WO2022230476A1 - 乳酸球菌の増殖促進剤 - Google Patents
乳酸球菌の増殖促進剤 Download PDFInfo
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- WO2022230476A1 WO2022230476A1 PCT/JP2022/013938 JP2022013938W WO2022230476A1 WO 2022230476 A1 WO2022230476 A1 WO 2022230476A1 JP 2022013938 W JP2022013938 W JP 2022013938W WO 2022230476 A1 WO2022230476 A1 WO 2022230476A1
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- lactic acid
- medium
- growth
- acid
- dicarboxylic acid
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- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 title claims abstract description 206
- 239000004310 lactic acid Substances 0.000 title claims abstract description 103
- 235000014655 lactic acid Nutrition 0.000 title claims abstract description 103
- 239000007952 growth promoter Substances 0.000 title claims abstract description 14
- 241001478240 Coccus Species 0.000 title claims abstract description 13
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims abstract description 70
- 230000012010 growth Effects 0.000 claims abstract description 44
- 241000894006 Bacteria Species 0.000 claims abstract description 38
- 150000003839 salts Chemical class 0.000 claims abstract description 32
- 241000194036 Lactococcus Species 0.000 claims abstract description 13
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 8
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 7
- 239000001963 growth medium Substances 0.000 claims abstract description 7
- 239000004480 active ingredient Substances 0.000 claims abstract description 6
- 239000002609 medium Substances 0.000 claims description 98
- KPGXRSRHYNQIFN-UHFFFAOYSA-N 2-oxoglutaric acid Chemical compound OC(=O)CCC(=O)C(O)=O KPGXRSRHYNQIFN-UHFFFAOYSA-N 0.000 claims description 42
- 239000000284 extract Substances 0.000 claims description 38
- 235000013372 meat Nutrition 0.000 claims description 33
- 241000194035 Lactococcus lactis Species 0.000 claims description 26
- 235000014897 Streptococcus lactis Nutrition 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 23
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 22
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 239000001630 malic acid Substances 0.000 claims description 21
- 235000011090 malic acid Nutrition 0.000 claims description 21
- 238000012258 culturing Methods 0.000 claims description 20
- 230000001737 promoting effect Effects 0.000 claims description 17
- HWXBTNAVRSUOJR-UHFFFAOYSA-N alpha-hydroxyglutaric acid Natural products OC(=O)C(O)CCC(O)=O HWXBTNAVRSUOJR-UHFFFAOYSA-N 0.000 claims description 13
- 229940009533 alpha-ketoglutaric acid Drugs 0.000 claims description 13
- 239000006872 mrs medium Substances 0.000 description 14
- 238000007619 statistical method Methods 0.000 description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 12
- 241000186660 Lactobacillus Species 0.000 description 8
- 241000192001 Pediococcus Species 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 150000001991 dicarboxylic acids Chemical class 0.000 description 7
- 238000012136 culture method Methods 0.000 description 6
- 241001465754 Metazoa Species 0.000 description 5
- 230000001580 bacterial effect Effects 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 5
- 229940039696 lactobacillus Drugs 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000013630 prepared media Substances 0.000 description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- -1 Aliphatic dicarboxylic acids Chemical class 0.000 description 3
- 241000192132 Leuconostoc Species 0.000 description 3
- 241000192129 Leuconostoc lactis Species 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000012364 cultivation method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 125000001183 hydrocarbyl group Chemical group 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OXTNCQMOKLOUAM-UHFFFAOYSA-N 3-Oxoglutaric acid Chemical compound OC(=O)CC(=O)CC(O)=O OXTNCQMOKLOUAM-UHFFFAOYSA-N 0.000 description 2
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 2
- 241000194040 Lactococcus garvieae Species 0.000 description 2
- 241000194034 Lactococcus lactis subsp. cremoris Species 0.000 description 2
- 241000194041 Lactococcus lactis subsp. lactis Species 0.000 description 2
- 241000191998 Pediococcus acidilactici Species 0.000 description 2
- 241000500340 Pediococcus damnosus Species 0.000 description 2
- 241000194017 Streptococcus Species 0.000 description 2
- 235000014962 Streptococcus cremoris Nutrition 0.000 description 2
- 235000014969 Streptococcus diacetilactis Nutrition 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- 238000009630 liquid culture Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 230000035755 proliferation Effects 0.000 description 2
- 150000003628 tricarboxylic acids Chemical class 0.000 description 2
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 241000287828 Gallus gallus Species 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
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241001331799 Pediococcus cellicola Species 0.000 description 1
- 241001117188 Pediococcus claussenii Species 0.000 description 1
- 241001331797 Pediococcus ethanolidurans Species 0.000 description 1
- 241000186191 Pediococcus inopinatus Species 0.000 description 1
- 241000529920 Pediococcus parvulus Species 0.000 description 1
- 241000191996 Pediococcus pentosaceus Species 0.000 description 1
- 241000324734 Pediococcus stilesii Species 0.000 description 1
- 241000194020 Streptococcus thermophilus Species 0.000 description 1
- 238000000692 Student's t-test Methods 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- 238000010162 Tukey test Methods 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 230000003698 anagen phase Effects 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 235000015278 beef Nutrition 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- WPUMTJGUQUYPIV-JIZZDEOASA-L disodium (S)-malate Chemical compound [Na+].[Na+].[O-]C(=O)[C@@H](O)CC([O-])=O WPUMTJGUQUYPIV-JIZZDEOASA-L 0.000 description 1
- YBGBJYVHJTVUSL-UHFFFAOYSA-L disodium;2-oxopentanedioate Chemical compound [Na+].[Na+].[O-]C(=O)CCC(=O)C([O-])=O YBGBJYVHJTVUSL-UHFFFAOYSA-L 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 238000001543 one-way ANOVA Methods 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 125000004043 oxo group Chemical group O=* 0.000 description 1
- 235000015277 pork Nutrition 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000019265 sodium DL-malate Nutrition 0.000 description 1
- 239000001394 sodium malate Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical compound C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
-
- 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
-
- 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
- C12N1/38—Chemical stimulation of growth or activity by addition of chemical compounds which are not essential growth factors; Stimulation of growth by removal of a chemical compound
-
- 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
-
- 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 growth promoter for lactic acid cocci.
