50 results about "Long chain triglyceride" patented technology

Drug formulations having emulsifying agents and both medium and long chain triglycerides are described. In preferred embodiments, the long chain triglycerides negate or lessen deleterious central nervous system effects that are caused by medium chain triglycerides.

The present invention relates to a process for controlling the fatty acid chain composition of triglycerides wherein a feed stream comprises a mixture of triglycerides containing at least one long chain. Said mixture is substantially free of trishort chain triglycerides and it is treated in at least two fractionation steps to fractionate between long chain triglycerides at temperatures above 200° C. and pressures between 0.01 and 10 Pa, wherein one of said steps fractionates between trilong chain triglycerides and mono- and dilong chain triglycerides and the other one of said steps fractionates between monolong chain triglycerides and dilong chain triglycerides. The process can be used for the providing of target triglycerides having a controlled fatty acid chain distribution.

The invention provides a structural type triglyceride rich in medium-chain fatty acid and a preparation method thereof. The provided triglyceride is prepared from medium-chain fatty acid with a carbon number of 8-12, palmitic acid, glycerin, and long-chain unsaturated fatty acid/fatty acid ester through catalytic reactions. In the provided triglyceride, medium-chain fatty acid accounts for 11 to 40 wt% of total fatty acid; Sn-2 position saturated fatty acid accounts for 52 to 80 wt% of total saturated fatty acid; Sn-1,3 position unsaturated fatty acid accounts for 80 to 95 wt% of total unsaturated fatty acid, the content of Sn-USU type triglyceride is 40 to 80%, and the content of triglyceride palmitate is 3 to 8%. The provided triglyceride has the characteristics of medium-chain triglyceride and long-chain triglyceride; compared with the common medium/long-chain fatty acid edible oil, the provided triglyceride has richer structures, according to the product characteristics, and the provided triglyceride can be used as a food nutrient supplement and added in different food formulas. The preparation method has the characteristics of high production efficiency, low energy consumption, mild reaction conditions, little using amount of enzyme, more precise procedure, and effectively-reduced cost.

The invention discloses a method for enzymatically synthesizing medium-long chain structure triglyceride. Long-chain triglyceride and medium-chain triglyceride are mixed according to a certain mass ratio, lipase is added in a solvent-free system, stirring and reacting are carried out for a period of time at certain temperature, a transesterification reaction is carried out, and a product containing medium-long chain structure triglyceride is obtained. The method for enzymatically synthesizing medium-long chain structure triglyceride is high in reaction speed, high in conversion rate and mild in reaction condition, is efficient and fast, meets green chemistry and is huge in application potential, and large-scale industrial popularization is convenient.

The invention discloses a lipid nanosuspension containing clevidipine butyrate, and a freeze-drying preparation of the lipid nanosuspension. A preparation method comprises the following steps that (1) a surfactant is dispersed in an aqueous solution to form a solution A; (2) the clevidipine butyrate is dispersed in the solution A obtained in Step (1) to form a suspension solution B; (3) the suspension solution B is cut for 1-5min at a high speed to form a first emulsion C; (4) the first emulsion C is subjected to high-pressure homogenization treatment, and the clevidipine butyrate lipid nanosuspension is obtained; (5) a freeze-drying protective agent is added to the nanosuspension, and filtration and sterilization are performed; (6) freeze-drying is performed, moisture is removed, and the freeze-drying preparation of the clevidipine butyrate lipid nanosuspension is obtained. The lipid nanosuspension and the freeze-drying preparation are free of any organic solvent and long chain triglyceride or medium chain triglyceride, high in safety, low in toxic and side effects, high in drug loading capacity, good in stability and free from drug leakage; and meanwhile, a preparation technology is simple, and the repeatability is good, and the industrial production can be realized.

Pharmaceutical formulations and methods of producing and using the same are described and claimed. The formulations are dispersions of phospholipids and one or more pharmacologically active compounds, pharmaceutically acceptable salts thereof, or prodrugs thereof. In specific embodiments, the pharmaceutically active compounds are ansamycins and the overall formulation is substantially devoid of medium and long chain triglycerides.

The invention provides anti-inflammatory and analgesic flurbiprofen axetil injection and a preparation method thereof. A mixture of 0.1-10 percent (w/v) of flurbiprofen axetil, 10-20 percent (w/v) of middle chain triglyceride (MCT) and 10-20 percent (w/v) of long chain triglyceride (LCT) is contained in the prescription (wherein the proportion of MCT and LCT is 4:1-1:4). The preparation method comprises the following steps: taking 1-5 percent (w/v) of lecithin as an emulsifying agent, taking 1-5 percent (w/v) of glycerol as an isotonic agent, finally adding disodium hydrogen phosphate, citric acid and water for injection and adjusting the pH value to 4-7 to prepare flurbiprofen axetil fat emulsion injection through colostrums, homogeneity and sterilization. The injection has the beneficial effects that the anti-inflammatory and analgesic effect is taken more quickly; the accumulation of fat of a human body can be reduced, and fatty tissues and liver load can be reduced; and the injection is more suitable for critically ill patients and people with poor liver functions and has lower toxic and side effects.

