WO2003027268A2 - Souches de lactococcus lactis et leur application a la conservation de produits alimentaires - Google Patents
Souches de lactococcus lactis et leur application a la conservation de produits alimentaires Download PDFInfo
- Publication number
- WO2003027268A2 WO2003027268A2 PCT/FR2002/003180 FR0203180W WO03027268A2 WO 2003027268 A2 WO2003027268 A2 WO 2003027268A2 FR 0203180 W FR0203180 W FR 0203180W WO 03027268 A2 WO03027268 A2 WO 03027268A2
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- WIPO (PCT)
- Prior art keywords
- lactococcus lactis
- llo
- strain
- product
- food
- Prior art date
Links
- 241000194035 Lactococcus lactis Species 0.000 title claims abstract description 44
- 235000014897 Streptococcus lactis Nutrition 0.000 title claims abstract description 43
- 235000013305 food Nutrition 0.000 title claims description 49
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 title description 32
- 241000894006 Bacteria Species 0.000 title description 19
- 239000004310 lactic acid Substances 0.000 title description 16
- 235000014655 lactic acid Nutrition 0.000 title description 16
- 235000014102 seafood Nutrition 0.000 claims abstract description 9
- 238000004321 preservation Methods 0.000 claims abstract description 8
- LWGJTAZLEJHCPA-UHFFFAOYSA-N n-(2-chloroethyl)-n-nitrosomorpholine-4-carboxamide Chemical compound ClCCN(N=O)C(=O)N1CCOCC1 LWGJTAZLEJHCPA-UHFFFAOYSA-N 0.000 claims abstract 3
- 238000000034 method Methods 0.000 claims description 17
- 239000000725 suspension Substances 0.000 claims description 16
- 235000019645 odor Nutrition 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 238000011161 development Methods 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 230000002829 reductive effect Effects 0.000 claims description 11
- 244000052616 bacterial pathogen Species 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000000284 extract Substances 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000011081 inoculation Methods 0.000 claims description 3
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- 230000006798 recombination Effects 0.000 claims description 2
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- 238000012360 testing method Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 241000251468 Actinopterygii Species 0.000 description 10
- 235000019688 fish Nutrition 0.000 description 10
- 230000002906 microbiologic effect Effects 0.000 description 8
- 241000972773 Aulopiformes Species 0.000 description 7
- 235000019515 salmon Nutrition 0.000 description 7
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- 108010062877 Bacteriocins Proteins 0.000 description 4
- 108010053775 Nisin Proteins 0.000 description 4
- NVNLLIYOARQCIX-MSHCCFNRSA-N Nisin Chemical compound N1C(=O)[C@@H](CC(C)C)NC(=O)C(=C)NC(=O)[C@@H]([C@H](C)CC)NC(=O)[C@@H](NC(=O)C(=C/C)/NC(=O)[C@H](N)[C@H](C)CC)CSC[C@@H]1C(=O)N[C@@H]1C(=O)N2CCC[C@@H]2C(=O)NCC(=O)N[C@@H](C(=O)N[C@H](CCCCN)C(=O)N[C@@H]2C(NCC(=O)N[C@H](C)C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCSC)C(=O)NCC(=O)N[C@H](CS[C@@H]2C)C(=O)N[C@H](CC(N)=O)C(=O)N[C@H](CCSC)C(=O)N[C@H](CCCCN)C(=O)N[C@@H]2C(N[C@H](C)C(=O)N[C@@H]3C(=O)N[C@@H](C(N[C@H](CC=4NC=NC=4)C(=O)N[C@H](CS[C@@H]3C)C(=O)N[C@H](CO)C(=O)N[C@H]([C@H](C)CC)C(=O)N[C@H](CC=3NC=NC=3)C(=O)N[C@H](C(C)C)C(=O)NC(=C)C(=O)N[C@H](CCCCN)C(O)=O)=O)CS[C@@H]2C)=O)=O)CS[C@@H]1C NVNLLIYOARQCIX-MSHCCFNRSA-N 0.000 description 4
- 230000004075 alteration Effects 0.000 description 4
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- 230000005764 inhibitory process Effects 0.000 description 4
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- 235000010297 nisin Nutrition 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 241000238424 Crustacea Species 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 3
- 241000194036 Lactococcus Species 0.000 description 3
- 241000186781 Listeria Species 0.000 description 3
- 239000007984 Tris EDTA buffer Substances 0.000 description 3
- 239000007983 Tris buffer Substances 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 125000001475 halogen functional group Chemical group 0.000 description 3
