suwon, Korea
| | | | - Jaisoo Kim
- Department of Life Science, Kyonggi University, Suwon, Korea
| | - Jong-Bae Kim
- School of Life & Food Sciences, Handong Global University, Pohang, Korea
| | - Hyun-Soon Lee
- Department of Biological Sciences, Sungkyunkwan University, Suwon, Korea
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76
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Trmčić A, Obermajer T, Rogelj I, Bogovič Matijašić B. Short Communication: Culture-Independent Detection of Lactic Acid Bacteria Bacteriocin Genes in Two Traditional Slovenian Raw Milk Cheeses and Their Microbial Consortia. J Dairy Sci 2008; 91:4535-41. [DOI: 10.3168/jds.2008-1396] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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77
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Pham LC, van Spanning RJM, Röling WFM, Prosperi AC, Terefework Z, Ten Cate JM, Crielaard W, Zaura E. Effects of probiotic Lactobacillus salivarius W24 on the compositional stability of oral microbial communities. Arch Oral Biol 2008; 54:132-7. [PMID: 18976742 DOI: 10.1016/j.archoralbio.2008.09.007] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2008] [Revised: 09/12/2008] [Accepted: 09/20/2008] [Indexed: 12/16/2022]
Abstract
Probiotics are microorganisms beneficial to gastrointestinal health. Although some strains are also known to possess positive effects on oral health, the effects of most intestinal probiotics on the oral microflora remain unknown. We assessed the ability of the intestinal probiotic Lactobacillus salivarius W24 to incorporate into and to affect the compositional stability and cariogenicity of oral microbial communities. Microtiter plates with hydroxyapatite discs were incubated with W24 ("+W24") or without W24 ("-W24") and saliva from four individuals in plain ("-sucrose") or sucrose-supplemented ("+sucrose") medium. Biofilms were subjected to community profiling by 16S rRNA gene-based Denaturing Gradient Gel Electrophoresis (DGGE) after 72h growth. Diversity (Shannon-Weaver index) and similarities (Pearson correlation) between biofilm communities were calculated. Microcosms "+sucrose" were less diverse and more acidic than "-sucrose" microcosms (p<0.001). The effects of W24 on the community profiles were pH dependent: at pH 4 ("+sucrose"), the respective "+W24" and "-W24" microcosms differed significantly more from each other than if the pH was approximately 7 ("-sucrose"). The pH of "+W24/+sucrose" microcosms was lower (p<0.05) than the pH of the microcosms supplemented with sucrose alone ("-W24/+sucrose"). Although not able to form a monospecies biofilm, L. salivarius W24 established itself into the oral community if inoculated simultaneously with the microcosm. In the presence of sucrose and low pH, W24 further lowered the pH and changed the community profiles of these microcosms. Screening of probiotics for their effects on oral microbial communities allows selecting strains without a potential for oral health hazards.
