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CN110295113A - Marine protease bacillus stability protective agent - Google Patents

Marine protease bacillus stability protective agent Download PDF

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Publication number
CN110295113A
CN110295113A CN201910694814.2A CN201910694814A CN110295113A CN 110295113 A CN110295113 A CN 110295113A CN 201910694814 A CN201910694814 A CN 201910694814A CN 110295113 A CN110295113 A CN 110295113A
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concentration
protective agent
tris
mannitol
edta
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CN110295113B (en
Inventor
颜琳
姚艳艳
常丽荣
闫欣
丁建姿
王振华
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Weihai Changqing Ocean Science And Technology Co ltd
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Weihai Changqing Ocean Science And Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N1/00Microorganisms, 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
    • C12N1/04Preserving or maintaining viable microorganisms

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
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  • Biotechnology (AREA)
  • Organic Chemistry (AREA)
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  • Bioinformatics & Cheminformatics (AREA)
  • Wood Science & Technology (AREA)
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  • General Engineering & Computer Science (AREA)
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  • Tropical Medicine & Parasitology (AREA)
  • Enzymes And Modification Thereof (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

The invention relates to a bacillus marinus stability protective agent, belonging to the technical field of microorganisms. The protective agent comprises Tris-HCl buffer solution, glycerol, mannitol, EDTA, potassium chloride, magnesium sulfate, disodium hydrogen phosphate and 2-ethyl diphenyl antimony hexanoate, wherein the Tris-HCl buffer solution, the glycerol, the mannitol, the EDTA, the potassium chloride, the magnesium sulfate, the disodium hydrogen phosphate and the 2-ethyl diphenyl antimony hexanoate are prepared into a liquid protective agent according to a certain proportion. The stability protective agent for the marine protease bacillus overcomes the problems of denaturation and low survival rate of marine protease bacillus strains under the condition of low-temperature refrigeration, and can stabilize the survival rate of the strains to be more than 90%.

