WO2006028048A1 - 菌体培養方法 - Google Patents
菌体培養方法 Download PDFInfo
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- WO2006028048A1 WO2006028048A1 PCT/JP2005/016244 JP2005016244W WO2006028048A1 WO 2006028048 A1 WO2006028048 A1 WO 2006028048A1 JP 2005016244 W JP2005016244 W JP 2005016244W WO 2006028048 A1 WO2006028048 A1 WO 2006028048A1
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- Prior art keywords
- culture
- stirring
- aeration
- agitation
- fatty acid
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- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
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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
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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
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- C12P7/64—Fats; Fatty oils; Ester-type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
- C12P7/6409—Fatty acids
- C12P7/6427—Polyunsaturated fatty acids [PUFA], i.e. having two or more double bonds in their backbone
Definitions
- the present invention relates to a highly unsaturated fatty acid or a highly unsaturated fatty acid as a constituent fatty acid using an aeration and agitation type culture apparatus capable of adjusting and controlling the agitation power and aeration volume in a medium containing at least a carbon source and a nitrogen source.
- the present invention relates to a cell culture method for culturing a microorganism capable of producing at least any one of the compounds contained as.
- Non-Patent Document 1 Kiyoshi Murakami et al., Chemical Engineering Journal 26 (4): 557-562 (2000)
- the first characteristic configuration of the present invention is that a highly unsaturated fatty acid or a highly advanced fatty acid is used in a medium containing at least a carbon source and a nitrogen source by using an aeration and agitation type culture apparatus capable of adjusting and controlling the agitation power and aeration rate.
- a medium containing at least a carbon source and a nitrogen source can be cultured, and a homogeneous material can be always prepared because mechanical agitation is performed. As a result, reproducibility in the growth and productivity of the bacterial cells can be ensured.
- the required power parameter for stirring (P ZV) ° 95 [(WZm 3 ) ° 95 ] is set to 203 or more because the stirring power per unit liquid volume is shown in Ex. 4-2 column in Table 4. 269 (WZm 3 ) or more at the start of the culture, that is, the required dynamic power parameter (PZV) ° 95 [(WZm 3 ) ° 95 ] is 203 or more, and stirring at the start of the culture, preferably the start of the culture It is intended to stir more strongly than the time.
- Arachidonic acid accounts for about 10% of fatty acids that make up vital organs such as blood and liver (for example, arachidonic acid is 11% and EPA is 1% in the ratio of fatty acids in phospholipids of human blood) DHA is 3%). And it is the flow of membrane as the main component of cell membrane It is involved in the regulation of sex and exhibits various functions in the body's metabolism, while playing an important role as a direct precursor of prostaglandins.
- At least one of arachidonic acid or an oil and fat having arachidonic acid as a constituent fatty acid which plays an especially important role in infant nutrition, is efficiently and stably produced. It is possible. It can contribute to the maintenance and promotion of public health through the manufacturing and sales of foods, drinks, therapeutic nutritional foods, feeds and pharmaceuticals.
- a third characteristic configuration of the present invention is that the PUFA-producing bacterium belongs to the genus Mortierella (Mortierella).
- a fourth characteristic configuration of the present invention is that the predetermined time after the start of culture is preferably 12 to 24 hours.
- the mechanical agitation with a small agitating shear force for which the agitation power per unit liquid amount is 269 (W / m 3 ) or less is 12 to 24 hours after the start of culture, During this time, during the cultivation, the cells that cause morphological changes to the pulpy mycelial power pellets are efficiently changed so that the viscosity of the subsequent culture solution becomes extremely high. Rise is suppressed. Therefore, it becomes possible to produce PUFAs more efficiently.
- the liquid medium is inoculated with the spores, mycelia of the strain, or the seed culture solution obtained by culturing in advance or the cells recovered from the seed culture.
- the main culture is performed.
- a liquid medium as the carbon source, commonly used ones such as glucose, fructose, xylose, sucrose, maltose, soluble starch, molasses, glycerol, mannitol, saccharified starch, etc. are used. Yes, but not limited to these.
- the unsaturated fatty acid precursor for example, a hydrocarbon such as hexadecane or octadecane; a fatty acid such as oleic acid or linoleic acid or a salt thereof, or Fatty acid esters such as ethyl ester, glycerin fatty acid ester, sorbitan fatty acid ester; or fats and oils such as olive oil, soybean oil, rapeseed oil, cottonseed oil or coconut oil can be used alone or in combination.
