CN105132471A - Method for producing photo-active chloro-benzene chloroethanol by virtue of microorganisms - Google Patents
Method for producing photo-active chloro-benzene chloroethanol by virtue of microorganisms Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- -1 chloro-benzene chloroethanol Chemical compound 0.000 title abstract description 3
- 244000005700 microbiome Species 0.000 title abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 13
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 36
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 28
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 22
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 22
- 239000000243 solution Substances 0.000 claims description 22
- 230000002210 biocatalytic effect Effects 0.000 claims description 18
- 240000008042 Zea mays Species 0.000 claims description 17
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 17
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 17
- 235000005822 corn Nutrition 0.000 claims description 17
- 238000009423 ventilation Methods 0.000 claims description 17
- 235000015097 nutrients Nutrition 0.000 claims description 16
- 125000000068 chlorophenyl group Chemical group 0.000 claims description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- 241000790917 Dioxys <bee> Species 0.000 claims description 11
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 11
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 11
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 11
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 11
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 11
- 229940041514 candida albicans extract Drugs 0.000 claims description 11
- 239000008103 glucose Substances 0.000 claims description 11
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 11
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 11
- 239000011591 potassium Substances 0.000 claims description 11
- 229910052700 potassium Inorganic materials 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 11
- 239000012138 yeast extract Substances 0.000 claims description 11
- FWDFNLVLIXAOMX-UHFFFAOYSA-N 2-chloro-1-(4-chlorophenyl)ethanone Chemical compound ClCC(=O)C1=CC=C(Cl)C=C1 FWDFNLVLIXAOMX-UHFFFAOYSA-N 0.000 claims description 8
- OWEGMIWEEQEYGQ-UHFFFAOYSA-N 100676-05-9 Natural products OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(OC2C(OC(O)C(O)C2O)CO)O1 OWEGMIWEEQEYGQ-UHFFFAOYSA-N 0.000 claims description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 7
- GUBGYTABKSRVRQ-PICCSMPSSA-N Maltose Natural products O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@@H](CO)OC(O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-PICCSMPSSA-N 0.000 claims description 7
- SRBFZHDQGSBBOR-LECHCGJUSA-N alpha-D-xylose Chemical compound O[C@@H]1CO[C@H](O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-LECHCGJUSA-N 0.000 claims description 7
- 230000035484 reaction time Effects 0.000 claims description 7
- 229960003487 xylose Drugs 0.000 claims description 7
- XZIIFPSPUDAGJM-UHFFFAOYSA-N 6-chloro-2-n,2-n-diethylpyrimidine-2,4-diamine Chemical compound CCN(CC)C1=NC(N)=CC(Cl)=N1 XZIIFPSPUDAGJM-UHFFFAOYSA-N 0.000 claims description 6
- 244000068988 Glycine max Species 0.000 claims description 6
- 235000010469 Glycine max Nutrition 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 6
- 239000000872 buffer Substances 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- 208000012839 conversion disease Diseases 0.000 claims description 6
- LOKCTEFSRHRXRJ-UHFFFAOYSA-I dipotassium trisodium dihydrogen phosphate hydrogen phosphate dichloride Chemical compound P(=O)(O)(O)[O-].[K+].P(=O)(O)([O-])[O-].[Na+].[Na+].[Cl-].[K+].[Cl-].[Na+] LOKCTEFSRHRXRJ-UHFFFAOYSA-I 0.000 claims description 6
- 239000011790 ferrous sulphate Substances 0.000 claims description 6
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 6
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 6
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 6
- 239000002953 phosphate buffered saline Substances 0.000 claims description 6
- 229940035044 sorbitan monolaurate Drugs 0.000 claims description 6
- 238000006555 catalytic reaction Methods 0.000 abstract description 8
- 239000008055 phosphate buffer solution Substances 0.000 abstract 1
- 239000005515 coenzyme Substances 0.000 description 7
- 239000002609 medium Substances 0.000 description 7
- 229920001817 Agar Polymers 0.000 description 6
- 239000008272 agar Substances 0.000 description 6
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- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The invention discloses a method for producing photo-active chloro-benzene chloroethanol by virtue of microorganisms, wherein the method is achieved by adding a phosphate buffer solution to a reaction tank, and implementing a biological catalysis reaction by virtue of tarlaromyces flavus cells. The method is high in product yield and high in enantiomeric excess rate, and the method is capable of solving production difficulties in an existing method.
