108 results about "Candida sp" patented technology

The invention relates to a compound bulbus fritilariae cough-relieving composition, syrup and a preparation method thereof, and belongs to the technical field of traditional Chinese medicines. The compound bulbus fritillariae cirrhosae cough-relieving composition is prepared from traditional Chinese medicine fermented particles, radix rehmanniae preparata, radix rehmanniae, radix angelicae sinensis, radix paeoniae alba, bulbus fritillariae cirrhosae, radix ophiopogonis and lilium brownii. The traditional Chinese medicine fermented particles are prepared from liquorice, platycodon grandiflorum and radix scrophulariae as raw materials through the following steps: firstly, carrying out enzymolysis on the raw materials by using cellulase to obtain enzymatic hydrolysate; the compound bulbus fritillariae cirrhosae cough-relieving composition is prepared by the following steps: performing enzymolysis on bulbus fritillariae cirrhosae, performing mixed fermentation on enzymatic hydrolysate by using lactobacillus plantarum, candida utilis and eurotium cristatum to obtain fermentation liquor, and performing sterilization, filtration, concentration and granulation on the mixed fermentation liquor to obtain traditional Chinese medicine fermentation granules, so that the obtained compound bulbus fritillariae cirrhosae cough-relieving composition has good effects of nourishing yin, moistening lung and relieving cough and asthma.

The invention belongs to the technical field of food, and discloses a fruity Kangpu tea beverage and a preparation method thereof. The preparation method of the fruity Kangpu tea beverage comprises the following steps: S1, mixing tea sugar water, a candida utilis yeast seed solution and an acetobacter xylinum seed solution, and performing primary fermentation to obtain a primary fermentation solution; and S2, mixing the primary fermentation liquid, the fruit pulp, the candida utilis seed liquid and the lactobacillus plantarum seed liquid, carrying out secondary fermentation, and sterilizing to obtain the fruity Kangpu tea beverage. According to the method, fermentation is performed twice, specific zymophyte is adopted, phenolic substances and flavonoid substances in the tea leaves are fully released through glycolysis, the total acid content is reduced, and the fermentation period is shortened; meanwhile, the fruit pulp is added in the secondary fermentation process, so that the astringent taste and the unpleasant odor in the fermentation process are effectively covered, and the prepared Kangpu tea beverage is softer in taste, more layered in flavor and richer and fuller in taste.

The invention discloses a urinary system infection pathogen and drug resistance gene detection system and a kit. The detection system comprises forward and reverse primers which are respectively used for detecting escherichia coli, staphylococcus aureus, acinetobacter baumannii, klebsiella pneumoniae, enterococcus faecium, candida glabrata, proteus mirabilis, enterococcus faecalis, candida tropicalis, enterobacter cloacae, candida albicans, pseudomonas aeruginosa and streptococcus agalactiae; the forward primer and the reverse primer are respectively used for detecting the blaCTX-M gene of the extended spectrum beta-lactamase, the forward primer and the reverse primer are used for detecting the blaSHV gene of the extended spectrum beta-lactamase, and the forward primer and the reverse primer are used for detecting the blaTEM gene of the extended spectrum beta-lactamase. According to the forward and reverse primers for detecting the blaNDM gene of the extended-spectrum beta-lactamase, a detection sample is urine. According to the invention, common gram-negative bacteria, gram-positive bacteria and fungi can be detected at the same time, and the problem of missed detection of mixed infection in traditional culture is solved.

The invention belongs to the technical field of environmental protection of bioremediation wastewater, and discloses an immobilized adsorption microsphere, which is prepared from Bacillus spp., Candida utilis and European nitrosomonas through an immobilized embedding technology. The microspheres provided by the invention can effectively repair glutamic acid high ammonia nitrogen fermentation wastewater.

The invention discloses a method for preparing acid sophorolipid, and belongs to the technical field of biological fermentation. According to the method, candida is used as a fermentation strain, a composite carbon source culture medium containing a water-soluble carbon source and an oil-soluble carbon source is adopted, and the content of residual oil is monitored in real time in the fermentation process; when the residual oil content exceeds a threshold value of 5g / L, the emulsifying agent of 0.1 g / L-0. 5g / L is supplemented, and the stirring rotating speed is increased by 20-50rpm, so that the emulsification of an oil phase and the utilization of the thalli on the oil-soluble carbon source are promoted. By accurately controlling the residual oil content in the fermentation process, the proportion of the acidic sophorolipid and the carbon source conversion rate are remarkably increased, the proportion of the acidic sophorolipid is increased to 60% from 30% of a traditional process, the carbon source conversion rate is increased to 65% from 40%, the problems that the increasing means of the proportion of the acidic sophorolipid is single, and the carbon source is wasted are effectively solved, and the method is suitable for industrial production. The method has the advantages of simple process, low cost, environmental protection and the like.

