WO2006068132A1 - 細胞壁構成成分を連続的に産生するプロトプラストの培養方法および培養システム - Google Patents
細胞壁構成成分を連続的に産生するプロトプラストの培養方法および培養システム Download PDFInfo
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- WO2006068132A1 WO2006068132A1 PCT/JP2005/023355 JP2005023355W WO2006068132A1 WO 2006068132 A1 WO2006068132 A1 WO 2006068132A1 JP 2005023355 W JP2005023355 W JP 2005023355W WO 2006068132 A1 WO2006068132 A1 WO 2006068132A1
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- cell wall
- protoplast
- culture
- protoplasts
- culture solution
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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; 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
- C12N1/14—Fungi; Culture media therefor
- C12N1/16—Yeasts; Culture media therefor
- C12N1/18—Baker's yeast; Brewer's yeast
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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; 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
- C12N1/14—Fungi; Culture media therefor
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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; 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
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/26—Preparation of nitrogen-containing carbohydrates
Definitions
- the present invention relates to a protoplast culture technique for continuously producing cell wall constituent components. More specifically, the present invention relates to a culture method and a culture system that continuously produce cell wall constituent components while suppressing cell wall regeneration of protoplasts.
- Protoplast is a protoplasm obtained by removing a cell wall by enzymatic treatment (eg, lysozyme treatment) of a cell wall of bacteria, fungi, mold, algae, plant cells, etc. in an isotonic solution. Is the body.
- This protoplast consists only of a cell membrane and a cytoplasm component, and maintains the same activity as a cell under an appropriate osmotic pressure condition. Therefore, it has been used as a material for cell fusion and gene transfer.
- this protoplast has poor mass transfer! When it is embedded and cultured in a gel or the like, it produces cell wall constituents, which accumulate and deposit on the protoplast surface layer. It has the property of returning to the cell after completing the regeneration and starting to grow.
- cell wall constituents contain useful components applicable to pharmaceuticals and foods (for example, polysaccharides such as ⁇ -D glucan).
- useful components for example, polysaccharides such as ⁇ -D glucan.
- a technology for efficiently and mass-producing components is desired from related industries.
- Patent Document 1 discloses a technique for culturing a protoplast obtained by removing a cell wall of yeast in a culture solution and producing a cell surface substance in the culture solution, in particular, a protoplast by a comprehensive method.
- the immobilized protoplasts thus obtained are cultured in a culture solution to which a cell wall synthesis inhibitor (antifungal agent / acleasin ⁇ ) is added, and the cell surface material is continuously added to the culture solution.
- the technology to produce is disclosed.
- the purpose of this technology is to produce a cell wall material that also has a group of enzyme proteins that exist between the cell wall and the cell membrane, which does not inherently produce cell wall components. Because of this In the invention, a system that does not forcibly produce cell wall constituents using a cell wall synthesis inhibitor is employed.
- Patent Document 2 discloses a technique for providing a stable protoplast having resistance to inflow of calcium by coating a cell membrane with a hydrophobized polysaccharide.
- Patent Document 1 JP-A-8-103271.
- Patent Document 2 JP-A-8-56654.
- the present invention realizes protoplast culture under mild culture conditions, and enables continuous production of natural cell wall components that are not returned to the cell from the protoplast.
- the main purpose is to provide technology.
- the present inventor In order to prevent the cell wall component from accumulating on the surface layer of the protoplast and returning the protoplast to the cell, the present inventor first cultivated the protoplast in a liquid culture and diffused the cell wall component in the culture solution.
- the “protoplast” in the present invention is defined as a concept including “sphere plast”.
- the cell wall regeneration of the protoplast can be more reliably prevented. It is possible to efficiently produce cell wall constituents from protoplasts into the culture medium. If the degree of flow of the culture solution is reduced within the above range, the cell wall constituents are recovered in the form of a sheet. It becomes possible to increase the amount of cell components produced by increasing the degree of flow of the culture solution.
