CN116590161B - Recombinant amycolatopsis for producing vanillin, construction method and application thereof - Google Patents

Recombinant amycolatopsis for producing vanillin, construction method and application thereof Download PDF

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CN116590161B
CN116590161B CN202310519438.XA CN202310519438A CN116590161B CN 116590161 B CN116590161 B CN 116590161B CN 202310519438 A CN202310519438 A CN 202310519438A CN 116590161 B CN116590161 B CN 116590161B
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王晶
杨璐
郭建琦
牛永洁
孟永宏
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Shaanxi Healthful Biological Engineering Co ltd
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Abstract

The invention provides a recombinant amycolatopsis engineering strain for high-yield vanillin by taking eugenol as a substrate, wherein the recombinant amycolatopsis contains key genes capable of accumulating ferulic acid which is a precursor substance synthesized by vanillin, and proteins coded by the key genes are vanillyl alcohol oxidase and coniferyl alcohol dehydrogenase coniferyl aldehyde dehydrogenase. The recombinant amycolatopsis can ferment with eugenol as a substrate to produce vanillin, the concentration of vanillin in a seed liquid culture obtained after the recombinant amycolatopsis is fermented and cultured can reach 9.34g/L, the conversion rate reaches 84.68%, the concentration of vanillin can be 20.2g/L in a 5L fermentation tank, and the yield of vanillin is obviously higher than that of vanillin of other types.

Description

Recombinant amycolatopsis for producing vanillin, construction method and application thereof
Technical Field
The invention belongs to the technical field of genetic engineering. In particular to a recombinant amycolatopsis for producing vanillin, and also relates to a construction method and application of the strain.
Background
Vanillin (4-hydroxy-3-methoxybenzaldehyde) is one of the most important aromatic flavor compounds in the food and perfume manufacturing industries. As with many other low molecular weight phenolic compounds, vanillin has antioxidant and antibacterial properties and thus has potential as a food preservative. It is active against both gram-positive and gram-negative food spoilage bacteria and has been shown to be effective against both pure fruit bacteria and yeasts and molds in laboratory growth media. Vanillin is considered one of the most important tastes in the world. It is widely used in the food, beverage, perfume and pharmaceutical industries.
At present, the production modes of vanillin in the market mainly comprise plant extraction, chemical synthesis and microbial transformation. Because of the shortcomings of natural extraction and chemical synthesis, attention is paid to the production of vanillin by microbial transformation, wherein eugenol, isoeugenol and ferulic acid are the main substrates for the production of vanillin by the method. Eugenol is widely used as an inexpensive raw material for medicines, foods, fragrances, antioxidants, etc., and is expected to be a main component of an eco-friendly chemical synthesis substance. Tadasa for the first time reported that corynebacteria are capable of converting eugenol into vanillin, and the corynebacteria can obtain ferulic acid and vanillin by using eugenol as a unique carbon source and energy source. Ashengroph et al isolated a Pseudomonas resina (Pseudomonas resinovorans SPR 1) strain capable of converting eugenol to vanillin and related phenolic aromatic products. After 30h and 60h of bioconversion 0.24g/L vanillin (conversion 10%) and 1.1g/L vanillic acid (conversion 44%) were produced, respectively, before further optimizing the conditions. Researchers also establish a two-step bioconversion process from eugenol to vanillin, in which, in the first step, recombinant E.coli XL1-Blue (pSKvaomPcalAmcalB) is used to convert eugenol into ferulic acid with a maximum concentration of up to 14.7g/L; in the second step, ferulic acid was converted to vanillin with E.coli (pSKechE/Hfcs) at a yield of 0.3g/L.
According to the method, the yield of vanillin is low, and according to the current clear synthetic route of vanillin, amycolatopsis capable of metabolizing toxic substances and low in vanillin degradation rate is used as a research platform, and different sources of genes are excavated for synthesizing key proteins of vanillin, so that amycolatopsis capable of producing vanillin can be provided through genetic modification.
