53 results about "Octanal" patented technology

The present invention provides a flavour composition which is a mixture of flavour materials, characterised in that the flavour composition comprises at least 8% by weight of the total weight of the flavour composition of ingredients selected from the following groups of flavour materials: (a) at least 0.5% by weight of the flavour composition of one or more of the following: a peppermint oil comprising 1-isopropylidene-4-methyl-2-cyclohexanone in an amount from 1% to 4% by weight, 5-methyl-2-(1-methylethyl)-1-cyclohexanone in an amount from 8% to 13% by weight and less than 0.5% by weight of eucalyptol; a spearmint oil comprising less than 70% by weight of carvone and at least 14% by weight of limonene; or mixtures thereof; and (b) at least 0.5% by weight of the flavour composition of two or more of the following: decanol, octanal, allyl hexanoate, anethole, aniseed rectified, basil oil, benzyl butyrate, camomile oil, cinnamic aldehyde, cis-3-hexenyl acetate, citral natural, citronella ceylon, ethyl heptanoate, eugenol, fennel sweet, geranyl acetate, ionone alpha, lime, orange flavour, para cresyl methyl ether, pinene alpha. These materials have been identified as capable of inhibiting the production of odoriferous volatile sulphur compounds by microorganisms present in the oral cavity, and so to possess hitherto unappreciated oral malodour reducing properties.

The invention relates to an adsorbing material for wastewater treatment. The adsorbing material comprises the following raw materials in parts by weight: 9-15 parts of aluminum sulfate, 3-8 parts of sodium carbonate, 5-9 parts of potassium hydroxide, 6-11 parts of graphite, 8-14 parts of wood fiber, 4-6 parts of porous expanded perlite, 2-10 parts of hollow glass beads, 3-5 parts of hydroxyethyl cellulose, 2-7 parts of soda lime, 5-8 parts of a terbium oxide catalyst, 3-6 parts of tri-isocyanurate, 4-8 parts of octanal, 3-7 parts of 1-hydroxyoctadecane and 1-4 parts of sodium diethyldithiocarbamate. The adsorbing material for wastewater treatment has the beneficial effects that the adsorbing material plays a good role in adsorbing suspend matter in water, also can well adsorb heavy metal ions to achieve the function of purifying water, and is low in cost.

The invention discloses a tomicus piniperda attractant and application thereof. The tomicus piniperda attractant is prepared from the following components of 0.2 to 0.8 part of alpha-pinene, 0.4 to 0.6 part of beta-pinene, 0.6 to 3 parts of trans-beta-ocimene, 0.4 to 2 parts of 1-octene-3-alcoho, 3 to 8 parts of cis-11-hexacadienal, 1 to 5 parts of n-octanal, and 30 to 70 parts of acetaldehyde. The invention also provides a use method of a dendroctonus armandi attractant; the attracting effect on dendroctonus armandi is obvious, and the dendroctonus armandi can be ecologically prevented and controlled. The tomicus piniperda attractant has the advantages that the environment-friendly effect is good, the cost is low, and the simplicity in use is realized.

The invention discloses and relates to a method for quickly detecting acraldehyde in Baijiu, and belongs to the technical field of analysis and detection of Baijiu. The method comprises the following steps of enabling pentafluoro benzylhydroxylamine and acraldehyde in Baijiu to react to generate oxime; accurately quantifying the acraldehyde in Baijiu by a headspace solid-phase microextraction and gas chromatography mass spectrometry coupling technique. The method is characterized in that d16-octanal labeled by isotope deuterium is used as an internal label, the feature ions of m / z 251 and m / z 243 are used for respectively quantifying the acraldehyde derivative and d16-octanal derivative, and the concentration of the acraldehyde derivative is the concentration of acraldehyde. The method has the advantages that the operation is simple, the detection is sensitive, the automation degree is high, the specificity is high, the detection method can be used for further detecting the acraldehyde in the Baijiu of different years and different flavors, and the safety of Baijiu is better controlled.

The invention relates to a dendrobium officinale flower fragrance composition, a preparation method and application thereof, and relates to the technical field of daily chemicals. According to the main technical scheme, the dendrobium officinale flower fragrance composition is prepared from a fragrance compound and a solvent auxiliary material, wherein the fragrance compound is prepared from 1-octylene-3-alcohol, hexanal, nonanal, phenylacetaldehyde, octanal and linalool, and in the dendrobium officinale flower fragrance composition, the concentration of the 1-octylene-3-alcohol is 9.9 mg / L to 12.4 mg / L, the concentration of the hexanal is 26.7 mg / L to 31.5 mg / L, the concentration of the nonanal is 3.8 mg / L to 4.2 mg / L, the concentration of the phenylacetaldehyde is 18.8 mg / L to 20.6 mg / L, the concentration of the octanal is 1.2 mg / L to 1.4 mg / L, and the concentration of the linalool is 7.2 mg / L to 8.4 mg / L. The invention is mainly used for providing and preparing the dendrobium officinale flower fragrance composition. The dendrobium officinale flower fragrance composition has the natural fragrance characteristic of dendrobium officinale flowers. The dendrobium officinale flower fragrance composition is used for preparing daily chemicals such as spices, essences, cosmetics, perfume, detergents and the like so as to endow the daily chemicals with the dendrobium officinale flower fragrance characteristic.

