WO2011099595A1 - (s)-1,1,1-トリフルオロ-2-プロパノールの工業的な製造方法 - Google Patents
(s)-1,1,1-トリフルオロ-2-プロパノールの工業的な製造方法 Download PDFInfo
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- WO2011099595A1 WO2011099595A1 PCT/JP2011/052981 JP2011052981W WO2011099595A1 WO 2011099595 A1 WO2011099595 A1 WO 2011099595A1 JP 2011052981 W JP2011052981 W JP 2011052981W WO 2011099595 A1 WO2011099595 A1 WO 2011099595A1
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- trifluoro
- propanol
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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
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
- C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
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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
- C12N1/14—Fungi; Culture media therefor
- C12N1/16—Yeasts; 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
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/80—Vectors or expression systems specially adapted for eukaryotic hosts for fungi
- C12N15/81—Vectors or expression systems specially adapted for eukaryotic hosts for fungi for yeasts
Definitions
- the present invention relates to an industrial process for producing (S) -1,1,1-trifluoro-2-propanol which is important as an intermediate for medicines and agricultural chemicals.
- (S) -1,1,1-trifluoro-2-propanol is an important compound as an intermediate for various medicines and agricultural chemicals.
- Alternative methods have been investigated.
- (S) -1,1,1-trifluoro-2-propanol having an enantiomeric excess of 99% ee or more is converted into 1,1,1-trifluoroacetone using alcohol dehydrogenase.
- Patent Document 2 discloses that 93,99% ee (S) -1,1 is obtained by reducing 1,1,1-trifluoroacetone with a commercially available dry baker's yeast.
- 1-trifluoro-2-propanol is disclosed in Patent Document 3, in which microorganisms or transformants that functionally express enzymes such as alcohol dehydrogenase and carbonyl reductase, or processed products thereof are used.
- Disclosed is a method for producing (S) -1,1,1-trifluoro-2-propanol, which comprises a step of acting on 1,1,1-trifluoroacetone. That.
- Non-Patent Document 1 (S) -1,1,1-trifluoro-2-propanol is reduced to about 80% ee by reducing 1,1,1-trifluoroacetone using dry baker's yeast.
- Non-Patent Document 2 by reducing 1,1,1-trifluoroacetone using alcohol dehydrogenase, (S) -1,1,1-trifluoro- A process for obtaining 2-propanol is disclosed.
- Patent Document 1 use (S) -1,1,1-trifluoro-2 having high optical purity by using a transformant in which a specific gene is introduced into a microorganism. -Propanol is obtained.
- transformants may have unexpected traits due to the random introduction of genes, and there is a risk that products derived from them will be mixed into products as impurities, and if animals are diffused in nature, wild animals and plants Therefore, it is not always easy to carry out, because safety is proved and special equipment for preventing the diffusion of the microorganism is required.
- Patent Document 2 uses a commercially available dried baker's yeast, and therefore does not require an original culture facility, and can easily obtain microorganisms.
- the reaction requires 10 times the amount of microorganisms relative to the substrate, it is difficult to say that the efficiency of the desired reduction reaction is high, and a large amount of waste is also a problem.
- it is necessary to heat the microorganisms, and when assuming a scale on a large scale, it is very difficult to adjust the required delicate temperature. It was difficult to adopt.
- Non-Patent Document 1 has a low optical purity of about 80% ee, and more than 300 times the amount of microorganisms with respect to the substrate, which is difficult to adopt from the viewpoint of practicality and productivity.
- An object of the present invention is to provide a method capable of producing (S) -1,1,1-trifluoro-2-propanol economically and simply on an industrial scale.
- the present inventors have achieved a production amount that can be adopted industrially by allowing a specific microorganism to act on 1,1,1-trifluoroacetone (S).
- S 1,1,1-trifluoroacetone
- the inventors have found a method capable of producing 1,1,1-trifluoro-2-propanol with high optical purity and high yield, and have completed the present invention.
- the present invention provides the inventions described in the following [Invention 1] to [Invention 7].