Disclosure of Invention
The invention aims to provide a recombinant amycolatopsis engineering strain for producing vanillin by taking eugenol as a substrate through genetic modification, and also provides a construction method and application of the engineering strain.
In order to achieve the above object, the present invention provides a recombinant amycolatopsis engineering strain for producing vanillin by using eugenol as a substrate, wherein the recombinant amycolatopsis contains a recombinant plasmid, the recombinant plasmid contains a key gene capable of accumulating ferulic acid (Ferulic acid) which is a precursor substance for synthesizing vanillin, and the protein encoded by the key gene is vanillyl alcohol oxidase and coniferyl aldehyde dehydrogenase.
In the present invention, preferably, the vanillyl alcohol oxidase is derived from azalea, alternaria arborescens, fusarium verticillatum, alsophila spinulosa or cocoa beans; the coniferyl alcohol dehydrogenase is selected from the group consisting of Lenocardia, alfalfa, du Genshi, carnation and mesorhizobium; the coniferyl aldehyde dehydrogenase is derived from Arabidopsis thaliana, vibrio cyclophilus, rice, brazilian bacillus or seaweed.
As a particularly preferred embodiment, the vanillyl alcohol oxidase is derived from Fusarium verticillium, and the nucleotide sequence of the vanillyl alcohol oxidase is shown as SEQ ID NO. 1; the coniferyl alcohol dehydrogenase is from alfalfa, and the nucleotide sequence of the coniferyl alcohol dehydrogenase is shown as SEQ ID NO. 2; the coniferyl aldehyde dehydrogenase is derived from seaweed, and the nucleotide sequence of the coniferyl aldehyde dehydrogenase is shown as SEQ ID NO. 3.
Based on the above, the invention also provides a construction method of the recombinant amycolatopsis, which comprises the following steps:
(1) Construction of recombinant engineering strains containing Vanilla alcohol oxidase Gene
Obtaining and synthesizing vanillyl alcohol oxidase (vaoA) gene sequences from azalea (DrvaoA), alternaria arborescens (AavaoA), fusarium verticillatum (FvvaoA), alsophila spinulosa (XcvaoA) and cacao bean (LtvaoA), respectively taking BamHI/NsiI as enzyme cutting site double enzyme cutting carrier pKC1139 and connecting to obtain recombinant plasmids pKC1139-DrvaoA, pKC 1139-AovaoA, pKC1139-FvvaoA, pKC1139-XcvaoA and pKC1139-LtvaoA, transforming the above plasmids into Amycolatopsis (Amycolatopsis sp.) by a method of conjugation transfer, and verifying the correctness of the recombinant engineering strains selected by an arabidopsis resistance screen by a PCR method;
construction of recombinant engineering Strain containing Vanilla alcohol oxidase and coniferyl alcohol dehydrogenase genes
Obtaining and synthesizing coniferyl alcohol dehydrogenase (calA) gene sequences from nocardia (NgcalA), alfalfa (MscalA), du Genshi bacteria (DvcalA), caryophyllus (TccalA) and mesorhizobium (MlcalA), respectively taking XbaI/SpeI as a double-enzyme-cutting carrier pKC1139-FvvaoA of enzyme cutting sites and connecting to obtain recombinant plasmids pKC1139-FvvaoANgcalA, pKC1139-FvvaoAMscalA, pKC1139-FvvaoADvcalA, pKC1139-FvvaoATccalA and pKC1139-FvvaoAMlcalA, transforming the plasmids into Amycolatopsis (Amycolatopsis sp.) by a joint transfer method, and verifying the correctness of the recombinant engineering strains selected by an arabiamycin resistance screen by a PCR mode;
(3) Construction of recombinant engineering strains containing Vanilla alcohol oxidase, coniferyl alcohol dehydrogenase and coniferyl aldehyde dehydrogenase genes
Obtaining and synthesizing coniferyl aldehyde dehydrogenase (calB) gene sequences from arabidopsis thaliana (AtcalB), vibrio cyclophilis (VccalB), rice (ObcalB), brazilian bacillus (PbcalB) or seaweed (MncalB), respectively taking XbaI/SpeI as enzyme cutting site double enzyme cutting vectors pKC1139-FvvaoAMscalA and connecting to obtain recombinant plasmids pKC1139-FvvaoAMscalAAtcalB、pKC1139-FvvaoAMscalAVccalB、pKC1139-FvvaoAMscalAObcalB、pKC1139-FvvaoAMscalAPbcalB、pKC1139-FvvaoAMscalAMncalB,, transforming the plasmids into Amycolatopsis (Amycolatopsis sp.) by a method of conjugation transfer, and verifying the correctness of the recombinant engineering strains by a PCR method through a recombinant engineering strain selected by using the resistance of arabidopsis.