The invention discloses an organic fertilizer suitable for tea yield increase and insect killing and a preparation method thereof, and relates to the technical field of organic fertilizer and microbial fertilizer manufacturing. The organic fertilizer is prepared from straw, chicken manure, radix inulae, clinacanthus nutans, affine cudweed, periploca forrestii schltr, ellagic acid-rice protein zymolyte, sodium laurate modified diatomite, sodium humate, urea, compound microorganism bacteria and water. The compound microorganism bacterium is composed of candida utilis saccharomycetes and neurospora intermedia. The compound microorganism bacteria in the organic fertilizer are beneficial to accelerating fermentation decomposition of the straw, the chicken manure, the sodium humate, the urea and the traditional Chinese medicine plants and promoting macromolecular substances to be converted into micromolecular active ingredients, then ellagic acid-rice protein zymolyte and sodium laurate modified diatomite are supplemented, and the yield of tea tree planting is increased through reasonable proportion of nutritional ingredients.

The invention provides a preparation method of a hydrolyzed collagen product with surface amphipathicity as well as the product and application thereof, and the preparation method comprises the following steps: (1) taking hydrolyzed collagen enzymatic hydrolysate as a substrate, then preparing a fermentation culture medium with vegetable oil and sugar, and fermenting by adopting candida bumblebee; (2) after fermentation, adding lysozyme into the fermentation liquor for activating treatment, and then sterilizing, centrifuging and filtering; and (3) carrying out freeze-drying treatment on the filtered fermentation liquor to obtain the hydrolyzed collagen product with surface amphipathicity. The hydrolyzed collagen product prepared by the invention not only has low molecular weight and high permeability to skin, but also has water locking and moistening effects on the skin surface due to the amphiphilic sophorolipid on the surface, so that the moisture retention of the skin is better improved, and the product has excellent product characteristics and has wide market prospects.

The invention discloses a method for co-producing erythritol from trehalose mother liquor and sodium gluconate mother liquor. Belongs to the technical field of erythritol production. The invention discloses and provides a method for co-producing erythritol from trehalose mother liquor and sodium gluconate mother liquor, which comprises the following steps: adding the trehalose mother liquor and the sodium gluconate mother liquor into a fermentation culture medium, fermenting by using candida lipolytica, enabling the conversion rate of the fermented erythritol to be 70%, and simultaneously filtering by using different nanofiltration membranes, according to the method, the erythritol finished product is obtained, the trehalose and sodium gluconate mixed solution is also obtained, and the trehalose and sodium gluconate mixed solution can be added into fermentation liquor again after being dissolved, so that cyclic utilization is realized; the production efficiency is improved, and the cost is saved.

The invention relates to a protein feed prepared from biologically refined distiller's grains and a preparation method thereof, and relates to the technical field of bioengineering and feed resource development. The method comprises the following steps: (1) sequentially carrying out acid pretreatment and double-enzyme synergistic hydrolysis on the white spirit vinasse to obtain hydrolysate containing fermentable sugar; (2) adding a candida utilis yeast liquid and urea, and carrying out carbon-nitrogen synergistic liquid fermentation to obtain a fermentation liquid with the viable count of candida utilis greater than or equal to 4.0 * 10 < 8 > CFU / mL; and drying. According to the method, the white spirit vinasse is subjected to diluted acid high-pressure pretreatment and double-enzyme synergistic hydrolysis, then candida utilis is utilized for carbon-nitrogen synergistic liquid fermentation, efficient utilization of glucose and xylose is achieved, and the mycoprotein yield is larger than or equal to 0.70 g / L / h; according to the method, all-component high-value utilization of the distiller's grains is realized, and a process path with industrial production potential is provided for preparing the protein feed by biorefining the distiller's grains.