Description
Technical field
The invention belongs to technology of pharmaceutical engineering field, be related specifically to Tarlaromyces flavus cell biocatalysis and prepare the chloro-phenyl of the chloro-1-(4-of chiral medicinal intermediate (S)-2-) technology of ethanol.
Background technology
The chloro-phenyl of the chloro-1-(4-of chirality (S)-2-) ethanol is the important intermediate of synthesis of chiral medicine, fine chemicals, agricultural chemicals product and other exotic materialss.Biocatalysis asymmetric reaction has environmental friendliness, mild condition, selectivity advantages of higher, prepares the first approach of chipal compounds as green high-efficient, is applied to the chipal compounds producing some high added values more and more.Biocatalysis prepares the chloro-phenyl of the chloro-1-(4-of chirality (S)-2-) ethanol has good application prospect.
Biocatalysis has the outstanding advantages such as catalytic efficiency is high, selectivity strong, mild condition, environmental friendliness, is the important method substituting and expand traditional organic chemical synthesis in process of sustainable development.Wherein chiral separation and asymmetric synthesis are the Application Areass of biocatalysis most magnetism.As in six large fermentoids of biological catalyst, lytic enzyme catalytic kinetics resolution of racemates can obtain quiral products, in industrial biocatalytic, play key player always.In recent years, oxydo-reductase application industrially obtained and increased rapidly.At present, the ratio adopting the industry of lytic enzyme Kinetic Resolution, biological reducing method and biological oxidation process to prepare optical activity chirality compound is 4:2:1.
Biological reducing method is for Kinetic Resolution, and maximum advantage is that theoretical yield can reach 100%, and Atom economy is good.But bioreduction needs the participation of coenzyme or cofactor, limit its application to a certain extent.Due to the dependent cause of coenzyme, in bioreduction, many Bian intact cells are as catalyzer, realize the purification procedures eliminating enzyme in body while coenzyme cyclic regeneration.
(S) the chloro-phenyl of the chloro-1-(4-of-2-) ethanol is the important chiral building block of synthesis of chiral medicine, fine chemicals, agricultural chemicals product.Existing method ubiquity low conversion rate, long reaction time, needs add expensive coenzyme, high in cost of production major defect, are difficult to carry out suitability for industrialized production.The present invention will adopt biomass cells catalysis to prepare the chloro-phenyl of the chloro-1-(4-of (S)-2-) ethanol.
Summary of the invention
The present invention adopts Tarlaromyces flavus cell catalysis to prepare the chloro-phenyl of the chloro-1-(4-of (S)-2-) ethanol, reaction formula is as follows:
2,4 '-dichloroacetophenone (1), through Tarlaromyces flavus catalyzed reaction, obtains the chloro-phenyl of the chloro-1-(4-of product (S)-2-) ethanol (2).Have multiple-microorganism can catalysis this reaction, through great many of experiments screening, finally determine adopt Tarlaromyces flavus as catalyzer because the effect of its catalyzed reaction is best, reaction yield, enantiomeric excess rate (ee%) are all very high.
Many Tarlaromyces flavus can carry out this reaction of biocatalysis, but its effect is different, differs greatly, and through experiment, the present invention selects Tarlaromyces flavus bacterial strain to be ATCC34594, its catalyzed reaction best results.
Because most oxydo-reductase is coenzyme NAD (P) H dependent form, and the coenzyme amount contained by cell itself may be less, therefore, when carrying out redox reaction, for promoting regenerating coenzyme, improving reaction efficiency, in reaction system, also adding cosubstrate form transformation system.Conventional cosubstrate kind is more, and the cosubstrate needed for different cell is different, and effect difference is very large, adopts several cosubstrate to combine, can obtain better effects, need carry out great many of experiments and could determine best cosubstrate.The cosubstrate that the present invention determines through great many of experiments is: wood sugar 15-17g/L, maltose 12-15g/L, Virahol 5-6%V/V (volumetric concentration).