The invention provides and verifies the application of the gene recombinant amycolatopsis in the production of vanillin by taking eugenol as a substrate.
In the present invention, when recombinant Amycolatopsis is constructed, the starting strain when the recombinant plasmid is transformed into Amycolatopsis (Amycolatopsis sp.) is Amycolatopsis (Amycolatopsis sp.) HM-141, which has been deposited in the China general microbiological culture Collection center, china center for culture Collection, having the accession number CGMCC No. 22871, at the X.3835, west 3, national academy of sciences of microorganisms in the Korean area North Star, beijing at the month 9 of 2021. The amycolatopsis HM-141 is also described in the Chinese patent application CN 2021109397312.
Amycolatopsis sp.HM-141 can produce vanillin by using ferulic acid as a substrate, the molar conversion rate is as high as 87%, the impurity content in the product is low, the detection amount of vanillin is 0, and the detection amount of vanillic acid is 0.25g/L.
The invention verifies that recombinant plasmids containing vanillin synthesis genes vanillyl alcohol oxidase, coniferyl alcohol dehydrogenase and coniferyl aldehyde dehydrogenase with different sources are respectively constructed, the recombinant plasmids are transformed into different amycolatopsis by a joint transfer mode, and recombinant bacteria for improving the vanillin yield are screened out through the resistance of arabidopsis. The recombinant amycolatopsis contains vanillyl alcohol oxidase (vaoA) derived from fusarium verticillatum (FvvaoA), coniferyl alcohol dehydrogenase (calA) derived from alfalfa (MscalA) and coniferyl aldehyde dehydrogenase (calB) derived from seaweed (MncalB), and can ferment with eugenol as a substrate to produce vanillin, the concentration of vanillin in a seed liquid culture obtained after fermentation culture of the recombinant amycolatopsis can reach 9.34g/L, the conversion rate can reach 84.68%, and the concentration of vanillin can be 20.2g/L after fermentation in a 5L fermentation tank, which is remarkably higher than the yields of vanillin of other types.
Drawings
FIG. 1 is a vanillin biosynthetic pathway;
FIG. 2 is a comparison of coniferyl alcohol yield and mass conversion rate for each strain of example 1;
FIG. 3 is a comparison of coniferyl aldehyde yield and mass conversion rate for each strain of example 2;
FIG. 4 is a comparison of vanillin yield and mass conversion of each strain of example 3;
FIG. 5 shows the concentration trend of eugenol and vanillin in the 5L fermentor of the optimal strain of example 4.
Detailed Description
The following examples serve to illustrate the technical solution of the invention without limiting it.
In the invention, unless otherwise specified, "%" for explaining the concentration is mass percent ": "all are mass ratios.
The invention relates to the following media:
The formula of the LB culture medium is as follows: 10g/L peptone, 5g/L yeast extract and 10g/L sodium chloride.
The formula of the GYM medium is as follows: glucose 4g/L, yeast extract 4g/L, malt extract 10g/L.
