Method for processing fats and oils

FIELD: food industry.

SUBSTANCE: method for neutralizing the acidity of fats and oils to produce micronutrients and a product of fatty acids and to extract refined oils includes: feeding the pretreated oil stream to a vacuum vapour distillation section distilling volatile phases; feeding the distilled volatile phases to the high-temperature condensation stage or to the combination of the high-temperature and the mid-temperature condensation stages to obtain the condensed phase (A) and the vapour phase (E); sending the condensed phase (A) to the vacuum distillation process and sending the vapour phase (E) to the low-temperature condensation stage; the effect on the condensed phase (A) of the vacuum distillation process and obtaining a high-temperature distillate and a stream of volatile substances; feeding the vapour phase (E) from the high-temperature condensation stage together with the stream of the volatile substances (C) from the vacuum distillation process to the low-temperature condensation stage to obtain the stream of non-condensable gases and low-temperature distillate, providing the stream of the non-condensable gases the possibility to be retained in the vacuum system, and extracting he refined oil stream from the vacuum and vapour distillation section.

EFFECT: invention makes it possible to increase the content of tocopherols during the neutralisation of oils.

14 cl, 12 dwg, 5 tbl, 3 ex

 



 

Same patents:

FIELD: food industry.

SUBSTANCE: apparatus for refinement of vegetable oils and fats consists of a vertical cylindrical body with a conic bottom enclosed inside a steam jacket, a vertical shaft with rectangular vertical blades, a drive, nipples for delivery and discharge of oil, heating steam and condensate as well as the gas phase; the rectangular vertical blades are perforated with slanted flat-topped guides installed on their rear sides for each hole respectively.

EFFECT: invention allows to improve efficiency of vegetable oil stirring with reagent drops or bleaching powder particles which reduces the duration of chemosorption and absorption processes; stirring energy expenditure is also reduced due to creation of predominantly mixed radiaxial and tangential circulation of the liquid phase in the apparatus with reduction of front resistance of the vertical rectangular blades as conditioned by their perforation and the slanted flat-topped guides in place.

1 dwg

FIELD: food industry.

SUBSTANCE: organoleptical properties improvement is achieved by the fish oil microcapsules production method characterised by obtainment of an oil-in-water emulsion by way of mixing fish oil and an encapsulation ingredient in water; the components are taken at a ratio 30-35 and 25-30 wt %, water - balance; the method additionally involves homogenisation and dispersion of the obtained emulsion in an ultrasonic field and microemulsion subsequent spray drying; ultrasonic dispersion is carried out with insonification frequency equal to 28 kHz and intensity equal to 40 W/cm2; spray drying is carried out with a parallel hot air flow with the temperature at the inlet and outlet equal to 160-180°C respectively.

EFFECT: simplification and enhancement of microencapsulation processes efficiency during production of deodorised and encapsulated fat-soluble food products, in particular, improvement of organoleptic properties of fish oils used for food products enrichment.

4 cl, 6 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: group of inventions relates to biotechnology. Methods consist in the application of a lipolytic enzyme, possessing the glycolipase activity, isolated from Corynebacterium and containing at least one motif GDSX, where X represents a hydrophobic amino acid residue, or the GANDY block, containing the amino acid motif GGNDA or GGNDL, or HPT block. The said enzyme contains the amino acid sequence SEQ ID NO:8 or an amino acid sequence, which is at least 70% identical to it, or is coded by the nucleotide sequence SEQ ID NO:9 or a nucleotide sequence, which is at least 70% identical to it, and which codes the said lipolytic enzyme. When applied in the said methods, lipolytic enzymes from Corynebacterium possess the considerable galactolipid-hydrolysing activity and/or considerable acyltransferase activity with respect to galactolipid.

EFFECT: claimed are: a method of obtaining lysoglycolipid, a method of conversion of glycolipids and a method of obtaining food product.

21 cl, 17 dwg, 4 tbl, 12 ex

FIELD: food industry.