The invention discloses a synthesis method of medium/long-chain triglyceride. The method comprises the following steps: weighting medium-chain triglyceride and long-chain triglyceride according to a molar ratio of 1:0.5-2, mixing, adding the mixture in a sealed vacuum reaction vessel, drying at 80-100 DEG C for 30-90min under stirring; keeping the temperature of the mixture to 50-80 DEG C, adding sodium methoxide accounting for 0.1%-0.6% of the total weight of oil under the vacuum condition to perform ester exchange reaction for 20-80min, then stopping heating, adding citric acid solution accounting for 9%-11% of the total weight of medium-chain triglyceride and long-chain triglyceride to stop the reaction, rinsing, centrifuging and performing vacuum drying to prepare the medium/long-chain triglyceride. The method disclosed by the invention has clever conception, simple process and low production cost, is suitable for industrial production and can be used to provide a selection foundation of the technological parameters of the medium/long-chain structural triglyceride (STG) synthesis and determine the specific process and parameters of the high content medium/long-chain STG synthesis.

The present disclosure provides a pharmaceutically acceptable, stable, and optically clear oil-in-water nanoemulsions (intensity-averaged diameter<100 nm) with an oil phase comprising >10% w/v of long chain triglyceride, total surfactant and cosurfactant concentration less than that of oil phase and without the use of alcohol as cosolvent in the aqueous phase. The nanoemulsions of this disclosure have extremely favorable particle size distribution, optical clarity, and product stability against Ostwald ripening with high levels of oil concentrations. Poorly water soluble, therapeutically active agents and others can be incorporated in the nanoemulsion systems to improve their solubility/stability in aqueous medium or to enhance their delivery for use in pharmaceutical, food, cosmetic, and other applications by oral, intravenous, subcutaneous, intra muscular, inhalation, nasal, topical, ocular, and transdermal routes.

The invention discloses a method for synthesizing medium-long-chain structure ester by an enzymic method. Crushed immobilized lipase is used as a catalyst; long-chain triglyceride and medium-chain triglyceride are fed according to a mass ratio of 6.4 to (2 to 10); the reaction temperature is 45 to 80 DEG C; the stirring reaction is performed for 1 to 10h in the vacuum state. When the method is used for preparing the medium-long-chain structure ester, the enzyme consumption can be reduced; the reaction time is shortened; the generation quantity of byproducts such as diglyceride is reduced; theproduct acid value is reduced; the high target product yield is maintained, so that the target product production cost is reduced; the economic benefits are improved.

The invention provides a method for preparing a medium and long-chain structure lipid composition for nutritional treatment of breast diseases, and relates to the field of synthesis of oil and fat. The method includes utilizing medium-chain fatty acid triglyceride, long-chain fatty acid triglyceride, conjugated linoleic acid glyceride and plant sterol as raw materials to perform transesterification in a reactor to obtain medium and long-chain triglyceride through the pretreatment step; performing further treatment and mixing with silica, N-acetylneuraminic acid, beta-hydroxyl-beta-HMB-Ca, konjac glucomannan, mangosteen extract, elderberry and yeast beta-glucan to prepare the medium and long-chain structure lipid composition. The method is simple, convenient and inexpensive. At the same time, the medium and long-chain structure lipid composition prepared by the above preparation method can be used for nutritional treatment of the breast diseases.

The invention discloses a method for preparing high-purity medium-chain and long-chain triglyceride. The method is characterized by comprising the following steps: (1) adding immobilized enzyme into areactor, and preheating the reactor; (2) adding long-chain triglyceride and medium-chain triglyceride into a slot of the reactor as reaction materials, preheating, adding the reaction materials intothe reactor, adding a transesterification catalyst, introducing nitrogen, uniformly mixing the materials, and carrying out transesterification at a constant temperature; (3) carrying out molecular distillation on a product mixture of the transesterification, so as to obtain medium-chain and long-chain triglyceride; (4) putting medium-chain and long-chain triglyceride obtained in the step (3) and medium-chain fatty acid into the reactor containing immobilized enzyme, adding an activating enzyme catalyst, introducing nitrogen, and carrying out acidolysis on the mixed material at a constant temperature; and (5) distilling and refining an acidolysis reaction product obtained in the step (4), so as to obtain medium-chain and long-chain triglyceride. The method for preparing medium-chain and long-chain triglyceride is high in catalysis speed and enzyme reutilization rate and suitable for preparing high-purity medium-chain and long-chain triglyceride.

The invention discloses olive oil containing long-chain triglyceride injection. The injection comprises the following components: 140-170mg/ml of olive oil, 30-60mg/ml of soybean oil, 0.0002-0.0025mg/ml of oleic acid, 0.005-0.02mg/ml of purified lecithin and 20-28mg/ml of glycerinum, wherein the pH value of the injection is regulated to 7.0-9.5 by a pH regulating agent. The invention also discloses a method for preparing the olive oil containing long-chain triglyceride injection, which is simple in operation process, the product grains are uniform in side by controlling homogenizing pressure, time, temperature, nitrogenizing and other processes, the oxidation index, asepsis and other related indexes can reach standard, the product is good in stability, and the problems that oxidation index of grains easily exceeds the standard and the grains are easily aggregated when placed for a long time can be solved.

