24 results about "Dimethyl trisulfide" patented technology

The invention discloses a gas sensor for detecting dimethyl trisulfide, which is obtained by taking a Cu-doped Co3O4 porous nanorod material as a sensitive body and coating the surface of an electrode with dispersion liquid of the Cu-doped Co3O4 porous nanorod material and drying. According to the invention, Cu-doped Co3O4 is combined with means of porous structure optimization and the like, so that the interaction of dimethyl trisulfide molecules on the surface of the obtained sensor can be remarkably improved, the selectivity and sensitivity of the sensor to dimethyl trisulfide are effectively ensured, and efficient detection of dimethyl trisulfide is realized; the related preparation method is simple, good in repeatability, simple in detection method, high in accuracy and suitable for popularization and application.

The application relates to the technical field of mold removers, in particular to a preparation method of a composite mold remover and the composite mold remover. The preparation method of the composite mold remover comprises the following steps: S1. preparing modified montmorillonite; S2. culturing Brevibacillus parvus in a culture medium, obtaining Brevibacillus parvus bacterial liquid after the culturing is completed, and then preparing the obtained bacterial liquid into dry powder; S3. mixing methyl mercaptoacetate, dimethyl trisulfide and 3-methyl butyl sulfide S-methyl ester with water, and then adding the dry powder to obtain a mixed solution; S4. mixing the mixed solution with the modified montmorillonite to obtain a composite mold remover preparation; and S5. drying and packaging the composite mold remover. The composite mold remover obtained by the application is applied to moldy feed, and excellent mold removal effect can be achieved after 24 hours of mold removal treatment.

The present application relates to a kind of pentose pediococcus and the preparation method of fermented whey.The present application provides a kind of pentose pediococcus IF2, on December 31, 2025, is preserved in Guangdong Microbial Culture Collection Center, and the preservation number is GDMCC No:67584.The strain is isolated from Xinjiang yogurt, with good whey adaptability and flavor promotion capacity.After the single bacteria fermentation whey, the content of dimethyl disulfide, dimethyl trisulfide in whey can be significantly reduced, while the content of acetaldehyde and other flavor compounds is greatly improved, and fermented whey is given apple fragrance.Sensory evaluation shows that the overall preference score of fermented whey can reach 4.6 points, and the flavor is significantly improved.

The application belongs to the technical field of water quality safety intelligent monitoring, and discloses a single smell substance intelligent detection and self-checking system based on an electronic nose sensor array and multi-source information cooperation, which comprises an electronic nose sensor array module (containing a geosmin specificity sensor, a dimethyl isochroman specificity sensor and a dimethyl trisulfide specificity sensor), a multi-parameter monitoring module, a machine learning data processing module and a result output module; the multi-parameter monitoring module collects the dissolved oxygen consumption rate, pH value, conductivity and water temperature of water bodies in real time; and the machine learning data processing module establishes a dynamic correlation model of the single smell substance concentration and characteristic parameters through a machine learning algorithm. The application effectively solves the false positive misjudgment problem under the interference of a complex matrix, improves the detection accuracy to more than 95%, and has a concentration prediction error of less than or equal to 5%, thereby providing reliable technical support for the prevention and control of single smell pollution in drinking water, surface water and other water bodies.

The present invention relates to a polyacrylic acid (salt)-based super absorbent polymer having a surface area–to–apparent volume ratio of 45 mm-1 or more and exhibiting a deodorization rate of 40% or more for dimethyl disulfide (DMDS) or dimethyl trisulfide according to the following Equation 1. [Equation 1] Deodorization rate (%) = (1 x Cs / Co) x 100 (In Equation 1, Cs is a peak area of an odor standard substance in a gas chromatography-mass spectrometry (GC-MS) graph for an odor standard substance solution that has been in contact with a super absorbent polymer at 35°C for 2 hours, and Co is a peak area of an odor standard substance in a gas chromatography-mass spectrometry graph for an odor standard substance solution that has been in contact with a control group at 35°C for 2 hours.)

The invention discloses bacillus amyloliquefaciens capable of producing dimethyl trisulfide as well as an isolated culture method and application of the bacillus amyloliquefaciens, and belongs to the technical field of microorganisms. The bacillus amyloliquefaciens LZLJ2-10 is separated and screened from high-temperature yeast for making hard liquor, the preservation number of the bacillus amyloliquefaciens LZLJ2-10 is CCTCC NO: M 2025366, the bacillus amyloliquefaciens LZLJ2-10 can produce dimethyl trisulfide from wheat, the performance is stable, the bacillus amyloliquefaciens LZLJ2-10 can adapt to high-temperature, high-acid and other environments in the liquor brewing process, when the bacillus amyloliquefaciens LZLJ2-10 is applied to liquor brewing, the content of dimethyl trisulfide in fermented grains is increased to 0.105 microgram / g from undetected, and the content of dimethyl trisulfide in the fermented grains is increased to 0.105 microgram / g from The method enriches a Baijiu brewing microbial resource library, is helpful for researching functional division of microbial communities in the Baijiu brewing process, and provides a theoretical basis for modernized transformation of a traditional process.