The invention discloses a processing method and application of edible fungus chaff. The processing method comprises the following steps: crushing the edible fungus chaff to obtain fungus chaff particles; carrying out extrusion puffing treatment on the mushroom bran particles by adopting a twin-screw extruder to obtain a puffed material; drying and crushing the puffed material to obtain puffed mushroom bran powder; mixing puffed mushroom bran powder, bean dregs and cellulase to serve as a fermentation substrate, and adding the mixed bacterial liquid into the fermentation substrate to form fermentation mixed liquid; the mixed bacterial liquid is formed by mixing a candida utilis bacterial liquid, a lactobacillus plantarum bacterial liquid and a bacillus subtilis bacterial liquid; and fermenting the fermentation mixed solution under a ventilation condition to obtain a final edible mushroom bran product. Compared with a traditional processing method, the content of crude protein, the content of acid-soluble protein and the protein dispersion index of the edible fungus chaff processed through the processing method are all remarkably improved, and the content of crude fiber, neutral detergent fiber and acid detergent fiber is all remarkably reduced.

The invention relates to the field of plant growth regulators, and discloses a stress-resistant agent for improving cold resistance of crops and a preparation method and application thereof. The candida mycoderma bacteria comprise candida mycoderma bacteria XHZG06-95A3 and / or a fermentation liquid supernatant thereof, and further comprise an anti-freezing protective protein, the candida mycoderma bacteria XHZG06-95A3 belongs to Candida palmioleophila in taxonomy, and the preservation number of the candida mycoderma bacteria XHZG06-95A3 is CGMCC (China General Microbiological Culture Collection Center) No.29215; the amino acid sequence of the anti-freezing protection protein is shown as SEQ ID NO: 1. In the stress-resistant agent disclosed by the invention, the candida mycoderma bacteria XHZG06-95A3 and / or a fermentation liquid supernatant thereof can be utilized to enhance the action effect of the anti-freezing protection protein, so that the cold resistance of crops is improved to a greater extent.

The present application relates to the technical field of genetic engineering, and in particular to a high-yield sophorolipid gene knockout engineering bacterium, a construction method thereof and an application, the engineering bacterium taking Bombus bornensis Candida as a starting strain, and using a gF-Hph-gR nucleotide sequence to replace a gene sequence seq2 in a sophorolipid synthesis path for regulating a lactonization reaction ， The gF-Hph-gR nucleotide sequence is SEQ ID No. 1, and the seq2 gene sequence is SEQ ID No. 2. The method provided by the present application uses fusion PCR to construct a seq2 gene knockout box with a resistance screening marker, and the shortest time required is 1 day, which provides a new way for efficiently constructing a sophorolipid production engineering strain. The high-yield sophorolipid gene knockout strain provided by the present application lays a foundation for large-scale industrial production of sophorolipid and meets market demand, and has a wide application prospect, economic value and social benefit.

This invention relates to a protein feed prepared from biorefined baijiu lees and its preparation method, belonging to the fields of bioengineering and feed resource development technology. It includes the following steps: (1) subjecting the baijiu lees to acid pretreatment and dual-enzyme synergistic hydrolysis sequentially to obtain a hydrolysate containing fermentable sugars; (2) adding Candida utilis culture and urea for carbon-nitrogen synergistic liquid fermentation to obtain a Candida utilis viable count ≥4.0 × 10⁻⁶. 8 Fermentation broth with CFU / mL; drying is then performed. This invention pretreats baijiu (Chinese liquor) lees under high pressure with dilute acid, followed by synergistic hydrolysis with two enzymes, and then utilizes *Candida utilis* for carbon-nitrogen synergistic liquid fermentation, achieving efficient utilization of glucose and xylose, with a cell protein yield ≥0.70 g / L / h. This invention realizes the high-value utilization of all components of baijiu lees, providing a process route with industrial-scale production potential for the biorefining of baijiu lees to prepare protein feed.

The present application relates to the field of pharmaceutical chemistry, and specifically discloses a emodin mannich base, a preparation method and application thereof. The emodin mannich base has a structure as shown in formula I, the structure is simple, has strong in-vitro antimicrobial activity, especially high inhibitory activity to staphylococcus aureus, bacillus subtilis, micrococcus luteus, escherichia coli, proteus vulgaris, pseudomonas aeruginosa, shigella dysenteriae, salmonella typhimurium and other bacteria, and candida utilis, candida albicans, saccharomyces cerevisiae, monascus and other fungi, and can be used for preparing antibacterial and / or antifungal drugs.