Description

A kind of ocean production protease bacillus stability protection agent
Technical field
The present invention relates to the protections that microorganism preservation field more particularly to a kind of ocean produce protease bacillus stability Agent.
Background technique
With scale, the rapid development of intensive aquaculture industry, aquiculture disease frequently occurs.In recent years, people Begin trying that cultivation life can be improved using the producing enzyme probiotics in beneficial microbe, especially ocean in breeding production State environment improves the immunity of cultivated animals, inhibits pathogenic microorganism, to reduce the generation of disease.Wherein, source Yu Haiyang The bacillus for producing protease produces the property of protease because its is distinctive, is developed diversified usage mode, Ke Yizhi It connects and breeding water body or be added in feed is added uses, marine cultured animal can also be acted on by food organisms, it can be with It is used by injection or dipping bath.
Due to such production protease bacillus source Yu Haiyang, growing survival condition should be with marine eco-environment phase Seemingly, but usually it is low, active that the strain turned out under the environmental condition of laboratory simulation will appear survival rate when stored refrigerated The problems such as decline.Therefore, seeking a kind of ocean white protective agent for not having bacillus stability of laying eggs that is able to maintain is correlative study The project that personnel are probing into always.
Summary of the invention
The object of the present invention is to provide a kind of oceans to produce the stability protection agent of protease bacillus, is increased using the protective agent The activity of strong bacterium and the survival rate for improving bacterium.
To realize the above-mentioned technical purpose, the technical solution adopted by the present invention are as follows: a kind of ocean production protease bacillus is steady Qualitative protective agent, it is characterised in that: guarantor's protective agent is by adding glycerol, mannitol, EDTA, chlorine into Tris-HCl buffer Change potassium, magnesium sulfate, disodium hydrogen phosphate and 2 ethyl hexanoic acid diphenyl antimony to be made.
Further, the Tris-HCl buffer refers to that 10 mM Tris-HCl buffers, the pH value of buffer are 7.5。
Further, the concentration of the glycerol is 25-35%(v/v), the concentration of the mannitol is 5.5-7.5%(w/v), The concentration of the EDTA is 1.5-3.5%(w/v), the potassium chloride concentration be 0.5-0.7%(w/v), the magnesium sulfate concentration be 0.35-0.55%(w/v), the disodium hydrogen phosphate concentration is 0.25-0.45%(w/v), the 2 ethyl hexanoic acid diphenyl antimony Concentration is 0.03-0.08%(v/v), the concentration of above-mentioned each ingredient is calculated on the basis of protectant volume.
Further, the concentration of glycerol is 32%(v/v), the concentration of the mannitol is 5.5%(w/v), the EDTA Concentration is 1.5%(w/v), the potassium chloride concentration be 0.55%(w/v), the magnesium sulfate concentration be 0.35%(w/v), the phosphorus Sour disodium hydrogen concentration is 0.32%(w/v), the concentration of the 2 ethyl hexanoic acid diphenyl antimony be 0.05%(v/v).
Further, the stabilizer is the preparation method is as follows: glycerol, mannitol, EDTA, potassium chloride, magnesium sulfate, phosphoric acid hydrogen Disodium, 2 ethyl hexanoic acid diphenyl antimony are added in proportion in the solution of 10 mM Tris-HCl buffers (pH 7.5), normal It is stirred evenly under temperature, is completely dissolved solute, after standing 10 min, with the solution of 10 mM Tris-HCl buffers (pH 7.5) Constant volume.
A kind of ocean of the present patent application produces the stability protection agent of protease bacillus, specifically buffers in Tris-HCl Liquid is to be added with glycerol, mannitol, EDTA, potassium chloride, magnesium sulfate, disodium hydrogen phosphate, 2 ethyl hexanoic acid diphenyl in basic liquid Antimony.Wherein, Tris-HCl buffer makes the pH of solution keep stablizing for providing stable liquid environment, and pH7.6 close to Ocean produces the growth pH environment of protease bacillus in the seawater;Glycerol is intracellular for being freely spread to, and reduces intracellular Water activity, inhibit bacterial strain biochemical reaction progress;Mannitol is used to balance the osmotic pressure inside and outside strain cell;EDTA is as chela Antibacterial agent is closed, for inhibiting varied bacteria growing;Potassium chloride, magnesium sulfate, disodium hydrogen phosphate can provide ocean and produce protease bacillus The inorganic ion of required consumption in marine environment;2 ethyl hexanoic acid diphenyl antimony effectively can inhibit strain to fail, and be a kind of Important biostability.The activity and survival rate of protease bacillus can be greatly improved by protectant application.
Specific embodiment
Below by specific embodiment to ocean provided by the invention produce the stability protection agent of protease bacillus do into One step explanation.
Embodiment 1
A kind of ocean production protease bacillus stability protection agent, takes glycerol, mannitol, EDTA, potassium chloride, magnesium sulfate, phosphorus Sour disodium hydrogen, 2 ethyl hexanoic acid diphenyl antimony are added in proportion in the solution of 10 mM Tris-HCl buffers (pH 7.5), It stirs evenly at normal temperature, is completely dissolved solute, after standing 10 min, with 10 mM Tris-HCl buffers (pH 7.5) Solution constant volume obtains the concentration of each ingredient in final protective agent are as follows: 32% glycerol (v/v), 5.50% mannitol (w/v), 1.50% EDTA(w/v), 0.55% potassium chloride (w/v), 0.35% magnesium sulfate (w/v), 0.32% disodium hydrogen phosphate (w/v), 0.05% 2- ethyl Caproic acid diphenyl antimony (v/v).Wherein mM unit meaning is mM every liter.