The formula of the GYM solid culture medium is as follows: glucose 4g/L, yeast extract 4g/L, malt extract 10g/L, calcium carbonate 2g/L, and agar powder 20g/L.
The formula of the M1 culture medium is as follows: 25g/L of glucose, 10g/L of yeast extract powder, 0.8g/L of sodium chloride, 5g/L of monopotassium phosphate, 0.2g/L of magnesium sulfate heptahydrate, 0.05g/L of calcium chloride and the balance of water, and regulating the pH to 7.2.
The bond transfer experiments used in the following examples included the following steps:
(1) Amycolatopsis sp (or other engineered strain) was activated on GYM solid medium, cultured at 30℃for 3-4d to develop colonies, and then inoculated into 50mL of GYM liquid medium, cultured at 30℃for 2d at 200 rpm.
(2) The constructed plasmid was heat-shocked into E.coli ET12567 (pUZ 8002) strain, spread on LB solid plate containing 25. Mu.g/mL chloramphenicol, 25. Mu.g/mL kanamycin and 50. Mu.g/mL arabinomycin resistance, cultured at 37℃for 12 hours until single colony developed, inoculated single colony was cultured overnight at 37℃in 4mL LB liquid medium containing resistance at 200rpm, and then inoculated in 20mL LB at 37℃at 200rpm for 4-5 hours to OD600 of 0.4-0.6 according to 1% inoculum size.
(3) 2ML of Amycolatopsis sp.bacteria solution and 1mL of E.coli ET12567 (pUZ 8002) bacteria solution carrying target plasmid are respectively taken, 1mL and 5000g of the bacteria solution are centrifuged for 1min, the bacteria solution is washed twice by antibiotic-free LB, 100 mu L of antibiotic-free LB culture medium is added, the Amycolatopsis and the E.coli ET12567 (pUZ 8002) are mixed according to the volume ratio of 7:1, and 30 mu L of the mixed bacteria solution is taken and placed on the antibiotic-free GYM solid culture medium for 30 ℃ for 14h for forward culture.
(4) The resulting plaque was scraped off, spread on a GYM solid medium containing 50. Mu.g/mL of arabinomycin and 25. Mu.g/mL of nalidixic acid solution, cultured at 30℃for 4d until single colonies were grown, and then PCR verification was performed on the single colonies.
The method for analyzing coniferyl alcohol content in the strain by HPLC used in the following examples includes:
(1) Preparation of coniferyl alcohol standard curve: 10mg of coniferyl alcohol is accurately weighed by a ten-thousandth balance, dissolved and diluted to 1g/L mother liquor by 10mL of pure methanol, and then diluted to 120 mug/mL, 100 mug/mL, 80 mug/mL, 60 mug/mL, 40 mug/mL and 20 mug/mL coniferyl alcohol solution by sterilized water in a gradient manner. All samples were filtered through a 0.22 μm aqueous pinhole filter head prior to HPLC injection.
(2) Preparation of the test sample: 1mL of the fermentation broth was centrifuged at 12000rpm for 5min in a 1.5mL centrifuge tube, 10. Mu.L of the supernatant was taken and added with 990. Mu.L of sterilized water to dilute to 100 times, and the mixture was filtered by a 0.22 μm aqueous pinhole filter.
(3) HPLC detection conditions: mobile phase: 0.5% phosphoric acid aqueous solution (A), capronitrile (B); volume ratio: 90% A/10% B; flow rate: 1mL/min; detection wavelength: 280nm; column temperature: 30 ℃; chromatographic column: diamonsil SB-C18 column, 4.6 mm X250 mm.