A mosquito attractant composition is described comprising heptanal, octanal, nonanal, (E)-2-octenal and (E)-2-decenal. More particularly a composition wherein the compounds are present in the following proportions: nonanal 1.00, octanal 0.32±0.16, heptanal 0.06±0.03, (E)-2-octenal 0.04±0.02 and (E)-2-decenal 0.13±0.065.

The invention relates o a preparation method of 3,7-dimethyl-3- acetylthio-6,7-epoxy-octanal. The preparation method comprises following steps: at room temperature, in dichloromethane solvent, 3,7-dimethyl-3- acetylthio-6-octenal and 3-chloroperbenzoic acid are stirred and reacted for 4 to 10h, after reaction, a sodium hydroxide aqueous solution is adopted to adjust the pH value of an obtained reaction solution to 7, ether is adopted for extraction, an obtained organic layer is subjected to drying and filtering, an obtained filtrate is subjected to condensation so as to obtain a 3,7-dimethyl-3- acetylthio-6,7-epoxy-octanal crud product, and silica gel column separation is adopted so as to obtain the 3,7-dimethyl-3- acetylthio-6,7-epoxy-octanal high in purity. Compared with the prior art, the preparation method possesses following advantages: the preparation process is simple; operation is convenient; yield is high; the purity of finished product 3,7-dimethyl-3- acetylthio-6,7-epoxy-octanal is high; the production cost is relatively low; and the preparation method is suitable for industrialized production.

The invention discloses a method for rapidly distinguishing different varieties of rice based on aldehyde compounds, which is characterized by comprising the following steps: collecting aroma components of rice in different regions by adopting headspace solid-phase microextraction; collecting data in aroma components of rice by adopting a gas chromatograph-mass spectrometer, and screening aldehydes; the result of the volatility analysis being provided in chromatographic peak area counting; using orthogonal partial least squares discriminant analysis OPLS-DA modeling to compare rice differences in different regions. and determining the content of aldehyde substances such as hexanal, heptanal, 3-methyl-butyraldehyde, 5-methyl-hexanal, n-octanal, 2-heptenal, nonanal, trans-2-octenal, benzaldehyde, trans-2-nonenal, trans-2-decenal, lauric aldehyde, trans-2-undecenal and the like as a recognition standard. The method disclosed by the invention is small in data volume and high in distinction degree. The method can quickly and accurately identify the rice producing area, and is beneficial to further processing and utilizing rice and developing related products.

The invention belongs to the technical field of preparation of six-membered glyceryl acetal, and in particular discloses a preparation method of the six-membered glyceryl acetal. The method comprisesthe following steps: step 1, preparing the following raw materials, in parts by molar: 10-13 parts of glycerin, 4-6 parts of n-octanal, and 5-7 parts of a catalyst; step 2, simultaneously adding the glycerin, the n-octanal, lauraldehyde and the catalyst into a reaction kettle according to the above molar by parts, performing a reaction for 5-6 h at reaction temperature of 45-55 DEG C to obtain a mixture of cis six-membered cyclic glyceryl acetal, cis five-membered cyclic glyceryl acetal and trans five-membered cyclic glyceryl acetal; and step 3, performing separation on the cis six-membered cyclic glyceryl acetal, trans six-membered cyclic glyceryl acetal, the cis five-membered cyclic glyceryl acetal and the trans five-membered cyclic glyceryl acetal by using a rectification column. According to the method provided by the invention, the six-membered cyclic glyceryl acetal and the derivatives of the six-membered cyclic glyceryl acetal prepared by the method are applied in the field of decomposable surfactants and degradable bio-based lubricating oil, the yield can be up to 98.8%, and the method is suitable for promotion and use.

The invention relates to a graphene-based composite microsphere for cigarettes, a preparation method thereof and an application in cigarettes, belonging to the technical field of cigarette additives. Graphene oxide is reduced with a natural reducing agent, and the obtained reduced graphene oxide is reacted with fruity-flavored aldehyde compounds and dopamine hydrochloride, and then extracted by Soxhlet to obtain a graphene-based composite material with molecular recognition function. Finally, various The graphene-based composite material prepared from the aldehyde compound is compounded into graphene-based composite microspheres for cigarettes. The microspheres can selectively adsorb isovaleraldehyde, octanal, nonanal, decanal and melonal from complex natural flavors and fragrances, and the adsorption objects and capacity are controllable, and the adsorption intermolecular force of the microspheres is mainly non-common Valence bond strength, good thermal conductivity, and rapid desorption during use. When the microsphere is made into an additive and added to the filter tip, it can not only provide fruity aroma, enhance the aroma of cigarettes, improve smoking comfort, but also prevent thermal collapse of the structure.