CN101864471B - Microbial fermentation method for producing hyaluronic acid - Google Patents

Microbial fermentation method for producing hyaluronic acid Download PDF

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Publication number
CN101864471B
CN101864471B CN2010103010647A CN201010301064A CN101864471B CN 101864471 B CN101864471 B CN 101864471B CN 2010103010647 A CN2010103010647 A CN 2010103010647A CN 201010301064 A CN201010301064 A CN 201010301064A CN 101864471 B CN101864471 B CN 101864471B
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liquid
fermentation
hyaluronic acid
sediment
lysate
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CN101864471A (en
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刘小兵
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Tianjin Kangting Biological Engineering Group Co Ltd
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TIANJIN KANGTING BIOTECHNOLOGY Co Ltd
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  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

The invention relates to a microbial fermentation method for producing hyaluronic acid, which comprises the following steps of: (1) preparing shaking flask seed liquid; (2) preparing seeding tank seed liquid; (3) performing fermentation culture to obtain fermentation liquor; (4) extracting and purifying the fermentation liquor, namely settling the fermentation liquor with ethanol, redissolving the sediment to obtain lysate, filtering the lysate with a secondary plate frame until the lysate is clear, filtering the lysate for three times again to obtain clear liquid, and spraying the clear liquid with the ethanol to obtain spray sediment; and (5) drying and pulverizing, namely dehydrating all the sediments obtained by the previous step with absolute ethyl alcohol, emulsifying and pulverizing with an emulsification pump to obtain powdery sediment, further dehydrating the powdery sediment with the absolute ethyl alcohol, and drying the dehydrated sediment under vacuum at the temperature of between 50 and 60 DEG C to obtain the hyaluronic acid. The production strain, which has large capsule and high hyaluronic acid yield and does not produce hyaluronidase, is screened by compound mutagenesis technology and has high adaptability to fermentation materials; the yield of the hyaluronic acid product is high and can reach 6 to 7g/L, the recovery rate reaches 92 percent, the fermentation time is only 24 to 26 hours, so that the energy consumption is effectively saved.