- the present invention also relates to a culture medium for lactic acid cocci, a method for culturing lactic acid cocci, and a method for promoting the growth of lactic acid cocci.
- LB medium and MRS medium are generally used for culturing lactic acid bacteria. However, depending on the type of medium, sufficient growth of lactic acid cocci could not be obtained in some cases.
- Patent Document 1 and Patent Document 2 have been known as methods for efficiently culturing lactic acid cocci.
- the purpose of the present invention is to provide a novel growth-promoting agent for lactic acid bacteria.
- Another object of the present invention is to provide a novel culture medium for lactic acid cocci, a novel method for culturing lactic acid cocci, and a novel method for promoting growth of lactic acid cocci.
- the present inventors found that in culturing lactic acid cocci, the growth of lactic acid cocci was promoted by including a dicarboxylic acid or a salt thereof in the medium.
- the present invention is based on this finding.
- a growth-promoting agent for lactic acid bacteria comprising a dicarboxylic acid and/or a salt thereof as an active ingredient.
- the dicarboxylic acid and/or its salt is one or more selected from the group consisting of malic acid, ⁇ -ketoglutaric acid and salts thereof. Proliferation promoter.
- a medium for lactic acid bacteria containing a dicarboxylic acid and/or a salt thereof containing a dicarboxylic acid and/or a salt thereof at a concentration of 0.01 to 8% by mass.
- the medium according to [8] or [9] above which is substantially free of meat extract.
- a method for culturing lactic acid cocci comprising the step of culturing lactic acid cocci in the medium according to any one of [8] to [10] above.
- a method for promoting the growth of lactic acid cocci comprising adding a dicarboxylic acid and/or a salt thereof to a culture medium for lactic acid cocci.
- the growth of lactic acid cocci can be promoted by culturing lactic acid cocci in a medium containing a dicarboxylic acid or a salt thereof, so that lactic acid cocci can be cultured simply and efficiently.
- the present invention is also advantageous in that the growth of lactic acid cocci can be promoted by including dicarboxylic acid or a salt thereof even in a medium containing no animal meat extract.
- FIG. 1 shows the amount of Lactococcus lactis subspecies lactis at each concentration when ⁇ -ketoglutarate or its salt or malic acid was added to MRS medium under anaerobic culture conditions (FIG. 1A: ⁇ - ketoglutarate ( ⁇ KG), Figure 1B: ⁇ -ketoglutarate disodium salt ( ⁇ KG2Na), Figure 1C: malic acid).
- a control shows the case of no addition of dicarboxylic acid.
- FIG. 2 shows the amount of Lactococcus lactis subspecies lactis at each concentration when ⁇ -ketoglutarate or malic acid was added to the MRS medium under aerobic culture conditions (FIG. 2A: ⁇ -ketoglutarate acid ( ⁇ KG), FIG.
- FIG. 2B malic acid
- a control shows the case of no addition of dicarboxylic acid.
- FIG. 3 shows the amount of lactic acid bacteria at each concentration when ⁇ -ketoglutarate ( ⁇ KG) or malic acid was added to GM17 medium under anaerobic culture conditions.
- a control shows the case of no addition of dicarboxylic acid.
- FIG. 4 shows the amount of Lactococcus lactis subspecies lactis at each concentration when ⁇ -ketoglutarate or malic acid was added to GM17 medium under aerobic culture conditions (FIG. 4A: ⁇ -ketoglutarate acid ( ⁇ KG), FIG. 4B: malic acid).
- a control shows the case of no addition of dicarboxylic acid.
- FIG. 4A ⁇ -ketoglutarate acid ( ⁇ KG)
- FIG. 4B malic acid
- FIG. 5 shows the amount of various lactic acid cocci at each concentration when ⁇ -ketoglutarate ( ⁇ KG) was added to the MRS medium under anaerobic culture conditions.
- a control shows the case of no addition of dicarboxylic acid.
- FIG. 6 shows the amount of Lactobacillus lactobacillus at each concentration when ⁇ -ketoglutarate ( ⁇ KG) was added to the MRS medium under anaerobic culture conditions.
- a control shows the case of no addition of dicarboxylic acid.
- FIG. 7 shows the amount of Lactococcus lactis subspecies lactis at each concentration when citric acid was added to the MRS medium under anaerobic culture conditions. The control shows the case without citric acid addition.
- FIG. 8 shows the amount of Pediococcus lactococcus at each concentration when ⁇ -ketoglutarate ( ⁇ KG) or malic acid was added to the MRS medium under anaerobic culture conditions.
- a control shows the case of no addition of dicarboxylic acid.
- FIG. 9 shows the amount of various lactic acid cocci at each concentration when ⁇ -ketoglutarate ( ⁇ KG) was added to MRS medium containing no meat extract under anaerobic culture conditions.