SUBSTANCE: invention relates to fat-and-oil industry. The vegetable oil refinement method envisages mixing of unrefined vegetable oil with a water solution of a hydrating agent represented by a culinary salt solution having concentration equal to 11- 16% in an amount of 0.5-0.8% of the oil weight; after mixing one performs the produced mixture stirring during 16-20 minutes, treatment with an acidic reagent solution having concentration equal to 21-25% in an amount of 0.35-0.80% of the oil weight and stirring during 16-25 minutes; into the produced mixture one adds a water solution of an alkali reagent represented by a liquid sodium glass solution or a solution of SilicaGel RAF 200 reagent for refinement of vegetable oils in an amount of 50% of the required estimated quantity; one proceeds with further continuous stirring for silicic acid gel formation and then determines acid number of oil; for neutralisation of free fatty acids one adds a solution of liquid sodium glass solution or a solution of SilicaGel RAF 200 reagent for refinement of vegetable oils in an amount of 50% the required estimated quantity. After neutralisation and soapstock flakes formation, one adds 5-6% solution of FL 45 C polycationite in an amount of 60-70 g per 1 ton of vegetable oil into the produced mixture and stirs the mixture during 16-25 minutes; then oil is settled, filtered and frozen out; treatment with reagents is performed at a temperature of 25-30°C.

EFFECT: invention allows to create a high-tech refinement method allowing to increase performance of production of refined oil with improved organoleptic properties, reduce the prime cost of the product manufacture as well as enhance the product organoleptic indices due to the mixture homogeneity.

5 cl, 2 ex

FIELD: food industry.

SUBSTANCE: strongly acidic hydrofuse treatment method involves hydrofuse heating and separation into fractions with the help of an activator, the mixture stirring and settling. One preliminarily determines hydrofuse volume, initial hydrofuse hydrogen index and isoelectric point of initial hydrofuse protein. Then hydrofuse is heated up to 85-90°C. If hydrofuse pH is equal to <3.7, heated hydrofuse is introduced (while simultaneously stirred) into the vessel with the activator. The activator is represented by a buffer mixture, for example, acetate one with fixed hydrogen index 0.09-0.1 units lower than isoelectric point of hydrofuse protein and volume 40-50 times less than initial hydrofuse volume.

EFFECT: invention allows to enhance efficiency of phosphatides extraction from strongly acidic hydrofuse, reduce energy expenditures, improve production environment and environmental safety due to inorganic acids and alkalies.

2 tbl, 3 ex

FIELD: food industry.

SUBSTANCE: method for deep frying fat purification with natural adsorbents usage envisages 180°C thermally treated deep frying fat settling to remove mechanical admixtures with simultaneous cooling. Fat is poured into an adsorptive bath covered with a heating jacket and is combined with gaize, dolomite and magnesium silicate at the following ratio: gaize - 2% of the fat weight, dolomite - 2% of the fat weight, magnesium silicate - 1% of the fat weight.

EFFECT: invention allows to enhance the quality and simplify the technique of deep frying fat purification and reduce adsorbent quantity.

1 tbl, 1 dwg

FIELD: food industry.

SUBSTANCE: method involves hydrofuse separation into fractions by way of an activator introduction into the hydrofuse, the mixture stirring and settling. One preliminarily determines the volume Vhf, water saturation coefficient Kw.hf, hydrogen index of initial hydrofuse pHhf and isoelectric point of hydrofuse protein pHis. If pHhf parameter is more then 5.0 units (slightly acidic hydrofuse) hydrofuse is heated up to 90-95°C; the activator represented by orthophosphoric acid is gradually introduced in small portions; under control, the hydrogen index is conditioned to pHhf value equal to 5. For water electrochemical activation one produces anolyte required for obtainment of pH value parameter corresponding to isoelectric state of protein pHis that is determined from the formula: Va=VhfKwhf(5pHis)(pHispHa),m3 where Vhf - hydrofuse volume, m3; Kwhf - hydrofuse water saturation coefficient, unit fraction; pHa - anolyte hydrogen index; pHis - medium hydrogen index corresponding to isoelectric state of protein in sunflower oil.

EFFECT: invention allows to simplify the processing process and enhance efficiency of phosphatides and oil extraction from hydrofuse.

3 ex

FIELD: food industry.

SUBSTANCE: invention relates to fat-and-oil industry and may be used for vegetable oils purification. The method envisages hydration with an electrolytic solution, phosphatide emulsion separation from oil, neutralisation with water electrolysate with pH>7 with addition of salt to produce activated salt solution with concentration equal to 0.1-1% and neutralised oil separation. Then oil is hydrated by way of stirring with formation of centrifugal flows with vortices inside the flows; then one performs settling, drying and deaerating in vacuum under a pressure of 40-50 kPa. At first one performs oil pouring into the reactor and addition of water anolyte with pH<7 in an amount of 1-8% of the oil weight, heating the mixture up to 65-80°C, vacuumising the reactor to a pressure equal to 40-50 kPa. According to the other method, after heating the reactor is filled with an inert gas. Then one simultaneously performs mixing of water with oil in the vacuumised reactor with a rotor at a rotation rate of 2000-20000 rpm and vibration impact on the reactor body. Then vibration impact frequency produces an even number of lengths of waves fitting within the reactor diameter length. This ensures creation of the mixture additional oscillations crosswise to the vortex flow till formation of an ultradisperse emulsion with particles sized 0.1-0.5 mcm.