It takes the ocean that viable bacteria content is 5,000,000,000 cfu/mL to produce protease bacillus living bacterium solution, is added and stablizes into bacterium solution Property protective agent 5%, saved 30 days under the conditions of 4 DEG C, every 5 days take out be coated on 2216E plate, be placed in 30 DEG C of constant temperature incubations 24 h are cultivated in case, carry out count plate, and statistics survival rate is as shown in the table.
Embodiment 2
A kind of ocean production protease bacillus stability protection agent, takes glycerol, mannitol, EDTA, potassium chloride, magnesium sulfate, phosphorus Sour disodium hydrogen, 2 ethyl hexanoic acid diphenyl antimony are added in proportion in the solution of 10 mM Tris-HCl buffers (pH 7.5), It stirs evenly at normal temperature, is completely dissolved solute, after standing 10 min, with 10 mM Tris-HCl buffers (pH 7.5) Solution constant volume obtains the concentration of each ingredient in final protective agent are as follows: 35% glycerol (v/v), 6.2% mannitol (w/v), 3.20% EDTA(w/v), 0.50% potassium chloride (w/v), 0.47% magnesium sulfate (w/v), 0.30% disodium hydrogen phosphate (w/v), 0.06% 2- ethyl Caproic acid diphenyl antimony (v/v), with the solution constant volume of 10 mM Tris-HCl buffers (pH 7.5).Wherein mM unit meaning is milli Mole every liter.
It takes the ocean that viable bacteria content is 5,000,000,000 cfu/mL to produce protease bacillus living bacterium solution, is added and stablizes into bacterium solution Property protective agent 5%, saved 30 days under the conditions of 4 DEG C, every 5 days take out be coated on 2216E plate, be placed in 30 DEG C of constant temperature incubations 24 h are cultivated in case, carry out count plate, and statistics survival rate is as shown in the table.
Embodiment 3
A kind of ocean production protease bacillus stability protection agent, takes glycerol, mannitol, EDTA, potassium chloride, magnesium sulfate, phosphorus Sour disodium hydrogen, 2 ethyl hexanoic acid diphenyl antimony are added in proportion in the solution of 10 mM Tris-HCl buffers (pH 7.5), It stirs evenly at normal temperature, is completely dissolved solute, after standing 10 min, with 10 mM Tris-HCl buffers (pH 7.5) Solution constant volume obtains the concentration of each ingredient in final protective agent are as follows: 27% glycerol (v/v), 5.8% mannitol (w/v), 1.8% EDTA(w/v), 0.60% potassium chloride (w/v), 0.55% magnesium sulfate (w/v), 0.45% disodium hydrogen phosphate (w/v), 0.07% 2- ethyl Caproic acid diphenyl antimony (v/v), with the solution constant volume of 10 mM Tris-HCl buffers (pH 7.5).Wherein mM unit meaning is milli Mole every liter.
It takes the ocean that viable bacteria content is 5,000,000,000 cfu/mL to produce protease bacillus living bacterium solution, is added and stablizes into bacterium solution Property protective agent 5%, saved 30 days under the conditions of 4 DEG C, every 5 days take out be coated on 2216E plate, be placed in 30 DEG C of constant temperature incubations 24 h are cultivated in case, carry out count plate, and statistics survival rate is as shown in the table.
Embodiment 4
A kind of ocean production protease bacillus stability protection agent, takes glycerol, mannitol, EDTA, potassium chloride, magnesium sulfate, phosphorus Sour disodium hydrogen, 2 ethyl hexanoic acid diphenyl antimony are added in proportion in the solution of 10 mM Tris-HCl buffers (pH 7.5), It stirs evenly at normal temperature, is completely dissolved solute, after standing 10 min, with 10 mM Tris-HCl buffers (pH 7.5) Solution constant volume obtains the concentration of each ingredient in final protective agent are as follows: 30% glycerol (v/v), 6.5% mannitol (w/v), 3.4% EDTA(w/v), 0.47% potassium chloride (w/v), 0.45% magnesium sulfate (w/v), 0.35% disodium hydrogen phosphate (w/v), 0.08% 2- ethyl Caproic acid diphenyl antimony (v/v), with the solution constant volume of 10 mM Tris-HCl buffers (pH 7.5).Wherein mM unit meaning is milli Mole every liter.
It takes the ocean that viable bacteria content is 5,000,000,000 cfu/mL to produce protease bacillus living bacterium solution, is added and stablizes into bacterium solution Property protective agent 5%, saved 30 days under the conditions of 4 DEG C, every 5 days take out be coated on 2216E plate, be placed in 30 DEG C of constant temperature incubations 24 h are cultivated in case, carry out count plate, and statistics survival rate is as shown in the table.
Embodiment 5
A kind of ocean production protease bacillus stability protection agent, takes glycerol, mannitol, EDTA, potassium chloride, magnesium sulfate, phosphorus Sour disodium hydrogen, 2 ethyl hexanoic acid diphenyl antimony are added in proportion in the solution of 10 mM Tris-HCl buffers (pH 7.5), It stirs evenly at normal temperature, is completely dissolved solute, after standing 10 min, with 10 mM Tris-HCl buffers (pH 7.5) Solution constant volume obtains the concentration of each ingredient in final protective agent are as follows: 25% glycerol (v/v), 5.8% mannitol (w/v), 3.5% EDTA(w/v), 0.70% potassium chloride (w/v), 0.50% magnesium sulfate (w/v), 0.35% disodium hydrogen phosphate (w/v), 0.04% 2- ethyl Caproic acid diphenyl antimony (v/v), with the solution constant volume of 10 mM Tris-HCl buffers (pH 7.5).Wherein mM unit meaning is milli Mole every liter.
It takes the ocean that viable bacteria content is 5,000,000,000 cfu/mL to produce protease bacillus living bacterium solution, is added and stablizes into bacterium solution Property protective agent 5%, saved 30 days under the conditions of 4 DEG C, every 5 days take out be coated on 2216E plate, be placed in 30 DEG C of constant temperature incubations 24 h are cultivated in case, carry out count plate, and statistics survival rate is as shown in the table.
Inventor is by the analysis of comparison above embodiments as a result, finding that ocean of the invention produces protease bacillus stability and protects Shield agent can keep ocean to produce protease bacillus survival rate and be maintained at 90% or more, wherein the effect of embodiment 1 is best, reaches To 94.16%.