- the amount of added force of the substrate is 0.001 to 10%, preferably 0.5 to 10%, based on the medium.
- the culture temperature of the microorganism in the present invention varies depending on the microorganism used.
- the temperature is set to 5 to 40 ° C, preferably 20 to 30 ° C, and after culturing at 20 to 30 ° C to proliferate the cells, the cultivation is continued at 5 to 20 ° C to continue the unsaturated fatty acid. Can also be produced.
- Such temperature control can also increase the proportion of highly unsaturated fatty acids in the produced fatty acids.
- aeration and agitation culture shaking culture, solid culture, or stationary liquid culture is performed, and in main culture, aeration and agitation culture are performed.
- the medium pH at the start of main culture is adjusted to 5 to 7, preferably 5.5 to 6.5.
- the main culture period is usually 2 to 30 days, preferably 5 to 20 days, more preferably 5 to 15 days.
- Cultivation is performed using a culture vessel equipped with a stirring blade.
- Microorganisms belonging to the genus Mortierella subgenus Mortierella are known as microorganisms capable of producing fats and oils (triglycerides) containing arachidonic acid as a main constituent fatty acid.
- the present inventors have carried out mutation treatment on the above-mentioned strain to produce microorganisms (JP-A-5-91887) capable of producing fats and oils (triglycerides) whose main constituent fatty acid is dihomo ⁇ -linolenic acid (JP-A-5-91887), Microorganisms capable of producing fats and oils (triglycerides) mainly composed of saturated fatty acids are obtained (JP-A-5-91888).
- microorganism W098Z394678
- productivity can be improved by culturing by the culture method of the present invention.
- the pellet-like cell is one of the fungal forms of actinomycetes when cultured in a liquid medium, and is an aggregate of spherical or spindle-shaped mycelium having an average diameter of 0.2 to several millimeters. Showing the body.
- the morphogenesis of the cells into pellets is promoted by performing stirring with a small stirring shear force for a predetermined time from the start of the culture.
- the dissolved oxygen concentration (DO) in the medium begins to decrease with the growth of the cells, but the stirring power and aeration immediately before reaching the lower limit DO value (approximately 50%) that does not affect the productivity of PUFAs. Adjust the amount to maintain the DO value.
- the arachidonic acid-producing bacterium Mortierella alpina 1S-4 strain (Mortierella alpina IS 4 strain) was cultured in a 10 kL culture tank.
- the agitation power consumption was measured when operating at various agitation speeds under the conditions of culture volume of 6 kL and aeration lwm. The results are shown in the table below.
- M. alpina IS Spore suspension of 4 strains is inoculated into 0.1 vol.% Of yeast extract 1.0%, glucose 2.0%, pH 6.3 medium, reciprocal shaking 100 rpm, temperature 28 ° C Under this condition, seed culture (first stage) was started and cultured for 3 days.
- a medium for main culture was prepared in a 10 kL aeration and stirring tank (inner diameter of culture tank: 1.8 m).
- a 4500 L medium (medium A: soybean powder 336 kg, KH PO 16.
- the value of each parameter at the start of culture was determined as follows.
- Vs ° - 67 0.03 [( m / sec) 0 - 67]
- Vs ° - 67 0.130 [( m / sec) 0 '67]
- the medium was fed as shown below, and the main culture was performed for 306 hours.
- the cells were sterilized at 120 ° C for 20 minutes, and then wet cells were collected with a continuous dehydrator, and the moisture content was obtained by hot air drying (hot air temperature 120 ° C) with a vibrating fluidized bed dryer. Dried to 2 wt%.
- the dried cells were cooled to 40 ° C by supplying air at room temperature in a fluidized bed, and then dried cells were transported to the filling site using an air transporter.
- the obtained dried cells were filled into an aluminum bouch container bag having a volume of about lm 3 together with nitrogen gas, and the bag mouth was heat-sealed and stored in a refrigerator room at 10 ° C or lower.
- Seed culture was performed in the same manner as in Example 3 to prepare a medium for main culture.
- the main culture was carried out under the same conditions as in Example 3 except that the stirring conditions at the start of the culture were set to various conditions as shown in the table below.
- Example 5 Influence of aeration volume at the start of culture
- Seed culture was performed in the same manner as in Example 3 to prepare a medium for main culture.
- the main culture was carried out under the same conditions as in Example 3 except that the aeration conditions at the start of the culture were set to various conditions as shown in the table below.
- the aeration rate was set higher than that at the start of culture, so the foaming was much higher than that of Ex. It was recognized until the eyes. Therefore, in order to suppress foaming, a method of intermittently stopping ventilation was adopted.