- any protoplast according to the present invention can be used that has been produced by cell force selected from, for example, bacteria, yeasts, molds, mushrooms, algae, and plants. That is, the present invention can be utilized as a production technique for useful cell wall constituents of bacteria, yeasts, molds, mushrooms, algae, and plants.
- Cell wall constituents in bacteria are peptide dallicans, ticoic acid, chitin, ⁇ -D dulcan, mannan, lipoproteins, lipopolysaccharides (especially gram-negative bacteria), various enzymes, etc.
- cellulose In the case of plants, cellulose, hemicellulose (xylan, mannan, galactan, glucan, etc.), glycopeptide, pectin (pectin oligosaccharide), cellooligosaccharide, lignin, various enzymes, medicinal ingredients, and the like.
- the protoplast having a property sensitive to physical impact is protected by encapsulating or fixing the protoplast.
- it protects the protoplasts from external forces when the culture medium is powered.
- envelope means that a protoplast is covered with a thin membrane and the protoplast is suspended in a solution in the membrane, and “immobilization” is a gel or the like. This means that the individual protoplasts are fixed individually.
- the protoplast is cultured in the envelope or fixed membrane material by performing the envelope or immobilized template using a material that permeates the culture solution and does not permeate the cell wall constituents.
- the method can be achieved by continuously accumulating the cell wall constituents in the liquid. According to this method, cell wall constituent components can be accumulated in the culture solution held in the envelope or in the fixed silkworm material, so that the collection and extraction of useful cell wall constituent components can be performed. It becomes easy.
- the material used for the envelope or the immobilizing agent that permeates the culture solution and does not permeate the cell wall constituents includes, for example, alginic acid, pectin, chitosan, agar, agarose, gellan gum, gelatin , Collagen, Kappa Laguinan, Polybulal alcohol, Optical rack Examples thereof include a bridge resin, a photosensitive resin, and a composite containing a part of these components.
- the material used for the envelope or immobilization is a material having a property of permeating the cell wall constituent component, so that it exists outside the envelope or the immobilization material.
- a method for continuously producing the cell wall constituents in a culture solution is provided.
- the cell wall constituents can be continuously released into the culture solution existing outside the envelope or the immobilized material while the protoplast is physically protected by the envelope or the immobilized material. it can. Therefore, with this method, it is possible to accumulate cell wall constituents in a narrow culture medium region within the envelope or fixed material, and to produce a larger amount of cell wall constituents continuously than in the method. It becomes.
- Examples of the material having the property of permeating the cell wall constituents include, for example, high molecular mass transfer ability (used in electrophoresis of polymer substances), agarose gel, alginic acid, Gels such as pectin, chitosan, agar, gellan gum, gelatin, collagen, kappa riki ginnan, polyvinyl alcohol, photocrosslinkable rosin, photosensitive rosin, and complexes containing some of these components
- high molecular mass transfer ability used in electrophoresis of polymer substances
- agarose gel alginic acid
- Gels such as pectin, chitosan, agar, gellan gum, gelatin, collagen, kappa riki ginnan, polyvinyl alcohol, photocrosslinkable rosin, photosensitive rosin, and complexes containing some of these components
- the present invention is a system for culturing protoplasts in liquid, a culture solution storage unit for storing a culture solution, and the protoplast is not destroyed, and deposition of cell wall components on the surface of the protoplast can be prevented.
- a protoplast culture system comprising at least means for moving the culture medium with a strength within a range and means for recovering cell wall constituents produced in the culture liquid.
- the means for moving the culture solution is a range that effectively prevents the cell wall constituents produced from protoplasts from accumulating and depositing on the surface layer of the protoplast and regenerating the cell wall, and does not destroy the protoplasts. Any means can be used as long as the medium can be moved, vibrated, stirred, etc.
- protoplasts can be liquefied under mild culture conditions with low environmental impact.