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Affiliation(s)
- Lien Chi Pham
- Department of Cariology Endodontology Pedodontology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Louwesweg 1, 1066 EA Amsterdam, The Netherlands
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78
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Wu Z, Wang L, Jing Y, Li X, Zhao Y. Variable Volume Fed-Batch Fermentation for Nisin Production by Lactococcus lactis subsp. lactis W28. Appl Biochem Biotechnol 2008; 152:372-82. [DOI: 10.1007/s12010-008-8335-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2008] [Accepted: 07/29/2008] [Indexed: 11/30/2022]
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79
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Parente E, Hill C. A comparison of factors affecting the production of two bacteriocins from lactic acid bacteria. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1365-2672.1992.tb04980.x] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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80
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Hugas M, Garriga M, Aymerich M, Monfort J. Inhibition ofListeriain dry fermented sausages by the bacteriocinogenicLactobacillus sakeCTC494. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1365-2672.1995.tb03144.x] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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81
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82
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Kaiser A, Montville T. The influence of pH and growth rate on production of the bacteriocin, bavaricin MN, in batch and continuous fermentations. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1365-2672.1993.tb01591.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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83
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Vignolo GM, de Kairuz MN, de Ruiz Holgado AA, Oliver G. Influence of growth conditions on the production of lactocin 705, a bacteriocin produced byLactobacillus caseiCRL 705. ACTA ACUST UNITED AC 2008. [DOI: 10.1111/j.1365-2672.1995.tb01665.x] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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84
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Todorov SD. Bacteriocin production by Lactobacillus plantarum AMA-K isolated from Amasi, a Zimbabwean fermented milk product and study of the adsorption of bacteriocin AMA-K TO Listeria sp. Braz J Microbiol 2008; 39:178-87. [PMID: 24031200 PMCID: PMC3768375 DOI: 10.1590/s1517-838220080001000035] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2007] [Revised: 10/17/2007] [Accepted: 01/23/2008] [Indexed: 11/30/2022] Open
Abstract
Bacteriocin AMA-K produced by Lactobacillus plantarum AMA-K inhibits the growth of Enterococcus spp., Escherichia coli, Klebsiella pneumoniae and Listeria spp. Growth of strain AMA-K in BHI, M17, soy milk and molasses was similar to growth in MRS. The effect of organic nitrogen sources, carbohydrates, glycerol, K2HPO4 and KH2PO4, MgSO4, MnSO4, tri-ammonium citrate, Tween 80, vitamins and initial pH on bacteriocin AMA-K was determined. The mode of action of bacteriocin AMA-K was studied. The effect of bacteriocin AMA-K to actively growing Listeria innocua LMG13568, L. ivanovii subsp. ivanovii ATCC19119 and L. monocytogenes ScottA was determined. Adsorption of bacteriocin AMA-K to target cells at different temperatures, pH and in presence of Tween 20, Tween 80, ascorbic acid, potassium sorbate, sodium nitrate and sodium chloride were studied. Bacteriocin AMA-K shares high homology to pediocin PA-1.
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Affiliation(s)
- Svetoslav D Todorov
- Department of Microbiology, University of Stellenbosch , Stellenbosch , South Africa
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85
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Isolation and purification of enterocin E-760 with broad antimicrobial activity against gram-positive and gram-negative bacteria. Antimicrob Agents Chemother 2007; 52:1094-100. [PMID: 18086839 DOI: 10.1128/aac.01569-06] [Citation(s) in RCA: 156] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Strain NRRL B-30745, isolated from chicken ceca and identified as Enterococcus durans, Enterococcus faecium, or Enterococcus hirae, was initially identified as antagonistic to Campylobacter jejuni. The isolate produced a 5,362-Da bacteriocin (enterocin) that inhibits the growth of Salmonella enterica serovar Enteritidis, S. enterica serovar Choleraesuis, S. enterica serovar Typhimurium, S. enterica serovar Gallinarum, Escherichia coli O157:H7, Yersinia enterocolitica, Citrobacter freundii, Klebsiella pneumoniae, Shigella dysenteriae, Pseudomonas aeruginosa, Proteus mirabilis, Morganella morganii, Staphylococcus aureus, Staphylococcus epidermidis, Listeria monocytogenes, Campylobacter jejuni, and 20 other Campylobacter species isolates. The enterocin, E-760, was isolated and purified by cation-exchange and hydrophobic-interaction chromatographies. The proteinaceous nature of purified enterocin E-760 was demonstrated upon treatment with various proteolytic enzymes. Specifically, the antimicrobial peptide was found to be sensitive to beta-chymotrypsin, proteinase K, and papain, while it was resistant to lysozyme and lipase. The enterocin demonstrated thermostability by retaining activity after 5 min at 100 degrees C and was stable at pH values between 5.0 and 8.7. However, activity was lost below pH 3.0 and above pH 9.5. Administration of enterocin E-760-treated feed significantly (P < 0.05) reduced the colonization of young broiler chicks experimentally challenged and colonized with two strains of C. jejuni by more than 8 log(10) CFU. Enterocin E-760 also significantly (P < 0.05) reduced the colonization of naturally acquired Campylobacter species in market age broiler chickens when administered in treated feed 4 days prior to analysis.