- 230000002401 inhibitory effect Effects 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 230000001717 pathogenic effect Effects 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- ROWKJAVDOGWPAT-UHFFFAOYSA-N Acetoin Chemical compound CC(O)C(C)=O ROWKJAVDOGWPAT-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000206594 Carnobacterium Species 0.000 description 2
- 241000238557 Decapoda Species 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 2
- 241000192001 Pediococcus Species 0.000 description 2
- 241000269821 Scombridae Species 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
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- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 235000020640 mackerel Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000010899 nucleation Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 108091008146 restriction endonucleases Proteins 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000004475 Arginine Substances 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 102000016938 Catalase Human genes 0.000 description 1
- 108010053835 Catalase Proteins 0.000 description 1
- 206010013911 Dysgeusia Diseases 0.000 description 1
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- ODKSFYDXXFIFQN-BYPYZUCNSA-P L-argininium(2+) Chemical compound NC(=[NH2+])NCCC[C@H]([NH3+])C(O)=O ODKSFYDXXFIFQN-BYPYZUCNSA-P 0.000 description 1
- 241000186660 Lactobacillus Species 0.000 description 1
- 241000192132 Leuconostoc Species 0.000 description 1
- 102000016943 Muramidase Human genes 0.000 description 1
- 108010014251 Muramidase Proteins 0.000 description 1
- 108010062010 N-Acetylmuramoyl-L-alanine Amidase Proteins 0.000 description 1
- 102000004316 Oxidoreductases Human genes 0.000 description 1
- 108090000854 Oxidoreductases Proteins 0.000 description 1
- 108010059712 Pronase Proteins 0.000 description 1
- 241000277289 Salmo salar Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
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- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- ODKSFYDXXFIFQN-UHFFFAOYSA-N arginine Natural products OC(=O)C(N)CCCNC(N)=N ODKSFYDXXFIFQN-UHFFFAOYSA-N 0.000 description 1
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- 238000001879 gelation Methods 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002949 hemolytic effect Effects 0.000 description 1
- GFAZHVHNLUBROE-UHFFFAOYSA-N hydroxymethyl propionaldehyde Natural products CCC(=O)CO GFAZHVHNLUBROE-UHFFFAOYSA-N 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- PZOUSPYUWWUPPK-UHFFFAOYSA-N indole Natural products CC1=CC=CC2=C1C=CN2 PZOUSPYUWWUPPK-UHFFFAOYSA-N 0.000 description 1
- RKJUIXBNRJVNHR-UHFFFAOYSA-N indolenine Natural products C1=CC=C2CC=NC2=C1 RKJUIXBNRJVNHR-UHFFFAOYSA-N 0.000 description 1
- 229940039696 lactobacillus Drugs 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004325 lysozyme Substances 0.000 description 1
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- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
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- 239000006872 mrs medium Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
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- KSAVQLQVUXSOCR-UHFFFAOYSA-M sodium lauroyl sarcosinate Chemical compound [Na+].CCCCCCCCCCCC(=O)N(C)CC([O-])=O KSAVQLQVUXSOCR-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/14—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12
- A23B4/18—Preserving with chemicals not covered by groups A23B4/02 or A23B4/12 in the form of liquids or solids
- A23B4/20—Organic compounds; Microorganisms; Enzymes
- A23B4/22—Microorganisms; Enzymes; Antibiotics
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
- C12N1/205—Bacterial isolates
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2400/00—Lactic or propionic acid bacteria
- A23V2400/21—Streptococcus, lactococcus
- A23V2400/231—Lactis
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
- C12R2001/46—Streptococcus ; Enterococcus; Lactococcus
Definitions
- the present invention relates to a new strain of lactic acid bacteria, Lactococcus lactis species.
- This invention further relates to cultures, biomasses, extracts derived from this strain and their use in the preservation of food products.