The invention belongs to the technical field of cosmetics, and discloses an avocado fermentation composition as well as a preparation method and application thereof. The composition comprises 1%-10% of avocado fermentation filtrate, 0.1%-2% of alpha-glucan oligosaccharide, 0.1%-2% of a wild chrysanthemum flower extract, 3%-8% of a humectant, 0.01%-0.1% of a chelating agent and the balance of deionized water. Wherein the avocado fermentation filtrate is prepared by compound fermentation of aphid torulopsis and candida and is rich in oligopeptide, free amino acid, lactic acid and polyphenol. According to the invention, the filtrate obtained by fermenting avocado with a specific composite strain is scientifically compounded with prebiotics with definite flora selectivity to construct a multifunctional composition with definite structure, synergistic function and high stability; the composition not only provides direct barrier repairing and moisturizing effects, but also actively guides skin micro-ecology to succession to a healthy steady state through nutrition intervention, so that the skin health level is synchronously improved in the two dimensions of molecules and ecology.

The application provides a composite microbial agent, application of the composite microbial agent and a treatment method of high-concentration organic wastewater. The active component of the composite microbial agent provided in the first aspect of the application comprises two or three of Paecilomyces varioti MM2 strain, Aspergillus fumigatus MM6 strain, Candida rugosa MJ4 strain and Bacillus licheniformis MX8 strain. The composite microbial agent provided in the first aspect of the application can be used for biological decontamination treatment of high-concentration organic wastewater, so as to realize degradation of organic pollutants in the high-concentration organic wastewater and pH value adjustment, thereby avoiding increase of the load of a municipal sewage treatment system.

The utility model relates to a coffee wastewater treatment device, which belongs to the technical field of coffee processing wastewater treatment and comprises a sediment pool, an adjusting pool, a yeast reactor, a solid-liquid separator, a water distribution pool, an A / O biochemical pool and a secondary sedimentation tank. The yeast reactor is internally provided with an aeration device and is filled with microbe beads, the microbe beads are in a fluidized state, and candida mycoderma bacteria are adsorbed on the microbe beads; the sediment tank is communicated with the regulating tank through an overflow pipe; the adjusting tank is communicated with the yeast reactor through a lifting pump and a pipeline; a water inlet of the solid-liquid separator is communicated with a water outlet pipeline of the yeast reactor; two overflowing partition plates are arranged in the A / O biochemical pool to divide the A / O biochemical pool into a hydrolysis area, a denitrification area and a nitrification area; effective treatment of wastewater can be achieved without adding alkali, an anaerobic reactor which is low in starting speed, high in water inlet condition requirement and unstable in operation in a conventional process can be replaced, up-to-standard discharge of sewage is achieved, and in addition, the device is short in starting time, good in system stability and capable of adapting to changes of the quality and the quantity of the sewage.

The invention discloses an hph resistance gene knockout box based on gme5 gene editing, a genetically engineered bacterium and application of the hph resistance gene knockout box and the genetically engineered bacterium. The hph resistance gene knockout box comprises a recombinant DNA construction body with the nucleotide sequence shown as SEQ ID NO: 1, the recombinant DNA construction body replaces an endogenous regulatory factor gme5 gene through homologous recombination in a targeted mode, and the nucleotide sequence of the regulatory factor gme5 gene is shown as SEQ ID NO: 2. According to the application, the bumblebee candida albicans are directionally modified through a genetic engineering strategy, an engineering strain for synthesizing the high-yield lactone type sophorolipid is constructed, and the lactonase activity and fatty acid transport capacity are synergistically enhanced, so that the ratio of the lactone type sophorolipid is maximized, and the yield of the lactone type sophorolipid is increased. In the sophorolipid produced by using the genetically engineered bacterium and the fermentation production method disclosed by the invention, the total content of the sophorolipid is 358.77 g / L, and the lactone content accounts for 74% or more of the total sophorolipid, so that the separation and purification difficulty and the production cost are greatly reduced, and an efficient and low-cost solution is provided for industrial fermentation production of the sophorolipid.

The invention relates to the technical field of microorganisms, and discloses a candida tropicalis strain. The candida tropicalis strain is a candida tropicalis SDU2 strain, the classification name is Candida tropicalis, the preservation number is CGMCC No.34306, the preservation date is April 23, 2025, the preservation unit is China General Microbiological Culture Collection Center, and the preservation address is Institute of Microbiology, Chinese Academy of Sciences, No.3, Beichen West Road, Chaoyang District, Beijing. The candida tropicalis SDU2 strain has grease production capacity and high-temperature tolerance, and can convert waste biomass into biodiesel. The microbial inoculum prepared from the candida tropicalis SDU2 strain can be synchronously saccharified and fermented with biomass, so that the problem of high cost caused by poor strain adaptability in the traditional biomass high-valued comprehensive utilization process can be solved. The invention further discloses a candida tropicalis agent as well as a preparation method and application thereof.