The present invention relates to the following genes:
TABLE 1 Vanillin oxidase genes and sources thereof
TABLE 2 coniferyl alcohol dehydrogenase genes and sources thereof
TABLE 3 coniferyl aldehyde dehydrogenase genes and sources thereof
The invention relates to the following primers:
The colony PCR verification reaction system related to the invention is as follows:
The PCR procedure was as follows:
EXAMPLE 1 construction of recombinant engineering bacteria containing Vanilla alcohol oxidase Gene (vaoA)
Vanilla oxidase (vaoA) gene sequences derived from azalea (DrvaoA), alternaria arborescens (AavaoA), fusarium verticillatum (FvvaoA), cyathea (XcvaoA, MU375925.1 308097-310471 (-)) and cocoa beans (Ltvaoa, KZ107832.1 1234575-1236406 (+)) were obtained from NCBI and sent to the synthesis. The recombinant plasmids pKC1139-DrvaoA, pKC 1139-AovaoA, pKC1139-FvvaoA, pKC1139-XcvaoA and pKC1139-LtvaoA are obtained by respectively using BamHI/NsiI as enzyme cutting site double enzyme cutting carrier and gene vaoA. The above recombinant plasmids were transformed into Amycolatopsis (Amycolatopsis sp.) by conjugation transfer, and the recombinant engineering strains screened for resistance to arabidopsis were obtained as recombinant strains 1,2, 3, 4, and 5, and were confirmed to be correct by colony PCR.
Detecting the content of coniferyl alcohol in the fermentation liquor to screen the recombinant strain with highest coniferyl alcohol yield.
The fermentation conditions were as follows:
mu.L of the strain was activated on GYM plate solid (plus Arabidopsis thaliana resistance) at a constant temperature of 30℃for 60 hours, then the cells were scraped off and diluted with 200. Mu.L of sterilized water, and 5% inoculated in 50ml of M1 seed solution (plus Arabian resistance) and subjected to shaking fermentation at a constant temperature of 30℃for 72 hours at 200 rpm. After adjusting the pH of the seed solution to 8.0 with NaOH aqueous solution, adding 1% eugenol (addition concentration: 10.57 g/L) for fermentation for 48 hours, centrifuging 1ml fermentation liquor, sucking the supernatant to dilute to 100 times, and filtering for HPLC analysis.
As shown in FIG. 2, the coniferyl alcohol concentration of each recombinant strain is compared, and the highest coniferyl alcohol concentration of the recombinant strain 3 is found, and the molar conversion rate reaches 88.78 percent, which is 9.88 g/L.
EXAMPLE 2 construction of recombinant engineering bacteria containing vanillyl alcohol oxidase Gene (vaoA) and coniferyl alcohol dehydrogenase Gene (calA)
The coniferyl alcohol dehydrogenase (calA) gene sequences derived from nocardia (NgcalA), alfalfa (MscalA), du Genshi (DvcalA), caryophyllus (TccalA) and mesorhizobium (MlcalA) were obtained from NCBI and synthesized by the biochemical process. The recombinant plasmids pKC1139-FvvaoANgcalA, pKC1139-FvvaoAMscalA, pKC1139-FvvaoADvcalA, pKC1139-FvvaoATccalA and pKC1139-FvvaoAMlcalA are obtained by double-enzyme cutting of the vector pKC1139-FvvaoA with the highest yield of coniferyl alcohol with XbaI/SpeI as enzyme cutting sites and connecting the vector pKC1139-FvvaoA with the gene calA. The above recombinant plasmids were transformed into Amycolatopsis (Amycolatopsis sp.) by conjugation transfer, and the recombinant engineering strains screened for resistance to arabidopsis were obtained as recombinant strains 6, 7, 8, 9, and 10, and were confirmed to be correct by colony PCR.
Detecting the content of coniferyl aldehyde in the fermentation liquor to screen the recombinant strain with highest coniferyl aldehyde yield.
