50 results about "Inosinic acid" patented technology

The invention provides a compound feed for promoting beef cattle growth and improving meat quality and a production method thereof, and belongs to the technical field of feed preparation. The compound feed comprises the following components in parts by weight: 100 parts of basal feed, 7-10 parts of a functional additive and 0.3-0.5 part of disodium inosinate, and the functional additive comprises a postbiotic compound, a fatty acid regulating agent, a bacterium enzyme synergist and trace elements, wherein the metagen complex comprises a lactobacillus plantarum metagen extract and a bacillus coagulans metagen extract, the fatty acid regulating agent comprises conjugated linoleic acid glyceride and medium-chain fatty acid, and the bacterial enzyme synergist comprises beta-mannase and bacillus subtilis. According to the compound feed, the growth performance and the meat quality can be synchronously improved, and a reliable processing technical guarantee is provided for improving the growth performance and the meat quality of beef cattle.

The present invention relates to a novel PTS transporter subunit EIIC variant and a method of producing 5′-inosinic acid using the same. The PTS transporter subunit EIIC variant is obtained by substituting one or more amino acids in the amino acid sequence constituting PTS transporter subunit EIIC to change the activity of the protein, and a recombinant microorganism comprising the PTS transporter subunit EIIC variant is capable of efficiently producing 5′-inosinic acid.

The present invention relates to an Escherichia coli that efficiently produces 5'-inosinic acid and its application, belonging to the field of bioengineering technology. In order to reduce the degradation of 5'-inosinic acid in Escherichia coli, four phosphatase encoding genes were knocked out using the CRISPR / Cas9 system, and it was found that knocking out the UMP phosphatase encoding gene nagD and the 5'-nucleotidase encoding gene ushA respectively can increase the production of 5'-inosinic acid. Subsequently, in order to inhibit the further conversion of 5'-inosinic acid into guanylate and adenylate, the 5'-inosinic acid dehydrogenase encoding gene guaB was knocked out alone. Finally, in order to enhance the supply and utilization of formyltetrahydrofolate required in the purine synthesis process, the promoter of the serine hydroxymethyltransferase encoding gene glyA was replaced with P tac The recombinant Escherichia coli produced 2113.12 mg / L of 5'-inosinic acid in 48 hours of fermentation, and no antibiotics were required during the fermentation process, indicating that the product has broad application prospects.

The invention discloses oyster powder and a preparation method thereof, and belongs to the technical field of seasonings. The preparation method comprises the following steps: selecting fresh and live oysters, cleaning shells, opening the shells, taking meat, washing, mixing the oyster meat with purified water, slowly cooking at low temperature, then boiling at high temperature, and filtering to obtain oyster juice; mixing the oyster juice with maltodextrin, edible salt, white sugar, monosodium glutamate, disodium 5 '-inosinate and disodium 5'-guanylate, and sequentially performing high-temperature sterilization, compound enzyme enzymolysis and enzyme deactivation; and conveying the powdery precursor raw material to a spray drying tower for drying (with a spiral cyclone guide plate and three-stage temperature control), and performing three-stage discharging after drying to obtain the oyster powder. The method solves the problems of insufficient delicate flavor, poor solubility and high hygroscopicity of the existing oyster powder, and the prepared oyster powder is strong in delicate flavor, good in fluidity and stable in quality, and meets the use and storage requirements of seasonings.

The present invention relates to a novel PTS transporter subunit EIIC variant and a method of producing 5′-inosinic acid using the same. The PTS transporter subunit EIIC variant is obtained by substituting one or more amino acids in the amino acid sequence constituting PTS transporter subunit EIIC to change the activity of the protein, and a recombinant microorganism comprising the PTS transporter subunit EIIC variant is capable of efficiently producing 5′-inosinic acid.