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86
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Swe PM, Heng NCK, Ting YT, Baird HJ, Carne A, Tauch A, Tagg JR, Jack RW. ef1097 and ypkK encode enterococcin V583 and corynicin JK, members of a new family of antimicrobial proteins (bacteriocins) with modular structure from Gram-positive bacteria. Microbiology (Reading) 2007; 153:3218-3227. [PMID: 17906121 DOI: 10.1099/mic.0.2007/010777-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Unlike the colicins, microcins and related peptide antibiotics, little is known about antibiotic proteins (M(r)>10,000) from Gram-positive bacteria, since only few examples have been described to date. In this study we used heterologous expression of recombinant proteins to access the 17 kDa antibiotic protein SA-M57 from Streptococcus pyogenes, along with two proteins of unknown function identified in publicly available databases: EF1097 from Enterococcus faecalis and YpkK from Corynebacterium jeikeium. Here we show that all three are antibiotic proteins with different spectra of antimicrobial activity that kill sensitive bacteria at nanomolar concentrations. In silico structure predictions indicate that although the three proteins share little sequence similarity, they may be composed of conserved secondary structural elements: a relatively unstructured, acidic N-terminal portion and a basic C-terminal portion characterized by two helical elements separated by a loop structure and stabilized by an essential disulphide. Expression of individual segments as well as protein chimaeras revealed that, at least in the case of YpkK, the C-terminal portion is responsible for the killing action of the protein, whereas the role of the N-terminal portion remains unclear. Both scnM57 and ef1097 appear to be widely distributed in Strep. pyogenes and Ent. faecalis (respectively), whereas ypkK is found only rarely amongst clinical isolates of C. jeikeium. Finally, we determined that the proteins kill sensitive bacteria without lysis, a feature that distinguishes them from known murolytic proteins.
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Affiliation(s)
- Pearl M Swe
- Department of Microbiology and Immunology, Otago School of Medical Sciences, The University of Otago, PO Box 56, Dunedin, New Zealand
| | - Nicholas C K Heng
- Department of Microbiology and Immunology, Otago School of Medical Sciences, The University of Otago, PO Box 56, Dunedin, New Zealand
| | - Yi-Tian Ting
- Department of Microbiology and Immunology, Otago School of Medical Sciences, The University of Otago, PO Box 56, Dunedin, New Zealand
| | - Hayley J Baird
- Department of Microbiology and Immunology, Otago School of Medical Sciences, The University of Otago, PO Box 56, Dunedin, New Zealand
| | - Alan Carne
- Department of Biochemistry, Otago School of Medical Sciences, The University of Otago, PO Box 56, Dunedin, New Zealand
| | - Andreas Tauch
- Institut für Genomforschung und Systembiologie, Centrum für Biotechnologie, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany
| | - John R Tagg
- Department of Microbiology and Immunology, Otago School of Medical Sciences, The University of Otago, PO Box 56, Dunedin, New Zealand
| | - Ralph W Jack
- Department of Microbiology and Immunology, Otago School of Medical Sciences, The University of Otago, PO Box 56, Dunedin, New Zealand
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87
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Suwanjinda D, Eames C, Panbangred W. Screening of lactic acid bacteria for bacteriocins by microbiological and PCR methods. BIOCHEMISTRY AND MOLECULAR BIOLOGY EDUCATION : A BIMONTHLY PUBLICATION OF THE INTERNATIONAL UNION OF BIOCHEMISTRY AND MOLECULAR BIOLOGY 2007; 35:364-369. [PMID: 21591125 DOI: 10.1002/bmb.84] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We describe a practical laboratory designed for third-year undergraduate students of Biotechnology as part of a Microbial Physiology and Genetics course. It comprises a five-session laboratory module to screen foods for lactic acid bacteria (LAB)1 and to test isolated LAB for the presence of bacteriocins. Traditional Thai fermented foods are first screened for bacteriocin-producing LAB using microbiological methods. This is followed by a simple and rapid DNA extraction and by a multiplex polymerase chain reaction (PCR) using three pairs of specific primers to test for the presence or absence of various bacteriocin genes in the isolated LAB. PCR amplicons of 332, 412, and 608 bp indicate the presence of pediocin, enterocin, and nisin genes, respectively, whereas no amplicon band indicates the absence of these bacteriocins. The laboratory provides the students with experience in the use of microbiological and multiplex PCR methods and shows how the molecular biology techniques can be related to their daily lives. The module could easily be adapted to the study of fermented foods from other countries.
