10 results about "Ethyl vanillin" patented technology

The invention provides a preparation method of a copper complex containing ethyl vanillin, which is characterized by comprising the following steps: S1, dissolving ethyl vanillin and inorganic alkali in methanol, and stirring to obtain a mixed solution I; s2, soluble copper salt is taken and dissolved in methanol, and a mixed solution II is obtained; mixing the mixed solution I and the mixed solution II, and performing reflux reaction at 55-60 DEG C for 5-7 hours to obtain a reaction solution; and S3, filtering the reaction liquid, collecting filtrate, evaporating to obtain crystals, washing the crystals with water, and drying to obtain the product. The preparation process is simple, and the product has excellent biocompatibility and good oxidation resistance, and has huge potential in the aspect of treating inflammatory joint diseases.

The invention discloses vanillin alcohol ether and a preparation method thereof, and the preparation method comprises the following steps: (1) by taking vanillin or ethyl vanillin and hydrogen as reactants and alcohol or ethyl acetate (EA) as a solvent, preparing a reactant solution, adding a Raney nickel catalyst as a catalyst, and reacting at the temperature of 40-70 DEG C under the reaction hydrogen pressure of 2-3 MPa for 8-10 hours; and (2) by taking vanillin alcohol or ethyl vanillin alcohol and second alcohol as reactants and lewis acid (such as magnesium chloride, aluminum chloride, calcium chloride, ferric chloride, copper sulfate and other lewis acids) as a catalyst, reacting at 80-100 DEG C to obtain vanillin alcohol ethers, the preparation method disclosed by the invention is mild in reaction condition, few in by-products, green and environment-friendly, high in product yield and suitable for industrial production.

The present application belongs to the technical field of tobacco, and discloses a method for improving the conversion rate of ethyl vanillin-beta-D-glucoside in sidestream smoke. In the method, ethyl vanillin-beta-D-glucoside and a certain amount of intumescent flame retardant are mixed and then added to the combustion position of a cigarette. The method can significantly improve the conversion rate of ethyl vanillin-beta-D-glucoside in sidestream smoke into ethyl vanillin.

The invention belongs to the technical field of nutritional food, and particularly relates to vitamin A, D and E zinc-selenium composite nutritional powder for resisting oxidation and regulating the immune function. Comprising the following components: 4.0 to 4.6 g of retinyl acetate, 35.8 to 6.3 g of vitamin D, 380 to 420 g of zinc sulfate, 29 to 33 g of sodium selenite, 57 to 61 g of dl-alpha-tocopheryl acetate, 9300 to 9400 g of maltodextrin, 95 to 105 g of silicon dioxide, 8 to 12 g of stevioside, 18 to 22 g of ethyl vanillin and 18 to 22 g of citric acid. Through scientific proportioning of vitamin A, vitamin D3, vitamin E, zinc, selenium and other active components and matching of appropriate auxiliary materials, the multi-effect health-care food achieves multiple effects of enhancing immunity, promoting calcium absorption and bone health, protecting eyesight, resisting oxidation, delaying senescence and promoting growth and development, and meets health requirements of different crowds.

An improved process can be used for preparing vanillin (meth)acrylates and derivatives or structurally related compounds thereof in high purity, by reacting an alcohol with an activated (meth)acrylic acid derivative. Ethyl vanillin (meth)acrylate provides for improved room temperature crosslinking efficiency and is particularly suitable for paints / varnishes and coatings.