The invention discloses bionic shark fin flavor essence, a probiotic microcapsule, a preparation process of the bionic shark fin flavor essence and the probiotic microcapsule and an instant seasoning. The bionic shark fin flavor essence is prepared from the following components in percentage by weight: 0.5%-1.5% of L-alanine, 0.3%-1.0% of glycine, 0.05%-0.4% of disodium 5 '-inosinate, 0.05%-0.4% of disodium 5'-guanylate and 0.1%-0.8% of sodium succinate. 1%-5% of yeast extract, 2%-8% of mushroom mycelium fermentation liquor, 0.05%-0.3% of ginger oleoresin and 0.03%-0.25% of garlic oleoresin; 20%-55% of propylene glycol and 5%-15% of sorbitol; 0.2%-3% of probiotic microcapsules subjected to embedding treatment; and the balance of deionized water. According to the bionic shark fin flavor essence provided by the invention, through an elaborately designed plant base and fermentation source formula, the dependence of the traditional shark fin flavor on seafood extracts is completely avoided, the seafood allergen risk is completely eradicated, and the consumption requirements of special crowds are met.

The present invention relates to a novel 5-dehydro-2-deoxygluconate kinase variant and a method for producing 5 '-inosinic acid using the same. According to the present invention, the 5-dehydro-2-deoxygluconate kinase variant has a modified protein activity due to the substitution of one or more amino acids in the amino acid sequence constituting a 5-dehydro-2-deoxygluconate kinase, and thus a recombinant microorganism comprising the 5-dehydro-2-deoxygluconate kinase variant can efficiently produce 5 '-inosinic acid.

A set of serum metabolic biomarkers and detection kit for detecting drug-resistant tuberculosis are provided. The set of the serum metabolic biomarkers includes 17 serum metabolic biomarkers. The 17 serum metabolic biomarkers are verified to be associated with tuberculosis based on the level changes of these biomarkers. The 17 metabolites includes taurine, homocysteine, uric acid, ascorbic acid, suberylglycine, uridine, dopamine 4-sulfate, inosinic acid, glyceraldehyde phosphate, [3-methoxy-4-(phosphoryl)phenyl]carbonyl sulfonic acid, nuclomedone, n4-cyclopropyl-6-(2,3-dichlorophenyl)-1,2,3,4-tetrahydropyrimidine-2,4-diimine, 1-[2-chlorine-2-(2,4-dichlorophenyl)ethenyl]-1,2,4-triazole, tetrachloro-phthalic anhydride, malotilate, fulvic acid, and L-neopterin. The serum metabolic biomarkers and detection kit for detecting drug-resistant tuberculosis can assist doctors in accurately diagnosing the disease, which is of great significance for the diagnosis and mass screening for drug-resistant tuberculosis.

The invention provides a construction method and application of bacillus amyloliquefaciens capable of enhancing yhcA expression, and the construction method comprises the following steps: taking bacillus amyloliquefaciens XH7 genome DNA as a template, carrying out PCR amplification on a transport protein coding gene yhcA, and connecting a promoter and a terminator to obtain a target gene segment; respectively carrying out double enzyme digestion on a free plasmid vector and a target gene segment by adopting the restriction enzyme to obtain a linear plasmid segment and an enzyme digestion gene segment; connecting the enzyme-digested gene fragment and the linear plasmid fragment through DNA ligase to obtain a free expression vector; and finally, transferring the free expression vector into a competent cell of bacillus amyloliquefaciens XH7, and adding a resistance selection marker to obtain a positive transformant. The research proves that the enhanced expression of the transporter gene yhcA is also a very effective method for improving the inosinic acid yield of bacillus amyloliquefaciens.

The invention discloses a compound flavor enhancer for improving meat quality of turbots and application of the compound flavor enhancer. The compound flavor enhancer comprises glutamic acid, aspartic acid, succinic acid, inosinic acid and guanylic acid. The compound flavor enhancer is applied to cultivation of turbots, namely, the compound flavor enhancer is used as an additive component of feed, and traditional chilled fish cultivation is replaced by compound feed cultivation added with the compound flavor enhancer. The formula of the feed is scientific in design, nutritional requirements of the turbots can be accurately met, the breeding cost is effectively reduced, and the addition of the compound flavor enhancer can significantly improve the adverse effect on the meat quality of the turbots caused by replacing chilled fresh fish with the compound feed on the premise of not influencing the growth performance; therefore, the meat quality and flavor of the scophthalmus maximus cultured by the compound feed are close to or even reach the level of iced fresh fish culture.

