12 results about "Isobutyl acetate" patented technology

The invention discloses breeding of a pichia kluyverovii strain with high yield of beta-lyase and application of the pichia kluyverovii strain in beer fermentation, and belongs to the technical field of bioengineering. The pichia kluyveri B21 is preserved in the China General Microbiological Culture Collection Center, and the preservation number of the pichia kluyveri B21 is CGMCC (China General Microbiological Culture Collection Center) No.34028. The strain can produce high-yield beta-lyase, and the beta-lyase is catalyzed to produce volatile mercaptan and endows beer with fruity flavor. The contents of ethyl acetate, isoamyl acetate, isobutyl acetate, ethyl nonanoate, ethyl caprate, phenethyl acetate, linalool and nerol generated by the pichia kluyveri B21 in a hops simulated culture medium are relatively high, and the volatile substances can increase the fruit fragrance and flower fragrance of beer and enrich the flavor of the beer. The pichia kluyveri B21 is expected to be added into production of other food and beverages so as to enrich flavor substance components.

SOLVENT COMPOSITIONS The present invention relates to a solvent composition for solvent-based paints or other coatings characterized in that it comprises a combination of dimethyl glutarate and at least one other compound selected from isobutyl acetate, ethyl lactate, dimethyl 2-methylglutarate, 2-methyltetrahydrofuran, ethyl acetate, cyclopentyl methyl ether, dithoxymethane, dimethyl carbonate, dimethyl succinate, benzyl alcohol, dimethyl adipate, and glyceryl triacetate. Fig. 1

The utility model discloses an isobornyl acetate fractionating device which comprises a feeding pipe, a clarification separation tank, a first discharging pipe, a head tank, a second discharging pipe and a fractionating tower, the feeding pipe is connected with the bottom of the clarification separation tank, and a first filter screen, a second filter screen and sodium carbonate solid particles are arranged in the clarification separation tank. The first filter screen and the second filter screen are vertically arranged in the clarification separation tank at an interval, so that a deacidification cavity is formed between the first filter screen and the second filter screen, the sodium carbonate solid particles are filled in the deacidification cavity, one end of the first discharge pipe is connected with the top of the clarification separation tank, and the other end of the first discharge pipe is connected with the bottom of the clarification separation tank. The other end of the first discharging pipe is connected with the head tank, and a feeding pump is arranged on the first discharging pipe. The technical scheme is used for solving the problem that the acidity of the existing isobornyl acetate fractionation product exceeds the standard.

The present application relates to the field of microbial technology, and particularly to a Pichia kudriavzevii (Pichia kudriavzevii) strain ZB448 and application thereof. Pichia kudriavzevi The Pichia kudriavzevii strain ZB448 provided by the present application has rich ester aroma, especially high content of phenylacetic acid ethyl ester, phenylacetic acid ethyl ester, ethyl acetate and isobutyl acetate, and significantly reduced content of ethyl octanoate; the aroma characteristics generated are strong fruit aroma and honey aroma and weak wine aroma, and the overall aroma is more pleasant and coordinated. The strain is used for fermentation of wheat protein seasoning juice, can effectively increase the content of ester aroma components in the product, weaken the adverse odor of bran koji, increase the content of umami amino acids, so that the product achieves the effect of rich ester aroma, rich aroma, and improved umami, and significantly improves the overall flavor and quality of the product.

The application discloses a high-yield beta-lyase Pichia kluyveri strain breeding and application in beer fermentation, belonging to the field of bioengineering technology. Pichia kluyveri The Pichia kluyveri (Pichia kluyveri) B21 is preserved in the China General Microbiological Culture Collection Center, and the preservation number is CGMCC No. 34028. The strain can produce high-yield beta-lyase, the enzyme catalyzes the production of volatile mercaptans, and can impart beer fruity aroma. The Pichia kluyveri B21 produces high content of ethyl acetate, isoamyl acetate, isobutyl acetate, ethyl nonanoate, ethyl decanoate, phenethyl acetate, linalool and nerol in hop simulation culture medium, and these volatile substances can increase beer fruity aroma, floral aroma and rich beer flavor. The Pichia kluyveri B21 is expected to be added to the production of other food and beverage to enrich flavor substance components.

The invention relates to the technical field of microorganisms, in particular to pichia kudriavzevii ZB448 and application of the pichia kudriavzevii ZB448. The pichia kudriavzevii ZB448 strain provided by the invention is rich in produced ester fragrance, especially the content of ethyl phenylacetate, phenethyl acetate, ethyl acetate, isobutyl acetate and other substances is relatively high, the content of ethyl caprylate is remarkably reduced, the produced fragrance has the characteristics of strong fruit fragrance and honey fragrance and weak wine fragrance, and the whole fragrance is more pleasant and harmonious when smelled. The strain is used for fermentation of wheat protein sauce, can effectively improve the content of ester aroma components in a product, weaken bad smells such as mouldy bran taste and increase the content of flavor amino acids, so that the product achieves the effects of being rich in ester aroma, rich in aroma and improved in flavor, and the overall flavor and quality of the product are remarkably improved.

The present application belongs to the field of gasoline additive, and particularly relates to an environment-friendly gasoline antiknock agent and a preparation method thereof. The antiknock agent comprises two newly designed modified compounds: 3,5-di-tert-butyl phenyl carborane carboxylate and 2-(dicyclohexyl phosphino)-1,2-oxaborinin-4-carboxylic acid iso-octyl ester. In the preparation, a cosolvent is first added into a reactor, and then the two modified compounds, polyisobutylene amine, isobutyl acetate and dimethyl malonate are sequentially added under an inert atmosphere. After mixing by continuous stirring, the temperature is raised, an antioxidant is added, and then stirring is continued. Finally, the product is obtained by cooling and filtering. The two modified compounds are prepared by condensation reaction of carborane carboxylic acid and steric phenol, esterification of oxaborinin carboxylic acid and iso-octanol, and then phosphination reaction. The antiknock agent does not contain metal elements, has biodegradable characteristics, can significantly improve the octane number of gasoline and reduce engine deposits and harmful gas emissions, and meets the green environmental protection requirements.