- This invention also relates to compositions incorporating such a strain, to food products treated with such a strain and to methods of preserving such food products.
- the present invention is the result of studies carried out in the field of the preservation of food products, in particular seafood products packaged under vacuum or in a controlled atmosphere.
- Fresh fish is a particularly perishable food making its conservation difficult and limiting its distribution.
- the spoilage of fresh chilled fish is caused by the development of non-pathogenic microorganisms producing ammonia, amines, hydrogen sulphide ...
- Vacuum or modified atmosphere packaging does not completely inhibit this weathering flora, part of which is able to adapt to anaerobic conditions. This results in the development of unpleasant odors, which concentrate quickly, even before the taste of the fish is affected.
- the "sous-vide" and the modified atmosphere are however more and more appreciated modes of packaging because they combine the organoleptic and nutritional qualities of the fresh and a long shelf life.
- Boudreaux et al. in 1989 use living Lactobacillus cells having the particularity of not fermenting and capable of producing hydrogen peroxide to inhibit the spoilage flora and the pathogenic flora of packaged refrigerated foods (U.S. No. 4,874,704).
- hydroxygen peroxide is not very effective for fish and poses regulatory problems.
- Matrozza et al. (1989) add a mixture of Streptococcus lactis and Pediococcus based on non-viable cells to inhibit the psychrotrophic flora of refrigerated milk without obtaining a phenomenon of fermentation or growth of the lactic flora (US No. 4,880,743). This inhibition process is therefore based on the production of active molecules.
- Dr. Hall's team at Loughborough University tested different strains of lactic acid bacteria isolated from marine products to preserve minced whiting flesh. The addition of ferment (strains of Lactococcus or Carnobacterium) had no effect on the organoleptic qualities of the products nor on the inhibition of the spoilage flora.
- Lactic acid bacteria isolated from fish, exhibiting inhibitory activities vis-à-vis the spoilage flora of fish or monocytogenic strains of Listeria have been the subject of various studies (Stoffels et al., 1992; Pilet et al. , 1995; Leroi et al., 1996). The strains studied are all related to the genus Carnobacterium. A strain of Leuconostoc isolated from fish has also shown the ability to inhibit monocytogenic strains of Listeria (Jeppensen and Huss, 1993). However, these strains grow at 30 ° C. It is therefore impossible to separate the alteration flora from the strain during routine microbiological analyzes.
- An object of the present invention is to propose a new strain of lactic acid bacteria capable of delaying the development of bad odors on refrigerated food products preferably packaged in a controlled atmosphere or under vacuum and in inhibiting close germs as well as pathogenic germs for extend the shelf life of food products, particularly packaged seafood.
- Another object of the invention is to propose a new strain of lactic acid bacteria incapable of developing at 30 ° C. so as to allow the enumeration of the spoilage flora of food products within the framework of routine microbiological analyzes.
- the present invention provides a new strain of lactic acid bacteria, namely Lactococcus lactis suitable for use in the field of preserving food products, in particular seafood.
- strain Lactococcus lactis LLO A sample of the culture of the microorganism, in accordance with the invention, called strain Lactococcus lactis LLO, was deposited on September 11, 2001 under the Budapest Treaty in the national collection of culture of French microorganisms (CNCM), Institut Pasteur - 28 rue du Dondel Roux - 75724 PARIS CEDEX 15. The sample received the N ° CNCM I- 2716.
- CNCM French microorganisms
- cultures, biomasses and extracts obtained from the strain as mentioned above are also provided.
- this invention includes the strains of Lactococcus lactis obtained from mutation, variation, recombination of the strain Lactococcus lactis LLO.
- Another subject of the invention relates to the use of cultured strains, biomasses, extracts of Lactococcus lactis LLO for the preservation of food products as an agent delaying the appearance of bad odors or slowing down the development of spoilage flora. refrigerated food products, preferably packaged in a reduced oxygen atmosphere.
- Another subject of the invention relates to a food composition for the conservation in a refrigerated state of food products, in particular seafood products, preferably packaged under an atmosphere reduced in oxygen, characterized in that it comprises at least Lactococcus lactis LLO or a variant or mutant thereof.