Because substrate solubility is lower, so, add tensio-active agent to increase the solubleness of substrate.
developing medium:
1, seed culture medium composition is: corn steep liquor (with dry basis) content is 35-45g/L, yeast extract 10g/L, glucose 20g/L, ammonium sulfate 0.5-0.7g/L, magnesium sulfate 0.3-0.4g/L, phosphoric acid dioxy potassium 1.8-2.3g/L; The agar powder of 15g/L is added during preparation solid medium.
2, nutrient solution composition: corn steep liquor (with dry basis) content is 35-45g/L; analysis for soybean powder 3-4g/L; yeast extract 8-10g/L, glucose 18-22g/L, malt extract 20-25g; ammonium sulfate 0.5-0.7g/L; magnesium sulfate 0.3-0.4g/L, phosphoric acid dioxy potassium 1.8-2.3g/L, calcium carbonate 0.7g/L; ferrous sulfate 0.18g/L, manganous sulfate 0.025g/L; PH4.4.
2, solid medium composition: add the agar powder of 2% in liquid medium within.
Prepared by Tarlaromyces flavus cell.Tarlaromyces flavus through inclined-plane, shaking flask, seed tank culture obtain seed liquor; Fermentor tank adds nutrient solution, 121 DEG C of autoclavings 30 minutes, be cooled to 26-27 DEG C, Tarlaromyces flavus seed liquor is seeded to fermentor tank, inoculative proportion is 9-10%, and ventilation ratio is 0.9-1V/(V minute), cultivate 41-45 hour for 26-27 DEG C, wet Tarlaromyces flavus cell is obtained, as biocatalytic reaction catalyzer with filtering centrifuge is centrifugal.
Biocatalytic Conversion.Add phosphate buffered saline buffer in bottom ventilation stirred tank, pH is 5.4, adds substrate 2,4 '-dichloroacetophenone, makes concentration of substrate be 80-90g/L.Other compositions: corn steep liquor (with dry basis) content is 19-20g/L, sorbitan monolaurate 13-14g/L, wood sugar 15-17g/L, maltose 12-15g/L, Virahol 5-6%V/V (volumetric concentration), 121 DEG C of autoclavings 30 minutes; When being cooled to 27-28 DEG C, add wet Tarlaromyces flavus cell and make its concentration be 71-75g/L, ventilation ratio is 0.15-0.16V/(V minute), carry out biocatalytic reaction, the reaction times is 67-70 hour; After reaction terminates, leach cell, be extracted with ethyl acetate reaction solution, steam ethyl acetate, obtain the chloro-phenyl of the chloro-1-(4-of product (S)-2-) ethanol, reaction conversion ratio 98-99%, product yield 96-97%, enantiomeric excess rate 98.5-99%.
The present invention carries out the work and comprises bacterial strain selection, catalytic reaction condition optimization (temperature of reaction, air flow, pH), reaction medium selection and concentration optimization, comprises concentration of substrate, cosubstrate combination, kinds of surfactants and concentration etc.
embodiment 1
Seed culture medium composition is: corn steep liquor (with dry basis) content is 35-45g/L, yeast extract 10g/L, glucose 20g/L, ammonium sulfate 0.5-0.7g/L, magnesium sulfate 0.3-0.4g/L, phosphoric acid dioxy potassium 1.8-2.3g/L; The agar powder of 15g/L is added during preparation solid medium.
Nutrient solution composition is: corn steep liquor (with dry basis) content is 35-45g/L; analysis for soybean powder 3-4g/L; yeast extract 8-10g/L, glucose 18-22g/L, malt extract 20-25g; ammonium sulfate 0.5-0.7g/L; magnesium sulfate 0.3-0.4g/L, phosphoric acid dioxy potassium 1.8-2.3g/L, calcium carbonate 0.7g/L; ferrous sulfate 0.18g/L, manganous sulfate 0.025g/L; PH4.4.