- [Invention 1] 1,1,1-trifluoroacetone represented by the formula [1] (S) -1,1,1-trifluoro-2-propanol represented by the formula [2] by allowing a microorganism found in nature to act in a natural state.
- a manufacturing method for obtaining Such microorganisms include Hansenula polymorpha, Pichia anomala, Candida parapsilosis, Candida mycoderma, Pichia naganishii, and Candida cytoana.
- invention 3 A suspension of microorganisms found in nature so as to have a microorganism density of 10 7 to 10 11 cfu / ml is prepared, and a suspension of 1,1,1-trimethyl is added to the suspension after preparation.
- the (S) -1,1,1-trifluoric acid according to invention 1 or 2 characterized in that fluoroacetone is added so that the concentration of the acetone is 0.05 to 3% (w / v). Method for producing fluoro-2-propanol.
- invention 5 (S) -1,1,1-trifluoro-2-propanol according to any one of inventions 1 to 4, characterized in that the pH during the reaction is in the range of 6.0 to 9.0. Manufacturing method.
- invention 6 Any one of the inventions 1 to 5, wherein the coenzyme NAD (P) H used for the reduction reaction is regenerated by the microorganism's own dehydrogenase and no new coenzyme NAD (P) H is added from the outside.
- S -1,1,1-trifluoro-2-propanol production method according to any one of the above.
- invention 7 (S) -1,1,1-trifluoro- according to any one of inventions 1 to 6, characterized in that glucose is used as a substrate for dehydrogenase in the regeneration of coenzyme NAD (P) H. A method for producing 2-propanol.
- the coenzyme NAD (P) H used for the reduction reaction can be regenerated by the microorganism's own dehydrogenase, it is not necessary to newly add the coenzyme NAD (P) H from the outside. (Of course, the reaction can also be carried out by adding the coenzyme NAD (P) H).
- microorganisms found in nature refers to cells that have not been genetically manipulated such as transformation, and are wild strains that are stored in various microorganism depository institutions.
- the “natural state” means that the cultured microorganism is used as it is, and means that the operation of crushing the microorganism to separate the enzyme and the cell treatment such as heat treatment and chemical treatment are not performed. .
- the concentration of 1,1,1-trifluoroacetone means the concentration (w / v) of the acetone in the suspension of the microorganism (concentration of the reduced product is considered). Not (excluded)) does not define the total amount of acetone added throughout the reaction.
- a microorganism that naturally gives a target substance with high optical purity is selected from microorganisms found in nature, and the cultured cells are used as they are in the reaction and suspended in a specific density range.
- (S) -1,1,1-trifluoro-2 having a high optical purity ( ⁇ 100% ee) is obtained.
- the microorganism used in the present invention can efficiently reduce the carbonyl group of 1,1,1-trifluoroacetone to a hydroxyl group in a stereoselective manner, and reacts with the substrate 1,1,1-trifluoroacetone.
- (S) -1,1,1-trifluoro-2-propanol with high optical purity and high productivity, which has been difficult to industrially devise by devising a method of adding at a concentration suitable for Can do.
- 1,1,1-trifluoroacetone used in the present invention is a known compound, and may be appropriately prepared by those skilled in the art based on the prior art, or commercially available ones may be used.
- microorganisms that can obtain (S) -1,1,1-trifluoro-2-propanol are Hansenula polymorpha, Pichia anomala, Candida parapsilosis, Candida mycoderma, Pichia naganishii, Candida saitoana, Cryptococcus curvatus, Matterosora ), Saccharomyces bayanus, and Pichia membranaefaciens, preferably Hansenula polymorpha, Candida • Candida parapsilosis, Saturnospora dispora, Saccharomyces bayanus, Pichia membranaefaciens, more preferably Hansenula sen morpha or polymorpha It is Pichia membranaefaciens.
- microorganisms have been deposited with various institutions with the following deposit numbers. These microorganisms are generally commercially available and can be easily obtained by those skilled in the art.