The application discloses garlic essence and a preparation method thereof. The garlic essence comprises the following raw materials in mass parts: dimethyl trisulfide 2-5 parts, diallyl trisulfide 1-3 parts, methyl allyl trisulfide 3-6 parts, diallyl sulfide 0.5-2 parts, dicyclohexyl disulfide 1.5-3.5 parts, allyl methyl disulfide 2.5-4.5 parts and 2-methyl-2-butenal 3-5 parts. By adding 2-methyl-2-butenal and / or acetaldehyde diethyl acetal into the garlic essence, the problem of strong irritation of the garlic essence is greatly reduced.

The invention relates to chilli sauce flavor essence as well as a preparation method and application thereof. The essence is prepared from the following raw material components: acetic acid, dimethyl disulfide, ethyl lactate, diallyl disulfide, diallyl trisulfide, allyl methyl disulfide, dimethyl trisulfide, 2-methylbutyric acid, alpha-terpilenol, phenethyl alcohol, phenylpropanol, ethyl caprate, fenugreek lactone, 2-methyl-2-pentenoic acid, linalool, hexanal, eugenol and ethyl caprylate. The chilli sauce is prepared from ethyl maltol, methyl cyclopentenolone, capsicum oleoresin, a chilli sauce Maillard reactant and caprylic capric triglyceride. The chilli sauce flavor essence prepared by the invention not only has the flavor characteristic of chilli sauce, but also has the taste of chilli sauce, and is full and pure in fragrance, high in simulation degree and stable in quality.

Disclosed is an electrochemical system that includes a refillable cell; a catholyte, the catholyte optionally being ionically conductive, and the catholyte optionally comprising at least one of dimethyl disulfide and dimethyl trisulfide; a metallic anode, the metallic anode optionally comprising Li; a cathode current collector configured to contact the catholyte; a polymeric separator disposed to separate the cathode current collector and the metallic anode; and optionally, a binder, and wherein the refillable cell is configured to contact the catholyte and the metallic anode so as to evolve current that is collected by the cathode current collector and to evolve a metallic reaction product, the metallic reaction product comprising a metal of the metallic anode and the metallic reaction product optionally being soluble in the catholyte, and wherein the refillable cell has an inlet configured to receive catholyte and has an outlet configured to communicate therefrom an output that comprises the metallic reaction product.

For example, to provide a composition that can enhance the flavor of grilled squid. [Solution] Use at least one of the 14 aroma components listed in Groups A and B below. Group A: 2,3-butanedione, 3-hydroxy-2-butanone (acetoin), 3-ethylpyridine, 5-methyl-2-hexanone, 3-methylbutanal, and ethyl 3-methylbutanoate. Group B: 2-acetylthiazole, thiazole, 1-heptanol, 2,6-dimethylpyrazine, dimethyl trisulfide, 2,3,5-trimethylpyrazine, (2E,6Z)-2,6-nonadienal, and acetophenone.

The invention discloses application of dimethyl trisulfide in prevention and treatment of plant parasitic nematodes, relates to the field of biological prevention and treatment of crop diseases, and aims to solve the problems that existing chemical agents are high in toxicity and easy to cause environmental pollution. The invention finds that the dimethyl trisulfide can kill the meloidogyne incognita and the soybean cyst nematode by poisoning, and the fatality rates of the dimethyl trisulfide to the meloidogyne incognita and the soybean cyst nematode are 100% when the concentration of the dimethyl trisulfide is 2.34 ppm. In addition, dimethyl trisulfide can inhibit hatching of meloidogyne incognita and soybean cyst nematode eggs. The method is used for preventing and treating plant parasitic nematodes.

This disclosure provides methods and compositions for inhibiting the degradation of dimethyl trisulfide (DMTS) in solution. The concentrated composition comprises DMTS and a polar inorganic or organic solvent. The composition can be stored in a container at 54°C for at least 2 weeks or at room temperature for at least 1 year, with less than 50% of the DMTS degrading. The concentrated composition can be diluted for use and combined with other components to form various solutions.