Wet Tarlaromyces flavus cell preparation process is as follows: Tarlaromyces flavus ATCC34594 through inclined-plane, shake-flask culture, obtain seed liquor.1L fermentor tank adds nutrient solution; Fermentor tank adds nutrient solution, 121 DEG C of autoclavings 30 minutes, be cooled to 26-27 DEG C, Tarlaromyces flavus seed liquor is seeded to fermentor tank, inoculative proportion is inoculative proportion is 9-10%, and ventilation ratio is 0.9-1V/(V minute), cultivate 41-45 hour for 26-27 DEG C, wet Tarlaromyces flavus cell is obtained, as biocatalytic reaction catalyzer with filtering centrifuge is centrifugal.
Biocatalytic Conversion: add phosphate buffered saline buffer in 0.5L bottom ventilation stirred reactor, pH is 5.4, add substrate 2,4 '-dichloroacetophenone, make its concentration be 80g/L, corn steep liquor (with dry basis) content is 20g/L, sorbitan monolaurate 13g/L, wood sugar 15g/L, maltose 15g/L, Virahol 5%V/V (volumetric concentration), 121 DEG C of autoclavings 30 minutes; When being cooled to 27 DEG C, add wet Tarlaromyces flavus cell and make its concentration be 71g/L, ventilation ratio is 0.15V/(V minute), carry out biocatalytic reaction, the reaction times is 70 hours; After reaction terminates, leach cell, be extracted with ethyl acetate reaction solution, steam ethyl acetate, obtain the chloro-phenyl of the chloro-1-(4-of product (S)-2-) ethanol, reaction conversion ratio 99%, product yield 97%, enantiomeric excess rate 98.5%.
embodiment 2
Seed culture medium composition is: corn steep liquor (with dry basis) content is 35-45g/L, yeast extract 10g/L, glucose 20g/L, ammonium sulfate 0.5-0.7g/L, magnesium sulfate 0.3-0.4g/L, phosphoric acid dioxy potassium 1.8-2.3g/L; The agar powder of 15g/L is added during preparation solid medium.
Nutrient solution composition is: corn steep liquor (with dry basis) content is 35-45g/L; analysis for soybean powder 3-4g/L; yeast extract 8-10g/L, glucose 18-22g/L, malt extract 20-25g; ammonium sulfate 0.5-0.7g/L; magnesium sulfate 0.3-0.4g/L, phosphoric acid dioxy potassium 1.8-2.3g/L, calcium carbonate 0.7g/L; ferrous sulfate 0.18g/L, manganous sulfate 0.025g/L; PH4.4.
Wet Tarlaromyces flavus cell preparation process is as follows: Tarlaromyces flavus ATCC34594 through inclined-plane, shake-flask culture, obtain seed liquor.5L fermentor tank adds nutrient solution; Fermentor tank adds nutrient solution, 121 DEG C of autoclavings 30 minutes, be cooled to 26-27 DEG C, Tarlaromyces flavus seed liquor is seeded to fermentor tank, inoculative proportion is 9-10%, and ventilation ratio is 0.9-1V/(V minute), cultivate 41-45 hour for 26-27 DEG C, wet Tarlaromyces flavus cell is obtained, as biocatalytic reaction catalyzer with filtering centrifuge is centrifugal.
Biocatalytic Conversion: add phosphate buffered saline buffer in 5L bottom ventilation stirred reactor, pH is 5.4, add substrate 2,4 '-dichloroacetophenone, make its concentration be 90g/L, corn steep liquor (with dry basis) content is 19g/L, sorbitan monolaurate 14g/L, wood sugar 17g/L, maltose 12g/L, Virahol 6%V/V (volumetric concentration), 121 DEG C of autoclavings 30 minutes; When being cooled to 27 DEG C, add wet Tarlaromyces flavus cell and make its concentration be 75g/L, ventilation ratio is 0.16V/(V minute), carry out biocatalytic reaction, the reaction times is 70 hours; After reaction terminates, leach cell, be extracted with ethyl acetate reaction solution, steam ethyl acetate, obtain the chloro-phenyl of the chloro-1-(4-of product (S)-2-) ethanol, reaction conversion ratio 98%, product yield 96%, enantiomeric excess rate 99%.