- a medium solid medium or liquid medium
- a reduction reaction of water-soluble 1,1,1-trifluoroacetone is performed.
- a liquid medium is preferred.
- the medium is a carbon source such as glucose, sucrose, maltose, lactose, fructose, sucrose, trehalose, mannose, mannitol, dextrose and other sugars, methanol, ethanol, propanol, butanol, pentanol, hexanol, glycerol and other alcohols, Organic acids such as acid, glutamic acid and malic acid are used, and ammonium salt, peptone, polypeptone, casamino acid, urea, yeast extract, malt extract, corn steep liquor and the like are used as nitrogen sources. Furthermore, nutrient sources such as other inorganic salts such as potassium dihydrogen phosphate and dipotassium hydrogen phosphate can be added as appropriate.
- nitrogen source and inorganic salt it is preferable to add an amount sufficient for the microorganisms to grow and not inhibit growth, and usually 5 to 80 g, preferably 10 to 1 L of the medium. Add ⁇ 40g. The same applies to the nitrogen source, and it is preferable to add an amount that allows the microorganism to grow sufficiently and does not inhibit the growth. Usually, it is 5 to 60 g, preferably 10 to 50 g, and the inorganic salt as a nutrient source. It is necessary to add elements necessary for the growth of microorganisms. However, since growth is inhibited at a high concentration, usually 0.001 to 10 g is added to 1 L of the medium. In addition, these can be used combining several types according to microorganisms.
- the pH in the medium needs to be adjusted within a range suitable for the growth of microorganisms, and is usually 4.0 to 10.0, preferably 6.0 to 9.0.
- the temperature range in the culture needs to be adjusted in a range suitable for the growth of microorganisms, and is usually 10 to 50 ° C., preferably 20 to 40 ° C.
- vvm means the aeration amount with respect to the medium volume per minute. Volume / volume / minute), more preferably 0. Perform at 5-2 vvm.
- air with an increased oxygen concentration may be ventilated using an oxygen generator or the like.
- the medium volume should be set to 20% or less with respect to the volume of the instrument, and an aeration plug such as a cotton plug or a silicone plug may be attached. .
- an aeration plug such as a cotton plug or a silicone plug may be attached.
- the stirring ability of the apparatus is preferably 10 to 100%, more preferably 20 to 90%.
- a small-scale apparatus such as a test tube or a flask, it may be carried out using a shaker, preferably 50 to 300 rpm, more preferably 100 to 250 rpm.
- the culture time may be a time required for the growth of microorganisms to converge, and is 6 to 72 hours, preferably 12 to 48 hours.
- a suspension in which the microorganism is cultured can be directly used for the reaction. If the components produced during the cultivation adversely affect the reduction reaction, the cells are isolated from the culture solution by an operation such as centrifugation, and the resulting cells (wet cells) are used to resuspend the cells. May be prepared and used in the reaction.
- the method of adding 1,1,1-trifluoroacetone to the suspension it is preferable to add sequentially so as to maintain a preferable range while monitoring the reduction reaction.
- the total amount of 1,1,1-trifluoroacetone added has a concentration at which the reaction converges due to the accumulation of products. Therefore, it is necessary to adjust a suitable range according to the microorganism. 0.1 to 30% (w / v) is preferable with respect to the liquid, and 0.2 to 20% (w / v) is more preferable.
- the reaction temperature must be maintained in a range suitable for the enzymatic reaction of the selected microorganism, and is usually 5 to 40 ° C, preferably 20 to 30 ° C. Also, the pH during the reaction needs to be maintained within a range suitable for the enzymatic reaction of the selected microorganism, and is usually 4.0 to 10.0, preferably 6.0 to 9.0.
- reaction time is determined depending on how the target product is produced, and is usually 6 to 312 hours.
