The way demineralization of cow's milk
(57) Abstract:Usage: in the dairy industry, in particular when demineralization of cow's milk. The inventive milk first comes in contact with the anion exchange resin in the bicarbonate form within 5 to 15 minutes at volume ratio of anion exchange resin-milk 1 : 100 - 1 : 10, and then with a strongly acidic cation exchanger in the form for 5 to 30 min at a volume ratio of the cation-milk 1 : 200 - 1 : 25. table 4. The invention relates to the dairy industry, in particular the production of demineralized bovine milk, in its mineral composition approaching that of female milk.There is a method to change the composition of cow's milk in order to remove ions of alkaline and alkaline-earth metals from milk and whey with a pH of more than 5 (1), linking their synthetic aluminosilicates with high binding capacity (more than 50 mg CA/d), for example, zeolite 4A. After that, the aluminosilicate with sorbed thereon ions are removed, and the product is subjected to ultrafiltration or ion exchange. However, one-time use of zeolite and the need for further processing of milk by ultrafiltration or ion exchange reduces the value of this method.) - Rev. the eye is passed through the cation exchange resin amberlite JR 120 In strongly acidic form. There is a replacement of sodium by potassium or other cations. Proposed modes of ion exchange helped to reduce raw milk sodium 65 mg/l at constant concentrations of calcium and magnesium.However, only decrease the sodium content in cow's milk while maintaining the concentrations of other macro - and micronutrients not solved the problems of approaching it in mineral composition to breast milk.A method of obtaining skim milk with a lower content of phosphorus and calcium (3). Skim milk acidified with citric or hydrochloric acid to a pH of 5.4 to 5.6 and passed through an anion exchange resin in hydroxide form. The pH of skim milk rises to 11.5, then decreases to 8.5. Neutralize the milk to pH=7 by addition of citric acid. Obtained milk contains (mg/l):phosphate 1200; nitrates 1500; calcium 570.The degree of demineralization by cations is 20% but is entered in the system 1500 mg/l of citrate ions, which is a significant disadvantage of this method. In addition, increasing the pH of the milk to 11.5 reduces native protein quality of milk.The closest in technical essence to tallennetta for the partial removal of calcium from cow's milk to get him on the physico-chemical parameters to breast milk. In this case, the original cow's milk is cooled to 8oC, acidified to 21oT and passed through a column of cation exchange resin-sulfopropyl KU-1 or polystyrene KU-2. Consumption of cation exchanger KU-1 2,22% KU-2 2,48% by weight of milk.The disadvantage of this method is that the pH of milk is becoming critical, the milk becomes unstable. In addition, the content of other cations such as potassium, sodium, magnesium, and anions of phosphorus, chlorine in milk remains unchanged, demineralization of milk insignificant 9,2%
The aim of the proposed method is an approximation of cow's milk on mineral composition to breast milk. This objective is achieved in that in the method of demineralization cow's milk, involving contacting the milk with a cation exchange resin, milk previously subjected to contact with the anion exchange resin for 5 to 15 min at a volume ratio of anion exchange resin-milk 1 100 1 10, and the contacting milk cation exchange resin is carried out for 5 to 30 minutes at a volumetric ratio of the cation-milk 1 200 1 25, and the anion exchange resin used in the bicarbonate form, and the strongly acidic cation exchanger in the form.The proposed method changes the mineral composition of cow's milk is consistent proposalsare may be different depending on the need.How demineralization cow's milk is as follows.Fresh whole or skimmed milk with a pH of 6.4 to 6.9 passed through a column of anion exchange resin AMH in bicarbonate form at a temperature of 6 of the 20oC. the contact Time is 5 to 15 minutes at a volumetric ratio of the anion-milk 1 100 1: 10, which corresponds to 10 to 100 ml of anion exchange resin in 1 liter of milk. The granule size of the anion are 0,61 2 mm and Then treated with anion exchange resin, the milk is passed through a column of cation exchange resin KU CHCs in the strong acid form at a temperature of 6 of the 20oC. a contact Time of 5 to 30 minutes at a volumetric ratio of the cation-milk 1 200 1 25, which is 5 to 40 ml of nationite on 1 l