The fermentation conditions were as follows:
mu.L of the strain was activated on GYM plate solid (plus Arabidopsis thaliana resistance) at a constant temperature of 30℃for 60 hours, then the cells were hung and diluted with 200. Mu.L of sterilized water, and 5% inoculated in 50ml of M1 seed solution (plus Arabian resistance) and subjected to shaking fermentation at a constant temperature of 30℃for 72 hours at 200 rpm. After adjusting the pH of the seed solution to 8.0 with NaOH aqueous solution, adding 1% eugenol (addition concentration: 10.57%) for further fermentation for 48 hours, centrifuging 1ml of fermentation liquor, sucking the supernatant to dilute to 100 times, and filtering for HPLC analysis.
As shown in FIG. 3, the concentration of coniferyl aldehyde of each recombinant strain is compared, and the highest coniferyl aldehyde concentration of the recombinant strain 7 is found to reach 9.53g/L, and the molar conversion rate reaches 86.12%.
EXAMPLE 3 construction of recombinant engineering Strain containing coniferyl aldehyde dehydrogenase (calB) Gene
Coniferyl aldehyde dehydrogenase (calB) derived from Arabidopsis thaliana (AtcalB), vibrio cyclophilia (VccalB), rice (ObcalB, NC_023163.2 17132108-17139602 (+)), brazilian bacillus (PbcalB) and seaweed (MncalB) was obtained from NCBI and sent to the biochemical process. The recombinant plasmid pKC1139-FvvaoAMscalAAtcalB、pKC1139-FvvaoAMscalAVccalB、pKC1139-FvvaoAMscalAObcalB、pKC1139-FvvaoAMscalAPbcalB、pKC1139-FvvaoAMscalAMncalB. obtained by double enzyme digestion of the vector pKC1139-FvvaoAMscalA with the highest yield of coniferyl alcohol with XbaI/SpeI as enzyme digestion sites is connected with the gene calB, the recombinant plasmid is transformed into Amycolatopsis (Amycolatopsis sp.) by a conjugation transfer method, and the recombinant engineering strain screened by the resistance of the arabidopsis is obtained, so that the following recombinant bacteria 11, 12, 13, 14 and 15 are verified to be correct by adopting a colony PCR mode.
Detecting the content of vanillin in the fermentation broth to screen recombinant strains with highest vanillin yield.
The fermentation conditions were as follows:
mu.L of the strain was activated on GYM plate solid (plus Arabidopsis thaliana resistance) at a constant temperature of 30℃for 60 hours, then the cells were hung and diluted with 200. Mu.L of sterilized water, and 5% inoculated in 50ml of M1 seed solution (plus Arabian resistance) and subjected to shaking fermentation at a constant temperature of 30℃for 72 hours at 200 rpm. After adjusting the pH of the seed solution to 8.0 with NaOH aqueous solution, adding 1% eugenol (adding concentration: 10.57 g/L) for fermentation for 48 hours, centrifuging 1ml fermentation liquor, sucking the supernatant to dilute to 100 times, and filtering for HPLC analysis.
As shown in FIG. 4, the concentration of vanillin in each recombinant strain was compared, and it was found that the concentration of vanillin in recombinant strain 15 was the highest, reaching 9.34g/L, and the molar conversion rate reached 84.68%.
EXAMPLE 4 fermentation in a 5L fermentor of the strain producing the highest concentration of vanillin
Inoculating 200 μl of recombinant strain 15 into 50mL of seed culture medium M1, and culturing at 30deg.C and 200rpm for 48 hr; the seed solution was inoculated into a 5L fermenter containing 4L of fermentation medium M1, which had been adjusted to pH 8.0 and to which had been added arabinomycin resistance, at 30℃and a stirring speed of 800rpm and a aeration ratio of 1vvm, and after fermentation for 24 hours, 21.34g/L (total 80ml, eugenol concentration calculated as 4L broth volume) of the substrate eugenol was added, and fermentation was continued for 72 hours. The concentration of vanillin in the fermentation broth was determined by HPLC method to be 20.2g/L. The results are shown in FIG. 5.