The present disclosure relates to the technical field of medicine, and in particular to a pharmaceutical composition, preparation method and use thereof. The pharmaceutical composition includes a first active ingredient, a second active ingredient, and a pharmaceutically acceptable carrier or excipient. The first active ingredient is a microbial agent, including one or more of Staphylococcus aureus, Bordetella pertussis, diphtheria toxoid, tetanus toxoid, Salmonella typhi, and Salmonella paratyphi. The second active ingredient includes polyinosinic acid, polycytidylic acid, and vitamin. The pharmaceutical composition of the present disclosure pertains to an artificial active immunotherapy for tumors. It can “stimulate” the entire immune system, making the therapy of using bacteria to activate the human immune system to kill cancer cells highly stable and reliable. This composition can significantly save and prolong the lives of cancer patients while exhibiting extremely high safety, minimal toxic side effects, and low production costs.

The present invention relates to a novel PTS transporter subunit EIIC variant and a method for producing 5 '-inosinic acid using the same. The PTS transporter subunit EIIC variant has an altered protein activity by replacing at least one amino acid in the amino acid sequence constituting the PTS transporter subunit EIIC, and thus a recombinant microorganism comprising the PTS transporter subunit EIIC variant can efficiently produce 5 '-inosinic acid.

The present invention relates to a novel 5-dehydro-2-deoxygluconokinase variant and a method of producing 5′-inosinic acid using the same. The 5-dehydro-2-deoxygluconokinase variant is obtained by substituting one or more amino acids in the amino acid sequence constituting 5-dehydro-2-deoxygluconokinase to change the activity of the protein, and a recombinant microorganism comprising the 5-dehydro-2-deoxygluconokinase variant is capable of efficiently producing 5′-inosinic acid.

This invention provides a kit for the simultaneous detection of nine flavor nucleotides in livestock and poultry products. The flavor nucleotides are cytidine monophosphate, uridine monophosphate, guanylic acid, inosine monophosphate, adenosine monophosphate, hypoxanthine, inosine, adenosine diphosphate, and adenosine triphosphate. The kit includes: a high-concentration extraction reagent, a standard curve solution, a high-concentration phosphate buffer solution, pH adjustment solution A, and pH adjustment solution B. The high-concentration extraction reagent is perchloric acid; the standard curve solution is a mixed solution of the nine flavor nucleotides; the high-concentration phosphate buffer solution is a solution of potassium dihydrogen phosphate and dipotassium hydrogen phosphate; pH adjustment solution A is sodium hydroxide; and pH adjustment solution B is phosphate. This invention also provides a method for the simultaneous detection of the nine flavor nucleotides using the above kit. This invention enables the simultaneous determination of the content of nine flavor nucleotides in livestock and poultry products. The method is simple, rapid, accurate, and sensitive, and can be used for batch determination, showing good prospects for practical application.

The present invention relates to a novel ABC transporter permease variant and a method for producing 5 '-inosinic acid using the same. The ABC transporter permease variant has a modified protein activity due to the substitution of one or more amino acids in the amino acid sequence constituting the ABC transporter permease, and thus a recombinant microorganism comprising the ABC transporter permease variant can efficiently produce 5 '-inosinic acid.

The application relates to a production method and application of combined fermentation of bupleurum and lonicera japonica residues by bacillus velezensis and pediococcus acidilactici, and belongs to the technical field of biotechnology. The bupleurum and lonicera japonica residues are treated by adopting a process of enzymolysis first and then fermentation, wherein the composite enzyme comprises cellulase, beta-glucanase, xylanase, beta-mannanase and phytase; and the fermentation bacteria comprise bacillus velezensis and pediococcus acidilactici. The fermented bupleurum and lonicera japonica residues provided by the application have a high release amount of active ingredients (chlorogenic acid, forsythoside and baicalin), and the addition ratio in broiler chickens is 2.0%-4.0%. The application effect includes improving growth performance, improving the levels of anti-inflammatory factor IL-10 and serum immunoglobulin IgM of the body, improving the muscle quality and flavor characteristics of the breast muscle, and improving the contents of inosinic acid, intramuscular protein, flavor amino acid and total amino acid. The product can not only improve the yield and quality of livestock products, but also relieve the pressure on the environment caused by solid waste residues, and has a good market prospect.