- a control shows the case of no addition of dicarboxylic acid.
- FIG. 10 shows the amount of various lactic acid cocci in a medium containing no meat extract (no meat extract) and a medium containing meat extract (with meat extract) under anaerobic culture conditions.
- the growth promoter of the present invention can be used for culturing lactic acid cocci.
- Lactococci to be targeted for growth promotion are not particularly limited, but examples include the genus Lactococcus, the genus Leuconostoc, the genus Pediococcus, the genus Streptococcus, and the like. of lactic acid bacteria.
- Lactococci of the genus Lactococcus include, for example, Lactococcus lactis , Lactococcus lactis subsp. lactis , Lactococcus garvieae , and Lactococcus lactis. Lactococcus lactis subsp. cremoris, Lactococcus lactis subsp . cremoris , and the like, preferably Lactococcus lactis subspecies lactis.
- Lactococcus bacteria include, for example, Lactococcus lactis subspecies lactis JCM5805, Lactococcus lactis subspecies lactis NBRC12007, Lactococcus lactis subspecies lactis NRIC1150, Lactococcus lactis subspecies lactis JCM20101, Lactococcus lactis subspecies lactis JCM7638, Lactococcus lactis subspecies lactis ATCC11454, Lactococcus garviae NBRC100934, Lactococcus lactis subspecies cremoris JCM16167, Lactococcus lactis JCM16167 Subspecies cremoris NBRC100676, Lactococcus lactis subspecies Holdoniae JCM1180 and Lactococcus lactis subsp.
- Lactococcus lactis subspecies lactis JCM5805 Lactococcus lactis subspecies lactis NBRC12007
- Leuconostoc bacteria include, for example, Leuconostoc lactis.
- Specific examples of Leuconostoc bacteria include, for example, Leuconostoc lactis NBRC12455.
- Pediococcus bacteria include, for example, Pediococcus acidilactici , Pediococcus pentosaceus , Pediococcus cellicola , Pediococcus claussenii ), Pediococcus damnosus , Pediococcus ethanolidurans , Pediococcus inopinatus , Pediococcus parvulus , Pediococcus sti Lessy ( Pediococcus stilesii ) and the like.
- Specific examples of Pediococcus bacteria include Pediococcus acidilactici JCM8797, Pediococcus Damnosus JCM5886, and the like.
- Streptococcus bacteria examples include Streptococcus thermophilus.
- the JCM strain is from the RIKEN BioResource Center Microbial Material Development Office (3-1-1 Takanodai, Tsukuba City, Ibaraki Prefecture), and the NBRC strain is from the Independent Administrative Agency Product Evaluation Technology Platform
- the NRIC strain is from the Tokyo University of Agriculture, Strain Storage Room (1-1-1 Sakuragaoka, Setagaya-ku, Tokyo), the ATCC strain are available from the American type culture collection (USA), respectively.
- Lactococcus lactis subspecies lactis JCM5805 strain can be obtained from RIKEN/BioResource Center/Microbial Material Development Office as described above, but in the present invention, it is stored in places other than RIKEN/BioResource Center/Microbial Material Development Office.
- An institutionally archived identical strain of JCM5805 strain can be used. Specifically, the same strain of the JCM5805 strain was transferred to the National Institute of Technology and Evaluation, Biological Resources Division (2-5-8 Kazusa Kamatari, Kisarazu City, Chiba Prefecture), Tokyo University of Agriculture, Strain Storage Room (Tokyo). 1-1-1 Sakuragaoka, Setagaya-ku) and the American Type Culture Collection (USA).
- the dicarboxylic acid which is the active ingredient of the growth-promoting agent of the present invention, is not particularly limited as long as it is a compound having two carboxy groups in its structure, but preferably an aliphatic dicarboxylic acid can be used.
- the hydrocarbon chains that make up the aliphatic dicarboxylic acid are preferably saturated hydrocarbon chains.
- the aliphatic dicarboxylic acid in the present invention is preferably an aliphatic dicarboxylic acid having 4 to 6 carbon atoms, more preferably an aliphatic dicarboxylic acid having 4 or 5 carbon atoms.
- aliphatic dicarboxylic acids having 4 to 6 carbon atoms include ketoglutaric acid ( ⁇ -ketoglutaric acid (hereinafter sometimes referred to as “ ⁇ KG”), ⁇ -ketoglutaric acid (acetonedicarboxylic acid)), apple acid, adipic acid, oxalic acid, succinic acid, maleic acid, glutaric acid, etc., preferably ⁇ -ketoglutaric acid and/or malic acid.
- the dicarboxylic acid may be in the form of salts, such as metal salts and ammonium salts.
- metal salts include alkali metal salts such as sodium salts and potassium salts.
- Ammonium salts include salts such as ammonium and tetramethylammonium.
- dicarboxylic acid salts include sodium ⁇ -ketoglutarate and sodium malate.
- the proliferation-promoting agent of the present invention can contain either or both of a dicarboxylic acid and a salt thereof as an active ingredient.
- the lower limit (or more or more) of the concentration (solid content concentration) of the dicarboxylic acid and/or its salt in the medium is 0.01% by mass, 0.1% by mass, 0.25% by mass, and 0.5% by mass. and its upper limit (below or below) can be 8% by mass, 4% by mass, or 2% by mass. These lower and upper limits can be combined arbitrarily.
- the concentration range of the dicarboxylic acid and/or its salt in the medium is, for example, 0.01 to 8% by mass, 0.1 to 4% by mass, 0.25 to 4% by mass, 0.5 to 4% by mass. , 0.5 to 3 mass %, 0.5 to 2 mass %.