The invention discloses a method for simultaneously determining seven spices and essences in rice, which adopts a liquid chromatography-tandem mass spectrometry method, and comprises the following steps: 1) mixing a rice sample with an extracting agent, carrying out vortex, ultrasonic extraction and low-temperature high-speed centrifugation, passing the supernatant through a 0.2 mu m wwPTFE (polytetrafluoroethylene) microfiltration membrane, and loading the supernatant into a machine for determination, the extracting agent is a mixture of water and 0.1% formic acid methanol in a volume ratio of 3: 7; (2) separating by using a Bipheyl chromatographic column under the chromatographic condition, and carrying out gradient elution by using 0.1% formic acid water and 0.1% formic acid methanol as mobile phases; the mass spectrometry is detected in a positive ion scanning multi-reaction monitoring mode, and is quantified by an external standard method. According to the method, seven spices such as 2-acetylpyrazine, 2-acetylpyridine, ethyl maltol, vanillin, methyl vanillin, ethyl vanillin and coumarin which may be maliciously added in the rice can be simultaneously determined, and the seven spices are simultaneously determined by adopting the same detection means, so that the cost is saved, the efficiency is improved, and the method is suitable for large-scale popularization and application. The method has high separation degree and good accuracy and precision.

The application discloses coffee essence, atomized liquid and a preparation method and application thereof, and belongs to the technical field of electronic atomization products. The coffee essence comprises vanillin, ethyl vanillin, 2,3,5-trimethylpyrazine, propylene glycol and other components. By scientifically matching various coffee aroma components and using propylene glycol as a solvent, the compatibility of the coffee essence and the base material is improved, the stability of the coffee essence is improved, the real coffee roasting aroma is accurately restored, the real feeling and satisfaction of user experience are improved, the use requirements of the electronic atomization device are met, and the coffee essence does not contain caffeine and meets the use specifications.

The invention relates to ethyl vanillin grafted cigarette paper and application thereof.The ethyl vanillin grafted cigarette paper is prepared through a preparation method comprising the following steps that the surface of cigarette paper base paper is coated with a silane coupling agent solution, drying treatment is conducted, and a silane coupling agent pre-coating layer is formed; wherein the plant pulp for preparing the cigarette paper base paper contains more than 50% of hardwood pulp; and coating the silane coupling agent pre-coating layer with an ethyl vanillin solution, carrying out a reaction, and carrying out drying treatment so as to obtain the ethyl vanillin grafted cigarette paper. The innovative cigarette paper is developed, the problem of volatilization of fragrant substances is fundamentally solved, the shelf life is remarkably prolonged, and particularly unexpectedly, the physical strength, especially the tearing strength, of the paper can be effectively improved through the means. In addition, negative effects on ash wrapping performance and combustion performance which are crucial to traditional cigarettes are not generated while the effects are achieved, and excellent comprehensive performance is achieved.

The invention relates to the technical field of oral delivery of nicotine, in particular to a blueberry-flavor nicotine bag and a preparation method thereof. The blueberry-flavored nicotine bag provided by the invention comprises a granular base material obtained by wet granulation and a small bag for encapsulating the granular base material, the particle base material comprises nicotine salt, a filling agent, a bonding solution and blueberry solid essence; wherein the blueberry solid essence comprises an embedding body formed by cyclodextrin and a blueberry liquid essence base material, and ethyl vanillin glucoside. According to the blueberry nicotine bag and the preparation method thereof, the solid blueberry essence is prepared by cooperatively introducing stable precursor-aroma substances through an embedding technology, so that the prepared blueberry nicotine bag is high in discoloration resistance and high in flavor retention rate, and the shelf life and the optimal tasting period of the product are greatly prolonged.

The application provides a method for determining essence and flavor in oil, which comprises three main steps of sample pretreatment, purification and analysis and test, the influence of the presence of lipids and proteins in the oil on the extraction efficiency of the target essence and flavor is avoided by removing grease and impurities in the sample pretreatment stage; the determination method adopts a solid phase extraction-gas chromatography analysis method, the extract is purified through a solid phase extraction column and separated through a polar chromatographic column, has the advantages of small matrix interference and fast analysis speed, and through reasonable purification and purification path and analysis and test means, the detection sensitivity is improved, and the detection limit and the quantitative limit are reduced. The application can simultaneously determine vanillin, methyl vanillin, ethyl vanillin, ethyl maltol and 2,3,5-trimethylpyrazine, five kinds of essence and flavor in oil, realizes simple pretreatment operation, good purification effect and higher sensitivity quantitative detection, and provides technical support for oil quality evaluation and edible oil safety supervision.