- Another object of the invention relates to a food product stored in a refrigerated state and preferably packaged under an atmosphere reduced in oxygen, characterized in that said product has on its surface a biological barrier consisting at least of Lactococcus lactis LLO or d 'a variant or mutant thereof.
- Another object of the invention relates to a process for preserving in a refrigerated state food products, in particular seafood products, preferably packaged in an atmosphere reduced in oxygen before consumption, characterized in that it consists in putting in contact with the food product to be stored and Lactococcus lactis prior to packaging said product so as to form a biological barrier on the surface of said product which slows down the development of bad odors and the growth of the spoilage flora of said product.
- Lactococcus lactis LLO strain was isolated from refrigerated whiting fillets preserved in the presence of reduced oxygen content.
- the Lactococcus lactis LLO strain corresponds to the definition of a lactic acid bacteria. It is related to the genus Lactococcus species Lactis. Its metabolism in milk or fish stock does not produce any alteration phenomenon. It inhibits the alteration flora of whiting, salmon and crustaceans.
- the cells of the Lactococcus lactis LLO strain are ovoid, immobile. They appear in pairs or in chains.
- these cells are Gram positive, catalase negative, oxidase negative. They do not form spores. They are facultative anaerobic and have a fermentative metabolism.
- the fermentation of glucose is accompanied by a slight production of gas.
- the strain is however homofermentative. It belongs to the genus Lactococcus.
- the strain does not hydrolyze arginine, urea or starch does not produce indole or hydrogen sulfide and does not acidify milk. It does not reduce nitrates, it is hemolytic. It produces acetoin.
- the strain is psychrotrophic and develops between 2 and 25 ° C with a growth optimum close to 20 ° C. It is cultivated in the following culture media: MRS pH 6.5, Elliker, M17, Trypticase Soy agar with blood. It does not grow on the agar medium of ROGOSA, nor at 30 ° C. It develops on the flesh of refrigerated fish or crustaceans without adding an odor or an altered taste.
- the test is carried out on Mueller Hinton medium containing 1.7% agar and 5% horse blood, the pH is 7.3.
- the thickness of the agar in the petri dishes is constant, it is 4 mm. It is a standardized medium according to O.M.S.
- the LLO strain is cultivated in an MRS pH 6.5 broth for 48 to 36 hours at 15 ° C. until the stationary phase is obtained.
- the culture is diluted to 1/10 in a Mueller Hinton broth.
- the approximate concentration of the suspension is 10 6 bacteria / ml.
- the agar media are completely flooded with 2 ml of suspension. The excess liquid is removed and the dishes are left to dry for 10 minutes at room temperature. The antibiotic discs are deposited using forceps (4 maximum). The dishes are incubated at room temperature for 48 hours.
- a genetic identification was carried out by pulsed field electrophoresis after digestion of the genome with a restriction enzyme at rare sites.
- the bacterial biomass from 10 ml of culture (48 hours in MRS medium, 18 ° C) is recovered by centrifugation (10 min at 4000 g).
- the cell pellet is taken up in 10 ml of TE buffer (10 mM tris, 1 mM EDTA, pH 7.5) then homogenized with a vortex.
- the DO600 is then taken.
- Centrifuge (10 min at 4000 g) and the pellet is taken up in DO600 / 0.7 ml of T100E buffer (10 mM Tris, 100 mM EDTA, pH 7.5).
- the cell suspension is mixed V / V with an LMP (low melting point) agar (2% in TE). Leave to cool to 4 ° C and cut the plugs 1 mm thick.
- the plug is washed in 10 ml of TE buffer (20 min) and then the migration gel is loaded.
- the device used is a GeneLine (Beckman).
- the enzyme used is Apa I.
- the first column corresponds to 10 s of draw for 16 hours to identify large fragments.
- the second column corresponds to 7 s of draw for 16 hours to identify the intermediate fragments.
- the third column corresponds to 2 s of draw for 7 hours then 4 s of draw for 4 hours to identify small fragments.
- the migration buffer is 0.25 X TBE and the temperature is 12 ° C.