embodiment 3
Seed culture medium composition is: corn steep liquor (with dry basis) content is 35-45g/L, yeast extract 10g/L, glucose 20g/L, ammonium sulfate 0.5-0.7g/L, magnesium sulfate 0.3-0.4g/L, phosphoric acid dioxy potassium 1.8-2.3g/L; The agar powder of 15g/L is added during preparation solid medium.
Nutrient solution composition is: corn steep liquor (with dry basis) content is 35-45g/L; analysis for soybean powder 3-4g/L; yeast extract 8-10g/L, glucose 18-22g/L, malt extract 20-25g; ammonium sulfate 0.5-0.7g/L; magnesium sulfate 0.3-0.4g/L, phosphoric acid dioxy potassium 1.8-2.3g/L, calcium carbonate 0.7g/L; ferrous sulfate 0.18g/L, manganous sulfate 0.025g/L; PH4.4.
Wet Tarlaromyces flavus cell preparation process is as follows: Tarlaromyces flavus ATCC34594 through inclined-plane, shake-flask culture, obtain seed liquor.10L fermentor tank adds nutrient solution; Fermentor tank adds nutrient solution, 121 DEG C of autoclavings 30 minutes, be cooled to 26-27 DEG C, Tarlaromyces flavus seed liquor is seeded to fermentor tank, inoculative proportion is 9-10%, and ventilation ratio is 0.9-1V/(V minute), cultivate 41-45 hour for 26-27 DEG C, wet Tarlaromyces flavus cell is obtained, as biocatalytic reaction catalyzer with filtering centrifuge is centrifugal.
Biocatalytic Conversion: add phosphate buffered saline buffer in 10L bottom ventilation stirred reactor, pH is 5.4, add substrate 2,4 '-dichloroacetophenone, make its concentration be 84g/L, corn steep liquor (with dry basis) content is 20g/L, sorbitan monolaurate 13.5g/L, wood sugar 16g/L, maltose 13g/L, Virahol 5.5%V/V (volumetric concentration), 121 DEG C of autoclavings 30 minutes; When being cooled to 28 DEG C, add wet Tarlaromyces flavus cell and make its concentration be 73g/L, ventilation ratio is 0.15V/(V minute), carry out biocatalytic reaction, the reaction times is 68 hours; After reaction terminates, leach cell, be extracted with ethyl acetate reaction solution, steam ethyl acetate, obtain the chloro-phenyl of the chloro-1-(4-of product (S)-2-) ethanol, reaction conversion ratio 98.5%, product yield 96.5%, enantiomeric excess rate 99%.
embodiment 4
Seed culture medium composition is: corn steep liquor (with dry basis) content is 35-45g/L, yeast extract 10g/L, glucose 20g/L, ammonium sulfate 0.5-0.7g/L, magnesium sulfate 0.3-0.4g/L, phosphoric acid dioxy potassium 1.8-2.3g/L; The agar powder of 15g/L is added during preparation solid medium.
Nutrient solution composition is: corn steep liquor (with dry basis) content is 35-45g/L; analysis for soybean powder 3-4g/L; yeast extract 8-10g/L, glucose 18-22g/L, malt extract 20-25g; ammonium sulfate 0.5-0.7g/L; magnesium sulfate 0.3-0.4g/L, phosphoric acid dioxy potassium 1.8-2.3g/L, calcium carbonate 0.7g/L; ferrous sulfate 0.18g/L, manganous sulfate 0.025g/L; PH4.4.
Wet Tarlaromyces flavus cell preparation process is as follows: Tarlaromyces flavus ATCC34594 through inclined-plane, shake-flask culture, obtain seed liquor.10L fermentor tank adds nutrient solution; Fermentor tank adds nutrient solution, 121 DEG C of autoclavings 30 minutes, be cooled to 26-27 DEG C, Tarlaromyces flavus seed liquor is seeded to fermentor tank, inoculative proportion is 9-10%, and ventilation ratio is 0.9-1V/(V minute), cultivate 41-45 hour for 26-27 DEG C, wet Tarlaromyces flavus cell is obtained, as biocatalytic reaction catalyzer with filtering centrifuge is centrifugal.
