WO1995006663A2 - BACTERIOCINA ACTIVA CONTRA LISTERIA MONOCYTOGENES OBTENIDA A PARTIR DE UNA CEPA DE $i(ENTEROCOCCUS FAECIUM) - Google Patents
BACTERIOCINA ACTIVA CONTRA LISTERIA MONOCYTOGENES OBTENIDA A PARTIR DE UNA CEPA DE $i(ENTEROCOCCUS FAECIUM) Download PDFInfo
- Publication number
- WO1995006663A2 WO1995006663A2 PCT/ES1994/000081 ES9400081W WO9506663A2 WO 1995006663 A2 WO1995006663 A2 WO 1995006663A2 ES 9400081 W ES9400081 W ES 9400081W WO 9506663 A2 WO9506663 A2 WO 9506663A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bacteriocin
- ctc492
- thr
- listeria
- strain
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/195—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
- C07K14/315—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria from Streptococcus (G), e.g. Enterococci
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
- A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
- A23L3/3463—Organic compounds; Microorganisms; Enzymes
- A23L3/34635—Antibiotics
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
- A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
- A23L3/3463—Organic compounds; Microorganisms; Enzymes
- A23L3/3526—Organic compounds containing nitrogen
Definitions
- the present invention relates to a new bacteriocin, obtained from a new strain of Enterococcus faecium, with bactericidal action against Listeria monocvtogenes and with application to inhibit the growth and spread of said pathogenic microorganism in food, especially in meat and meat. meat and milk products and dairy products.
- Listeria monocvtogenes is a pathogenic microorganism that causes serious disorders in people and animals and can be easily transmitted through contaminated food, especially through meat and meat products and milk and milk products. Said pathogenic microorganism is resistant to refrigeration but is sensitive under acidity conditions, that is, at low pH.
- bacteriocin is applied to substances of the peptide type, produced by microorganisms, capable of specifically inhibiting the growth of other bacteria by their absorption on specific receptors thereof.
- Marugg et al. describe in the European patent application nQ 0 493 779 a cloned gene, which codes for a bacteriocin of Pediococcus acidilactici. useful to inhibit the growth of Listeria in food products.
- Kawase, Kozo et al. describe in European Patent Application No. 0 503 939 an antimicrobial peptide capable of inhibiting Listeria monocvtogenes. among other microorganisms, obtained by hydrolysis of bovine lactoferrin.
- a product with antimicrobial activity obtained from Streptococcus faecium cultures. for the treatment and prevention of gastrointestinal disorders produced, in other microorganisms, by bacteria of the genus Listeria.
- Said product has a molecular weight of less than 1,000 and is not a bacteriocin.
- the bacteriocins against Listeria monocvtogenes described to date have different advantages and disadvantages, but there remains a need to find alternatives with a high degree of efficacy and affordability that allow the food industry to effectively combat the risks of contamination of its products by Listeria moncvtogenes.
- the authors of the present invention have 'discovered a novel bacteriocin produced by a novel strain of Enterococcus faecium, with surprising activity against Listeria monocytogenes specific and it is very affordable and easy to obtain.
- the present invention aims to provide a new bacteriocin against Listeria monocvtogenes. highly effective in combating the growth and spread of Listeria monocvtogenes in food.
- Another object of the present invention is to provide a new bacterial strain of Enterococcus faecium capable of producing said bacteriocin.
- Still another object of the present invention is the use of the bacteriocin or bacterial strain mentioned to prevent and prevent the growth and spread of Listeria monocvtogenes in food.
- the bacteriocin against Listeria monocvtogenes object of the present invention is characterized by being a peptide of molecular weight greater than 4,000 that is obtained by culturing the strain Enterococcus faecium bacterial CTC492.
- CTC492 is the denomination provided to the aforementioned strain by the authors of the present invention and corresponds to the Crop Collection of the Carn Technology Center, the Institute for Agrifood Research and Technology, with domicile at the Camps i Armet s Farm / n, 17121 Monells (Girona), Spain.
- a culture of the aforementioned strain has been deposited, in accordance with the provisions of the Budapest Treaty on the international recognition of the deposit of microorganisms for the purposes of the procedure for the Spanish Type Culture Collection (CECT) of the University of Valencia , domiciled at Campus de Burjasot, 46100 Burjasot (Valencia), Spain, which has assigned the deposit number CECT 4453.