The application belongs to the technical field of microorganisms, and provides application of Propionibacterium freudenreichii subsp. shermanii in preparation of products for improving constipation and depression, wherein the Propionibacterium freudenreichii subsp. shermanii NHNK-616 is preserved in the China Center for Type Culture Collection on July 1, 2024, and the preservation number is CCTCC NO: M 20241429. The inventors find that NHNK-616 has the functions of promoting 5-HT secretion, up-regulating intestinal aquaporin and brain-derived neurotrophic factor genes, metabolically producing gamma-aminobutyric acid, inhibiting growth of Candida albicans, inhibiting hypha formation of Candida albicans, combining with hypha of Candida albicans, and up-regulating expression of intestinal defensin and mucin genes, and therefore can be used for preparing products for improving constipation and depression.

The invention discloses a biological pretreatment method for improving the true protein production efficiency of wet distiller's grains, and belongs to the technical field of biological pretreatment, the method comprises the following steps: by combining chemical and biological multi-stage pretreatment modes, alkali and urea are combined in the first-stage chemical treatment process, and the second-stage chemical treatment process is combined in the second-stage chemical treatment process; the fiber structure of the wet distiller's grains is better damaged at normal temperature, and infectious microbe pollution is reduced for subsequent fermentation. In the second-stage anaerobic fermentation treatment, fibers in the wet distillers' grains are converted into sugar through the synergistic effect of bacteria and enzymes, the pH of the wet distillers' grains is reduced, and conditions are provided for growth of subsequent aerobic fermentation candida utilis yeast thalli. In the third stage of aerobic fermentation treatment of the candida utilis, urea and fiber in the pretreatment process in the early stage are used for degrading sugar to generate mycoprotein, so that the true protein improvement rate and the fiber degradation rate of the white spirit vinasse after pretreatment are effectively improved, the loss rate in the pretreatment process is greatly reduced, and finally, the true protein production efficiency of the wet white spirit vinasse is improved.

This invention discloses an overexpression Met15 This invention relates to a genetically engineered strain of *Candida utilis*, its construction method, and its applications, belonging to the field of bioengineering technology. The starting strain of the genetically engineered strain described in this invention is *Candida utilis*. C. utilis CCTCC NO: M 209298, strain overexpressing O-acetylhomoserine thioylase. Met15 Gene. This invention utilizes gene recombination technology to overexpress the O-acetylhomoserine sulfhydrylase encoding gene in *Candida utilis* (…). Met15 This can increase the content of L-methionine and L-cysteine ​​in yeast cells, increase the supply of sulfur-containing amino acid precursors, and ultimately increase the yield of SAM and GSH co-production in yeast cells.

The application provides a Candida viswanathii CATH2402, the preservation number of which is CCTCC NO: M 20241166, and also provides application of the aforementioned Candida viswanathii in fermentative production of azelaic acid, and a production method of azelaic acid. The Candida viswanathii CATH2402 can utilize various substrates to fermentatively produce azelaic acid, and has high tolerance to the product azelaic acid, thereby significantly improving the yield of azelaic acid by biological method, and having the potential for industrialized scale production.

The application discloses a biological pretreatment method for improving the efficiency of producing true protein from wet distiller's grains, and belongs to the technical field of biological pretreatment, which comprises the following steps: by combining chemical and biological multi-stage pretreatment methods, alkali and urea are used in the first chemical treatment process to realize better destruction of the fiber structure of the wet distiller's grains at normal temperature and reduce the contamination of miscellaneous bacteria in subsequent fermentation; the second anaerobic fermentation treatment converts the fibers in the wet distiller's grains into sugar through the synergistic effect of bacteria and enzymes, and reduces the pH of the wet distiller's grains, thereby providing conditions for the growth of Candida utilis in subsequent aerobic fermentation; and the third aerobic fermentation treatment utilizes the urea and fiber degradation sugar in the previous pretreatment process to generate cell protein, effectively improves the true protein improvement rate and fiber degradation rate of the distiller's grains after the pretreatment is completed, greatly reduces the loss rate in the pretreatment process, and finally improves the efficiency of producing true protein from the wet distiller's grains.