EFFECT: invention allows to reduce oil oxidation in the process of refining and increase the oil yield.

2 cl, 1 tbl, 4 ex

FIELD: food industry.

SUBSTANCE: method involves separation into fractions by way of an activating agent addition, the mixture stirring and settlement; for production of a hydrofuse batch, one determines the hydrofuse volume, water saturation ratio, pH index of source hydrofuse and source hydrofuse proteins isoelectric state value. If pH index of source hydrofuse pHhf<3.7, an activating agent is introduced into hydrofuse represented by crystalline culinary salt, its weight determined from the formula: P=0,06VhfKwhfγ(pHispHhf), kg              (1), where Vhf - hydrofuse volume, m3; Rwhf- hydrofuse water saturation ratio, unit fractions; pHhf - pH index of source hydrofuse; pHis - source hydrofuse proteins isoelectric state value; γ - specific weight of culinary salt, kg/m3. The mixture components are stirred in the reactor, then heated to a temperature of 85 - 90°C and poured over into a broad large volume vessel. . One proceeds with settlement during 2-18 h for natural progress of the reaction of separation into oil, water and phosphatide concentrate. Oil, water and phosphatide concentrate are partly isolated. In subsequent volumes of source hydrofuses one determines the required parameters in the same way. The process of separation of subsequent hydrofuse volumes (pH index of source hydrofuse pHhf<3.7) into oil, water and phosphatide concentrate proceeds recurrently in the same vessel with a residue amounting to at least 50% of the previous fracture separation mixture quantity. For all subsequent separation operations the mixture settlement time is 2÷6 h.

EFFECT: invention allows to enhance efficiency of phosphatides isolation from hydrofuse, reduce energy costs as well as improve the production environmental safety due to exclusion of chemical reagents represented by acids and alkalis.

FIELD: food industry.

SUBSTANCE: method for clearing vegetable oils from waxes envisages oil freezing out with addition of accessory filter powders. Then oil is maintained under low temperature conditions; then spent filter powder with wax-containing sediment is separated from the cleared vegetable oil. The spent separated filter powder is subjected to regeneration by way of maintenance in UHF electromagnetic field with radiation frequency equal to 2450 MHz, specific power equal to 800-1000 W/kgduring 8-15 minutes with simultaneous impact of ultrasound with specific power equal to 15-17 W/cm2 and oscillation frequency equal to 60-80 kHz. Then the spent filter powder is separated into a wax fat product and regenerated filter power. The regenerated filter powder is repeatedly used in subsequent cycles of oil freezing out.

EFFECT: invention allows to improve cleared oil quality due to reduction of peroxide and anisidine compounds content, increase oil safe storage life, enhance performance of equipment for regeneration of spent powder for freezing out operations.

4 tbl, 2 ex

FIELD: fat-and-oil industry.

SUBSTANCE: method comprises treatment of raw material with fine adsorbent followed by separation of adsorbent and filtration thereof. Adsorbent is silica containing aluminum compounds and water and obtained by synthesis from silicohydrofluoric acid and aluminum hydroxide taken in specified proportions.

EFFECT: improved quality of refining, reduced losses, and simplified refining procedure.

2 cl, 2 tbl, 3 ex

FIELD: fat-and-oil industry.

SUBSTANCE: process comprises hydration of oil, treatment with orthophosphoric acid, neutralization of oil with alkali, separation of soap stock, and filtration. In hydration step, vegetable oil is heated to 60°C. Orthophosphoric acid is used in amount 0.8 kg per 1 t oil. Before separation of soap stock, to neutralized soap stock-containing oil, 4% polycationite FL solution is added at stirring for 15-20 min in amount 50 g per 1 t oil at 45°C and atmospheric pressure.

EFFECT: improved physicochemical characteristics of oil due to enhanced separation of soap stock, reduced amount oil waste in soap stock, and eliminated washing of oil with water.

1 tbl, 2 ex

FIELD: fat-and-oil industry, in particular, vegetable oil refining processes.