- CECT Spanish Type Culture Collection
- the Enterococcus faecium CTC492 strain consists of gram-positive cocci, non-sporulated catalase negatives, whose main fermentation product is lactic acid and which are capable of producing August 22, 1994 a-hem lysis in blood agar (48 hours at 30QC ).
- the strain ferments the melibious, it is unable to ferment the melezitose and does not reduce the triphenyltetrazolium chloride (TTZ) in a medium with 0.1% thallium acetate. It has a positive growth at 45QC and in 6.5% of sodium chloride and reacts positively with the D antigen.
- TTZ triphenyltetrazolium chloride
- Enterococcus faecium genus are approved by the International Federation of Dairy Products as food grade bacteria useful for use as starter cultures in dairy products.
- the strain CTC492 can be grown with excellent results in an MRS broth (broth for lactobacilli according to De Man, Rogosa and Sharpe, marketed by DIFCO, 0X0ID, MERCK, etc.) in aerobiosis, at a temperature of the order of 30Q C .
- the bacteriocin against Listeria monocvtogenes object of the present invention obtained from strain CTC492, has a molecular weight of 4,282 Daltons and is a peptide consisting of 35 amino acids whose sequence is as follows:
- This amino acid sequence is new and has certain similarities with those of the bacteriocins pediocina, sakacina A, leucocina A and curvacina A.
- the bacteriocin object of the invention can be located in an EcoR1 chromosomal fragment of between 12 and 14 Kb.
- the bacteriocin object of the present invention is inactivated by treatment with proteolytic enzymes such as trypsin, nagarse or proteinase K, but it is resistant to a treatment at 100QC of temperature for 20 minutes.
- Both the whole culture of strain CTC492 and the entericin bacterio ⁇ cine CTC492 are capable of inhibiting the growth of Listeria monocvtogenes.
- Listeria innocua and Listeria welshi eri enl the tests of gout in agar, diffusion in agar and direct antagonism in conditions in which the inhibition due to acid and hydrogen peroxide is suppressed.
- the inhibitory action is bactericidal.
- Tests have also been carried out to inhibit the growth of the different strains of Listeria in contaminated food products, for example in contaminated crushed meat, with drastic reductions in the number of colony forming units (ufe), in times of order of 24 hours, after the addition of the enrericin CTC492 object of the invention.
- Entericin CTC492 can be obtained by a procedure consisting of cultivating the Enterococcus faecium CTC492 strain in MRS broth, centrifuging the culture to obtain the supernatant, treating it with cold ammonium sulfate and centrifuging it to recover the sediment consisting of a very active entericin concentrate CTC492, which can be resuspended in an appropriate amount of phosphate buffer solution at pH 7.0.
- the activity against Listeria is measured in units of activity, UA, according to the method described by Barefoot, S. et al. in Appl. Environ. Microbiol 45 (6), 1808-1815 (1983), conveniently adapted.
- a UA is the reciprocal of the highest dilution that has completely inhibited the Listeria monocvtogenes strain in a culture thereof with approximately 100.00 cfu / ml.
- UA is express per milliliter (UA / l) in the case of liquid preparations or per gram (UA / g) in the case of solid preparations.
- the CTC492 entericin concentrate obtained can be further purified by a four-stage protocol consisting of its precipitation in ammonium acetate, ion exchange chromatography, hydrophobic interaction 1 chromatrography and phase chromatography reverse in the FPLC system (Fast Performance Liquid Chromatography), eluting in a 30% isocratic gradient of isopropanol in a C2-C18 column.
- the molecular weight is determined, on the purified CTC492 entericin, by SDS-PAGE electrophoresis (Sodium Dodecy Sulfate-PolyAcrilamide Gel Electrophoresis) and by mass spectrometry.
- the entericin CTC492 object of the invention can also be obtained by known genetic engineering techniques, for example by cloning an auxiliary strain of any appropriate microorganism with a plasmid vector obtained from the chromosomal fragment responsible for the production of said entericin. CTC492.