- the protoplast state can be maintained and the culture can be continued. That is, useful cell wall components can be continuously produced in the culture solution during the culturing process while effectively preventing the cell wall components from accumulating on the surface layer of the protoplast and returning the protoplasts to the cells.
- FIG. 1 shows a state in which a culture solution 1 prepared for liquid culture of a protoplast indicated by the symbol P is accommodated in a culture vessel 2.
- This culture solution 1 is adjusted to isotonic solution conditions suitable for the protoplast.
- the culture vessel 2 for example, a vessel having a petri dish shape can be adopted, but the vessel shape is not particularly limited and can be freely selected according to the purpose.
- the culture solution 1 may be gently moved by shaking the culture vessel 2 at a strength that does not destroy the protoplast P.
- the culture solution 1 is moved by placing the culture vessel 2 on a shaking table or stirring with a magnetic stirrer.
- This protoplast P normally produces a cell wall component W, and the cell wall component W accumulates and deposits on the surface layer of the protoplast P, so that the cell wall regenerates and returns to the cell and starts cell proliferation. It has the property.
- the culture solution 1 by appropriately moving the culture solution 1 around the protoplast P, it is possible to effectively prevent the cell wall constituent component W produced from the protoplast P from accumulating and depositing on the surface layer of the protoplast P. . As a result, cell wall regeneration on the surface of protoplast P can be more reliably prevented.
- the protoplast P that does not undergo cell wall regeneration continues to produce the cell wall component W, so that the cell wall component W accumulates in the culture solution 1. Therefore, if the culture medium 1 with a high concentration of the cell wall constituent W is collected and the cell wall constituent W is extracted from the culture medium 1, the useful cell wall constituent W can be easily mass-produced. Can do. For example, a polysaccharide such as j8-D glucan can be mass-produced.
- FIG. 2 is a diagram showing a concept of another embodiment of the present invention.
- a capsule-like envelope (or a fixed membrane) M is formed in a state where the culture medium la is encapsulated around the protoplast P, and the culture medium lb is present outside the envelope M.
- RU capsule-like envelope
- the envelope M is formed of a material having a certain property that permeates the culture medium 1 and does not permeate the cell wall constituent W, it encloses the cell wall constituent W produced from the protoplast P. film
- the material permeability of the envelope M it is possible to select a substance to be accumulated in the envelope M and a substance to be discharged out of the envelope M.
- a material for the envelope M for example, sodium alginate can be employed.
- the cell wall component W produced from protoplast P stays and accumulates in the culture solution la of the envelope M that does not diffuse widely into the culture solution lb. Therefore, the operation of recovering the cell wall constituent component W is facilitated.
- FIG. 3 is a view for explaining the concept of a modified embodiment in which the protoplast P is enveloped or fixed.
- This embodiment is characterized in that the envelope M is formed of a material that can permeate the cell wall constituent W produced from protoplast P. Therefore, in this embodiment, the cell wall component W produced from the protoplast P passes through the envelope M from the culture solution la in the envelope M, the gel for fixation, etc., and is outside the envelope M. It is released into the culture medium lb.
- the present embodiment has an advantage that the cell wall constituent W can be continuously produced from the protoplast P over a longer period of time than the embodiment shown in FIG.
- This system S includes a culture solution storage part S1 (for example, a culture vessel 2) that contains a culture solution 1 that can be used for liquid culture of protoplast P, and the protoplast P that is strong enough to prevent protoplast P from being destroyed.
- a means S2 that can power the culture medium 1 within a range that can prevent the deposition of the cell wall constituent W on the surface layer, and a means S3 that recovers the cell wall constituent W produced in the culture medium 1.
- the cell wall constituent component W is extracted from the collected culture medium 1.
- the means S2 capable of driving the culture medium 1 is not particularly limited, and a twisting device, a magnetic stirrer device, a stirring device, or a device in which these are enlarged can be appropriately employed. This means is that if the stationary liquid culture is carried out without moving the culture solution 1, the means S2 should not be driven! /.