- the coenzyme NAD (P) H (hydrogen donor) used for the reduction reaction is regenerated from the coenzyme NAD (P) using the dehydrogenase possessed by the microorganism. It is preferable to carry out the reduction reaction separately in the presence of saccharides and alcohols other than glucose. For example, the saccharides and alcohols described as the carbon source described in the section of microbial culture are used. Is possible. Glucose may be added directly to the suspension of bacterial cells, or may be added in advance to the suspension after mixing with 1,1,1-trifluoroacetone as a substrate. Coenzyme NAD (P) H can be reduced by adding a commercially available one, but it is very expensive and is not economical.
- the present inventors regenerate by the microorganism itself without newly adding the coenzyme NAD (P) H from the outside, thereby increasing the number of reductions per cell, and economically and with high productivity, the target product can be obtained.
- the coenzyme NAD (P) H held in the cell itself is directly used in the reduction reaction, and the NAD (P) generated after the reaction is regenerated to the coenzyme NAD (P) H by the microorganism's own dehydrogenase. Is possible.
- coenzyme NAD (P) H without newly adding coenzyme NAD (P) H from the outside” means that the amount of coenzyme NAD (P) H is less than 1 ⁇ mol / L with respect to the culture solution. More preferably, it is less than 0.1 ⁇ mol / L (excluding the coenzyme possessed by the cells).
- the embodiment of producing the target product without intentionally adding the coenzyme NAD (P) H into the reaction system is “regenerating the coenzyme NAD (P) H with the dehydrogenase of the microorganism itself, This is typical and extremely preferable, in that no new coenzyme NAD (P) H is added from the outside.
- the glucose added here must be added in an amount that does not inhibit the reaction, and is preferably added so as to maintain the concentration in the suspension at 0.1 to 10% (w / v).
- concentration control device with a sugar concentration sensor or the like to perform the reaction while always maintaining the glucose concentration in the reaction system at 2%, the reaction proceeds smoothly. Therefore, it is one of the particularly preferred embodiments in the present invention.
- the method of the present invention is suitable for an industrial production method when converting 1,1,1-trifluoroacetone to (S) -1,1,1-trifluoro-2-propanol. By adopting the conditions, it is possible to manufacture in large quantities.
- an S-form alcohol that is, (S) -1,1,1-trifluoro-2-propanol, has an optical purity that can be practically used, and is 85% ee or more, particularly preferably 98% ee. This can be obtained.
- a general isolation method in organic synthesis can be employed.
- a crude product can be obtained by performing ordinary post-treatment operations such as extraction with an organic solvent.
- the reaction-finished liquid or the filtered washing liquid after removing the bacterial cells as necessary can be easily and efficiently recovered by subjecting it to distillation.
- the obtained crude product can be subjected to purification operations such as dehydration, activated carbon, distillation, recrystallization, column chromatography and the like, if necessary. It is also possible to perform an operation to further increase the optical purity of the obtained product.
- a liquid medium comprising a composition of 1000 ml of ion exchange water, 10 g of glucose, 5 g of polypeptone, 3 g of yeast extract, 3 g of malt extract, 3 g of potassium dihydrogen phosphate and 2 g of dipotassium hydrogen phosphate was prepared, and a test tube ( ⁇ 1.4 cm ⁇ 18 cm 5 ml each, and steam sterilized at 121 ° C. for 15 minutes.
- 1,1,1-trifluoroacetone was prepared using Hansenula polymorpha NBRC0799, which has a high optical purity and gives the target product in a high yield.
- the results of the reaction in which the acetone was added so that the total amount with respect to the bacterial cell suspension was 2% (w / v) (Example 3) and 5% (w / v) (Example 4) were as follows: Show.
- This liquid medium was inoculated with 80 ml of a 1.4 ⁇ 10 9 cfu / ml suspension of Hansenula polymorpha NBRC0799 precultured with 100 ml of the same composition, and cultured for 24 hours at 28 ° C., aeration 1 vvm, and stirring 500 rpm.
- a suspension of 1.7 ⁇ 10 9 cfu / ml (41 g / L as wet weight) was prepared. Adjustment of pH at this time was performed using ammonia water, and it adjusted to 6.5.