The results show that the recombinant engineering bacteria obtained by comparing and selecting recombinant plasmids of vanillyl alcohol oxidase, coniferyl alcohol dehydrogenase and coniferyl aldehyde dehydrogenase with different sources finally confirm that the recombinant engineering bacteria containing the vanillyl alcohol oxidase (vaoA) from fusarium verticillatum (FvvaoA), the coniferyl alcohol dehydrogenase (calA) from alfalfa (MscalA) and the coniferyl aldehyde dehydrogenase (calB) from seaweed (MncalB) can ferment with eugenol as a substrate to produce vanillin, the concentration of vanillin in a culture obtained after fermentation culture of the recombinant bacteria can reach 9.34g/L, the conversion rate reaches 84.68%, and the concentration of vanillin can be realized in a 5L fermentation tank by fermentation to be 20.2g/L, which is obviously higher than that of vanillin of the same type.

Claims (7)

1. Recombinant amycolatopsis for producing vanillin by taking eugenol as a substrate is characterized in that the recombinant amycolatopsis expresses vanillyl alcohol oxidase gene FvvaoA from fusarium verticillatum, coniferyl alcohol dehydrogenase gene MscalA from alfalfa and coniferyl aldehyde dehydrogenase gene MncalB from seaweed; the Amycolatopsis is Amycolatopsis (Amycolatopsis sp.) HM-141, and the strain is preserved in China general microbiological culture Collection center (CGMCC) of China national institute of sciences of microbiology, china No. 3, which is the national academy of sciences of China, at North Star, in the Korean area of Beijing, 7, 9, and has a preservation number of CGMCC No.22871.
2. The recombinant amycolatopsis according to claim 1, characterized in that the nucleotide sequence of vanillyl alcohol oxidase is shown in SEQ ID No. 1; the nucleotide sequence of the coniferyl alcohol dehydrogenase is shown as SEQ ID NO. 2; the nucleotide sequence of the coniferyl aldehyde dehydrogenase is shown as SEQ ID NO. 3.
3. The use of the recombinant amycolatopsis of claim 1 or 2 for producing vanillin using eugenol as a substrate.
4. The use according to claim 3, characterized in that the recombinant amycolatopsis produces vanillin by fermentation in seed medium M1 with eugenol as substrate.
5. The use according to claim 4, characterized in that the recombinant amycolatopsis is inoculated in 50mL of seed culture M1 and cultivated at 30 ℃ at 200rpm for 72h;
adjusting the pH of the M1 seed solution to 8.0, adding a substrate eugenol of 10.67g/L, continuing fermenting for 48 hours, and measuring the concentration of vanillin in the fermentation liquor by HPLC after the fermentation is finished;
Wherein, the formula of the M1 culture medium is as follows: 25g/L of glucose, 10g/L of yeast extract powder, 0.8g/L of sodium chloride, 5g/L of monopotassium phosphate, 0.2g/L of magnesium sulfate heptahydrate, 0.05g/L of calcium chloride and the balance of water, and regulating the pH to 7.2.