- the concentration of the protoplast used for the culture in an appropriate range.
- concentration of the protoplast used for the culture in an appropriate range.
- IX 10 6 to 1 X li ⁇ cells ZmL is optimal. If the concentration is outside this range, cell wall components cannot be produced satisfactorily.
- YPD medium Gibcose 20g Repolipeptone 20g / Yeast extract 10gZ, pH 5.
- yeast cells were grown at 30 at 200 rpm for 14 hours.
- Yeast cells obtained by culturing were collected, cell wall lysing enzyme solution (lytic enzyme: Zymolyase 20T (manufactured by Seikagaku Corporation)) was 30 UZmL, accelerator: 2— Mercaptoethanol 100 mM, osmotic pressure regulator: 0. 9M mannitol, buffer solution: HEPES (pH7, 5) was allowed to act, and the mixture was gently shaken for 1.5 hours with mild cheer at the condition of 30 to prepare protoplasts.
- lytic enzyme Zymolyase 20T (manufactured by Seikagaku Corporation)
- accelerator 2— Mercaptoethanol 100 mM
- osmotic pressure regulator 0. 9M mannitol
- buffer solution HEPES (pH7, 5) was allowed to act, and the mixture was gently shaken for 1.5 hours with mild cheer at the condition of 30 to prepare protoplasts.
- Protoplasts obtained in this way were prepared in liquid medium (YPMP medium (glucose 20 gZL, corrected; paper (J ⁇ J91) Dipeptone 20 g /: L, yeast extract 10 g /: L, mannini monole 0.85 M, pH 5.7) placed in a shrimp dish and liquid culture was performed at 30 ° C. The same experiment was performed when the culture solution was gently shaken with a mild shaker.
- YPMP medium glucose 20 gZL, corrected; paper (J ⁇ J91) Dipeptone 20 g /: L, yeast extract 10 g /: L, mannini monole 0.85 M, pH 5.7
- Eschrichia coli cells were grown under conditions of 37 ° C, 10 Orpm, 10-12 hours using a 500 mL Erlenmeyer flask containing 200 mL of tryptic soy bouillon medium.
- Eschrichia coli cells obtained by culturing were collected, cell wall lysing enzyme solution (lysing enzyme: Ly sozyme (derived from chicken egg white) lmgZL, outer membrane disrupting agent: EDTA 5 mM, osmotic pressure adjusting agent: mannitol 0.9 M, Buffer: Tris-HCl (pH 8.0)) was allowed to act, and the mixture was gently shaken for 1.5 hours under mild conditions at 30 ° C to produce protoplasts.
- lysing enzyme Ly sozyme (derived from chicken egg white) lmgZL
- outer membrane disrupting agent EDTA 5 mM
- osmotic pressure adjusting agent mannitol 0.9 M
- Buffer Tris-HCl (pH 8.0)
- the obtained protoplasts were subjected to liquid culture under conditions of 37 ° C using a petri dish containing a liquid medium (tryptoso-bouillon medium containing 0.9 M mannitol). .
- the same experiment was performed when the culture solution was gently shaken with a mild shaker.
- Catharanthus roseus L. cells were grown at 120 rpm for 7 days.
- Catharanthus roseus L cells obtained by culturing, cell wall lysing enzyme solution (lytic enzyme: pectinase ⁇ 23 (manufactured by Seikagaku Corporation) 1.
- lytic enzyme pectinase ⁇ 23 (manufactured by Seikagaku Corporation) 1.
- OgZL Cellulase Onozuka RS ( 10.
- the obtained protoplasts were used in a petri dish containing a liquid medium (Murashige-Skoog medium component, glucose 30 g / L, 2, 4 DO. 5 mgZL, mannitol 100 g / L, pH 6.2). Liquid culture was performed under the condition of ° C. . The same experiment was performed when the culture solution was slowly shaken with a mild shaker.