Claims (4)

1. a kind of ocean produces the stability protection agent of protease bacillus, it is characterised in that: guarantor's protective agent is by Tris- Glycerol, mannitol, EDTA, potassium chloride, magnesium sulfate, disodium hydrogen phosphate and 2 ethyl hexanoic acid diphenyl antimony are added in HCl buffer It is made.
2. a kind of ocean according to claim 1 produces the stability protection agent of protease bacillus, it is characterised in that: described Tris-HCl buffer refers to that 10 mM Tris-HCl buffers, the pH value of buffer are 7.5.
3. a kind of ocean according to claim 2 produces the stability protection agent of protease bacillus, it is characterised in that: described The concentration of glycerol is 25-35%(v/v), the concentration of the mannitol is 5.5-7.5%(w/v), the concentration of the EDTA be 1.5- 3.5%(w/v), the potassium chloride concentration is 0.5-0.7%(w/v), the magnesium sulfate concentration be 0.35-0.55%(w/v), it is described Disodium hydrogen phosphate concentration is 0.25-0.45%(w/v), the concentration of the 2 ethyl hexanoic acid diphenyl antimony be 0.03-0.08%(v/ V), the concentration of above-mentioned each ingredient is calculated on the basis of protectant volume.
4. a kind of ocean according to claim 3 produces the stability protection agent of protease bacillus, it is characterised in that: glycerol Concentration be 32%(v/v), the concentration of the mannitol is 5.5%(w/v), the concentration of the EDTA be 1.5%(w/v), the chlorine Change potassium concn is 0.55%(w/v), the magnesium sulfate concentration be 0.35%(w/v), the disodium hydrogen phosphate concentration be 0.32%(w/ V), the concentration of the 2 ethyl hexanoic acid diphenyl antimony is 0.05%(v/v).
CN201910694814.2A 2019-07-30 2019-07-30 Marine protease bacillus stability protective agent Active CN110295113B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA870647A (en) * 1971-05-11 R. Leebrick John Diphenylantimony 2-ethylhexanoate and preparation
WO2000007606A2 (en) * 1998-08-07 2000-02-17 Ganeden Biotech, Inc. Methods for increasing the solubility of nutritional materials using probiotic lactic acid-producing bacteria
JP2003320000A (en) * 2002-05-02 2003-11-11 Fuji Silysia Chemical Ltd Sterilizing method and sterilizing apparatus
WO2004063036A1 (en) * 2003-01-09 2004-07-29 Baxter Healthcare S.A. Safety containers for biologically active substances and method for producing said container
CN101511950A (en) * 2006-08-29 2009-08-19 3M创新有限公司 Resin systems including reactive surface-modified nanoparticles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA870647A (en) * 1971-05-11 R. Leebrick John Diphenylantimony 2-ethylhexanoate and preparation
WO2000007606A2 (en) * 1998-08-07 2000-02-17 Ganeden Biotech, Inc. Methods for increasing the solubility of nutritional materials using probiotic lactic acid-producing bacteria
JP2003320000A (en) * 2002-05-02 2003-11-11 Fuji Silysia Chemical Ltd Sterilizing method and sterilizing apparatus
WO2004063036A1 (en) * 2003-01-09 2004-07-29 Baxter Healthcare S.A. Safety containers for biologically active substances and method for producing said container
CN101511950A (en) * 2006-08-29 2009-08-19 3M创新有限公司 Resin systems including reactive surface-modified nanoparticles

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