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88
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Lozo J, Jovcic B, Kojic M, Dalgalarrondo M, Chobert JM, Haertlé T, Topisirovic L. Molecular Characterization of a Novel Bacteriocin and an Unusually Large Aggregation Factor of Lactobacillus paracasei subsp. paracasei BGSJ2-8, a Natural Isolate from Homemade Cheese. Curr Microbiol 2007; 55:266-71. [PMID: 17657532 DOI: 10.1007/s00284-007-0159-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2007] [Accepted: 05/16/2007] [Indexed: 11/25/2022]
Abstract
Screening the collection of natural isolates from semi-hard homemade cheese resulted in isolation and characterization of strain Lactobacillus paracasei subsp. paracasei BGSJ2-8. The strain BGSJ2-8 harbors several important phenotypes, such as bacteriocin production, aggregation phenomenon, and production of proteinase. Bacteriocin SJ was purified by three-step chromatography. Mass spectrometry established molecular mass of the active peptide at 5372 Da. The auto-aggregation phenotype of wild-type (WT) strain was mediated by secreted aggregation-promoting factor (protein of molecular mass > 200 kDa), probably acting in cooperation with other cell surface protein(s). Comparative study of WT and its spontaneous nonaggregating derivative revealed that aggregation factor was responsible for the observed differences in the bacteriocin and proteinase activities. Bacteriocin SJ activity and resistance to different stresses were higher in the presence of aggregating factor. In contrast, proteinase activity was stronger in the nonaggregating derivative.
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Affiliation(s)
- Jelena Lozo
- Institute of Molecular Genetics and Genetic Engineering, Vojvode Stepe 444a, PO Box 23, 11010, Belgrade, Serbia
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89
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Todorov S, Nyati H, Meincken M, Dicks L. Partial characterization of bacteriocin AMA-K, produced by Lactobacillus plantarum AMA-K isolated from naturally fermented milk from Zimbabwe. Food Control 2007. [DOI: 10.1016/j.foodcont.2006.03.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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90
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Powell J, Witthuhn R, Todorov S, Dicks L. Characterization of bacteriocin ST8KF produced by a kefir isolate Lactobacillus plantarum ST8KF. Int Dairy J 2007. [DOI: 10.1016/j.idairyj.2006.02.012] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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91
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Screening of Locally Isolated Lactic Acid Bacteria for Use as Probiotics in Poultry in Iran. J Poult Sci 2007. [DOI: 10.2141/jpsa.44.357] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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92
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. NM, . CA. Kinetics of Growth and Bacteriocin Production in L. casei RN 78 Isolated from a Dairy Sample in IR Iran. ACTA ACUST UNITED AC 2006. [DOI: 10.3923/ijds.2007.1.12] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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93
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Stern NJ, Svetoch EA, Eruslanov BV, Perelygin VV, Mitsevich EV, Mitsevich IP, Pokhilenko VD, Levchuk VP, Svetoch OE, Seal BS. Isolation of a Lactobacillus salivarius strain and purification of its bacteriocin, which is inhibitory to Campylobacter jejuni in the chicken gastrointestinal system. Antimicrob Agents Chemother 2006; 50:3111-6. [PMID: 16940109 PMCID: PMC1563535 DOI: 10.1128/aac.00259-06] [Citation(s) in RCA: 169] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2006] [Revised: 04/20/2006] [Accepted: 06/07/2006] [Indexed: 11/20/2022] Open
Abstract