- the growth-promoting agent of the present invention promotes the growth of lactic acid cocci and efficiently cultures lactic acid cocci by setting the concentration of the dicarboxylic acid in the medium to the concentration range described above. be able to.
- the growth promoter of the present invention can be used by adding it to a medium for culturing lactic acid cocci.
- the medium that can be used in the present invention is not particularly limited as long as it is a medium used for culturing lactic acid bacteria, and examples thereof include MRS medium (deMan, Rogosa, & Sharpe medium), M17 medium, LB medium, and the like.
- the growth-promoting agent of the present invention may be added to the medium during culturing of the lactic acid cocci, or may be added in advance before the culturing of the lactic acid cocci.
- the medium that can be used in the present invention can contain a meat extract as a supplementary nutritional ingredient. Livestock meat extracts include, for example, beef extract, pork extract, and chicken extract.
- the medium that can be used in the present invention preferably contains substantially no meat extract, and more preferably does not contain meat extract, from the viewpoints of environmental load, cost, food safety, and the like.
- substantially free of meat extract means that the content of meat extract is less than 0.8% by mass, less than 0.5% by mass, less than 0.3% by mass, or less than 0.1% by mass, for example. less than, less than 0.05% by mass, or less than 0.01% by mass.
- the properties of the meat extract to be used include liquid extract, powder, granules, and the like.
- the content of the meat extract in the medium is calculated by dividing the mass of the solid content, which is the extract pure content of the meat extract, by the mass of the medium and multiplying the result by 100.
- the medium containing no animal meat extract can be appropriately prepared without using any animal meat extract as a raw material for the medium exemplified above.
- the growth-promoting agent of the present invention can be used by adding it to a medium containing no meat extract.
- the conditions for culturing lactic acid cocci using the medium supplemented with the growth-promoting agent of the present invention are not particularly limited, and normal culturing conditions for lactic acid cocci can be applied.
- the culture period for lactic acid cocci can be 20 to 48 hours, preferably 20 to 30 hours from the viewpoint of the growth phase.
- the lower limit (above or above) of the culture temperature for lactic acid cocci can be 20°C, 25°C and 28°C, and the upper limit (below or below) can be 40°C, 35°C and 30°C. .
- These lower and upper limits can be arbitrarily combined, and the culture temperature range is, for example, 20 to 40°C, 20 to 35°C, 25 to 35°C, 30 to 35°C, most preferably about 30°C. can be
- the culture of lactococcus may be liquid culture or solid culture.
- Liquid culture can be performed using a fermenter in which the conditions can be controlled.
- Cultivation may be under either anaerobic or aerobic conditions.
- the stirring speed and the amount of aeration are appropriately selected according to the type of microbial cells and culture conditions.
- the pH of the medium used in the present invention may be in the range of 6.0 to 6.7 as long as it does not affect the growth of lactic acid cocci.
- the pH of the medium can be appropriately adjusted, for example, by adding a base such as sodium hydroxide or an acid such as phosphoric acid to the medium.
- a culture of lactic acid cocci is obtained by culturing lactic acid cocci in a medium supplemented with the growth promoting agent of the present invention.
- the obtained lactic acid coccus culture can be added to foods and drinks as it is or after processing such as concentration, dilution, drying, isolation and purification. That is, the growth-promoting agent of the present invention can be used to promote the growth of lactic acid bacteria for the purpose of application to food and drink. It can be used as an active ingredient.
- a medium for lactic acid bacteria containing dicarboxylic acid and/or its salt is provided.
- the culture medium for lactic acid bacteria of the present invention can be carried out according to the description regarding the growth promoter of the present invention.
- the medium for lactic acid cocci of the present invention is advantageous in that it promotes the growth of lactic acid cocci and enables efficient cultivation of lactic acid cocci.
- a method for culturing lactic acid cocci comprising the step of culturing lactic acid cocci in the medium of the present invention.
- the culture method of the present invention can be carried out according to the description regarding the growth-promoting agent of the present invention and the medium of the present invention.
- a method for promoting the growth of lactic acid cocci comprising adding a dicarboxylic acid and/or a salt thereof to a culture medium for lactic acid cocci.
- the proliferation-promoting method of the present invention can be carried out according to the description regarding the proliferation-promoting agent of the present invention.
- the use of a dicarboxylic acid and/or a salt thereof as an agent for promoting the growth of lactic acid cocci, for promoting the growth of lactic acid cocci, or in the method for promoting the growth of lactic acid cocci of the present invention is provided.
- the use of the present invention can be carried out according to the description of the proliferation-promoting agents and methods of the present invention.
- Example 1 Examination of growth promoting effect of dicarboxylic acid on lactic acid bacteria (1) In Example 1, the growth promoting effect of dicarboxylic acid on lactic acid bacteria was examined.
- Aerobic culture MRS medium was used as the medium.
- dicarboxylic acids ⁇ -ketoglutaric acid, disodium ⁇ -ketoglutarate, and malic acid were added to the medium at concentrations (0.5 to 2.0% by mass) shown in FIG.
- Sodium hydroxide was added to reach the same pH (pH 6.2 ⁇ 0.2).
- inoculation seeding was performed so that the concentration of the bacterial cells was 0.1% (v / v) with respect to 10 ml of the medium, and the inoculated medium was used in an automatic culture search device OT-201 (Oriental Instruments Co., Ltd.). It may be referred to as a “bioplotter” in this specification) and cultured at 30° C. for 24 hours (stirring strength condition: Medium).