The application belongs to the technical field of agricultural pest control, and discloses an application of dimethyl trisulfide. The dimethyl trisulfide is applied to a nematicide, and through the determination of the mortality of Bursaphelenchus xylophilus, Meloidogyne incognita and Pratylenchus penetrans, it is found that fumigation and immersion have good killing effects on the three kinds of nematodes. For fumigation, the median lethal concentration of Bursaphelenchus xylophilus is 0.0265 μL / L at 24 h, and the median lethal concentrations of Meloidogyne incognita and Pratylenchus penetrans are 0.1303 μL / L and 0.01786 μL / L at 72 h respectively; for nano-emulsion immersion, the median lethal concentrations of Bursaphelenchus xylophilus, Meloidogyne incognita and Pratylenchus penetrans are 0.0072 mg / mL, 0.0832 mg / mL and 0.0461 mg / mL respectively. The application provides a new choice for the preparation of a new nematicide.

The invention belongs to the technical field of aquatic product processing, and discloses a method for preparing instant-cooking jewfish products by combining subacid electrolyzed water with an ultrahigh pressure technology. According to the invention, a subacid electrolyzed water process, a pickling and fishy smell removal process, a seasoning process and an ultrahigh pressure sterilization treatment process are successfully optimized. The SAEW treatment can maintain the color and texture stability of the fish meat. The content of fishy smell substances such as hexanal, heptanal and dimethyl trisulfide is remarkably reduced through pickling and cooking, aromatic substances such as limonene and alpha-terpilenol are generated, and the finished product is more harmonious in flavor and distinct in layer. The ultrahigh-pressure treatment can prolong the storage period and maintain the texture and taste of the fish meat. Results show that the process flow can significantly improve the product quality, prolong the shelf life and maintain good sensory quality, and a scientific basis is provided for industrial production of instant-cooking weever products.

The invention relates to the technical field of aquatic product processing, and particularly discloses a fishy smell removing method for preparing oyster juice by adopting a compound enzyme preparation. Lipid substances in enzymatic hydrolysate are specifically decomposed through the compound enzyme preparation, meanwhile, the enzymolysis rate of umami amino acids such as glutamic acid is increased, fishy smell precursor substances are reduced or removed, and the taste of the oyster juice is improved. The content of flavor substances such as alcohols and aldehydes in the oyster juice concentrated solution is increased, sulfur-containing heterocyclic compounds such as dimethyl trisulfide and dimethyl disulfide are remarkably reduced, the aroma coordination degree of the oyster juice is optimized, and the quality of the oyster juice product is improved; in addition, the oyster juice yield is increased by about 20% through secondary treatment of the oyster juice concentrate with the compound enzyme preparation.

A method for producing an acetic acid bacteria-containing composition is provided. The method includes culturing acetic acid bacteria of the genus Acetobacter, collecting the bacteria, and washing the bacteria. The acetic acid bacteria-containing composition includes nonanal, methylheptenone, dimethyl trisulfide, and 2-tridecanone so that the peak area ratio of nonanal to methylheptenone (nonanal:methylheptenone) is 1:10 to 100:1, the peak area ratio of nonanal to dimethyl trisulfide (nonanal:dimethyl trisulfide) is 1:100 to 50:1, and the peak area ratio of nonanal to 2-tridecanone (nonanal:2-tridecanone) is 1:100 to 100:1.

The invention discloses garlic essence and a preparation method thereof. The garlic essence is prepared from the following raw materials in parts by mass: 2 to 5 parts of dimethyl trisulfide, 1 to 3 parts of diallyl trisulfide, 3 to 6 parts of methyl allyl trisulfide, 0.5 to 2 parts of diallyl sulfide, 1.5 to 3.5 parts of dicyclohexyl disulfide, 2.5 to 4.5 parts of allyl methyl disulfide and 3 to 5 parts of 2-methyl-2-butenal. The 2-methyl-2-butenal and / or acetaldehyde diethyl acetal are / is added into the garlic essence, so that the problem of high irritation of the garlic essence is greatly reduced.

A method for preparing a calcium-based metal-organic framework (Ca-MOF) for selectively adsorbing fishy off-odor compounds is disclosed. The method involves dissolving an organic acid and a calcium salt in an organic solvent, then transferring the solution to a high-pressure reactor for a high-temperature reaction. The solution is subsequently cooled to room temperature, followed by centrifuging, alcohol washing, and drying to yield Ca-MOF crystals. The resulting Ca-MOF demonstrates a selective and efficient adsorption of sulfur-containing compounds present in fishy off-odors, achieving up to a 97.3% removal efficiency for dimethyl trisulfide. With a fast adsorption rate, this Ca-MOF can be applied directly to food or used in an external sachet, making it suitable for diverse applications in food, medicine, and pesticides.