- the indicator strains were cultivated for 24 to 48 hours at 30 ° C. in M17 or MRS broth for lactic acid bacteria and in nutritive broth for non-lactic acid, before being sown in the same medium containing 1% agar.
- the final concentration in indicator strain is of the order of 10 7 CFU / ml.
- This agar maintained under supercooling at 46 ° C. is poured into a Petri dish onto an identical agar containing 1.2% of agar previously cooled. After gelation of the second layer, a drop of pellet of the strain "O" cultivated in M17 broth at 20 ° C for 3 days and washed in physiological water is placed on each agar. The dishes are incubated at 30 ° C.
- the sensitivity scale of the indicative strains vis-à-vis the LLO strain is established as follows:
- Halo of 1 mm around the deposit + Halo of 2 to 3 mm around the deposit: ++
- the LLO strain is inhibited by the nisin-producing strain Lactococcus lactis ATCC 11454.
- Whiting fillets were purchased from a fishmonger. Control fillets are stored in a bag and stored in the refrigerator at 5 ° C. The test nets are seeded with the LLO strain by spraying the LLO strain in suspension in physiological water before being stored in a second bag and stored at 5 ° C. On these two types of nets are carried out sensory analyzes and microbiological analyzes. Sensory analyzes are carried out using a control and test sample. The odor and taste after cooking of each sample are scored according to a scale of scores as follows:
- Microbiological analyzes are carried out in particular by counting aerobic mesophilic germs. The counts are made from a sample of 10 g of flesh suspended in 90 ml of sterile physiological water and homogenized for 3 minutes. This suspension is considered to be the parent suspension.
- the counts of aerobic mesophilic germs growing at 30 ° C in 3 days are made from dilutions to one tenth of the mother suspension using the deep counting technique.
- the culture medium is PCA agar, ordinary agar for enumeration in food microbiology.
- the LLO strain is counted on MRS agar pH 6.5 using the deep counting technique, the dishes are incubated for 5 days at 15 ° C.
- a composition comprising the Lactococcus lactis LLO strain or a variant or mutant thereof as a food composition for the preservation in a refrigerated state of food products.
- refrigeration is meant food products stored in a temperature range between about 0 ° C and 12 ° C.
- this strain does not develop at a temperature of 30 ° C. This allows a count of the flora of food products as part of routine microbiological analyzes. It is also noted that the effect of this strain is increased when it is applied to food products stored in an atmosphere reduced in oxygen.
- a control fresh salmon fillet is sliced into eight portions of 100 to 200 g, then wrapped in individual bags and put under vacuum before being stored in a cold room between 2 and 4 ° C.
- test sample is prepared in the same way except that it comprises between the slicing step and the packaging step a step of seeding by spraying with the LLO strain in suspension in water. physiological.
- sensory analyzes are carried out on the one hand, and microbiological examinations on the other.
- Sensory analyzes are carried out using a control and test sample. The color of the flesh is visually controlled. After opening the sachets, the smell is noted on a note scale. If necessary, the sample is cooked in simmering water for a few minutes before being scored again.
- the pH is measured at different points in the samples.
- the value retained is an average of 3 measurements.
- the counts are made from a sample of 10 g of flesh suspended in 90 ml of sterile physiological water and homogenized for 3 minutes. This suspension is considered to be the parent suspension.
- the counts of aerobic mesophilic germs growing at 30 ° C in 3 days are made from dilutions to one tenth of the mother suspension using the deep counting technique.
- the culture medium is PCA agar, ordinary agar for enumeration in food microbiology.
- the LLO strain is counted on MRS agar pH 6.5 using the deep counting technique, the dishes are incubated for 5 days at 15 ° C.
- control shrimps are packed in packs of ten in trays under modified atmosphere.
- the "test” shrimps are previously seeded with the LLO strain by spraying the LLO strain in suspension in physiological water. They are then packaged in sets of ten in trays under modified atmosphere and stored at 4 ° C.
- Sensory analyzes are carried out from a "control” and "test” sample.
- the color of the flesh is visually controlled.
- the taste is noted according to a scale of notes identical to that provided for the example of the salmon above.
- Counts are taken from a sample of 10 g of shrimp suspended in 90 ml of sterile physiological water and homogenized for 3 minutes. This suspension is considered to be the parent suspension.