We evaluated anti-Campylobacter jejuni activity among >1,200 isolates of different lactic acid bacteria. Lactobacillus salivarius strain NRRL B-30514 was selected for further study. The cell-free, ammonium sulfate precipitate from the broth culture was termed the crude antimicrobial preparation. Ten microliters of the crude preparation created a zone of C. jejuni growth inhibition, and growth within the zone resumed when the crude preparation was preincubated with proteolytic enzymes. Bacteriocin OR-7, derived from this crude preparation, was further purified using ion-exchange and hydrophobic-interaction chromatography. The determined amino acid sequence was consistent with class IIa bacteriocins. Interestingly, OR-7 had sequence similarity, even in the C-terminal region, to acidocin A, which was previously identified from L. acidophilus and had activity only to gram-positive bacteria, whereas OR-7 had activity to a gram-negative bacterium. Bacteriocin activity was stable following exposure to 90 degrees C for 15 min, also consistent with these types of antibacterial peptides. The purified protein was encapsulated in polyvinylpyrrolidone and added to chicken feed. Ten day-of-hatch chicks were placed in each of nine isolation units; two groups of birds were challenged with each of four C. jejuni isolates (one isolate per unit). At 7 days of age, one group of birds was treated with bacteriocin-emended feed for 3 days, and one group was left untreated. At 10 days of age, the birds were sacrificed and the challenge strain was enumerated from the bird cecal content. Bacteriocin treatment consistently reduced colonization at least one millionfold compared with levels found in the untreated groups. Nonchallenged birds were never colonized by C. jejuni. Bacteriocin from L. salivarius NRRL B-30514 appears potentially very useful to reduce C. jejuni in poultry prior to processing.
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Affiliation(s)
- N J Stern
- USDA-ARS, Russell Research Center, Athens, GA 30604, USA.
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94
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Heng NCK, Ragland NL, Swe PM, Baird HJ, Inglis MA, Tagg JR, Jack RW. Dysgalacticin: a novel, plasmid-encoded antimicrobial protein (bacteriocin) produced by Streptococcus dysgalactiae subsp. equisimilis. MICROBIOLOGY-SGM 2006; 152:1991-2001. [PMID: 16804174 DOI: 10.1099/mic.0.28823-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Dysgalacticin is a novel bacteriocin produced by Streptococcus dysgalactiae subsp. equisimilis strain W2580 that has a narrow spectrum of antimicrobial activity directed primarily against the principal human streptococcal pathogen Streptococcus pyogenes. Unlike many previously described bacteriocins of Gram-positive bacteria, dysgalacticin is a heat-labile 21.5 kDa anionic protein that kills its target without inducing lysis. The N-terminal amino acid sequence of dysgalacticin [Asn-Glu-Thr-Asn-Asn-Phe-Ala-Glu-Thr-Gln-Lys-Glu-Ile-Thr-Thr-Asn-(Asn)-Glu-Ala] has no known homologue in publicly available sequence databases. The dysgalacticin structural gene, dysA, is located on the indigenous plasmid pW2580 of strain W2580 and encodes a 220 aa preprotein which is probably exported via a Sec-dependent transport system. Natural dysA variants containing conservative amino acid substitutions were also detected by sequence analyses of dysA elements from S. dysgalactiae strains displaying W2580-like inhibitory profiles. Production of recombinant dysgalacticin by Escherichia coli confirmed that this protein is solely responsible for the inhibitory activity exhibited by strain W2580. A combination of in silico secondary structure prediction and reductive alkylation was employed to demonstrate that dysgalacticin has a novel structure containing a disulphide bond essential for its biological activity. Moreover, dysgalacticin displays similarity in predicted secondary structure (but not primary amino acid sequence or inhibitory spectrum) with another plasmid-encoded streptococcal bacteriocin, streptococcin A-M57 from S. pyogenes, indicating that dysgalacticin represents a prototype of a new class of antimicrobial proteins.
