41 results about "Heptanal" patented technology

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.

Provided an agent for suppressing an odor of a polysulfide compound. This agent for suppressing an odor of a polysulfide compound comprises, as an active ingredient, at least one selected from the group consisting, butyl 2-methylbutanoate, α-terpinene, dipentene, cis-4-heptenal, 1,4-cineol, trimethylhexyl aldehyde, and (+)-limonene oxide, wherein the polysulfide compound is represented by the following formula (I): R1—[S]n—R2 (I) (in the formula, R1 and R2 are the same or different, and each denote a linear-chain or branched-chain alkyl or alkenyl group having 1 to 6 carbon atoms, and n denotes an integer of 2 to 5).

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 discloses 2,6-dimethyl-6-methoxy heptanol series derivatives and a preparation method thereof. A structural formula of the 2,6-dimethyl-6-methoxy heptanol series derivatives is shown in a figure (shown in the specification), wherein R is ethyl, propyl, isopropyl, butyl, isobutyl, isoamyl, cyclopentyl, hexyl, cyclohexyl or allyl. The preparation method is shown as follows: methyl heptenone is used as a raw material, the methyl heptenone reacts with methanol under the catalysis of concentrated sulfuric acid to obtain 6-methyl-6-methoxy-2-heptanone, epoxy carboxylate is obtained by a condensation reaction of the 6-methyl-6-methoxy-2-heptanone and ethyl chloroacetate under the effects of a strong alkali, then 2,6-dimethyl-6-methoxy heptaldehyde is obtained by saponification and an acidifying decarboxylation reaction, the 2,6-dimethyl-6-methoxy heptanol series derivatives are obtained by a series of addition reactions of the 2,6-dimethyl-6-methoxy heptaldehyde and a bromoalkane Grignard reagent, and the 2,6-dimethyl-6-methoxy heptanol series derivatives have different fragrances and are new perfume compounds by identification.

The invention discloses a formulated purple potato essence, which comprises the following raw materials in parts by weight: 0.01-2 parts of isobutyraldehyde, 0.01-2 parts of isovaleraldehyde, 0.01-2 parts of acetic acid, 0.1-5 parts of isoamyl alcohol, 0.05-2 parts of hexanal, 0.01-5 parts of 2-heptanone, 0.01-5 parts of heptanal, 0.01-0.5 parts of 4-ethylphenol, 0.01-5 parts of methyl hexanoate, 0.01-5 parts of benzaldehyde, 0.01-5 parts of acid, 0.01-5 parts of 2-octanone, 0.01-5 parts of ethyl caproate, 0.01-5 parts of ethyl caprylate, 0.005-2 parts of 2-undecanone, etc., and auxiliary materials. The essence provided by the invention has the characteristic flavor of roasted purple potatoes, and can continuously provide the unique sensory flavor of purple potatoes when added to the heat-processed products of purple potatoes.

The invention discloses a complex enzyme preparation. The active ingredients of the complex enzyme preparation comprise protease, Halomonas urumqiensis and actinomucor elegans. The complex enzyme preparation is applied to fish sauce processing, produced fish sauce has pleasant mushroom fragrance, and the fishy smell is remarkably reduced. The Halomonas urumqiensis and the actinomucor elegans are combined for use, have the effects of reducing the content of heptanal metabolites and increasing 1-octen-3-ol metabolites and achieve synergistic interaction.

The invention discloses a liquid medicine for treating haemorrhoids and an application method thereof, which are applied to the technical field of medical treatment. The liquid medicine comprises thefollowing components in percentage by mass: 56.8%-85.9% of a hawthorn seed liquid, 8.5%-20% of acetic acid, 5.2%-19.8% of heptanal, 0.4%-1.9% of phenol and 0-1.5% of smell-removing essence. The liquidmedicine realizes an effective hemorrhoid treatment effect through the interaction of the components, and meanwhile, the smell of the liquid medicine is removed or improved in an auxiliary manner byutilizing the smell-removing essence, so that the liquid medicine is more easily accepted by a user, and the use somatosensory feeling is improved. The components of the liquid medicine are simple, sothat sensitization sources and medicine irritation are reduced, the medication safety is guaranteed, and the medication effect is guaranteed. In addition, the application method is simple, a patientcan go home to operate by himself / herself according to medication guidance of professional medical staff, the medication effect and the operation flexibility are guaranteed, meanwhile, embarrassed conditions of the patient are reduced, and the patient acceptance and the medication stability are guaranteed.

The invention relates to a device and process for cracking and preparing methyl undecylenate by using methyl ricinoleate as a raw material. The device includes: a feed pump, a raw material preheater, a microwave catalytic reactor, a microwave generator, a temperature Control instrument and infrared probe, condenser, product tank and discharge pump. The feed pump is connected with a preheater, the raw material preheater is connected with the inlet of the microwave catalytic reactor, the outlet of the microwave catalytic reactor is connected with a condenser, the condenser is connected with the upper port of the product tank, and the lower port of the product tank is connected with a discharge Pump. The microwave catalytic reactor is placed in a microwave generator, and the microwave generator is connected with a temperature controller and an infrared probe. The specific steps are: using high-purity ricinoleic acid methyl ester obtained by transesterification and rectification as raw material, preparing undecylenic acid methyl ester and heptanal through a microwave cracking reaction device, and then separating and purifying to obtain undecylenic acid methyl ester. The beneficial effect of the invention is that the microwave can heat evenly, save electricity compared with conventional heating, the device has continuous operability, and is suitable for industrialized production.