- a liquid medium Merashige-Skoog medium component, glucose 30 g / L, 2, 4 DO. 5 mgZL, mannitol 100 g / L, pH 6.2.
- CZAPEK Dox medium + 0.5% casamino acid medium was allowed to stand still at 30 ° C. for several days using a 500 mL triangular flask containing lOOmL to proliferate Aspergillus oryzae cells.
- Aspergillus oryzae cells obtained by culturing were collected, cell wall lytic enzyme solution (lytic enzyme: FUNCELASE (manufactured by Yakult Pharmaceutical Co., Ltd.) 2%, Yatalase (manufactured by Takara Bio Inc.) 1%, Zymolyase 20T0. 2% Then, osmotic pressure adjusting agent: 0.8M NaCL, buffer solution: 10mM phosphate buffer pH6.0) was allowed to act, and the mixture was gently shaken on a mild shaker for 3 hours at 30 ° C to prepare a protoplast.
- the obtained protoplasts were subjected to stationary liquid culture at 25 ° C using a petri dish containing a liquid medium (Czapek-Dox medium + 0.5% casamino acid medium + 0.8M NaCl). . . The same experiment was performed when the culture solution was slowly shaken with a mild shaker.
- the core liquid inside the envelope was used.
- the method for producing the envelope is as follows. 1) Drip the core solution into the membrane liquid stirred with a stirrer, and continue stirring for 10 minutes to form the envelope. 2) Dilute the whole solution twice with the buffer solution with adjusted osmotic pressure, collect the envelope with a mesh, and wash the envelope with the same buffer. 3) Stir the envelope in 1% (w / v) CaCl solution for 30 minutes to reinforce the envelope. 4) CaCl
- Solution 1 Protoplasts with various cell forces of any concentration, 2% sodium alginate (G-rich, BDH), MES buffer (pH 5.7), osmotic pressure regulator: 1M mannitol.
- Solution 2 0.1 M SrCl, MES buffer (pH 5.7), 0.7 M mannitol.
- YPD medium YPMP medium containing 0.8M mannitol.
- the volume of solution 2 should be 4-5 times that of solution 1. After removing Solution 2, add the above medium and let stand for 15 minutes. Incubate while changing the medium and adding shaking.
- YPMP medium Using YPMP medium, prepare a 1.5% agarose S-LM-3 (Cosmo Bio) solution. And autoclaved. After that, it was kept warm in a 45 ° C water bath. Protoplasts with the desired concentration of yeast suspended in YPMP medium were placed in an agarose solution and mixed gently, and then cooled to gel. Next, cut the solidified gel with a scalpel to make a 5mm block. The medium was added to the medium and cultured while shaking.
- S-LM-3 Cosmo Bio
- the present invention is based on the fact that cell wall constituents contain useful ingredients applicable to pharmaceuticals and foods (for example, polysaccharides such as ⁇ -D glucan). It can be used as a technology for making them produce.
- peptide dallicans for example, in bacteria, peptide dallicans, ticoic acid, chitin, ⁇ -D glucan, mannan, lipoprotein, lipopolysaccharide (especially Gram-negative bacteria), various enzymes, etc.
- yeast In the case of yeast, ⁇ -1, For algae, such as 3-glucan, mannan, and various enzymes, different forces depending on the type, for example, cellulose, xylan, mannan fibrils, alginic acid, fucoidin, laminaran, agar, various enzymes, etc.For plants, cellulose, hemicellulose (Xylan, mannan, galactan, glucan, etc.), glycopeptide, pectin (pectin oligosaccharide), cello-oligosaccharide, lignin, various enzymes, medicinal ingredients, etc.
- pectin pectin oligosaccharide
- cello-oligosaccharide lignin
- various enzymes medicinal ingredients, etc.
- the present invention may be applicable to the detection of a minute amount of cell wall constituents.