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Affiliation(s)
- Nicholas C K Heng
- Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Nancy L Ragland
- Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Pearl M Swe
- Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Hayley J Baird
- Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Megan A Inglis
- Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
| | - John R Tagg
- Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Ralph W Jack
- Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
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95
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Rattanachaikunsopon P, Phumkhachorn P. Isolation and preliminary characterization of a bacteriocin produced by Lactobacillus plantarum N014 isolated from nham, a traditional Thai fermented pork. J Food Prot 2006; 69:1937-43. [PMID: 16924920 DOI: 10.4315/0362-028x-69.8.1937] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Lactobacillus plantarum N014 was isolated from nham, a traditional Thai fermented pork, and exhibited antimicrobial activity against Listeria monocytogenes. Its bacteriocin had a broad inhibitory spectrum toward both gram-positive and gram-negative bacteria. The bacteriocin activity was sensitive to all proteolytic enzymes used in this study, including papain, pepsin, pronase E, proteinase K, and trypsin, but was resistant to the other enzymes, such as alpha-amylase, lipase A, and lysozyme. Furthermore, activity was stable over various heat treatments and pH values. The bacteriocin exerted a bacteriolytic mode of action. It was produced during the exponential growth phase and reached its highest level as producer cells entered the stationary phase. Adsorption of the bacteriocin onto producer cells was pH-dependent. No bacteriocin adsorption was detected at pH 1 to 3, whereas 100% bacteriocin adsorption was found at pH 7. Plasmid isolation revealed that L. plantarum N014 contained no plasmids. From Tricine-sodium dodecyl sulfate-polyacrylamide gel electrophoresis and growth inhibition testing against L. monocytogenes, the estimated molecular mass of L. plantarum N014 bacteriocin was 8 kDa.
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Affiliation(s)
- Pongsak Rattanachaikunsopon
- Department of Biological Science, Ubon Ratchathani University, Warin Chamrap, Ubon Ratchathani 34190, Thailand.
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96
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Medium components effecting bacteriocin production by two strains of Lactobacillus plantarum ST414BZ and ST664BZ isolated from boza. Biologia (Bratisl) 2006. [DOI: 10.2478/s11756-006-0049-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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97
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Gwiazdowska D, Trojanowska K. Antimicrobial activity and stability of partially purified bacteriocins produced byPropionibacterium freudenreichiissp.freudenreichiiand ssp.shermanii. ACTA ACUST UNITED AC 2006. [DOI: 10.1051/lait:2006001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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98
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Mills S, McAuliffe OE, Coffey A, Fitzgerald GF, Ross RP. Plasmids of lactococci – genetic accessories or genetic necessities? FEMS Microbiol Rev 2006; 30:243-73. [PMID: 16472306 DOI: 10.1111/j.1574-6976.2005.00011.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Lactococci are one of the most exploited microorganisms used in the manufacture of food. These intensively used cultures are generally characterized by having a rich plasmid complement. It could be argued that it is the plasmid complement of commercially utilized cultures that gives them their technical superiority and individuality. Consequently, it is timely to reflect on the desirable characteristics encoded on lactococcal plasmids. It is argued that plasmids play a key role in the evolution of modern starter strains and are a lot more than just selfish replicosomes but more essential necessities of intensively used commercial starters. Moreover, the study of plasmid biology provides a genetic blueprint that has proved essential for the generation of molecular tools for the genetic improvement of Lactococcus lactis.
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Affiliation(s)
- Susan Mills
- Teagasc, Dairy Products Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
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99
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100
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Screening for bacteriocin-producing lactic acid bacteria from boza, a traditional cereal beverage from Bulgaria. Process Biochem 2006. [DOI: 10.1016/j.procbio.2005.01.026] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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