67 results about "Hexaldehyde" patented technology

The invention relates to a pulping method. The method comprises a coarse crushing stage, a heating and beany flavor generating stage, fine crushing stage and cooking stage, wherein in the coarse crushing stage, the liquid temperature T1 is less than or equal to 70 DEG C; preferably, a dipping stage is set before the coarse crushing stage, and the weight ratio X of the water amount to dry beans in the dipping stage is more than or equal to 2.5; preferably, the heating and beany flavor generating stage comprises a first heating stage and a second heating stage, and the liquid temperature in the first heating stage slowly rises to 75 DEG C; by setting the coarse crushing stage and controlling the liquid temperature in the coarse crushing stage to be lower than 70 DEG C, proper reaction temperature is provided for lipoxidase and unsaturated fatty acid which are released to the pulp, so that hexaldehyde is generated as much as possible and the soybean milk contains rich beany flavor; and by setting the dipping stage before the coarse crushing stage, the pulping materials can be easily crushed.

The invention discloses a gastric cancer VOC marker in saliva and its application in the preparation of gastric cancer diagnostic reagents. The marker refers to a combination of multiple or all of the following volatile organic compounds: acetaldehyde, 2-methylbutanal, Isopropanol, hexanal, n-butanol, cineole, nonanal, menthone, 2-ethylhexanol, menthol, anethole, dodecyl alcohol; The content of the gastric cancer VOC markers is used to diagnose gastric cancer. The invention provides a variety of volatile organic compounds in saliva as markers for the diagnosis of gastric cancer, and has broad application prospects in the early screening and diagnosis of gastric cancer.

Provided is an agent for suppressing the odors of polysulfide compounds. This agent for suppressing the odors of polysulfide compounds represented by formula (I) contains, as an active ingredient, atleast one selected from the group consisting of butyl 2-methylbutanoate, [alpha]-terpinene, dipentene, cis-4-heptenal, 1,4-cineol, trimethylhexyl aldehyde and (+)-limonene oxide. Formula (I): R1-[S]n-R2 (in the formula, R1 and R2 may be the same or different and each denotes a linear-chain or branched-chain alkyl or alkenyl group having 1-6 carbon atoms, and n denotes an integer between 2 and 5 inclusive).

The invention relates to a clean production method of 2,3-octanedione, which comprises the steps of preparing a composite catalyst, preparing a Fe3+-Fe2+ redox system, preparing a product from raw materials acetaldehyde and n-hexanal, and the like. The 2,3-octanedione produced by the method has a purity of more than 98 percent, pure aroma, mild production conditions, environmental friendliness, suitability for industrialized production, and good economic benefits.

The invention discloses a novel integrated solid acid catalyst with a carbon-based structure. The novel integrated solid acid catalyst is a sulfonating carbon nano tube (CNT-SO3H@) stainless steel material and is prepared by using the stainless steel material as a support material, growing a carbon nano tube on the surface of the support material, vulcanizing through polysulfide and oxidizing. The invention simultaneously discloses a preparation method of the novel catalyst and an application in preparation of biodiesel by means of catalytic distillation. The loss of an acid position of the solid acid catalyst with the carbon-based structure is reduced; because of high heat stability and structure stability, the catalyst is easily made into various shapes and is filled into a catalytic distillation tower to be used. An original element having functions of catalyzing and separating is used for coupling a reaction process with a separation process, and because of the process, the complicated processes of pre-esterification, purification and subsequent separation are avoided; meanwhile, a glycerinum product which is used for catalyzing waste oil and methyl alcohol ester to perform exchange reaction is converted into products of glyceraldehydes, glyceric acid, hexanal dimethyl acetal, acraldehyde dimethyl acetal and the like, so that the reaction is greatly intensified; finally, a biodiesel product with high purity can be directly obtained on the top of the tower and at the bottom of the tower.