- the counts of mesophilic germs, aerobic growing at 30 ° C in 3 days, are made from dilutions to one tenth of the mother suspension using the technique of deep counting.
- the culture medium is PCA agar, ordinary agar for enumeration in food microbiology.
- the LLO strain is counted on MRS agar pH 6.5 using the deep counting technique, the dishes are incubated for 5 days at 15 ° C.
- Lactococcus lactis LLO strain can be under
- This Lactococcus lactis LLO strain can still come in the form of a suspension.
- the food can be seeded also by spraying a powder incorporating the Lactococcus lactis LLO strain, or by spraying a cell suspension incorporating the above-mentioned strain, or by soaking the food in a bath containing the strain.
- the strain can be used alone or mixed with a support.
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Abstract
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60218063T DE60218063T2 (de) | 2001-09-21 | 2002-09-18 | Milchsäurebakterien der gattung lactococcus lactis und deren verwendung zur konservierung von nahrungsmitteln |
US10/489,352 US20040249129A1 (en) | 2001-09-21 | 2002-09-18 | Novel lactic bacteria of the genus lactococcus lactis and use thereof for preserving food products |
AU2002362549A AU2002362549A1 (en) | 2001-09-21 | 2002-09-18 | Novel lactic acid bacteria of the genus lactococcus lactis and use thereof for preserving food products |
CA002459481A CA2459481A1 (fr) | 2001-09-21 | 2002-09-18 | Souches de lactococcus lactis et leur application a la conservation de produits alimentaires |
EP02799423A EP1456350B1 (fr) | 2001-09-21 | 2002-09-18 | Bacteries lactiques du genre lactococcus lactis et leur application a la conservation de produits alimentaires |
NO20041169A NO330917B1 (no) | 2001-09-21 | 2004-03-19 | Nye melkesyrebakterier av slekten Lactococcus lactis og anvendelse derav, samt kulturer, materiale, matvareprodukt og fremgangsmate for konservering |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0112187A FR2830018B1 (fr) | 2001-09-21 | 2001-09-21 | Nouvelles bacteries lactiques du genre lactococcus lactis et leur application a la conservation de produits alimentaires |
FR01/12187 | 2001-09-21 |
Publications (2)
Publication Number | Publication Date |
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WO2003027268A2 true WO2003027268A2 (fr) | 2003-04-03 |
WO2003027268A3 WO2003027268A3 (fr) | 2004-01-22 |
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PCT/FR2002/003180 WO2003027268A2 (fr) | 2001-09-21 | 2002-09-18 | Souches de lactococcus lactis et leur application a la conservation de produits alimentaires |
Country Status (10)
Country | Link |
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US (1) | US20040249129A1 (fr) |
EP (1) | EP1456350B1 (fr) |
AT (1) | ATE353358T1 (fr) |
AU (1) | AU2002362549A1 (fr) |
CA (1) | CA2459481A1 (fr) |
DE (1) | DE60218063T2 (fr) |
ES (1) | ES2280616T3 (fr) |
FR (1) | FR2830018B1 (fr) |
NO (1) | NO330917B1 (fr) |
WO (1) | WO2003027268A2 (fr) |
Cited By (1)
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US11540988B2 (en) | 2018-02-09 | 2023-01-03 | The Procter & Gamble Company | Wet wipes comprising a lotion |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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ES2257964B1 (es) * | 2005-01-28 | 2007-08-01 | Universidad De Huelva | Metodo de preservacion de crustaceos frente a la melanosis. |
EP1962621B2 (fr) | 2005-11-21 | 2017-07-19 | Arla Foods Amba | Absorbant d'oxygene microbien |