- Bacterial count measurement The bacterial count was measured by measuring the OD600 (turbidity) of the medium using an absorbance meter (Biochrom GeneQuant1300).
- lactic acid cocci was significant in a concentration-dependent manner in the medium supplemented with ⁇ KG (Fig. 2A) and malic acid (Fig. 2B) compared to the control (dicarboxylic acid-free medium). It was confirmed that Similarly, it was confirmed that the addition of either a dicarboxylic acid or a salt thereof to a medium containing no meat extract promoted the growth of lactic acid cocci.
- Example 2 Examination of growth promoting effect of dicarboxylic acid on lactic acid bacteria (2)
- a medium different from the medium used in Example 1 was used to examine the growth promoting effect of dicarboxylic acid on lactic acid cocci.
- M17 medium (Difco M17 Broth, BD, the composition is shown in Table 2, the same applies hereinafter) to which 20 g / L of glucose was added (herein Sometimes referred to as "GM17 medium") was used.
- GM17 medium 20 g / L of glucose was added
- ⁇ -Ketoglutaric acid and malic acid as dicarboxylic acids were added to the medium at concentrations (0.5 to 2% by mass) shown in FIG. was added (pH 6.5 ⁇ 0.2).
- inoculate seed
- FALCON 15 ml conical tube
- concentration of the cells 0.1% (v / v) with respect to 10 ml of the prepared medium
- place in an incubator Tokyo Rikakikaisha ) at 30° C. for 24 hours (static culture).
- Aerobic Culture A GM17 medium was used. ⁇ -Ketoglutaric acid and malic acid as dicarboxylic acids were added to the medium at concentrations (0.5 to 2% by mass) shown in FIG. was added (pH 6.5 ⁇ 0.2). Next, inoculation (seeding) was performed so that the concentration of the bacterial cells was 0.1% (v / v) with respect to 10 ml of the prepared medium, and the inoculated medium was used with an automatic culture search device OT-201 (Oriental Instruments). Co., Ltd., sometimes referred to as “bioplotter” in this specification) and cultured at 30° C. for 24 hours (stirring strength condition: Medium).
- Example 3 Examination of growth promoting effect of dicarboxylic acid on lactic acid bacteria (3) In Example 3, the growth-promoting effect of ⁇ -ketoglutaric acid on various lactic acid cocci was examined.
- Example 4 Examination of growth-promoting effect of lactobacillus by dicarboxylic acid (4) In Example 4, the growth-promoting effect of ⁇ -ketoglutaric acid on lactobacilli belonging to the genus Lactobacillus was examined.
- Example 5 Examination of growth-promoting effect of tricarboxylic acid on lactic acid cocci
- Example 5 the growth-promoting effect of tricarboxylic acid on lactic acid coccus was investigated.
- Example 6 Examination of growth promoting effect of dicarboxylic acid on lactic acid bacteria (4) In Example 6, the growth-promoting effect of dicarboxylic acids on lactococcus of the genus Pediococcus was examined.
- FIG. 8A (0.1 to 4% by mass) and FIG. 8C (1 to 4% by mass)
- FIG. 8B 0.1 to 2% by mass
- FIG. 8D concentration shown in FIG. 8D (1 to 2% by mass)
- Example 7 Examination of growth-promoting effect of dicarboxylic acid on lactic acid bacteria (5) In Example 7, the growth promoting effect of dicarboxylic acid on lactic acid cocci was examined in a medium containing no meat extract.
- the medium used was an MRS medium adjusted to the composition shown in Table 7 (adjusted to pH 6.2 by adding phosphoric acid).
- ⁇ -Ketoglutaric acid was added to the medium at a concentration of 2.0% by mass as a dicarboxylic acid, and sodium hydroxide was added so that the pH was the same as the control (dicarboxylic acid-free medium) (pH 6.2 ⁇ 0.2).
- Example 8 Examination of the effect of the meat extract in the medium on the growth of lactic acid cocci In Example 8, the effect of the meat extract in the medium on the growth of lactic acid cocci was examined.