The invention relates to lactobacillus paracasei subsp.paracasei RP38. A strain has been preserved in the China Center for Type Culture Collection at May 5, 2019, and the preservation number is CCTCCNO:M2019322; the Lactobacillus paracasei subsp.paracasei RP38 has the following characteristics that (1) volatile flavor substances can be generated in the environment lacking a nitrogen source through sugar-charcoal-source metabolism, the lactobacillus paracasei subsp.paracasei RP38 adapts to the physical property of raw materials such as grapes and tremella fuciformis and longan composite juice,the fermentation aroma generated by metabolism is strong and is coordinated with the raw material aroma, and the lactobacillus paracasei subsp.paracasei RP38 is an ideal fermentation agent for lacticacid fermentation fruit juice products; (2) the lactobacillus paracasei subsp.paracasei RP38 can be applied to biological fishy smell elimination treatment of laminaria japonica products, fishy substances such as 1,3-octadiene, E,Z-3-ethylidenecyclohexene, n-nonyl alcohol, n-heptaldehyde and iodooctane are biologically transformed to be obviously reduced, and secondary metabolites, such as beta-phenethyl alcohol, peach aldehyde, ethyl myristate, lauraldehyde and E-2-nonylene-1-alcohol, with good flavors such as fruital are generated; and (3) the lactobacillus paracasei subsp.paracasei RP38 has the characteristic of strong resistance, for example, the lactobacillus paracasei subsp.paracasei RP38 can tolerate high-osmotic-pressure environmental stress with the pH of peracid being 2.0 and the glucose concentration being 30%.

The invention discloses HPPI-TOFMS (Hydrophile Peroxidase-Time of Flight Mass Spectrometry) expiratory gas marker screening for early lung cancer diagnosis and application thereof. The invention provides an application of 16 volatile organic compounds as lung cancer expiration biomarkers in development of products for diagnosis or auxiliary diagnosis of lung cancer. The 16 volatile organic compounds are acetaldehyde, 2-hydroxyacetaldehyde, isoprene, valeraldehyde, butyric acid, methylbenzene, 2, 5-dimethylfuran, cyclohexanone, hexanal, heptanal, acetophenone, propyl cyclohexane, octanal, nonanal, capraldehyde and 2, 2-dimethyl decane. The inventor of the invention determines 16 exhalation biomarkers of lung cancer by using HPPI-TOFMS for perioperative period exhalation omics detection, the combination of the 16 exhalation biomarkers can distinguish lung cancer patients from healthy people, and the 16 exhalation biomarkers can be used for clinical practice to optimize lung cancer screening schemes.

The invention belongs to the technical field of spices, and specifically relates to a preparation method and application of a solid condensation catalyst. Modification is carried out to prepare a solid condensation catalyst; the solid condensation catalyst of the present invention is used to catalyze the reaction of benzaldehyde with n-heptanal or n-octyl aldehyde to obtain α-pentyl cinnamaldehyde or α-hexyl cinnamaldehyde. The solid condensation catalyst of the present invention has a high conversion rate of catalyzed condensation reaction, the conversion rate of n-heptanal and n-octylaldehyde can reach 99%, is easy to separate, has high product purity, high selectivity, and α-pentyl cinnamaldehyde and α-hexyl cinnamaldehyde The condensation selectivity can reach more than 98%, and the ratio of E-type isomer to Z-type isomer can reach 97:3-99:1.

The invention provides an exhaled gas VOC (volatile organic compound) marker capable of diagnosing or assisting in diagnosing breast cancer and a breast cancer diagnosis or assisting diagnosis detection system based on the VOC marker. The VOC marker is any one or a combination of more of propionaldehyde, n-butyraldehyde, n-valeraldehyde, n-hexanal, n-heptanal, n-octanal, n-nonanal and n-capraldehyde. Detection is carried out based on the VOC marker, high detection sensitivity and specificity are achieved, and a new means is provided for diagnosis and screening of breast cancer.

The invention discloses a phthorimaea operculella zell attractant comprising the following components in parts by volume: 8-10 parts of alcohol compound, 0.5-1.5 parts of ester compound, 2-3 parts of aldehyde compound, 1-3 parts of terpene compound and 0.1-0.5 part of other compound, wherein the alcohol compound is any one of 1,8-eucalyptol and palustrol; the ester compound is any one of methyl jasmonate, anti-4, cis-7-C13 diene acetate and anti-4, cis-7, 10-C13 triene acetate; the aldehyde compound is any one of heptaldehyde, octyl aldehyde and nonaldehyde; the terpene compound is any one of limonene, phellandrene, terpinene, caryophyllene, pinene, elemene, ocimene, germacrene, farnesene and isolongifolene; and the other compound is any one of nicotine, solanone, norsolandione and para-cymene. The attractant is environment-friendly, does not injure natural enemies of pests and has remarkable attracting effect on phthorimaea operculella zell adults.

The invention discloses an active composition based on alpha-pinene and durene. The active composition is prepared from the following components in parts by weight: 20 to 70 parts of alpha-pinene, 20 to 60 parts of durene and 5 to 35 parts of heptanal. The invention further discloses a chilo suppressalis attractant prepared from the active composition and a non-volatile organic solvent and a chilo suppressalis lure which can package the chilo suppressalis attractant in a mating disruption device. The active composition disclosed by the invention can directly lure female moths and male moths of chilo suppressalis, has a higher control efficiency to the chilo suppressalis than a sex attractant, can be applied to mass trapping and killing, can remarkably reduce the number of adult chilo suppressalis, can reduce a descendant pollution density and can be applied to predicting the chilo suppressalis; the number of trapped chilo suppressalis can accurately predict chilo suppressalis population occurrence dynamic.