- the air line velocity Vs in the present embodiment is the air line velocity in a state where air is ventilated, and is not an integrated air flow rate average value considering the intermittent air method.
- the DO value is the DO concentration (critical DO concentration) at which the decrease in DO caused by ventilation stops losing a linear relationship over time.
- the critical DO concentration was determined beforehand by culturing under the same conditions and using a dynamic measurement method ("Basics of Fermentation Engineering (1988), Academic Publishing Center, Fumihiro Ishizaki").
- Seed culture was performed in the same manner as in Example 3 to prepare a medium for main culture.
- the temperature was 26 ° C
- the internal pressure was 200 kPa
- Vs ° -67 0.03 [(m / sec) 0 '67 ]
- Vs ° - 67 0.042 [( m / sec) 0 - 67]
- the stirring power PZV was increased to 1493 WZm 3 until 084 (mZsec).
- the values of each parameter with the aeration stirring increased were determined as follows.
- Vs ° - 67 0.191 [( m / sec) 0 '67]
- KLA ( (P / V) 095 Vs ° - 67): 198 [. (W / m 3 95 (m / sec 67]
- Vs ° - 67 0.03 [( m / sec) 0 - 67]
- KLA (P / V) 095 Vs ° - 67): 2.67 [(W / m 3) 0 '95 ⁇ (m / sec) 0' 67]
- Vs ° - 67 0.130 [( m / sec) 0 '67]
- Mortierella alpina SAM1860 strain was used as a dihomo- ⁇ -linolenic acid-producing bacterium.
- the stock strain is inoculated into a 1% yeast extract, 2% glucose, and pH 6.3 medium prepared in a flask, and seed culture (first stage) is performed at 100 rpm and 28 ° C for 3 days. It was.
- 30L of a medium of yeast extract 1%, glucose 2%, soybean oil 0.1%, pH 6.3 is prepared in a 50L aeration and agitation culture tank, and the culture solution of the previous seed culture (first stage) is added thereto.
- seed culture (second stage) was performed for 2 days under the conditions of a stirring speed of 200 rpm, a temperature of 28 ° C., and a tank pressure of 150 kPa.
- the main culture was started with a liquid volume of 4000L.
- Vs 0 67 0.0871 [(m / sec) 0 '67 ]
- KLA (P / V 95 Vs 0 '67 ): 76.3 [(W / m 3 ) 0 ' 95 ⁇ (m / sec) 0 '67 ]
- the main culture was performed for 160 hours while performing glucose supplementation during the culture.
- the dihomo ⁇ -linolenic acid production concentration at the end of the culture was 7.0 g / L.
- Mortierella alpina SAM2086 strain was used as a mead acid producing bacterium.
- the stock strain was inoculated into a 1% yeast extract, 2% glucose, pH 6.3 medium prepared in a flask, and seed culture (first stage) was performed for 3 days under the conditions of 100 rpm and 28 ° C.
- seed culture (second stage) was performed for 2 days under the conditions of a stirring speed of 200 rpm, a temperature of 28 ° C., and a tank pressure of 15 OkPa.
- Vs 0 67 0.0871 [(m / sec) 0 '67 ]
- KLA (P / V 95 Vs 0 '67 ): 67.4 [(W / m 3 ) 0 ' 95 ⁇ (m / sec) 0 '67 ]
- the main culture was performed for 376 hours while adding glucose during the culture.
- the mead acid production concentration at the end of the culture was 6.0 g / L.
- FIG. 1 A plot of the relationship between the amount of arachidonic acid produced in each culture and the KLA value.
