12 results about "Dimethyl trisulfide" patented technology

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 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.

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.

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.

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.

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.

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.