- the CTC492 entericin concentrate obtained in the aforementioned obtaining procedures can be used, for application to food, in the form of a liquid suspension or in solid form, by drying and mixing it with any type of appropriate excipients or subjecting it to a lyophilization process, all through the application of techniques sufficiently known in the state of the art.
- the same culture of the Enterococcus faecium strain in liquid form can also be used in food application, frozen or not, dried or lyophilized, as well as any preparation from it, with different degrees of activity.
- Both the entericin CTC492 and the culture of the Enterococus faecium CTC492 strain and the preparations obtainable therefrom can be used with great efficiency to, by adding them to food by any appropriate known method, prevent and prevent the growth and spread in the same as Listeria monocvto ⁇ genes. even if the acidity of the mentioned foods is low.
- Entericin CTC492 the culture of the Enterococcus faecium CTC492 strain and the preparations obtainable therefrom can also be used in the treatment of food-containing packages, so that they constitute a protective barrier against contamination by Listeria monocvtogenes.
- they can be incorporated into a food protective film by known techniques, such as those described in European Patent Application No. 0384319.
- entericin CTC492 object of the present invention can be presented in the form of compositions of matter containing other types of chemical products, natural or not, or biological that are appropriate.
- Figure 1 shows a graph with the effect of the addition of entericin CTC492 to an exponential phase culture of Listeria monocvtogenes.
- Entericin was added at the concentrations of 800 AU / ml and 3,200 AU / ml and the results are represented in a comparative way with a control culture to which no ether has been added.
- the abscissa axis the elapsed time is represented and in the ordinate the logarithm of the colony-forming units per milliliter.
- Example 1 Obtaining a CTC492 entericin concentrate
- DIFCO with 1% by volume of a culture in MRS, in stationary phase, of Enterococcus faecium CTC492 and the resulting culture is incubated at 30QC for 12-18 hours.
- the culture is then centrifuged at 10,000 rpm for 10 minutes, the supernatant is collected and 40% by weight of ammonium sulfate is added thereto.
- the resulting mixture is maintained at 0QC and 5 Q C for 30 minutes and then centrifuged at 10,000 rpm for 35 minutes.
- the sediment obtained is suspended in 10 of 3mM potassium phosphate buffer at pH 7.0.
- the suspension obtained is the CTC492 entericin concentrate that can be used as is or diluted at different concentrations.
- Example 2 Assay for agar diffusion inhibition A culture in MRS broth of Enterococcus faecium CTC492, incubated for 20-24 hours at 30QC, is centrifuged at 10,000 rpm. The supernatant is taken, the pH is adjusted to 6.5 and sterilized by filtration with a 0.45 micrometer pore diameter filter.
- An MRS soft agar tube, with 0.2% glucose, is inoculated with 200 microliters of a Listeria monocvtogenes overnight culture. It is poured onto an MRS agar plate, with 0.2% glucose, and allowed to solidify. The sterile pipette of 3mm in diameter is perforated and the agar is deposited in each well 30 microliters of the supernatant of the culture of Enterococcus faecium obtained above. The plate is incubated in anaerobiosis, at 25QC for 24 hours and it is observed that a halo of 10mm inhibition occurs around each well in which the supernatant was deposited.
- Example 3 Inhibition of the growth of Listeria monovto ⁇ genes by the effect of entericin bacteriocin CTC492.
- Example 4 Inhibition assays of Listeria innocua in meat products.
- Two batches of meat dough were prepared for the preparation of sausages, according to a traditional recipe in the meat industry, and both were contaminated with innocuous Listeria levels of 10,000 cfu per gram of meat dough.
- One of the lots was added 800 AU per gram of entericin meat mass CTC492 obtained in Example 1. Next, the meat dough was stuffed.