- Cell wall constituents include various carbohydrates and glycoproteins. Some of these components play important roles as temperature, osmotic pressure, pathogen recognition sensors, and so on.
- these components can be obtained easily and in large quantities while remaining relatively free. Therefore, for example, a lectin (sugar binding protein) or the like is fixed to an electrode, a specific cell wall constituent component is bound to a lectin or the like, and the binding is electrically charged.
- a lectin sucgar binding protein
- a specific cell wall constituent component is bound to a lectin or the like, and the binding is electrically charged.
- specific fine cell wall components can be detected with high accuracy by detecting changes in air resistance. For example, by acquiring in advance the change in electrical resistance when a specific cell wall constituent component and lectin are bound, there is a possibility that the component can be quantitatively detected.
- the present invention may be applicable to an assembly process of electronic circuit components.
- the cell wall component can be attached to an electrode or the like relatively easily, for example, by applying an electric field.
- cell wall components have the property of specific mutual adsorption between cell walls of the same species. Therefore, there is a possibility that a part can be assembled in a desired form by attaching cell wall components to each part to be joined and adsorbing both cell walls. In this method, by utilizing the specific mutual adsorption between the cell walls, it is possible to precisely assemble complex and fine parts, and the assembly requires complicated equipment and processes. If it can be done without using it, there is an advantage.
- FIG. 1 is a diagram for explaining the basic concept of a protoplast continuous culture method for continuously producing cell wall constituents according to the present invention.
- FIG. 2 is a diagram schematically showing the structure of a protoplast (P) encapsulated.
- FIG. 3 is a diagram for explaining the concept of another embodiment of a configuration in which protoplast P is enveloped or fixed.
- FIG. 4 is a diagram showing a basic configuration of a protoplast continuous culture system (S) that continuously produces cell wall constituents according to the present invention.
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Abstract
Description
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006548997A JP4982749B2 (ja) | 2004-12-20 | 2005-12-20 | 細胞壁構成成分を連続的に産生するプロトプラストの培養方法および培養システム |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-367261 | 2004-12-20 | ||
| JP2004367261 | 2004-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006068132A1 true WO2006068132A1 (ja) | 2006-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2005/023355 Ceased WO2006068132A1 (ja) | 2004-12-20 | 2005-12-20 | 細胞壁構成成分を連続的に産生するプロトプラストの培養方法および培養システム |
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| Country | Link |
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| JP (1) | JP4982749B2 (ja) |
| WO (1) | WO2006068132A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570769B (zh) * | 2008-04-29 | 2013-06-19 | 安琪酵母股份有限公司 | 一种酵母葡聚糖、甘露聚糖及其生产方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08103271A (ja) * | 1994-10-07 | 1996-04-23 | Oriental Yeast Co Ltd | 酵母プロトプラストによる細胞表層物質の生産方法 |
-
2005
- 2005-12-20 JP JP2006548997A patent/JP4982749B2/ja not_active Expired - Lifetime
- 2005-12-20 WO PCT/JP2005/023355 patent/WO2006068132A1/ja not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08103271A (ja) * | 1994-10-07 | 1996-04-23 | Oriental Yeast Co Ltd | 酵母プロトプラストによる細胞表層物質の生産方法 |
Non-Patent Citations (1)
| Title |
|---|
| ISHIZAKA M. ET AL.: "Biseibutsu Protoplast no Kino o Kodo Riyo shita Saiboheki Seibun no Shinki Seisanho no Kaihatsu", THE SOCIETY FOR BIOTECHNOLOGY, JAPAN KOEN YOSHISHU, NEN 9 GATSU, vol. 2005, 2005, pages 154, 2E12-1, XP003007279 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570769B (zh) * | 2008-04-29 | 2013-06-19 | 安琪酵母股份有限公司 | 一种酵母葡聚糖、甘露聚糖及其生产方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4982749B2 (ja) | 2012-07-25 |
| JPWO2006068132A1 (ja) | 2008-08-07 |
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