SUBSTANCE: method involves freezing out vegetable oil while adding auxiliary filtering powders; holding vegetable oil at low temperature; separating used filtering powder with wax-containing sediment from refined vegetable oil and regenerating separated used filtering powder; during regeneration process, mixing used filtering powder with additionally introduced fatty product to pasty state; heating while mixing to temperature sufficient for melting of all wax fractions and separating resultant mixture by centrifuging into regenerated dry filtering powder and wax-containing fatty product. Regenerated filtering powder produced may be utilized multiple times in the processes of freezing out of vegetable oil.

EFFECT: increased adsorptive activity with respect to wax globules on surface of filtering powder particles, reduced total consumption of filtering powder, obtaining of concentrated wax-containing fatty products immediately from used sediments, reduced loss of winterized oil due to blocking of inner pores of particles by wax-containing fat product.

FIELD: food processing industry.

SUBSTANCE: functional-destination corn oil is produced by treating hydrated corn oil in helically rotating thin (0.1-0.2 mm) film at rotation speed 20 to 40 c-1 and 60-80°C. Thus treated oil is neutralized with 5-15% excess of sodium silicate aqueous solution (200-270 g/L) at 60-80°C and neutralized oil is then separated from soap stock by settling. Neutralized oil is further washed with water in amount 5 to 15% based on the weight of oil at 80-90°C and washed oil is settled to separate water, dried, filtered, and deodorized at 160-170°C and gauge pressure 1-3 mm Hg.

EFFECT: achieved production of oil reducing excess content of cholesterol in blood serum and in liver.

3 tbl, 3 ex

FIELD: food processing industry.

SUBSTANCE: functional-destination corn oil is produced by treating hydrated corn oil in helically rotating thin (0.1-0.2 mm) film at rotation speed 20 to 40 c-1 and 60-80°C. Thus treated oil is neutralized with 5-15% excess of sodium silicate aqueous solution (200-270 g/L) at 60-80°C and neutralized oil is then separated from soap stock by settling. Neutralized oil is further washed with water in amount 5 to 15% based on the weight of oil at 80-90°C and washed oil is settled to separate water, dried, filtered, and deodorized at 160-170°C and gauge pressure 1-3 mm Hg.

EFFECT: achieved retention of a large amount of tocopherols possessing strong antioxidant properties.

3 tbl, 3 ex

FIELD: food processing industry, in particular production of functional foodstuffs.

SUBSTANCE: claimed oil is obtained by treatment hydrated corn oil in thin (0.1-0.2 mm) film helix-rotating at rate of 20-40 c-1 at 60-80°C followed by neutralizing of treated oil with aqueous sodium silicate with concentration of 200-270 g/l under excess of 5-15 % at 60-80°C, and separation of neutralized oil from soap stock by settling. Neutralized oil is washed with water in amount of 5-15 % based on oil mass at 80-90°C followed by separation of washed neutralized oil from washing water, settling, filtering and deodorization at 160-170°C and residual pressure of 1-3 mm Hg.

EFFECT: vegetable oil useful in normalizing of lipid metabolism, particularly in reducing of lipid levels in blood and liver.

3 tbl, 3 ex

FIELD: fat-and-oil industry; methods and devices of cryogenic refrigeration of the oils.