The invention relates to the technical field of condiments, in particular to an astragalus-flavored composition containing yeast extract and soybean protein hydrolysate. Comprising the following raw materials in parts by weight: 35-40 parts of table salt, 10-15 parts of yeast extract (YE), 13-17 parts of rice flour, 8-12 parts of starch, 10-14 parts of soybean protein hydrolysate, 3-5 parts of astragalus membranaceus powder, 1-3 parts of Chinese wolfberry fruit powder, 1-3 parts of red date powder and 0.5-1.5 parts of mulberry fruit powder. 5 '-inosinic acid in the yeast extract is used for reducing the perception of saponin substances in the astragalus membranaceus powder by occupying a taste system, so that the bitter taste is reduced; hydrophobic polypeptide in the soybean protein zymolyte is combined with saponin, so that the content of bitter substances is substantially reduced; the combination of astragalus membranaceus for tonifying qi, medlar for nourishing yin, red dates for replenishing blood and mulberry for nourishing liver and kidney conforms to the concept of tonifying qi and blood in traditional Chinese medicine, and is suitable for weak or sub-healthy people.

The present invention relates to a novel 5-dehydro-2-deoxygluconokinase variant and a method of producing 5′-inosinic acid using the same. The 5-dehydro-2-deoxygluconokinase variant is obtained by substituting one or more amino acids in the amino acid sequence constituting 5-dehydro-2-deoxygluconokinase to change the activity of the protein, and a recombinant microorganism comprising the 5-dehydro-2-deoxygluconokinase variant is capable of efficiently producing 5′-inosinic acid.

The application belongs to the technical field of crystallization, and relates to a crystallization method of inosine disodium phosphate with controllable crystal size. The method comprises the following steps: mixing inosine disodium phosphate crude product with water and adjusting pH to obtain inosine disodium phosphate crude product aqueous solution; under the condition of constant temperature stirring, adding anhydrous ethanol to the crystallization system until turbidity appears in the system, stopping the addition of ethanol, then adding inosine disodium phosphate / ethanol suspension liquid to carry out the first crystal growth; after the first crystal growth is completed, continue to add anhydrous ethanol, and at the same time, the temperature of the crystallization system is lowered, and the second crystal growth is carried out under stirring; after the second crystal growth is completed, solid-liquid separation and drying are carried out to obtain inosine disodium phosphate crystals. Through step-by-step crystal growth and regulation, the effective control of the crystal size is realized, the process is stable, the product quality is excellent, the obtained inosine disodium phosphate crystals have controllable particle size, good fluidity and high purity.

The present invention discloses a pharmaceutical composition, its manufacturing method, and its use, wherein the pharmaceutical composition comprises a first active ingredient, a second active ingredient, and a pharmaceutically acceptable carrier or excipient, the first active ingredient being a microbial agent containing one or more of Staphylococcus aureus, Bordetella pertussis, diphtheria toxoid, tetanus toxoid, Salmonella typhi, or Salmonella paratyphi, and the second active ingredient comprising polyinosinic acid, polycytidylic acid, and vitamins. The pharmaceutical composition is an artificial active immunotherapy for tumors, which, by "stimulating" the entire immune system, activates the human immune system using bacteria to kill cancer cells, making the treatment extremely stable and reliable, significantly saving and extending the lives of cancer patients, while simultaneously being extremely safe, having very few toxic side effects, and having low manufacturing costs.

The invention discloses a phosphotransferase mutant with improved catalytic activity, and belongs to the field of biology and food. On the basis of a phosphotransferase female parent sequence, the 72nd site, the 104th site and the 136th site are substituted. The enzyme activity of the constructed mutant is improved from 46.2 U / mg to 213.2 U / mg in a whole-cell catalytic enzyme activity test of inosine compared with that of a female parent mature enzyme. The phosphotransferase variant disclosed by the invention benefits from the improved catalytic activity, is more beneficial to stable application in a harsh industrial environment, can be used for producing food flavoring agents such as disodium inosinate and the like, and is widely applied to the fields of food and biology.

