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53 results about "Organic sulphur compound" patented technology

Method for preventing formation of heterocyclic amine in food

The invention relates to the technical field of food safety methods, in particular to a method for preventing formation of heterocyclic amine in food. In the pickling treatment, the movement of heterocyclic amine precursor substances to the surface of the meat in the heating process can be reduced through the good water-retaining property of the table salt, so that the formation of heterocyclic amine is reduced, the generation of IQ and MeIQ can be reduced through the organic sulfur compound added in the pickling process, so that the generation rate of heterocyclic amine is reduced, and in the Maillard reaction, the quality of the meat is improved. The caramelization reaction can be accelerated by the high-concentration sugar, so that the formation of heterocyclic amine is inhibited, and the inhibition rate of the generation of the heterocyclic amine in the food can be improved to a certain extent through the matching effect of the red wine and the grape seed extract; finally, the meat product is subjected to microwave pretreatment before cooking, so that the content of heterocyclic amine precursors (creatine, creatinine, amino acid and sugar), water and fat can be reduced, the remaining precursors cannot permeate to the surface of the meat product through the water to participate in the reaction, and the forming amount of heterocyclic amine is further reduced.
Owner:广西小研人生物科技有限公司 +1

Method for preparing catalytic gasoline alkylate desulphurization complex catalyst

The invention relates to a method for preparing a catalytic gasoline alkylate desulphurization complex catalyst. The catalyst developed by the method provided by the invention can be used for effectively removing a organic sulphur compound in gasoline. The technical scheme adopted by the invention is as follows: firstly adding an organic solvent into a container filled with absolute aluminium trichloride in the proportion that 1.5-4.0ml of the organic solvent is added into per g of absolute aluminium trichloride, and uniformly stirring; then introducing hydrogen chloride into the mixture, or adding one or two or three of dichloromethane, trichloromethane, tetrachloromethane and normal heptane, and reacting for 60-90 minutes at the temperature of 60-80 DEG C; and finally stopping stirring,wherein the reactants are divided into two phases, the upper phase is the organic solvent which can be recycled after being separated, the lower reactant is distilled at the temperature of 80-310 DEGC, and the residual product is the complex catalyst prepared by the method. The method provided by the invention has the advantages that raw material source is wide, reaction is carried out at normalpressure and lower temperature and is easy to implement, and the preparation method is applied to petroleum refining and chemical production.
Owner:SOUTHWEST PETROLEUM UNIV

High-sensitivity and high-precision analysis method suitable for detection of organic sulfur compounds in cigarette mainstream smoke

The invention relates to a high-sensitivity and high-precision analysis method suitable for detection of organic sulfur compounds in cigarette mainstream smoke; the method adopts synthesized ionic liquid dispersion liquid-liquid micro-extraction of the organic sulfur compounds in the smoke, the volume of an extraction liquid is small, the extraction efficiency is high, and the sensitivity of the method is greatly improved; a sulfur-containing analysis protective agent is adopted; on the basis of an on-line gas generator, a target object is protected in real time, and the problems of peak shape trailing, inaccurate integration, poor signal response precision and the like caused by adsorption of a chromatographic system are remarkably solved. Compared with a traditional method, the method has the advantages that the consumption volume of the selected ionic liquid is small, the extraction efficiency is high, and the ionic liquid can be reused and is more economical, green and environment-friendly; the analysis protective agent is generated on line in real time, the protection range is wide, the defect that a conventional protective agent only protects part of target objects is overcome, the molecular weight of the protective agent is small, the protective agent cannot be deposited at a liner tube, a chromatographic column and an ion source, and the maintenance cost of a detection instrument is remarkably reduced.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC
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