- This liquid medium was inoculated with 80 ml of a 2.0 ⁇ 10 9 cfu / ml suspension of Hansenula polymorpha NBRC0799 precultured with 100 ml of the same composition, and cultured at 28 ° C., aeration 1 vvm, and stirring at 500 rpm for 24 hours.
- a suspension of 4.3 ⁇ 10 9 cfu / ml (86 g / L as wet weight) was prepared. Adjustment of pH at this time was performed using ammonia water, and it adjusted to 6.5.
- liquid medium prepared at the same composition ratio was put into a 10 L fermenter (manufactured by Maruhishi Bio-Engine) and steam sterilized at 121 ° C. for 60 minutes. This was inoculated with 180 ml of the cell suspension prepared in advance, and cultured for 27 hours at 28 ° C., aeration 1 vvm, and stirring 250 rpm to prepare a 1.2 ⁇ 10 9 cfu / ml suspension. The pH during the culture was adjusted using aqueous ammonia and adjusted to 6.5.
- a 1000 L fermenter for performing the main culture was an aeration and stirring type culture device manufactured by Komatsugawa Kako.
- the culture tank was filled with 370 L of water, and 9 kg of yeast extract, 6 kg of peptone, 0.96 kg of potassium dihydrogen phosphate and 0.5 kg of dipotassium hydrogen phosphate were dissolved, and steam sterilization was performed at 121 ° C. for 60 minutes.
- To this was added 30 L of water prepared in a separate container and 13 kg of water-containing crystal glucose solution, 5000 ml of the cell suspension prepared in the pre-culture was inoculated, and 24 hours at 28 ° C., aeration 100 L / min, stirring 200 rpm. Time culture was performed.
- the cell suspension grown to 2.7 ⁇ 10 9 cfu / ml was changed to 1 in 56.5 kg of ion-exchanged water prepared in a separate container by changing the aeration to 20 L / min and stirring to 50 rpm.
- An aqueous solution in which 25 kg of 1,1-trifluoroacetone and 43.5 kg of water-containing crystal glucose were dissolved was added so that the glucose concentration was maintained at 2% while appropriately measuring the sugar concentration.
- the reduction of the substrate by the microorganism was monitored every 24 hours, and after 168 hours, it was confirmed that the conversion rate was 91.4%, and the reaction was completed.
- the pH during culture and reaction was adjusted to 6.5 using aqueous ammonia.
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Abstract
Description
式[1]で表される1,1,1-トリフルオロアセトン
係る微生物としてハンゼヌラ・ポリモルファ(Hansenula polymorpha)、ピキア・アノマラ(Pichia anomala)、キャンディダ・パラプシロシス(Candida parapsilosis)、キャンディダ・マイコデルマ(Candida mycoderma)、ピキア・ナガニシィ(Pichia naganishii)、キャンディダ・サイトアナ(Candida saitoana)、クリプトコッカス・カルバタス(Cryptococcus curvatus)、サターノスポラ・ディスポラ(Saturnospora dispora)、サッカロマイセス・バヤヌス(Saccharomyces bayanus)、及びピキア・メンブラナエファシエンス(Pichia membranaefaciens)からなる群より選ばれる少なくとも1種の微生物を用いることを特徴とする、(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