According to the composite ham soy sauce seasoning and the preparation method thereof, the soy sauce seasoning is prepared, hydrolyzed amino acids from soybeans and wheat and rich glutamic acid, inosinic acid and guanylic acid in ham lean meat, ham bones and ham skins are in synergistic interaction, and the palatable taste of the soy sauce is improved. Compared with traditional fermented soy sauce, the ham fermented soy sauce has the advantages that the ham fermented soy sauce is prepared by adaptively performing differentiation treatment on materials of different parts of ham, adding a fermentation process in different stages according to an adaptive proportion formula, and strictly controlling fermentation, especially a long-time low-temperature ripening process and a subsequent post-treatment process; ham skin, ham lean meat and ham bone materials are improved to the maximum extent to endow the soy sauce with corresponding essence substances, the essence substances deeply participate in the whole brewing process of the soy sauce, and compared with the soy sauce with ham flavor in the prior art, the ham sauce is added into the soy sauce after being stewed, so that the ham flavor is obtained. According to the technical scheme, the final soy sauce product can have the advantages of concentration, complexity and unique ham flavor.

The present invention relates to a novel phosphoenolpyruvate carboxylase variant and a method of producing 5′-inosinic acid using the same. The phosphoenolpyruvate carboxylase variant is obtained by substituting one or more amino acids in the amino acid sequence constituting phosphoenolpyruvate carboxylase to change the activity of the protein, and a recombinant microorganism comprising the phosphoenolpyruvate carboxylase variant is capable of efficiently producing 5′-inosinic acid.

The present invention relates to a novel mutant of an ABC transporter permease and a method for producing 5'-inosinic acid using the same. In the ABC transporter permease mutant, one or more amino acids in the amino acid sequence constituting the ABC transporter permease are substituted, resulting in a change in the activity of the protein, and a recombinant microorganism containing the same can efficiently produce 5'-inosinic acid.

The invention discloses a molecular marker related to a chicken inosinic acid content character and a breeding application method thereof, and belongs to the technical field of molecular breeding. The InDel molecular marker corresponds to a No. 5 chromosome 14, 447 and 547 bp (the genotype is CTGAAACTGAAA, CTGAAAC and CC) in the version sequence information of a chicken reference genome Galusgallus-6. 0 published in NCBI (National Center of Biotechnology Information). The basic group is a favorable genotype with a CTGAAACTGAAA genotype as a site, and the content of inosinic acid in an individual carrying the basic group is obviously higher than that of an individual carrying a CC genotype. The molecular marker is used for molecular-assisted breeding, screening of high inosinic acid individuals can be achieved in the early stage, the production cost is effectively reduced, the genetic improvement progress is promoted, and high economic benefits and application values are achieved.

The application discloses a molecular marker related to a chicken meat inosinic acid content character and a breeding application method thereof, and belongs to the technical field of molecular breeding. The InDel molecular marker corresponds to the sequence information of a chicken reference genome Gallus_gallus-6.0 version sequence information No. 5 chromosome 14,447,547 bp (genotype CTGAAACTGAAA, CTGAAAC, CC). Here, the base is the advantageous genotype of the CTGAAACTGAAA genotype of the site, and the inosinic acid content of the individual carrying the site is significantly higher than that of the individual carrying the CC genotype. Molecular assisted breeding using the molecular marker can realize screening of high inosinic acid individuals at an early stage, effectively reduce production costs, promote genetic improvement progress, and has high economic benefits and application value.

The purpose of the present invention is to provide: a food composition which is prepared using non-edible parts of a mushroom, but is less likely to generate earthy flavor and has mellow flavor; and a method for producing the food composition. The food composition is configured such that: (1) the total amount of edible parts and non-edible parts of a mushroom is 10 mass% or more; (2) the amount of dietary fibers is 2.0 mass% or more; (3) the ratio of the adenylic acid content (A2) to the guanylic acid content (A1) is 1.8 or less; and (4) the inosinic acid content (A3) is 0.03 mass% or more. The production method comprises (i) a step for preparing a mixture containing (1) edible parts and non-edible parts of a mushroom in a total content of 10 mass% or more and (2) dietary fibers in an amount of 2.0 mass% or more, and (ii) a step for adjusting the properties of the mixture so as to satisfy all of the following requirements: (3) the ratio of the adenylic acid content (A2) to the guanylic acid content (A1) is 1.8 or less; and (4) the inosinic acid content (A3) is 0.03 mass% or more.