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Abstract
Description
[1]ジカルボン酸および/またはその塩を有効成分として含んでなる、乳酸球菌の増殖促進剤。
[2]ジカルボン酸が炭素数4~6の脂肪族ジカルボン酸である、上記[1]に記載の増殖促進剤。
[3]ジカルボン酸および/またはその塩が、リンゴ酸、α-ケトグルタル酸およびそれらの塩からなる群から選択される1種または2種以上である、上記[1]または[2]に記載の増殖促進剤。
[4]乳酸球菌がラクトコッカス属細菌である、上記[1]~[3]のいずれかに記載の増殖促進剤。
[5]乳酸球菌がラクトコッカス・ラクティス・サブスピーシーズ・ラクティスJCM5805である、上記[1]~[4]のいずれかに記載の増殖促進剤。
[6]ジカルボン酸および/またはその塩を培地において0.01~8質量%の濃度で使用する、上記[1]~[5]のいずれかに記載の増殖促進剤。
[7]畜肉エキスを実質的に含まない培地に添加する、上記[1]~[6]のいずれかに記載の増殖促進剤。
[8]ジカルボン酸および/またはその塩を含有する、乳酸球菌用培地。
[9]ジカルボン酸および/またはその塩を0.01~8質量%の濃度で含有する、上記[8]に記載の培地。
[10]畜肉エキスを実質的に含まない、上記[8]または[9]に記載の培地。
[11]上記[8]~[10]のいずれかに記載の培地で乳酸球菌を培養する工程を含む、乳酸球菌の培養方法。
[12]乳酸球菌の培地にジカルボン酸および/またはその塩を添加する工程を含む、乳酸球菌の増殖促進方法。
[13]乳酸球菌の増殖促進剤としての、ジカルボン酸および/またはその塩の使用。
例1では、ジカルボン酸による乳酸球菌に対する増殖促進効果について検討した。
ア 菌体
乳酸球菌にはラクトコッカス・ラクティス・サブスピーシーズ・ラクティス JCM5805菌株(Lactococcus lactis subsp. lactis)を用いた。
(i)嫌気的培養
培地はMRS培地(MRS BROTH、CODE:CM0359、Oxoid社、組成は表1に示す、本明細書の例3~6において同じ)を使用した。ジカルボン酸としてα-ケトグルタル酸(富士フィルム和光純薬社)、α-ケトグルタル酸二ナトリウム(本明細書中、「αKG2Na」ということがある)(富士フィルム和光純薬社)およびリンゴ酸(東京化成工業社)を図1に示す濃度(0.01~4.0質量%)で培地にそれぞれ添加し、対照(ジカルボン酸無添加培地)と同じpHになるように水酸化ナトリウムを添加した(pH6.2±0.2)。次に、15mlコニカルチューブ(FALCON)中で、菌体の濃度が調製した培地10mlに対して0.1%(v/v)となるように植菌(播種)し、インキュベーター(東京理化器械社)において30℃で24時間培養した(静置培養)。
培地はMRS培地を使用した。ジカルボン酸としてα-ケトグルタル酸、α-ケトグルタル酸二ナトリウムおよびリンゴ酸を図2に示す濃度(0.5~2.0質量%)で培地にそれぞれ添加し、対照(ジカルボン酸無添加培地)と同じpHになるように水酸化ナトリウムを添加した(pH6.2±0.2)。次に、菌体の濃度が培地10mlに対して0.1%(v/v)となるように植菌(播種)し、植菌した培地を自動培養探索装置OT-201(オリエンタルインスツルメンツ社、本明細書中「バイオプロッター」ということがある)に供し、30℃で24時間培養した(攪拌強度条件:Medium)。
菌数の測定は吸光度計(Biochrom GeneQuant1300)を用いて培地のOD600(濁度)を測定することにより行った。
測定値は平均値±標準誤差で表した。一元配置分散分析を行った後にTukey検定を行い、対照群に対してp<0.05の場合に有意差ありとした。
結果は、図1および図2に示す通りであった。嫌気的培養では、対照(ジカルボン酸無添加培地)に対して、αKG(図1A)およびリンゴ酸(図1C)を添加した培地において、濃度依存的に乳酸球菌の増殖が有意に促進されることが確認された。また、対照(ジカルボン酸無添加培地)に対して、αKG2Na(図1B)を添加した培地では、0.1~4質量%の場合に濃度依存的に乳酸球菌の増殖が有意に促進されることが確認され、0.01質量%の場合も乳酸球菌の増殖が促進される傾向にあった。同様に、好気的培養においても、対照(ジカルボン酸無添加培地)に対して、αKG(図2A)およびリンゴ酸(図2B)を添加した培地において、濃度依存的に乳酸球菌の増殖が有意に促進されることが確認された。同様に、畜肉エキスを含まない培地にジカルボン酸およびその塩のいずれを添加した場合にも乳酸球菌の増殖が促進されることが確認された。
例2では、例1で用いた培地とは異なる培地を用いてジカルボン酸による乳酸球菌に対する増殖促進効果について検討した。
ア 菌体
例1(1)アに記載の乳酸球菌を用いた。
(i)嫌気的培養
培地はM17培地(Difco M17 Broth、BD社、組成は表2に示す、本明細書において以下同じ)に20g/Lのグルコースを添加した培地(本明細書中「GM17培地」ということがある)を使用した。ジカルボン酸としてα-ケトグルタル酸およびリンゴ酸を図3に示す濃度(0.5~2質量%)で培地にそれぞれ添加し、対照(ジカルボン酸無添加培地)と同じpHになるように水酸化ナトリウムを添加した(pH6.5±0.2)。次に、15mlコニカルチューブ(FALCON)中で、菌体の濃度が調製した培地10mlに対して0.1%(v/v)となるように植菌(播種)し、インキュベーター(東京理化器械社)において30℃で24時間培養した(静置培養)。
培地はGM17培地を使用した。ジカルボン酸としてα-ケトグルタル酸およびリンゴ酸を図4に示す濃度(0.5~2質量%)で培地にそれぞれ添加し、対照(ジカルボン酸無添加培地)と同じpHになるように水酸化ナトリウムを添加した(pH6.5±0.2)。次に、菌体の濃度が調製した培地10mlに対して0.1%(v/v)となるように植菌(播種)し、植菌した培地を自動培養探索装置OT-201(オリエンタルインスツルメンツ社、本明細書中「バイオプロッター」ということがある)に供し、30℃で24時間培養した(攪拌強度条件:Medium)。
