11 results about "Ethyl linolenate" patented technology

The invention belongs to the technical field of microcapsules, and particularly relates to an alpha-ethyl linolenate microcapsule and a preparation method thereof. The invention provides an alpha-ethyl linolenate microcapsule which comprises a core material and a wall material, and the core material comprises alpha-ethyl linolenate; the wall material comprises soybean protein isolate, maltodextrin and microcrystalline cellulose; the mass ratio of the soybean protein isolate to the maltodextrin to the microcrystalline cellulose is (3: 1)-(1.2: 1); and the mass ratio of the core material to the wall material is 1: (2-3). The wall material composed of the soybean protein isolate, the maltodextrin and the microcrystalline cellulose is more effective in the aspect of enhancing the interface structure, so that the wall material has a better protection effect on unsaturated fatty acid.

A reaction kettle acid adding device in ethyl linolenate production comprises a liquid inlet rigid pipe connected to the upper end of a reaction kettle, the liquid inlet rigid pipe is communicated with the interior of the reaction kettle, a flexible pipe is fixedly connected to the liquid inlet rigid pipe, the upper end of the flexible pipe is fixedly connected to a rigid liquid outlet pipe, the rigid liquid outlet pipe is fixedly connected to the bottom of a liquid adding hopper, and the liquid adding hopper is fixedly connected to the bottom of the liquid adding hopper. The flexible pipe penetrates through the screw water stop clamp, the screw water stop clamp is fixedly arranged, the screw water stop clamp comprises a screw hole plate, a screw is screwed in a screw hole of the screw hole plate, guide rods are fixedly connected to the positions, on the two sides of the screw, of the screw hole plate, the two ends of the movable clamping plate are arranged on the guide rods in a sliding and penetrating mode through holes, and the screw abuts against the movable clamping plate. The two ends of the fixed clamping plate are fixedly connected to the guide rods, and the flexible pipe passes through the space between the fixed clamping plate and the movable clamping plate. According to the acid adding device, the acid adding speed is controllable, and the consistency of the acid adding speeds of different batches is well guaranteed by adjusting the position of the solenoid.

The invention belongs to the technical field of food microorganisms, and particularly relates to application of a yeast strain QGXH1 in preparation of ethyl acetate, tectoridiol and ethyl linolenate, the yeast strain QGXH1 is preserved in China General Microbiological Culture Collection Center on January 29, 2024, the preservation number is CGMCC No. 29805, and the yeast strain QGXH1 is preserved in China General Microbiological Culture Collection Center on January 29805. The preservation address is Institute of Microbiology, Chinese Academy of Sciences, No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing; the saccharomyces cerevisiae is classified and named as Saccharomyces cerevisiae, and the saccharomyces cerevisiae is used as a culture medium of the saccharomyces cerevisiae. The contents of ethyl acetate, ethyl palmitate, ethyl caprate, linolenic acid and ethyl 9-hexadecanoate in the plum vinegar prepared by fermentation of the yeast strain QGXH1 are obviously increased, and in addition, when the plum vinegar is prepared by co-fermentation of the yeast strain QGXH1 and green tea, tectoridiol and ethyl linolenate are added in nutritional ingredients, so that the yield of the plum vinegar is increased. The aroma components and nutrient substances of the plum vinegar are greatly enriched.

The invention discloses a method for separating and purifying linolenic acid by using a composite membrane, and relates to the technical field of substance separation.The method comprises the steps that pretreated grease and ethyl alcohol serve as raw materials, and ethyl linolenate is prepared through an immobilized lipase catalytic esterification reaction; intercepting lipase and macromolecular impurities by using an ultrafiltration membrane; separating an oil phase from a water phase by adopting a modified PVDF (Polyvinylidene Fluoride) microfiltration membrane; ethyl linolenate and raw materials are separated based on polarity difference through a PDMS / TiO2 composite membrane; and removing residual ethanol by molecular distillation to obtain a high-purity ethyl linolenate product. PVP is added into the modified membrane, so that the pore diameter and the porosity of the membrane are increased, and the flux of the membrane is favorably improved; a proper amount of SDS is added into a membrane casting solution, so that the hydrophilicity of the surface of the membrane is improved, and the separation effect of the membrane on a water phase and an oil phase is improved.

A filtering device in ethyl linolenate production comprises a filtering tank, a filtering plate is installed in the filtering tank, the circumferential face of the filtering plate is fixedly connected with an end shaft at the interval of 180 degrees, the end shafts are rotationally connected to the wall of the filtering tank, the end shafts and the filtering tank are sealed, the circular filtering plate comprises an outer ring concentric with the filtering tank in the horizontal direction, and the outer ring is connected with the filtering tank in the horizontal direction. A plurality of filter screen supporting plates are fixedly connected to the outer ring, the filter screen is fixedly connected to the outer ring, a gap is formed between the outer ring and the inner wall of the filter tank, the outer circumferential face of the outer ring is in a groove shape, an annular inflation tire is arranged in the groove shape, a hole in the circumferential direction of the outer ring is formed in the inner end of the end shaft, and the inflation tire penetrates through the hole. An axial hole is formed in the end shaft penetrating through the wall of the filtering tank, a fixing piece is fixedly connected into the hole, an inflation pipe is connected to the inflation tire, a valve core is connected to the inflation pipe, and the end of the valve core penetrates out of the fixing piece and then is fixedly connected to the fixing piece. The filtering device is easy to turn over.