The invention discloses a method for mixedly and catalytically synthesizing triglyceride of a medium-long-chain structure. The method comprises the following steps: mixing long-chain triglyceride withmedium-chain triglyceride according to a mass ratio of 1 to (0.1 to 3), preheating under a solvent-free system, meanwhile adding lipase and acid saturated aluminum oxide, vacuum stirring to perform heating reaction and reducing pressure and performing suction filtration to obtain a product containing the triglyceride of the medium-long-chain structure. The catalytic synthesis ester exchange method disclosed by the invention has the advantages of quick reaction speed, high conversion rate, small diglyceride byproduct, moderate reaction, simple aftertreatment, high efficiency, quickness, greenness, environmental friendliness, suitability for industrial large-scale popularization and great social benefit.

Disclosed is a method for preparing a medium-long-chain triglyceride using a packed bed reactor, and belongs to the technical field of deep processing and modification of lipids. In the present invention, a medium-chain fatty acid triglyceride and a lipid as raw materials are subjected to a catalyzed transesterification using an immobilized enzyme having a 1,3 position-specificity being capable of catalyzing a transesterification reaction in the packed bed reactor to prepare a medium-long-chain triglyceride; the transesterification product is then subjected to an ethanol extraction to obtain a highly pure medium-long-chain triglyceride product; and the product remaining after the extraction useful as a raw material is backfilled into the reactor and continues to participate in the next batch of preparation of a medium-long-chain triglyceride.

The present invention relates to improved formulations for administration lipophilic drugs, and in particular to improved propofol formulations. Emulsion of the present invention preferably comprise oil droplets of a mean oil particle diameter of 80-300 nanometers; and a continuous aqueous phase comprising a lipophilic drug in an amount 0.5-5.0% by weight relative to the weight of the total emulsion, wherein said lipophilic drug has a solubility in water of less than 1 mg/mL; a primary oil physiologically suitable for parenteral administration to a mammal comprising plant-derived biocompatible long chain triglycerides; and a secondary oil comprising an ethyl ester of a saturated, unbranched carboxylic acid of 4-8 carbon atoms or an unbranched alkyl esters of acetic acid, said alkyl residue having 4-8 carbon atoms, or combination thereof, the combined percentage by weight of the oil components not exceeding about 10 percent.

The invention discloses a preparation method of a special weight reducing dog food for dogs at the obesity period. The special weight reducing dog food is characterized by comprising the following rawmaterials in parts by weight of 10.0-20.0% of meat, 5.0-8.0% of goat milk, 5.0-10.0% of coarse food grains, 6.0-13.0% of vegetables, 4.0-8.0% of milk residues, 2.0-5.0% of animal fat, 1.0-2.0% of cod-liver oil, 1.0-3.0% of yeast, 2.0-4.0% of carotene, 4.0-7.0% of bone meal, 8.0-10.0% of carnitine tartrate, 8.0-10.0% of glycerin fatty acid ester, 100.0-150.0L of refined plant extracts and 10 grams/kg of salt. According to the preparation method of the special weight reducing dog food for dogs at the obesity period, the glycerin fatty acid ester can reduce the blood fat concentration of patients suffering from hypertriglyceridemia, improve the lipoprotein level and enable weight, BMI, waistline, subscapular skinfold thickness, body fat weight, abdomen fat total area and abdomen subcutaneousfat area of crowds having overweight somatotype to be significantly reduced, and besides, the reduction degree is obviously better than that of long chain triglyceride; and research proves that the glycerin fatty acid ester can be merged into a healthy weight reducing scheme without worrying about negative metabolism danger factors.

An improved process for producing an oil-in-water emulsion to deliver a substantially water insoluble active pharmaceutical ingredient includes creating a microemulsion containing such ingredient in the oil phase of the emulsion by mixing an aqueous phase including non-ionic surfactant, polyol, and water, wherein the weight ratio of the surfactant to polyol to water is between 10:20:70 and 1:1:1, to generate a mixture, with an oil phase comprising a substantially water insoluble active pharmaceutical ingredient and a long-chain triglyceride; circulating the said mixture through a homogenizer at a temperature from 20° C. to 60° C. to generate a coarse emulsion; passing the coarse emulsion through a microfluidizer at a pressure of from 70 MPa to 150 MPa at least once to produce an oil-in-water microemulsion; and, optionally, filtering the microemulsion through a 0.2 μm filter and/or mixing the microemulsion with a polymeric stabilizer.

The present invention relates to a cyclosporine emulsion containing: i) a cyclosporine ii) a natural oil (long chain triglyceride) iii) a phosphatidylcholine, iv) glycerol, v) a pharmaceutically tolerable alkali salt of a free fatty acid, vi) a medium chain triglyceride-oil vii) optionally, hydrochloric acid or sodium hydroxide for pH adjustment viii) water.