Description

The hyaluronic method of a kind of Production by Microorganism Fermentation
Technical field
The invention belongs to the microbial fermentation field, the hyaluronic method of especially a kind of Production by Microorganism Fermentation.
Background technology
Hyaluronan molecule has good moisture preserving property and viscoelasticity; Thereby be widely used in various makeup, healthcare products ophthalmologic operation, joint injection, promotion wound healing, regulate the aspects such as permeability, medical shaping material and healthcare products of vessel wall; Since mid-term 1990's; World market mucinase sales volume rises gradually, and global medicinal mucinase total sales volume is hundred million dollars of 4.2-5.5 at present, is certain to above 1,000,000,000 dollars by 2010.Present domestic research level is low, and throughput is merely 10 tons, can not satisfy the demand in market far away.
The technology fermentation period of the hyaluronic enterprise of most domestic Production by Microorganism Fermentation employing at present is long, and generally about 36-40, molecular weight of product is low; Product printing opacity rate variance (generally about 90%), protein contnt is high, and its finished product glucuronic acid content is generally 35-38%; Part producer hyaluronic acid product form is fibrous; This kind mucinase dissolving difficulty generally take about 2 days, and yield is lower than 75%; In order to satisfy the demand market of domestic continuous expansion, hyaluronic production technique is demanded urgently improving.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, the hyaluronic method of Production by Microorganism Fermentation that a kind of fermentation period is short, the product solvability is high, cost is low is provided.
The objective of the invention is to realize through following technical scheme:
The hyaluronic method of a kind of Production by Microorganism Fermentation, its step comprise that (1) shake-flask seed liquid, (2) seeding tank seed liquor, (3) fermentation culture obtain fermented liquid, and be further comprising the steps of:
(4) purification by liquid extraction of fermented liquid: fermented liquid must be filtrated behind Plate Filtration, add 2-4 ethanolic soln deposition doubly, the collecting precipitation thing; Add and the isopyknic Nacl solution stirring dissolving of filtrating, carry out the secondary Plate Filtration, obtain post-defecation liquid to clarification; Post-defecation liquid after the filter membrane of 0.3-0.5 micron or filter plate filter, is added acetate and regulates pH to 4.0-5.0, obtain three secondary clearing liquid after the s.t.; Spray three secondary clearing liquid with ethanolic soln again, precipitate again, obtain throw out;
(5) dry powder process: whole throw outs that above-mentioned steps is obtained carry out emulsification powder process with emulsification pump after the absolute ethyl alcohol dehydration, the powdery deposition; Further with after the absolute ethyl alcohol dehydration; After the 50-60 ℃ of vacuum-drying, moisture being controlled at below 10% promptly gets mucinase.
And the diatomaceous model that said Plate Filtration uses is No. 821 and No. 616.
And said No. 821 and No. 616 diatomaceous part by weight are 1: 1-5.
And the concentration of said ethanolic soln is: 95% (v/v).
And the concentration of said Nacl solution is: 0.1mol/L.
Advantage of the present invention and positively effect are:
1, to adopt the complex mutation technology screening to go out pod membrane big in the present invention, and hyaluronic acid productivity is high, do not produce the production bacterial classification of the bacterial classification of Unidasa; This bacterial classification is strong to fermentation raw material flexibility; The hyaluronic acid product productive rate is high, can reach 6-7g/L, and its recovery is up to 92%; Its fermentation time is merely 24-26 hour, effectively saves energy consumption.
2, the present invention adopts the spray powder-making technique of original creation, makes the product structure form fine and smooth more, and use properties is more superior, and solvability is better, and its transmittance reaches 99%.
3, the purification process of product of the present invention adopts Plate Filtration and micropore filter plate filtering technique, substitutes complex processes such as charcoal absorption and CPC absorption, makes production operation easier.
4, the present invention adopts acidifying ethanol spray powder-making technique, and the product of processing is Powdered, dissolves than cotton-shaped being easy to.
5, the present invention can be developed to food grade, cosmetics-stage and medical grade products with mucinase.
Embodiment
Below in conjunction with embodiment, the present invention is further specified, following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.
The fermented bacterium that the present invention uses belongs to external bacterial classification, and bacterium classification is a streptococcus zooepidemicus.
The hyaluronic method of a kind of Production by Microorganism Fermentation, its technological process is following:
(1) shake-flask seed liquid: slant strains is inoculated in the 1L Erlenmeyer flask that sterile medium 400ml is housed, cultivated 12-16 hour for 37 ℃, the om observation thalli growth is good, and no living contaminants can be inoculated in the seeding tank;
(2) seeding tank seed liquor: press the formulated nutrient solution 60L of shake-flask seed liquid, add in the seeding tank, logical steam heating was sterilized 30 minutes for 121 ℃; Be cooled to 37 ℃,, shake-flask seed liquid be inoculated in the seeding tank with the flame method inoculation; Air flow 60L/min, mixing speed 120-140/min cultivated 12-16 hour for 37 ℃; The om observation thalli growth is good, and no living contaminants can be inoculated in the fermentor tank;
(3) fermentation culture: press the prescription of seeding tank, bring up to 6% to the consumption of sugar, preparation nutrient solution 600L adds in 1 ton the fermentor tank; Logical steam heating was sterilized 30 minutes, and was cooled to 37 ℃ for 121 ℃; Seed liquor is inoculated in the fermentor tank through the culture transferring pipeline, keeps air flow 400-600L/min, mixing speed 140-160/min; Cultivated 24-26 hour for 37 ℃, in the fermenting process, below the density loss to 0.5% of sugar; PH descends when descending very slowly or no longer, is fermentation termination, obtains containing hyaluronic acid fermentation liquid; (above 3 steps are at Ma Chaomei (Liuzhou Chemical Industry Group Co., Ltd), fermentative Production mucinase technical study, Guangxi Technical College's journal; 2007,18 (3): report is arranged among the 8-12, belong to prior art; Application of the present invention is just described in detail no longer more), application of the present invention also comprises:
(4) purification by liquid extraction of fermented liquid: fermented liquid must be filtrated behind Plate Filtration; 95% ethanol sedimentation that adds 3 times, the collecting precipitation thing adds the Nacl solution stirring dissolving with the isopyknic 0.1mol/L of filtrating; Carry out the secondary Plate Filtration to clarification, obtain post-defecation liquid; Post-defecation liquid after 0.45 micron filter membrane or filter plate filter, is added acetate and regulates pH to 4.0-5.0, obtain three secondary clearing liquid after the s.t., spray three secondary clearing liquid with 95% ethanol again, precipitate again, obtain throw out;
The diatomaceous model of Plate Filtration is No. 821 and No. 616, and with two kinds of zeyssatite proportional mixing, the sheet frame of packing into after obtaining filters, and No. 821 and No. 616 diatomaceous part by weight are 1: 1-5.
(5) dry powder process: whole throw outs that will obtain carry out emulsification powder process with emulsification pump after the absolute ethyl alcohol dehydration, get the powdery deposition, and further with after the absolute ethyl alcohol dehydration, after the 50-60 ℃ of vacuum-drying, moisture being controlled at below 10% promptly gets mucinase.
The hyaluronic acid product productive rate that obtains through the present invention is high, can reach 6-7g/L, and its recovery is 92%.
Product performance index:
Proterties: white powder or fine particle;
Smell: odorless, tasteless;
pH(1g/L): 6.5-7.0;
Clarity (1g/L): transmittance>99%;
Weight loss on drying:<10%;
Molecular weight:>1.8 * 106;
Protein:<0.05%;
Glucuronic acid: >=44%;
Plumbous:<20mg/kg;
Arsenic:<2mg/kg;
Total plate count:<10/gram;
Excrement colibacillus group: must not detect;
Streptococcus aureus: must not detect;
Pseudomonas aeruginosa: must not detect.