微生物が、以下に示す受託番号を有することを特徴とする、発明1に記載の(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
微生物の密度を107~1011cfu/mlとなる様に自然界から見出された微生物の天然の状態の懸濁液を調製し、調製後の該懸濁液に1,1,1-トリフルオロアセトンを、該アセトンの濃度が0.05~3%(w/v)となる様に添加することを特徴とする、発明1又は2に記載の(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
反応温度が20~30℃の範囲で行うことを特徴とする、発明1乃至3の何れか1つに記載の(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
反応時のpHを6.0~9.0の範囲で行うことを特徴とする、発明1乃至4の何れか1つに記載の(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
還元反応に利用される補酵素NAD(P)Hを微生物自身の脱水素酵素で再生し、外部から新たに補酵素NAD(P)Hを加えないことを特徴とする、発明1乃至5の何れか1つに記載の(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
補酵素NAD(P)Hの再生における脱水素酵素の基質としてグルコースを用いることを特徴とする、発明1乃至6の何れか1つに記載の(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
イオン交換水1000ml、グルコース10g、ポリペプトン5g、酵母エキス3g、麦芽エキス3g、リン酸二水素カリウム3g、リン酸水素二カリウム2gの組成からなる液体培地を調製し、試験管(φ1.4cm×18cm)に5mlずつ分注し、121℃で15分間の蒸気滅菌を行った。
光学純度の分析はガスクロマトグラフィー法により行った。ガスクロマトグラフィーのカラムにはBGB社製のBGB-174(30m×0.25mm×0.25mm)を用い、キャリアガスはヘリウム、圧力は100kPa、カラム温度は60~85℃(1℃/min)~110℃(5℃/min)、気化室・検出器(FID)温度は230℃の分析条件で得られるピークの面積により光学純度を算出した。1,1,1-トリフルオロ-2-プロパノールのそれぞれのエナンチオマーの保持時間は、R体が22.1min、S体が23.9minであった。
イオン交換水1000ml、グルコース10g、ポリペプトン5g、酵母エキス3g、麦芽エキス3g、リン酸二水素カリウム3g、リン酸水素二カリウム2gの組成からなる液体培地を調製(pH 6.5)し、試験管(φ1.4cm×18cm)に5mlずつ分注し、121℃で20分間の蒸気滅菌を行った。
イオン交換水2000ml、グルコース40g、ペプトン20g、酵母エキス12g、麦芽エキス12g、リン酸二水素カリウム12g、リン酸水素二カリウム8gの組成からなる液体培地を調製し、容量5Lの発酵槽((株)丸菱バイオエンジ製、MDN型5L(S))に張り込み、121℃で60分間の蒸気滅菌を行った。この液体培地に同様の組成の100mlで前培養を行ったHansenula polymorpha NBRC0799の1.4×109cfu/mlの懸濁液を80ml接種し、28℃、通気1vvm、攪拌500rpmで24時間培養し、1.7×109cfu/ml(湿菌重として41g/L)の懸濁液を調製した。この
時のpHの調整はアンモニア水を用いて行い、6.5に調整した。培養終了後、通気を0.1vvm、攪拌を50rpmに変更し、別容器に準備した200mlのイオン交換水に1,1,1-トリフルオロアセトン50.08g、グルコース90gを溶解させたものを菌体懸濁液にペリスタポンプを用いて逐次的に添加した。微生物による基質の還元は24時間おきにモニタリングし、78時間後に収率が79.1%となっていることを確認した。この反応液を3Lの三角フラスコに回収し、20℃で5日間静置して追加反応を行った。5日後の収率は91.4%であった。
イオン交換水2000 ml、グルコース60g、ペプトン30g、酵母エキス50g、リン酸二水素カリウム4.8g、リン酸水素二カリウム2.5gの組成からなる液体培地を調製し、容量5Lの発酵槽((株)丸菱バイオエンジ製、MDN型5L(S))に張り込み、121℃で60分間の蒸気滅菌を行った。この液体培地に同様の組成の100mlで前培養を行ったHansenula polymorpha NBRC0799の2.0×109cfu/mlの懸濁液を80ml接種し、28℃、通気1vvm、攪拌500rpmで24時間培養し、4.3×109cfu/ml(湿菌重として86g/L)の懸濁液を調製した。この時のpHの調整はアンモニア水を用いて行い、6.5に調整した。培養終了後、通気を0.1vvm、攪拌を50rpmに変更し、別容器に準備した300mlのイオン交換水に1,1,1-トリフルオロアセトン125.2g、グルコース200gを溶解させたものをオンラインの糖濃度センサー(オンラインバイオセンサ BF-410、(株)バイオット製)を用いて、グルコース濃度を2%に維持する様にコンピュータプログラムで自動的に懸濁液に添加した。微生物による基質の還元は24時間おきにモニタリングし、168時間後に収率が94.9%となっていることを確認して反応を終了した。