- the deposited crop is available to the public without restrictions, under the conditions provided in the Treaty of
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nutrition Science (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Microbiology (AREA)
- Genetics & Genomics (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Gastroenterology & Hepatology (AREA)
- Peptides Or Proteins (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94924890A EP0705843A1 (en) | 1993-08-31 | 1994-08-29 | Bacteriocin from enterococcus feacium active against listeria monocytogenes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESP9301882 | 1993-08-31 | ||
ES09301882A ES2068157B1 (es) | 1993-08-31 | 1993-08-31 | Bacteriocina activa contra listeria monocytogenes obtenida a partir de una cepa de enterococcus faecium. |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1995006663A2 true WO1995006663A2 (es) | 1995-03-09 |
WO1995006663A3 WO1995006663A3 (es) | 1995-12-14 |
Family
ID=8282960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES1994/000081 WO1995006663A2 (es) | 1993-08-31 | 1994-08-29 | BACTERIOCINA ACTIVA CONTRA LISTERIA MONOCYTOGENES OBTENIDA A PARTIR DE UNA CEPA DE $i(ENTEROCOCCUS FAECIUM) |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0705843A1 (es) |
ES (1) | ES2068157B1 (es) |
WO (1) | WO1995006663A2 (es) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996026216A1 (en) * | 1995-02-22 | 1996-08-29 | The University Of Melbourne | Novel bacteriocin piscicolin 126 |
WO2007117337A2 (en) * | 2006-01-06 | 2007-10-18 | Iowa State University Research Foundation, Inc. | Development of novel antibiotic alternatives |
US7795000B2 (en) | 2004-09-24 | 2010-09-14 | Ecolab Inc. | Foaming composition of competitive exclusion microbes and methods of using same |
CN101305751B (zh) * | 2008-06-19 | 2011-02-09 | 成都大学 | 一种多肽营养奶的加工方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2114499B1 (es) * | 1996-07-10 | 1999-02-01 | Casa Tarradellas Sa | Bacteriocina activa contra listeria monocytogenes obtenida a partir de una cepa de enterococcus faecium. |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0493779A1 (en) * | 1990-12-31 | 1992-07-08 | Quest International B.V. | Cloned gene encoding for bacteriocin from pediococcus acidilactici |
-
1993
- 1993-08-31 ES ES09301882A patent/ES2068157B1/es not_active Expired - Fee Related
-
1994
- 1994-08-29 EP EP94924890A patent/EP0705843A1/en not_active Withdrawn
- 1994-08-29 WO PCT/ES1994/000081 patent/WO1995006663A2/es not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0493779A1 (en) * | 1990-12-31 | 1992-07-08 | Quest International B.V. | Cloned gene encoding for bacteriocin from pediococcus acidilactici |
Non-Patent Citations (2)
Title |
---|
JOURNAL OF FOOD PROTECTION, vol.55, num.7, 1992, IOWA, USA páginas 497 - 502 PARENTE, E. ET AL 'Characterization of enterocin 1146, a bacteriocin from Enterococcus faecium inhibitory to Listeria monocytogenes' * |
THE JOURNAL OF GENERAL MICROBIOLOGY, vol.88, 1975, CAMBRIDGE, GB páginas 93 - 100 KRÄMER, J. ET AL 'Purification and characterization of two bacteriocins from Streptococcus faecium' * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996026216A1 (en) * | 1995-02-22 | 1996-08-29 | The University Of Melbourne | Novel bacteriocin piscicolin 126 |
US6054163A (en) * | 1995-02-22 | 2000-04-25 | The University Of Melbourne | Bacteriocin piscicolin 126 |
US7592159B2 (en) | 2004-03-15 | 2009-09-22 | Iowa State University Research Foundation, Inc. | Antibiotic alternatives |
US7795000B2 (en) | 2004-09-24 | 2010-09-14 | Ecolab Inc. | Foaming composition of competitive exclusion microbes and methods of using same |
WO2007117337A2 (en) * | 2006-01-06 | 2007-10-18 | Iowa State University Research Foundation, Inc. | Development of novel antibiotic alternatives |
WO2007117337A3 (en) * | 2006-01-06 | 2008-07-17 | Univ Iowa State Res Found Inc | Development of novel antibiotic alternatives |
CN101305751B (zh) * | 2008-06-19 | 2011-02-09 | 成都大学 | 一种多肽营养奶的加工方法 |
Also Published As
Publication number | Publication date |
---|---|
ES2068157B1 (es) | 1995-11-01 |
WO1995006663A3 (es) | 1995-12-14 |
EP0705843A1 (en) | 1996-04-10 |
ES2068157A1 (es) | 1995-04-01 |
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