The application belongs to the technical field of microorganisms, and discloses a propionic acid-producing propionic acid bacteria NHNK-621 and application of the propionic acid bacteria in preparation of products for improving constipation and memory, the bacteria strain has been preserved in the China Center for Type Culture Collection on November 25, 2024, and the number is CCTCC NO: M 20242631. The propionic acid bacteria NHNK-621 provided by the application has the functions of promoting 5-HT secretion, up-regulating intestinal aquaporin and brain-derived neurotrophic factor genes, metabolically producing gamma-aminobutyric acid, inhibiting growth of Candida albicans, inhibiting hypha formation of Candida albicans, combining with hypha of Candida albicans, up-regulating intestinal defensin and mucin gene expression, in addition, the bacterial biofilm can increase the colonization ability to intestinal epithelial cells, and can be used for preparing products for improving constipation and memory.

The invention discloses a fermentation process and application of citric acid waste residues, and belongs to the technical field of biotech, the fermentation process comprises the following steps: S1, uniformly mixing citric acid waste residue powder, wheat bran and rice hull powder balls, performing high-pressure steam sterilization, adding sterile water, a urea solution and a basic nutrient solution, and uniformly stirring to obtain a fermentation substrate; s2, the fermentation substrate is placed in a fermentation tank, aspergillus niger liquid is inoculated, fermentation culture is conducted for 60-96 h, then candida utilis yeast liquid is inoculated, fermentation culture is conducted for 36-72 h, finally, lactobacillus plantarum liquid is inoculated, fermentation culture is conducted for 48-72 h, and the fermentation process is completed. Time sequence regulation and control are performed on flora metabolism, and finally the goals that the crude protein content of a fermentation product is obviously increased and the crude fiber content is effectively reduced are achieved.

The invention discloses application of leuconostoc mesenteroides subsp. Mesenteroides in improvement of constipation and depression, and belongs to the technical field of marine microorganisms. The invention discloses a leuconostoc mesenteroides subsp. Mesenteroides NHNK-613, which is preserved in the China Center for Type Culture Collection on July 1, 2024, and the preservation number of the leuconostoc mesenteroides subsp. Mesenteroides NHNK-613 is CCTCC (China Center for Type Culture Collection) NO: M 20241431. The NHNK-613 has the functions of promoting 5-HT secretion, up-regulating intestinal aquaporin and brain-derived neurotrophic factor genes, metabolizing to generate gamma-aminobutyric acid, inhibiting the growth of candida albicans, inhibiting the formation of candida albicans filaments, combining the candida albicans filaments and up-regulating intestinal defensin and mucoprotein gene expression; the traditional Chinese medicine composition can be used for preparing products for improving constipation and depression.

The invention belongs to the technical field of waste converted fertilizers. The invention provides a composite bio-organic fertilizer as well as a preparation method and application thereof, and the composite bio-organic fertilizer comprises the following components in parts by weight: 95-100 parts of a honeysuckle residue fermentation product, 31-33 parts of calcium oxide, 8-9 parts of struvite and 5-7 parts of nitrogen-doped biochar, the honeysuckle residue fermentation product is prepared by fermenting honeysuckle residues through a complex microbial inoculant, and the complex microbial inoculant comprises chaetomium thermophile, sporotrichum thermophile, paenibacillus polymyxa, bacillus mucilaginosus and candida utilis. The total content of nitrogen, phosphorus and potassium and the long-term fertilizer efficiency performance of the prepared composite bio-organic fertilizer can be improved, and it is ensured that the composite bio-organic fertilizer has the remarkable yield increasing effect on cucumber planting.

The application discloses a Candida utilis strain for efficiently converting ethanol / acetic acid and application thereof, and belongs to the technical field of single-cell protein production. In view of the technical problems of limited biomass accumulation, low carbon source conversion efficiency and low protein yield of a wild-type Candida utilis strain when the mixed carbon source of ethanol and acetic acid is used, the application provides the Candida utilis TU546 strain with the preservation number of CGMCC NO. 39030, and the strain is cultured in a fermentation medium containing the mixed carbon source of ethanol and acetic acid, so that the fermentation strain body with high protein content is obtained, and efficient conversion from the mixed carbon source of ethanol and acetic acid to single-cell protein is realized. The strain and the method thereof are mainly used for producing single-cell protein products, and can be used as feed or food additives, and have important application value in the microbial fermentation industry.

The present invention relates to a derivative compound comprising an amino nicotinamide structure, an isomer thereof or a pharmaceutically acceptable salt thereof, and an antifungal pharmaceutical composition comprising same. More specifically, the present invention provides a benzyloxybenzylamine amino acid derivative having few side effects, and an antifungal agent comprising same. The antifungal agent has a range having antifungal activity against fungi selected from Candida sp., Sporothrix sp., Malassezia sp., Cryptococcus sp., Aspergillus sp., Pneumocystis sp., and Mucor sp.