SUBSTANCE: the invention is pertaining to the field of fat-and-oil industry. The method of cryogenic refrigeration of the oils provides for refrigeration, crystallization of the waxen substances with utilization of the vapors of the cryogenic agent and stirring, seasoning, heating up and filtrating of the oils. At that the stirring is conducted with formation of the rarefaction areas, in which the cryogenic agent is directly fed for refrigeration of the oil. And the waste vapors of the cryogenic agent after the crystallization of the waxen substances in the oil purified, separated and concentrated by the baromembrane methods are used as the inert gas at storing the oil. The installation includes arranged along the run of the production process components: pumps, the tank for the purified oil, the heat-exchangers, the refrigerator, screens, the sediment collector, the intermediate collector, the mixer, the heater and the cryogenic crystallizer. Behind the heater there are additionally in series mounted the compression pump, the membrane-type generator and the filling device for filling the oils in the leakproof tare. In the first version the cryogenic crystallizer with the heat-insulation is made in the form of the closed cylindrical body having: the tangentially located to it branch-pipe for the oil feeding, inside which there is the coaxially located fitting pipe for the liquid cryogenic agent feeding; the conical detachable cover; the conical bottom and arranged along the run of the production process - the hydrocyclone, the clarifier in the fluidized layer, the settling tank, the thin layer multihydrocyclone made out of the coaxially arranged plates, the clarifier in the fluidized layer, the forced settler-separator, the aerator-flotation device-hydrocyclone, the coalescing screen and the flotation chamber formed by the conical detachable cover, in the upper part of which there is the vacuum filter. The vacuum filter represents the drum, the filtration surface of which is made out of the metal-ceramics, above which there is the knife. At that inside the drum there are partitions connected with the hollow shaft linked by the system of the pipelines with the branch-pipes used accordingly for feeding of the gaseous cryogenic agent in the coalescing screen and in the clarifier. At that the clarifier is located in the fluidized layer behind the coalescing screen. The aerator-flotation device-hydrocyclone are supplied with the branch-pipes with screens, and the settling area collector of the coalescing screen - with the branch pipe without the screen. In the second version the crystallizer with the heat-insulation is made in the form of the oval-shaped body with the inlet and outlet branch-pipes with the screens. In the upper part of the conical detachable cover of which there is the vacuum filter and inside the body there is the two-blade stirrer fixed on the hollow shaft. At that the shape of the blades is precisely repeat the internal surface of the cryogenic crystallizer and have the holes located in symmetry on the both sides respect to the attached to their middle part perforated tubes for the cryogenic agent feeding and are placed so, that the areas of their operation are overlapping. At that the holes in the perforated tube there are only in its spherically bent part and are guided in the direction opposite to the direction of rotation of the stirrer. The invention allows to increase efficiency of the installation operation, to reduce the specific power consumption and costs of materials at utilization of the cryogenic agent and to ensure the high quality of the oil at storing.

EFFECT: the invention ensures the increased efficiency of the installation operation, reduction of the specific power consumption and the costs of materials at utilization of the cryogenic agent, the high quality of the oil at storing.

3 cl, 8 dwg

FIELD: fat-and-oil industry.

SUBSTANCE: process comprises providing oil-containing vegetable raw material, extracting oil from oil-containing vegetable raw material by way of pressing it and separating oil cake. Extraction of oil from resulting oil cake on extraction installation (which is a part of the invention), wherein two cake deoiling are combined: mixing of cake with extractant used at weight ratio 1:(1.9-2.2) for 10-15 min and final counter-current deoiling on inclined screw extractor to residual content of fat in the cake not higher than 1%. Oil obtained through pressing and extraction is refined using complex refiner consisting of three constituents. The first constituent is high-molecular weight electrolyte or mixture of high-molecular weight electrolytes; the second one is low-molecular weight electrolyte or mixture of low-molecular weight electrolytes; and the third one are organic and/or inorganic peroxides and/or hydroperoxides, taken at weight ratio 1:(25-250):(0.5-2.0), respectively. Refiner is used in amount of 0.2 to 1.5% of the total weight of oil being refined. Mixing of the oil being refined with complex refiner is effected no longer than 30 min at temperature between 0 and 100°C by way of creating spiral trajectory of movement of resulting mixture in a suitable apparatus (which is a part of the invention), after which mixture is settled.

EFFECT: achieved high-performance vegetable oil production technology owing to reduced losses of oil in extraction and refining processes.

30 cl, 2 deg, 1 tbl, 5 ex

FIELD: fat-and-oil industry, in particular, clearing vegetable oils and fats used for obtaining of food product such as ketchup.

SUBSTANCE: method involves withdrawing phospholipids free from fatty acids, colorants, waxes and odorizing substances using reactant, with mixture of sunflower oil, carrot oil, wheat grit oil and nut oil utilized in the ratio of 1:1:1:1 being used as mixture of vegetable oils, and general-purpose composite reactant consisting of oxyethylene cellulose, sodium metasilicate and phosphoric acid used in an amount of, wt%, 50, 45, 5, respectively, being utilized as reactant; mixing oil and reactant at temperature of 20-50 C.

EFFECT: increased yield of oils and reduced production costs, improved component composition for dietary feeding, optimal functional and rheological properties, improved quality of oils designed for obtaining of food products such as ketchup.

3 ex

FIELD: fur animal farming.

SUBSTANCE: invention concerns fat-and-oil industry, namely to production of fur animal fats useful in cosmetics, medicine, and domestic chemical goods industry. Refinement of fats envisages treating fats with sodium metasilicate used in amount of 1-3% of the weight of fats. Treatment is carried out by stirring mixture for 15-20 min at stirring speed 30-45 sec-1, while the whole refinement procedure proceeds at 45-55°C. Raw material used is mink, polar fox, and fox fats.

EFFECT: reduced process time and improved quality of product due to more complete removal of associating substances.

3 ex

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