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Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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AU2005281109A AU2005281109B2 (en) | 2004-09-06 | 2005-09-05 | Method of culturing a microorganism |
CA2579154A CA2579154C (en) | 2004-09-06 | 2005-09-05 | Method of culturing a microorganism |
ES05781593T ES2387680T3 (es) | 2004-09-06 | 2005-09-05 | Método de cultivo de hongos |
EP05781593A EP1795586B1 (en) | 2004-09-06 | 2005-09-05 | Method of fungus culturing |
US11/662,015 US9701990B2 (en) | 2004-09-06 | 2005-09-05 | Method of culturing a microorganism under controlled agitation and aeration conditions |
DK05781593.8T DK1795586T3 (da) | 2004-09-06 | 2005-09-05 | Fremgangsmåde til svampedyrkning |
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JP2004-258151 | 2004-09-06 | ||
JP2004258151A JP4624040B2 (ja) | 2004-09-06 | 2004-09-06 | 菌体培養方法 |
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US (1) | US9701990B2 (ja) |
EP (2) | EP1795586B1 (ja) |
JP (1) | JP4624040B2 (ja) |
KR (1) | KR101214882B1 (ja) |
CN (1) | CN100482779C (ja) |
AU (1) | AU2005281109B2 (ja) |
CA (1) | CA2579154C (ja) |
DK (1) | DK1795586T3 (ja) |
ES (1) | ES2387680T3 (ja) |
MY (1) | MY147430A (ja) |
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US20080064076A1 (en) * | 2006-09-11 | 2008-03-13 | Saucedo Victor M | Dissolved Oxygen Profile to Increase Fermentation Productivity and Economics |
US8889907B2 (en) | 2008-03-14 | 2014-11-18 | Mitsubishi Rayon Co., Ltd. | Process for production of amide compounds |
US8207363B2 (en) | 2009-03-19 | 2012-06-26 | Martek Biosciences Corporation | Thraustochytrids, fatty acid compositions, and methods of making and uses thereof |
DK2526197T3 (en) | 2010-01-19 | 2018-10-01 | Dsm Ip Assets Bv | MICRO; PRODUCING EICOSAPENTAIC ACID AND DOCOSAHEXAENIC ACID, FATIC ACID COMPOSITIONS, AND METHODS FOR PREPARING AND USING THEREOF |
CN105410925A (zh) | 2011-07-21 | 2016-03-23 | 帝斯曼知识产权资产管理有限公司 | 脂肪酸组合物 |
JP6740590B2 (ja) * | 2015-10-23 | 2020-08-19 | 株式会社デンソー | 光合成微生物の培養装置及び培養方法 |
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JPH0591888A (ja) | 1991-09-30 | 1993-04-16 | Suntory Ltd | オメガ9系高度不飽和脂肪酸およびこれを含有する脂質の製造方法 |
JPH0591887A (ja) | 1991-09-30 | 1993-04-16 | Suntory Ltd | ジホモ−γ−リノレン酸及びこれを含有する脂質の製造方法 |
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US6985229B2 (en) | 2002-05-30 | 2006-01-10 | Agere Systems, Inc. | Overlay metrology using scatterometry profiling |
EP2966172B1 (en) * | 2002-10-11 | 2018-02-21 | Nippon Suisan Kaisha, Ltd. | Process for producing microbial fat or oil having lowered unsaponifiable matter content and said fat or oil |
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2004
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- 2005-09-05 EP EP05781593A patent/EP1795586B1/en active Active
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- 2005-09-05 WO PCT/JP2005/016244 patent/WO2006028048A1/ja active Application Filing
- 2005-09-05 DK DK05781593.8T patent/DK1795586T3/da active
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- 2005-09-05 CN CNB2005100991081A patent/CN100482779C/zh active Active
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- 2005-09-05 EP EP10015741A patent/EP2330183A1/en not_active Withdrawn
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TSUJIMURA H. AND MATSUMOTO S.: "Ryudo Kaiseki o Kanyo shita Shij kin Baiyo no Scale up. (Scale-up of mycelial fermentation based on analysis of fluid velocity distribution)", BIOSCIENCE & INDUSTRY, vol. 52, no. 10, 1994, pages 805 - 807, XP002998822 * |
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MY147430A (en) | 2012-12-14 |
DK1795586T3 (da) | 2012-08-13 |
CA2579154C (en) | 2013-07-09 |
ES2387680T3 (es) | 2012-09-28 |
EP2330183A1 (en) | 2011-06-08 |
US9701990B2 (en) | 2017-07-11 |
TW200613546A (en) | 2006-05-01 |
JP2006067964A (ja) | 2006-03-16 |
JP4624040B2 (ja) | 2011-02-02 |
US20080311645A1 (en) | 2008-12-18 |
EP1795586A4 (en) | 2007-11-07 |
CN100482779C (zh) | 2009-04-29 |
CA2579154A1 (en) | 2006-03-16 |
KR101214882B1 (ko) | 2012-12-24 |
AU2005281109A1 (en) | 2006-03-16 |
EP1795586A1 (en) | 2007-06-13 |
EP1795586B1 (en) | 2012-05-23 |
CN1746290A (zh) | 2006-03-15 |
TWI371486B (ja) | 2012-09-01 |
AU2005281109B2 (en) | 2011-06-09 |
KR20070068357A (ko) | 2007-06-29 |
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