Claims (1)

1. hyaluronic method of Production by Microorganism Fermentation, its step comprises that (1) shake-flask seed liquid, (2) seeding tank seed liquor, (3) fermentation culture obtain fermented liquid, is characterized in that: further comprising the steps of:
(4) purification by liquid extraction of fermented liquid: fermented liquid must be filtrated behind Plate Filtration, add 2-4 ethanolic soln deposition doubly, the collecting precipitation thing; Add and the isopyknic Nacl solution stirring dissolving of filtrating, carry out the secondary Plate Filtration, obtain post-defecation liquid to clarification; Post-defecation liquid after the filter membrane of 0.3-0.5 micron or filter plate filter, is added acetate and regulates pH to 4.0-5.0, obtain three secondary clearing liquid after the s.t.; Spray three secondary clearing liquid with ethanolic soln again, precipitate again, obtain throw out;
(5) dry powder process: whole throw outs that above-mentioned steps is obtained carry out emulsification powder process with emulsification pump after the absolute ethyl alcohol dehydration, the powdery deposition; Further with after the absolute ethyl alcohol dehydration; After the 50-60 ℃ of vacuum-drying, moisture being controlled at below 10% promptly gets mucinase;
The concentration of said ethanolic soln is: 95% (v/v);
The concentration of said Nacl solution is: 0.1mol/L.
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CN102559801A (en) * 2011-12-20 2012-07-11 宁夏大学 Fermentation method of hyaluronic acid capable of overcoming glucose and lactic acid restraining
CN105434468A (en) * 2015-12-15 2016-03-30 天津市康婷生物工程有限公司 Preparation method of skin cell damage repairing reagent
CN106632728A (en) * 2016-12-02 2017-05-10 天津市康婷生物工程有限公司 Method for improving yield of hyaluronic acid with high molecular weight
CN106589164A (en) * 2016-12-02 2017-04-26 天津市康婷生物工程有限公司 Method for increasing yield of hyaluronic acid
CN107929209A (en) * 2017-12-23 2018-04-20 卞国民 A kind of Essence of loach facial mask

Citations (2)

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Publication number Priority date Publication date Assignee Title
CN1099068A (en) * 1993-04-16 1995-02-22 株式会社乐喜 Prepare hyaluronic microorganism, substratum and method
CN101020724A (en) * 2006-02-14 2007-08-22 镇江东方生物工程设备技术有限责任公司 Process of preparing low molecular weight sodium hyaluronate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1099068A (en) * 1993-04-16 1995-02-22 株式会社乐喜 Prepare hyaluronic microorganism, substratum and method
CN101020724A (en) * 2006-02-14 2007-08-22 镇江东方生物工程设备技术有限责任公司 Process of preparing low molecular weight sodium hyaluronate

Non-Patent Citations (2)

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Title
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郭学平等.透明质酸的生产.《药物生物技术》.2000,第7卷(第1期),2.1工艺过程. *

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Inventor after: Liu Xiaobing

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Address after: No.9 Saida South Road, Xiqing Economic and Technological Development Zone, Tianjin 300200

Patentee after: Tianjin Kangting Bioengineering Group Co., Ltd.

Address before: 300385 No. 5 Jianfu Road, Xiqing Economic Development Zone, Tianjin

Patentee before: Tianjin Kangting Biotechnology Co., Ltd.