例1(1)ウの記載と同様にして行った。
例1(1)エの記載と同様にして行った。
結果は、図3および図4に示す通りであった。嫌気的培養では、対照(ジカルボン酸無添加培地)に対して、αKG(図3A)およびリンゴ酸(図3B)を添加した培地において、乳酸球菌の増殖が有意に促進されることが確認された。同様に、好気的培養においても、対照(ジカルボン酸無添加培地)に対して、αKG(図4A)およびリンゴ酸(図4B)を添加した培地において、濃度依存的に乳酸球菌の増殖が促進されることが確認された。例1および例2の結果から、培地の種類によらずジカルボン酸により乳酸球菌の増殖が有意に促進されることが確認された。
例3では、α-ケトグルタル酸による各種乳酸球菌に対する増殖促進効果について検討した。
ア 菌体
菌体には表1に記載の乳酸球菌を用いた。
ジカルボン酸としてα-ケトグルタル酸を2.0質量%の濃度で培地に添加したこと以外は例1(1)イ(i)の記載と同様にして行った(嫌気的培養)。
例1(1)ウの記載と同様にして行った。
測定値は平均値±標準誤差で表した。Student-t検定を行い、対照群に対してp<0.05の場合に有意差ありとした。
結果は、図5に示す通りであった。ラクトコッカス・ガルビエアエ、ラクトコッカス・ラクティス・サブスピーシーズ・クレモリス、ラクトコッカス・ラクティス・サブスピーシーズ・ホールドニアエ、ラクトコッカス・ラクティス・サブスピーシーズ・ラクティスおよびロイコノストック・ラクティスの乳酸球菌は、対照(ジカルボン酸無添加培地)に対して、菌株によらずジカルボン酸により増殖が有意に促進されることが確認された。
例4では、α-ケトグルタル酸によるラクトバチルス属の乳酸桿菌の増殖促進効果について検討した。
ア 菌体
菌体には表2に記載のラクトバチルス属の乳酸桿菌を用いた。
ジカルボン酸としてα-ケトグルタル酸を図6に示す濃度(0.5~2質量%)で培地にそれぞれ添加したこと以外は例1(1)イ(i)の記載と同様にして行った(嫌気的培養)。
例1(1)ウの記載と同様にして行った。
例1(1)エの記載と同様にして行った。
結果は、図6に示す通りであった。ラクトバチルス属の乳酸桿菌は、対照(ジカルボン酸無添加培地)に対して、ジカルボン酸による増殖促進は認められなかった。
例5では、トリカルボン酸による乳酸球菌に対する増殖促進効果について検討した。
ア 菌体
例1(1)アに記載の乳酸球菌と同様のものを用いた。
培地にジカルボン酸の代わりにトリカルボン酸としてクエン酸(富士フィルム和光純薬社)を図7に示す濃度(0.25~1質量%)で培地にそれぞれ添加したこと以外は例1(1)イ(i)の記載と同様にして行った(嫌気的培養)。
例1(1)ウの記載と同様にして行った。
例1(1)エの記載と同様にして行った。
結果は、図7に示す通りであった。乳酸球菌は、対照(クエン酸無添加培地)に対して、クエン酸により増殖が有意に促進することが確認されたが、増殖促進の効果の程度はジカルボン酸の方が大きかった。
例6では、ジカルボン酸によるペディオコッカス属の乳酸球菌に対する増殖促進効果について検討した。
ア 菌体
菌体には表5に記載のペディオコッカス属の乳酸球菌を用いた。
ジカルボン酸としてα-ケトグルタル酸(図8A(0.1~4質量%)および図8C(1~4質量%)に示す濃度)およびリンゴ酸(図8B(0.1~2質量%)および図8D(1~2質量%)に示す濃度)で培地にそれぞれ添加したこと以外は例1(1)イ(i)の記載と同様にして行った(嫌気的培養)。
例1(1)ウの記載と同様にして行った。
例1(1)エの記載と同様にして行った。
結果は、図8に示す通りであった。ペディオコッカス属の乳酸球菌は、対照(ジカルボン酸無添加培地)に対して、αKG(図8AおよびC)およびリンゴ酸(図8BおよびD)を添加した培地において、濃度依存的に有意に増殖が促進されることが確認された。
例7では、畜肉エキスを含まない培地において、ジカルボン酸による乳酸球菌に対する増殖促進効果について検討した。
ア 菌体
菌体には表6に記載の乳酸球菌を用いた。
培地は表7に示す組成にて調整したMRS培地を使用した(リン酸を添加してpH6.2に調整した)。ジカルボン酸としてα-ケトグルタル酸を2.0質量%の濃度で培地に添加し、対照(ジカルボン酸無添加培地)と同じpHになるように水酸化ナトリウムを添加した(pH6.2±0.2)。次に、15mlコニカルチューブ(FALCON)中で、菌体の濃度が調製した培地10mlに対して0.1%(v/v)となるように植菌(播種)し、インキュベーター(東京理化器械社)において30℃で24時間培養した(静置培養)。
例1(1)ウの記載と同様にして行った。
例1(1)エの記載と同様にして行った。
結果は、図9に示す通りであった。畜肉エキスを含まない培地においても、ジカルボン酸の添加によりラクトコッカス・ラクティス・サブスピーシーズ・ラクティス、ラクトコッカス・ガルビエアエ、ラクトコッカス・ラクティス・サブスピーシーズ・クレモリス、ラクトコッカス・ラクティス・サブスピーシーズ・ホールドニアエおよびロイコノストック・ラクティスの乳酸球菌は、対照(ジカルボン酸無添加培地)に対して、増殖が有意に促進されることが確認された。
例8では、培地中の畜肉エキスが乳酸球菌の増殖に与える影響について検討した。
ア 菌体
菌体には表8に記載の乳酸球菌を用いた。
畜肉エキスを含まない培地は、表7に示す組成にて調整したMRS培地を使用した(初期pHが7.0程度であったためリン酸を添加してpH6.2に調整した)。畜肉エキスを含む培地は、表9に示す組成にて調製したMRS培地を使用した(リン酸を添加してpH6.2に調整した)。次に、15mlコニカルチューブ(FALCON)中で、菌体の濃度が調製した培地10mlに対して0.1%(v/v)となるように植菌(播種)し、インキュベーター(東京理化器械社)において30℃で24時間培養した(静置培養)。
例1(1)ウの記載と同様にして行った。
例1(1)エの記載と同様にして行った。