前々培養として、水200 ml、グルコース6g、ペプトン3g、酵母エキス5g、リン酸二水素カリウム0.48g、リン酸水素二カリウム0.25gの組成からなる液体培地を調製し、容量500mLのバッフル付き三角フラスコに分注し、121℃で15分間の蒸気滅菌を行った。この液体培地にHansenula polymorpha NBRC0799の冷凍保存種菌を2ml接種し、ロータリーシェーカーを用いて28℃、160rpmで72時間の培養を行い、1.6×109cfu/mlの菌体懸濁液を調製した。
Claims (7)
- 式[1]で表される1,1,1-トリフルオロアセトン
係る微生物としてハンゼヌラ・ポリモルファ(Hansenula polymorpha)、ピキア・アノマラ(Pichia anomala)、キャンディダ・パラプシロシス(Candida parapsilosis)、キャンディダ・マイコデルマ(Candida mycoderma)、ピキア・ナガニシィ(Pichia naganishii)、キャンディダ・サイトアナ(Candida saitoana)、クリプトコッカス・カルバタス(Cryptococcus curvatus)、サターノスポラ・ディスポラ(Saturnospora dispora)、サッカロマイセス・バヤヌス(Saccharomyces bayanus)、及びピキア・メンブラナエファシエンス(Pichia membranaefaciens)からなる群より選ばれる少なくとも1種の微生物を用いることを特徴とする、(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。 - 微生物の密度を107~1011cfu/mlとなる様に自然界から見出された微生物の天然の状態の懸濁液を調製し、調製後の該懸濁液に1,1,1-トリフルオロアセトンを、該アセトンの濃度が0.05~3%(w/v)となる様に添加することを特徴とする、請求項1又は2に記載の(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
- 反応温度が20~30℃の範囲で行うことを特徴とする、請求項1乃至3の何れか1つに記載の(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
- 反応時のpHを6.0~9.0の範囲で行うことを特徴とする、請求項1乃至4の何れか1つに記載の(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
- 還元反応に利用される補酵素NAD(P)Hを微生物自身の脱水素酵素で再生し、外部から新たに補酵素NAD(P)Hを加えないことを特徴とする、請求項1乃至5の何れか1つに記載の(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
- 補酵素NAD(P)Hの再生における脱水素酵素の基質としてグルコースを用いることを特徴とする、請求項1乃至6の何れか1つに記載の(S)-1,1,1-トリフルオロ-2-プロパノールの製造方法。
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WO2016208699A1 (ja) * | 2015-06-25 | 2016-12-29 | セントラル硝子株式会社 | 光学活性含フッ素アルキルエチレンオキシドの工業的な製造方法 |
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CN104651243B (zh) * | 2015-02-03 | 2018-02-16 | 温州大学 | 膜醭毕赤酵母及其在手性合成(r)‑1,3‑丁二醇中的应用 |
JP6457841B2 (ja) * | 2015-03-03 | 2019-01-23 | 公立大学法人 富山県立大学 | キラル−1,1−ジフルオロ−2−プロパノールの工業的な製造方法 |
US10656722B2 (en) * | 2015-11-09 | 2020-05-19 | Carnegie Mellon University | Sensor system for collecting gestural data in two-dimensional animation |
EP4043005B1 (fr) | 2021-02-12 | 2023-12-20 | Chanel Parfums Beauté | Composition cosmétique comprenant un hydrolysat de levure |
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Cited By (3)
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JP2012005396A (ja) * | 2010-06-23 | 2012-01-12 | Toyama Prefecture | (r)−1,1,1−トリフルオロ−2−プロパノールの工業的な製造方法 |
WO2016208699A1 (ja) * | 2015-06-25 | 2016-12-29 | セントラル硝子株式会社 | 光学活性含フッ素アルキルエチレンオキシドの工業的な製造方法 |
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US9085780B2 (en) | 2015-07-21 |
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US20130005007A1 (en) | 2013-01-03 |
CN102762734A (zh) | 2012-10-31 |
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