6. The method for constructing recombinant amycolatopsis according to claim 1, which comprises the following steps:
(1) Construction of recombinant engineering strains containing Vanilla alcohol oxidase Gene
Obtaining and synthesizing a vanillyl alcohol oxidase (FvvaoA) gene sequence from fusarium verticillatum, respectively taking BamHI/NsiI as a double-enzyme-cutting carrier pKC1139 of enzyme cutting sites and connecting to obtain recombinant plasmids pKC1139-FvvaoA, transforming the plasmids into Amycolatopsis (Amycolatopsis sp.) by a method of conjugation transfer, and screening recombinant engineering strains by using resistance of arabidopsis, wherein the obtained strains are verified to be correct by a PCR mode;
(2) Construction of recombinant engineering Strain containing Vanilla alcohol oxidase and coniferyl alcohol dehydrogenase genes
Obtaining and synthesizing a coniferyl alcohol dehydrogenase (MscalA) gene sequence derived from alfalfa; respectively taking XbaI/SpeI as a double-restriction enzyme digestion vector pKC1139-FvvaoA of restriction enzyme digestion sites and connecting to obtain recombinant plasmids pKC1139-FvvaoAMscalA, transforming the plasmids into Amycolatopsis (Amycolatopsis sp.) by a conjugation transfer method, and screening recombinant engineering strains by using the resistance of arabidopsis, wherein the obtained strains are verified to be correct by a PCR mode;
(3) Construction of recombinant engineering strains containing Vanilla alcohol oxidase, coniferyl alcohol dehydrogenase and coniferyl aldehyde dehydrogenase genes
Obtaining and synthesizing coniferyl aldehyde dehydrogenase (MncalB) gene sequences from seaweed, respectively taking XbaI/SpeI as enzyme cutting site double enzyme cutting vectors pKC1139-FvvaoAMscalA and connecting to obtain recombinant plasmids pKC1139-FvvaoAMscalAMncalB, transforming the plasmids into Amycolatopsis (Amycolatopsis sp.) by a conjugation transfer method, and screening recombinant engineering strains by using the resistance of arabidopsis, wherein the obtained strains are verified to be correct by a PCR mode.
7. The construction method according to claim 6, wherein the arabinoxylan resistance screening is carried out by coating recombinant amycolatopsis in GYM solid culture medium containing 50 μg/mL arabinomycin and 25 μg/mL nalidixic acid solution, culturing at 30deg.C for 4d until single colony grows, and the single colony is positive mutant;
The formula of the GYM solid culture medium is as follows: glucose 4g/L, yeast extract 4g/L, malt extract 10g/L, calcium carbonate 2g/L, and agar powder 20g/L.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103820375A (en) * 2013-12-13 2014-05-28 安徽师范大学 Engineering strain for biologically producing ferulic acid and establishing method of engineering strain
CN104928224A (en) * 2015-05-08 2015-09-23 安徽师范大学 Ferulic acid producing engineering strain, construction method and biotransformation method
CN113755422A (en) * 2021-10-09 2021-12-07 陕西海斯夫生物工程有限公司 Recombinant amycolatopsis capable of producing vanillin at high yield, and construction method and application thereof
CN114703113A (en) * 2022-03-29 2022-07-05 陕西海斯夫生物工程有限公司 Recombinant amycolatopsis, construction method and application thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102321563B (en) * 2011-10-24 2013-04-03 江南大学 Amycolatopsis sp. and method for preparing vanillin through whole-cell transformation of Amycolatopsis sp.
JP6596009B2 (en) * 2013-11-04 2019-10-23 ビージーエヌ テック エルエルシー Process for producing vanillin via microbial fermentation of ferulic acid from eugenol using plant dehydrogenase

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103820375A (en) * 2013-12-13 2014-05-28 安徽师范大学 Engineering strain for biologically producing ferulic acid and establishing method of engineering strain
CN104928224A (en) * 2015-05-08 2015-09-23 安徽师范大学 Ferulic acid producing engineering strain, construction method and biotransformation method
CN113755422A (en) * 2021-10-09 2021-12-07 陕西海斯夫生物工程有限公司 Recombinant amycolatopsis capable of producing vanillin at high yield, and construction method and application thereof
CN114703113A (en) * 2022-03-29 2022-07-05 陕西海斯夫生物工程有限公司 Recombinant amycolatopsis, construction method and application thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Highly Efficient Biotransformation of Eugenol to Ferulic Acid and Further Conversion to Vanillin in Recombinant Strains of Escherichia coli;Jorg Overhage et al.;《APPLIED AND ENVIRONMENTAL MICROBIOLOGY》;第69卷(第11期);6569-6576 *
香兰素生物合成的研究进展;党玥等;《微生物学通报》;第47卷(第11期);3678-3688 *

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