The invention discloses a metabonomics-based distinguishing method for feng-flavor baijiu in different years. According to the method, Fengxiang type baijiu in different years in metabonomics research is distinguished according to the ratio of the content of ethyl enanthate to the content of ethyl linolenate in baijiu, and the Baijiu with the ratio of ethyl enanthate to ethyl linolenate in a to-be-detected sample being 60 or above is the Fengxiang type baijiu in the high year; the white spirit with the ratio of the ethyl enanthate to the ethyl linolenate being less than 1 is the low-age feng-flavor white spirit. Compared with a method depending on sensory evaluation or a complex instrument, the method provided by the invention realizes rapid and objective year discrimination through a specific metabolite ratio. The method is simple to operate, has high sensitivity and specificity, is suitable for white spirit quality monitoring, year identification and market supervision, and can provide reference for research on feng-flavor white spirit metabonomics.

The invention provides a preparation method of high-content alpha-ethyl linolenate, which comprises the following steps: (1) ethyl ester preparation: weighing raw material oil and ethanol according to a certain proportion, preheating the raw material oil and ethanol in a water bath kettle, adding a catalyst, carrying out heat preservation and stirring reaction in an oil bath kettle, standing for layering, and filtering to obtain ethyl ester; discharging lower-layer glycerol to obtain upper-layer ethyl ester; (2) urea inclusion; (3) column chromatography: taking a chromatographic column, filling the chromatographic column with a filler, preparing ethyl ester with a certain concentration, filling the chromatographic column with the prepared ethyl ester, injecting a sample according to a fixed flow rate during filling, and injecting an eluent into the chromatographic column for elution to obtain further purified alpha-ethyl linolenate; and (4) molecular distillation. Urea inclusion is carried out in a proper proportion, conditions are mild, and extreme environmental conditions such as high temperature and high pressure are not needed. The price is relatively low, and reutilization can be realized. The used reagent has little pollution to the environment, and meanwhile, urea is a biodegradable substance and does not cause long-term influence on the environment.

This invention belongs to the field of food microbiology technology, specifically relating to the application of yeast strain QGXH1 in the preparation of ethyl acetate, iris glycol, and ethyl linolenate. The yeast strain QGXH1 was deposited on January 29, 2024, at the China General Microbiological Culture Collection Center (CGMCC), accession number CGMCC No. 29805; deposit address: Institute of Microbiology, Chinese Academy of Sciences, No. 3, Courtyard 1, Beichen West Road, Chaoyang District, Beijing; classification and nomenclature: *Saccharomyces cerevisiae*. Saccharomyces cerevisiae The plum vinegar prepared by fermentation with yeast strain QGXH1 showed a significant increase in the content of ethyl acetate, ethyl palmitate, ethyl decanoate, linolenic acid, and ethyl hexadecanoate. In addition, when yeast strain QGXH1 was co-fermented with green tea to prepare plum vinegar, the nutritional components increased with iris glycol and ethyl linolenic acid, which greatly enriched the aroma components and nutrients of the plum vinegar.

An estrosphere preparation comprising an ester phase and an aqueous phase characterised in that the ester phase comprises α-linolenic acid ethyl ester, or a mixture of α-linolenic acid ethyl ester with one or more components selected from the group comprising polyunsaturated fatty acids ethyl esters (PUFA ethyl esters) or triglycerides, ethanol, and emulsifier, in a weight ratio of between 2:0.5:1 and 8:2:1, respectively, and the aqueous phase comprises water with glycerol at a final concentration of 2.25% by weight, wherein the weight ratio of α-linolenic acid ethyl ester, or of the mixture of α-linolenic acid ethyl ester with one or more components to ethanol, emulsifier and water is between 2:0.5:1:45 and 8:2:1:45, respectively. A method for producing such an estrosphere preparation. Said preparation for use in the treatment of cancer and viral diseases.

The invention discloses a method for detecting the content of active ingredients in magnolia wufengensis volatile oil, and belongs to the field of quality control of traditional Chinese medicines. A gas chromatograph is adopted to be equipped with a hydrogen flame ionization detector (GC-FID), a chromatographic column is Agilent VF-17 ms, carrier gas is helium, and the flow velocity is 0.8 mL / min; temperature programming; and carrying out quantitative analysis by adopting an external standard method. The GC method for simultaneously determining the content of the five active ingredients (beta-elemene, ethyl palmitate, ethyl linoleate, ethyl linolenate and squalene) in the magnolia wufengensis volatile oil is established for the first time, the method is economical, accurate and good in repeatability, and scientific basis and technical support are provided for quality control and standardized evaluation of the magnolia wufengensis volatile oil.

The invention provides a method for preparing high-purity ethyl linolenate by combining supercritical synergistic plasma molecular sieve and ultrasonic crystallization, which comprises the following steps: (1) supercritical enzyme catalytic reaction: catalyzing ester exchange reaction between linseed oil and ethanol by using immobilized lipase in a supercritical COenvironment, glycerin by-products are removed in real time through the dynamic centrifugal separation module; (2) targeted adsorption of a plasma activated bimetallic molecular sieve: selectively adsorbing the alpha-ethyl linolenate in supercritical CO by adopting a nitrogen plasma activated palladium-silver bimetallic molecular sieve (Pd-Ag / SBA-15); and (3) purification: purifying the alpha-ethyl linolenate through a three-stage molecular distillation and ultrasonic-assisted urea inclusion combined technology, wherein the purity of the final product is greater than or equal to 98%. The method provided by the invention not only improves the enzyme catalysis efficiency, but also enables the reaction balance to move towards the positive reaction direction through immediate removal of glycerol.