結果は、図10に示す通りであった。畜肉エキスの有無のみが異なる培地を用いて乳酸球菌の増殖に与える影響を検討した結果、乳酸球菌の増殖は、畜肉エキスを含まない培地よりも畜肉エキスを含む培地の方が有意に高いことが確認された。また、例7と例8の結果から、畜肉エキスを含まない培地にジカルボン酸を添加した培地の方が、畜肉エキスを含む培地(ジカルボン酸の添加なし)よりもOD600値が高く、ジカルボン酸による乳酸球菌に対する増殖促進効果が高いことが確認された(図9および10)。
Claims (13)
- ジカルボン酸および/またはその塩を有効成分として含んでなる、乳酸球菌の増殖促進剤。
- ジカルボン酸が炭素数4~6の脂肪族ジカルボン酸である、請求項1に記載の増殖促進剤。
- ジカルボン酸および/またはその塩が、リンゴ酸、α-ケトグルタル酸およびそれらの塩からなる群から選択される1種または2種以上である、請求項1または2に記載の増殖促進剤。
- 乳酸球菌がラクトコッカス属細菌である、請求項1~3のいずれか一項に記載の増殖促進剤。
- 乳酸球菌がラクトコッカス・ラクティス・サブスピーシーズ・ラクティスJCM5805である、請求項1~4のいずれか一項に記載の増殖促進剤。
- ジカルボン酸および/またはその塩を培地において0.01~8質量%の濃度で使用する、請求項1~5のいずれか一項に記載の増殖促進剤。
- 畜肉エキスを実質的に含まない培地に添加する、請求項1~6のいずれか一項に記載の増殖促進剤。
- ジカルボン酸および/またはその塩を含有する、乳酸球菌用培地。
- ジカルボン酸および/またはその塩を0.01~8質量%の濃度で含有する、請求項8に記載の培地。
- 畜肉エキスを実質的に含まない、請求項8または9に記載の培地。
- 請求項8~10のいずれか一項に記載の培地で乳酸球菌を培養する工程を含む、乳酸球菌の培養方法。
- 乳酸球菌の培地にジカルボン酸および/またはその塩を添加する工程を含む、乳酸球菌の増殖促進方法。
- 乳酸球菌の増殖促進剤としての、ジカルボン酸および/またはその塩の使用。
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Citations (4)
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JPS63216475A (ja) * | 1987-03-06 | 1988-09-08 | Meiji Milk Prod Co Ltd | 乳酸桿菌属細菌の自己溶解活性誘導法 |
WO2012091081A1 (ja) * | 2010-12-28 | 2012-07-05 | キリンホールディングス株式会社 | 乳酸菌を含むインターフェロン産生誘導剤 |
JP2020022393A (ja) | 2018-08-07 | 2020-02-13 | 株式会社ヤクルト本社 | 乳酸菌用培地 |
JP2020137456A (ja) | 2019-02-28 | 2020-09-03 | ビオフェルミン製薬株式会社 | 乳酸菌培養用培地 |
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JPS63216475A (ja) * | 1987-03-06 | 1988-09-08 | Meiji Milk Prod Co Ltd | 乳酸桿菌属細菌の自己溶解活性誘導法 |
WO2012091081A1 (ja) * | 2010-12-28 | 2012-07-05 | キリンホールディングス株式会社 | 乳酸菌を含むインターフェロン産生誘導剤 |
JP2020022393A (ja) | 2018-08-07 | 2020-02-13 | 株式会社ヤクルト本社 | 乳酸菌用培地 |
JP2020137456A (ja) | 2019-02-28 | 2020-09-03 | ビオフェルミン製薬株式会社 | 乳酸菌培養用培地 |
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LOUBIERE P, SALOU P, LEROY M J, LINDLEY N D, PAREILLEUX A: "Electrogenic malate uptake and improved growth energetics of the malolactic bacterium Leuconostoc oenos grown on glucose-malate mixtures", JOURNAL OF BACTERIOLOGY, vol. 174, no. 16, 1 August 1992 (1992-08-01), US , pages 5302 - 5308, XP055982590, ISSN: 0021-9193, DOI: 10.1128/jb.174.16.5302-5308.1992 * |
POOLMAN BERT, MOLENAAR DOUWE, SMID EDDY J, UBBINK TREES, ABEE TJAKKO, RENAULT PIERRE P, KONINGS WIL N: "Microbiology Malolactic Fermentation: Electrogenic Malate Uptake and Malate/Lactate Antiport Generate Metabolic Energy", JOURNAL OF BACTERIOLOGY, vol. 173, 1 October 1991 (1991-10-01), pages 6030 - 6037, XP055982593 * |
SALOU P, M. J. LEROY, G. GOMA , A. PAREILLEUX : "App .d IWtcrobiology Biotechnology Influence of pH and malate-glucose ratio on the growth kinetics of Leuconostoc oenos", APPL MICROBIOL BIOTECHNOL, vol. 36, 1 January 1991 (1991-01-01), pages 87 - 91, XP055982592 * |
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