FR3004725B1 (fr) | 2013-04-19 | 2016-01-08 | Ifremer | Utilisation de lactobacillus sakei pour la biopreservation des produits de la mer |
EP3013150A4 (fr) | 2013-06-27 | 2017-03-08 | Starbucks Corporation D/b/a Starbucks Coffee Company | Procédés de bioconservation pour des boissons et d'autres aliments |
KR102575766B1 (ko) * | 2020-10-20 | 2023-09-08 | 대한민국 | 락토코커스 속 미생물을 포함하는 악취 저감용 사료 조성물 |
Citations (1)
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WO2000060947A1 (fr) * | 1999-04-09 | 2000-10-19 | Danisco A/S | Nouvelles cultures protectrices et leur utilisation pour la conservation de denrees alimentaires |
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FR2745297B1 (fr) * | 1996-02-26 | 1998-05-22 | Lesaffre Dev | Utilisation d'une souche bacterienne pour la fabrication de l'acide formique ou du formiate et procede de fermentation utilisant cette souche |
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2001
- 2001-09-21 FR FR0112187A patent/FR2830018B1/fr not_active Expired - Fee Related
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2002
- 2002-09-18 ES ES02799423T patent/ES2280616T3/es not_active Expired - Lifetime
- 2002-09-18 AU AU2002362549A patent/AU2002362549A1/en not_active Abandoned
- 2002-09-18 US US10/489,352 patent/US20040249129A1/en not_active Abandoned
- 2002-09-18 WO PCT/FR2002/003180 patent/WO2003027268A2/fr active IP Right Grant
- 2002-09-18 AT AT02799423T patent/ATE353358T1/de not_active IP Right Cessation
- 2002-09-18 CA CA002459481A patent/CA2459481A1/fr not_active Abandoned
- 2002-09-18 DE DE60218063T patent/DE60218063T2/de not_active Expired - Lifetime
- 2002-09-18 EP EP02799423A patent/EP1456350B1/fr not_active Expired - Lifetime
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WO2000060947A1 (fr) * | 1999-04-09 | 2000-10-19 | Danisco A/S | Nouvelles cultures protectrices et leur utilisation pour la conservation de denrees alimentaires |
Non-Patent Citations (4)
Title |
---|
CHEN MEI-HUI ET AL: "Processing of low-salted mackerel fillets using biopreservative." JOURNAL OF THE FISHERIES SOCIETY OF TAIWAN, vol. 24, no. 4, décembre 1997 (1997-12), pages 327-336, XP001077037 ISSN: 0379-4180 cité dans la demande * |
FAR LACTIC ACID BACTERIA IN FISH PRESERVATION, [en ligne] 27 mars 2000 (2000-03-27), XP002199386 Extrait de l'Internet: <URL:http://exp.hispeed.com/flair/ffe14394 .htm> [extrait le 2002-05-13] * |
MAUGUIN S ET AL: "CHARACTERIZATION OF LACTIC ACID BACTERIA ISOLATED FROM SEAFOOD" JOURNAL OF APPLIED BACTERIOLOGY, OXFORD, GB, vol. 76, no. 6, 1994, pages 616-625, XP008020180 * |
WESSELS S ET AL: "SUITABILITY OF LACTOCOCCUS LACTIS SUBSP. LACTIS ATCC 11454 AS A PROTECTIVE CULTURE FOR LIGHTLY PRESERVED FISH PRODUCTS" FOOD MICROBIOLOGY, ACADEMIC PRESS LTD, LONDON, GB, vol. 13, no. 4, 1996, pages 323-332, XP000945352 ISSN: 0740-0020 cité dans la demande * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11540988B2 (en) | 2018-02-09 | 2023-01-03 | The Procter & Gamble Company | Wet wipes comprising a lotion |
Also Published As
Publication number | Publication date |
---|---|
DE60218063D1 (de) | 2007-03-22 |
FR2830018A1 (fr) | 2003-03-28 |
NO330917B1 (no) | 2011-08-15 |
DE60218063T2 (de) | 2007-08-23 |
ES2280616T3 (es) | 2007-09-16 |
NO20041169L (no) | 2004-05-03 |
FR2830018B1 (fr) | 2003-11-07 |
ATE353358T1 (de) | 2007-02-15 |
NO20041169D0 (no) | 2004-03-19 |
US20040249129A1 (en) | 2004-12-09 |
EP1456350A2 (fr) | 2004-09-15 |
WO2003027268A3 (fr) | 2004-01-22 |
EP1456350B1 (fr) | 2007-02-07 |
CA2459481A1 (fr) | 2003-04-03 |
AU2002362549A1 (en) | 2003-04-07 |
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