This invention provides a continuous synthesis method for cyclopentadiene trimer, comprising the following steps: mixing dicyclopentadiene, an organic solvent, and a Lewis acid catalyst, and then feeding the mixture into a tubular reactor for reaction, followed by sequential atmospheric distillation and vacuum distillation to obtain the cyclopentadiene trimer; the organic solvent is one or more selected from cyclohexane, n-heptane, dichloromethane, benzene, toluene, xylene, ethylbenzene, propenzene, o-dichlorobenzene, ethyl acetate, isobutyl acetate, and acetonitrile; the Lewis acid catalyst is one or more selected from aluminum trichloride, ferric chloride, boron trifluoride diethyl ether, methyl aluminum dichloride, and zinc chloride. This invention, by selecting appropriate solvents and Lewis acids, enables the reaction to occur with higher selectivity and reduces side reactions. Subsequent purification by vacuum distillation can reduce the decomposition of TCPD and the formation of other byproducts during distillation.

The invention belongs to the technical field of green prevention and control of injurious insects, and particularly relates to bait for preventing and controlling tobacco field capsella ciliata injurious insects and a preparation method and application of the bait. The bait is formed by mixing basic bait and a special attractant according to the mass ratio of (150-450): 1. The basic bait comprises the following components in parts by mass: 20-30 parts of white sugar, 40-60 parts of white vinegar, 20-30 parts of white spirit, 3-5 parts of agar, 4-6 parts of sodium alginate, 30-50 parts of peeled bananas and 150-280 parts of water; the special attractant comprises the following components in parts by mass: 3 parts of phenylacetaldehyde, 1 part of geraniol and 1 part of isobutyl acetate. The bait provided by the invention can be used for remarkably trapping, killing and controlling the insect pests in the tobacco field and reducing the population density of the insect pests. The bait formula is green and environment-friendly, can be effectively degraded into micromolecular organic matters or inorganic matters in the environment, is safe to the environment, and meets the basic requirements of green plant protection.

The invention belongs to the field of gasoline additives, and particularly relates to an environment-friendly gasoline antiknock and a preparation method thereof, the antiknock comprises two newly designed modified compounds: 3, 5-di-tert-butyl phenyl carborane carboxylic ester and 2-(dicyclohexylphosphino)-1, 2-oxaborin-4-carboxylic acid isooctyl ester. The preparation method comprises the following steps: adding the cosolvent into a reactor, sequentially adding the two modified compounds, the polyisobutene amine, the isobutyl acetate and the dimethyl malonate in an inert atmosphere, continuously stirring and mixing, heating, adding the antioxidant, continuously stirring, and finally cooling and filtering to obtain a finished product. The two modified compounds are prepared through condensation reaction of carborane carboxylic acid and sterically hindered phenol, esterification of borane carboxylic acid and isooctanol and phosphination reaction respectively. The antiknock agent disclosed by the invention does not contain metal elements, has the characteristic of biodegradability, can remarkably improve the octane number of gasoline and reduce engine sediments and harmful gas emission, and meets the green and environment-friendly requirements.

The invention belongs to the technical field of microorganisms, and particularly relates to lactobacillus mucilaginosus and application thereof in enhanced fermentation of soybean-flavor liquor. Two kinds of fermentation lactobacillus mucus Q7 and Y8 are screened out through ethanol and acid tolerance, the lactic acid production capacity is better, the pH value of fermentation mash is obviously reduced by exogenously adding the strains Q7 and Y8, the pH value basically tends to be stable within 3-15 days of fermentation, and the content of total acid is obviously increased. The strain Y8 is used for strengthening fermentation of soybean-flavor liquor, and under the condition that liquor production is not affected, the ethyl lactate content of the strain Y8 is increased by 675%, and the ethyl acetate content of the strain Y8 is increased by 694%. According to the present invention, the fermentation of the bacterial strain Y8 reinforced soybean-flavor type Baijiu is subjected to process optimization, the isobutyl acetate is the special flavor substance after the reinforced fermentation, the ethyl acetate content is increased by 3.4 times, the ethyl lactate content is increased by 3.3 times, the characteristic higher alcohol content is significantly reduced, the acetaldehyde content and the ketone content are respectively reduced, and the quality of the soybean-flavor type Baijiu is improved.

An antistatic release film, comprising a substrate layer, an antistatic coating, and a release agent coating. The antistatic coating is located between the release agent coating and the substrate layer; the antistatic coating is obtained by drying a coating liquid; and the coating liquid is composed of the following components in parts by weight: 100 parts of polyurethane resin, 40-60 parts of polyvinyl alcohol, 2-4 parts of sodium octyl sulfate, 1-3 parts of N-ethyl-N—(3-sulfopropyl)-3-methylaniline sodium salt, 8-12 parts of dibutyl sebacate, 40-60 parts of n-butanol, 20-30 parts of isobutyl acetate, 0.8-1.5 parts of hydroxyethyl cellulose, 0.3-0.8 part pf 3-acetylbenzoic acid, 0.2-0.8 part of triethylenetetramine, 0.5-1.2 parts of a silane coupling agent, 0.5-1 part of an antioxidant, and 0.6-2 parts of a leveling agent. The antistatic release film enables the surface resistance of the antistatic coating in the antistatic release film to be almost unchanged after 200 days, thereby improving the performance reliability of the antistatic release film.