Biocatalytic Conversion: add phosphate buffered saline buffer in 20L bottom ventilation stirred reactor, pH is 5.4, add substrate 2,4 '-dichloroacetophenone, make its concentration be 86g/L, corn steep liquor (with dry basis) content is 19g/L, sorbitan monolaurate 13.5g/L, wood sugar 156g/L, maltose 14g/L, Virahol 5.5%V/V (volumetric concentration), 121 DEG C of autoclavings 30 minutes; When being cooled to 2.5 DEG C, add wet Tarlaromyces flavus cell and make its concentration be 74g/L, ventilation ratio is 0.16V/(V minute), carry out biocatalytic reaction, the reaction times is 69 hours; After reaction terminates, leach cell, be extracted with ethyl acetate reaction solution, steam ethyl acetate, obtain the chloro-phenyl of the chloro-1-(4-of product (S)-2-) ethanol, reaction conversion ratio 99%, product yield 96.5%, enantiomeric excess rate 99%.
Claims (2)
1. the chloro-phenyl of the Tarlaromyces flavus cell biocatalysis preparation chloro-1-(4-of (S)-2-) method of ethanol, it is characterized in that adding phosphate buffered saline buffer in retort, pH is 5.4, adds substrate 2,4 '-dichloroacetophenone, make substrate 2,4 '-dichloroacetophenone addition is 80-90g/L, and corn steep liquor content is 19-20g/L, sorbitan monolaurate 13-14g/L, wood sugar 15-17g/L, maltose 12-15g/L, Virahol 5-6%V/V, 121 DEG C of autoclavings 30 minutes; When being cooled to 27-28 DEG C, add wet Tarlaromyces flavus cell and make its concentration be 71-75g/L, ventilation ratio is 0.15-0.16V/(V minute), carry out biocatalytic reaction, the reaction times is 67-70 hour; After reaction terminates, leach cell, be extracted with ethyl acetate reaction solution, steam ethyl acetate, obtain the chloro-phenyl of the chloro-1-(4-of product (S)-2-) ethanol, reaction conversion ratio 98-99%, product yield 96-97%, enantiomeric excess rate 98.5-99%.
2. method according to claim 1, is characterized in that wet Tarlaromyces flavus cell preparation process is as follows: Tarlaromyces flavus ATCC34594, and through inclined-plane, shaking flask, seed tank culture obtain seed liquor; Fermentor tank adds nutrient solution, 121 DEG C of autoclavings 30 minutes, be cooled to 26-27 DEG C, Tarlaromyces flavus seed liquor is seeded to fermentor tank, inoculative proportion is 9-10%, and ventilation ratio is 0.9-1V/(V minute), cultivate 41-45 hour for 26-27 DEG C, wet Tarlaromyces flavus cell is obtained, as biocatalytic reaction catalyzer with filtering centrifuge is centrifugal; In fermentor tank, nutrient solution composition is: corn steep liquor (with dry basis) content is 35-45g/L; analysis for soybean powder 3-4g/L; yeast extract 8-10g/L, glucose 18-22g/L, malt extract 20-25g; ammonium sulfate 0.5-0.7g/L; magnesium sulfate 0.3-0.4g/L, phosphoric acid dioxy potassium 1.8-2.3g/L, calcium carbonate 0.7g/L; ferrous sulfate 0.18g/L, manganous sulfate 0.025g/L; PH4.4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510561222.5A CN105132471A (en) | 2015-09-07 | 2015-09-07 | Method for producing photo-active chloro-benzene chloroethanol by virtue of microorganisms |
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| CN201510561222.5A CN105132471A (en) | 2015-09-07 | 2015-09-07 | Method for producing photo-active chloro-benzene chloroethanol by virtue of microorganisms |
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