The invention belongs to the technical field of medical application, and particularly relates to application of dimethyl trisulfide or pharmaceutically acceptable salt thereof in preparation of drugs for preventing or treating microvascular diseases. The invention provides an application of dimethyl trisulfide or pharmaceutically acceptable salts thereof in preparation of drugs for preventing or treating microvascular diseases. Experiments prove that dimethyl trisulfide has a remarkable protective effect on microvascular diseases, can up-regulate the expression of a silence information regulatory factor 1 so as to up-regulate the expression of exosome 1, and can reduce the expression of a phosphorylation nuclear factor-kappa B P65 so as to repair the glycocalyx layer. Results show that dimethyl trisulfide has good effects of preventing and treating microvascular diseases.

The invention discloses a method for improving sensory cleanliness of Maotai-flavor baijiu in the technical field of baijiu brewing, the Maotai-flavor baijiu is treated by using kettle type distillation equipment, and the distillation time of foreign flavor components such as dimethyl disulfide, dimethyl trisulfide and 2, 3-butanedione is different from that of key aroma substance components by adjusting the feeding alcoholic strength and heating parameters, so that the taste of the maotai-flavor baijiu is improved, and the taste of the maotai-flavor baijiu is improved. The optimal distillate collection time is determined through experiments, and finally the Maotai-flavor liquor with improved cleanliness is obtained. The method is simple and convenient to operate, time-saving and labor-saving, and can be used for effectively removing the components with different flavors, namely dimethyl trisulfide, dimethyl disulfide and 2, 3-butanedione, in the Maotai-flavor liquor, so that the sensory cleanliness of the liquor body is improved.

The invention relates to the technical field of mold removal agents, in particular to a preparation method of a composite mold removal agent and the composite mold removal agent. The preparation method of the composite mildew removing agent comprises the following steps: S1, preparing modified montmorillonite; s2, brevibacillus laterosporus is cultured in a culture medium, brevibacillus laterosporus liquid is obtained after culture is completed, and then the obtained brevibacillus laterosporus liquid is prepared into dry powder; s3, mixing methyl thioglycolate, dimethyl trisulfide, 3-methylbutyl sulfate S-methyl ester and water, and then adding the dry powder to obtain a mixed solution; s4, mixing the mixed solution with the modified montmorillonite to obtain a composite mildew removing agent preparation; and S5, drying the composite mildew removing agent, and packaging. The composite mildew removing agent is applied to mildewed feed or corn starch, and an excellent mildew removing effect can be achieved 24 hours after mildew removing treatment.

The invention relates to an essence for pickled Chinese cabbages in old jars and a preparation method thereof. The essence is prepared from the following raw material components: acetic acid, allyl isothiocyanate, dimethyl trisulfide, 2-methylthiophene-3-ketone, hexanoic acid, diallyl disulfide, methyl salicylate, distilled ginger oil, ethyl caprylate, linalool, butyric acid, dimethyl sulfide, 2-methoxy-3-isobutylpyrazine, anethole, a pickled Chinese cabbage extract and caprylic capric triglyceride. The Laojin pickled Chinese cabbage essence prepared by the invention not only has the flavor characteristics of pickled Chinese cabbages, but also retains the taste of the pickled Chinese cabbages, and is full and pure in fragrance, high in simulation degree and stable in quality.

The present invention discloses a preparation method and application of a calcium-based metal-organic framework (Ca-MOF) for selectively adsorbing fishy smell substances, relating to the technical field of metal-organic framework materials; the preparation method comprises the following steps: dissolving an organic acid and a calcium salt in an organic solvent; transferring the fully dissolved solution to a high-pressure reactor for high-temperature reaction, and then cooling to room temperature; centrifuging, washing with alcohol, and drying the cooled solution to obtain Ca-MOF crystals. The calcium-based metal-organic framework prepared in the present invention has a significant selective adsorption effect on sulfur-containing compounds in fishy smell substances, and the adsorption rate for dimethyl trisulfide can reach 97.3%, with a fast adsorption rate. The calcium-based metal-organic framework has diverse application scenarios and can be directly added to foods or used as an external adsorption package. Therefore, the calcium-based metal-organic framework with selective adsorption can efficiently adsorb and remove sulfur-containing odor substances and can be used in multiple fields such as foods, medicines, and pesticides.

A super absorbent polymer of a polyacrylic acid (salt)-based super absorbent polymer, has a surface area of 45 mm−1 or more relative to an actual volume, and a deodorization rate of 40% or more according to the following Equation 1 for dimethyl disulfide (DMDS) or dimethyl trisulfide (DMTS): [Equation 1] Deodorization rate (%)=(1−Cs / Co)×100. In Equation 1, Cs is a peak area of an odor standard substance in a gas chromatography-mass spectrometry (GC-MS) graph for an odor standard substance solution that contacted the super absorbent polymer at 35° C. for 2 hours, and Co is a peak area of an odor standard substance in a gas chromatography-mass spectrometry graph for an odor standard substance solution that contacted a control group at 35° C. for 2 hours.