of milk. The granule size of the cation of 0.6 to 1.2 mmTable 1 presents experimental data on the dependence of the degree of demineralization of cow's milk from the number of the anion and its forms when contact time is 10 minutesAs can be seen from table 1 the efficiency of the anion exchange resin in the bicarbonate form, compared with hydroxide according to the degree of demineralization is much higher. In addition, the milk is passed through the anion exchange resin in the bicarbonate form, has no odor, while the hydroxide form of the sorbent gives milk alkaline odor. From table 1 it is evident takie liters of milk. The optimal value of the degree of demineralization when loading of the sorbent 100 ml per 1 l of milk. The increase in load up to 120 ml slightly increases the degree of demineralization (2% and, therefore, to make the resin more than 100 ml per 1 l impractical.In table. 2 presents the experimental data according to the degree of demineralization of cow's milk from a quantity of cation exchange resin KU-2 x cs in strongly acidic form at a contact time of 15 minutesAs can be seen, the degree of demineralization of milk in the process of cation exchange depends on the amount of sorbent. The minimum value of the degree of demineralization is achieved by loading the cation exchanger 5 ml per 1 l of milk. The optimal value of
30 ml per 1 l of milk. The maximum value of 40 ml per 1 liter of milk, which corresponds to the ratio of the cation-milk 1 25. The increase in the loading of the cation of more than 30 ml leads to a deterioration in the quality of milk pH approaching eroticheskoe, milk becomes unstable, this effect increases sharply at the loading of the cation over 40 ml. Reduced load less than 5 ml per 1 l of milk leads to inefficient degree of demineralization. The cation exchanger is taken in the N+form, so as soon as the strongly acidic cation exchange resin can remove the above-mentioned cations of milk.
FIELD: food industry; chemical industry; petrochemical industry; pharmaceutical industry; methods and devices of separation of liquid mediums.
SUBSTANCE: the invention presents the method and the device intended for utilization in food industry, chemical industry, petrochemical industry, pharmaceutical industry and ensures an increased efficiency of changing the physical-chemical structure of the liquid mediums. The liquid medium is fed in the form of the two counter-directed streams. The streams are sent in the parallel planes, swirled in the opposite directions, subjected at the mechanical loading to action of the hydraulic impacts and crumpling creating the liquid medium swirling turbulent streams rubbing from the center to the periphery. The liquid medium is fed by cycles, returning from periphery to the rotation center. After the separation process completion conduct processes of settling and filtering. The two counter-directed streams are subjected to swirling in the opposite directions at the identical speeds. In the device the operational tool is made in the form of disks, which are arranged coaxially with the capability of counter-rotation. On each disk there are the ring-shaped and radial grooves. The disks ring-shaped grooves and prominences are installed with a clearance into each other. The volume of the chamber between the disks and the body is connected by the channels to the inlet channels of the liquid medium feeding system. On walls of the chamber and on the external surface of the disks there are the ring-shaped and radial grooves. The disks ring-shaped prominences are mounted with a clearance in the ring-shaped grooves of the walls of the chamber. The shaft of the disks rotation is made horizontal.
EFFECT: the invention ensures an increased efficiency of changing the physical-chemical structure of the liquid mediums.
4 cl, 5 dwg
FIELD: technological processes.
SUBSTANCE: method consists in purification of milk contaminated with cadmium with concentration of (1.1-3.0)±0.1 MPC (maximum permissible concentration), by means of polyfepan powder in proportion of 0.3:1000, contact is executed at temperature of 6°C during 20 minutes, or in proportion of 0.6:1000 at temperature of 45°C during 5 minutes with mixing. Sorbent cleaning is done by centrifugal method in separator-milk purifier.
EFFECT: method allows reduction of cadmium concentration in raw milk.
2 tbl, 2 ex
FIELD: food industry.
SUBSTANCE: this invention covers method of raw milk purification from toxic metals and includes adding of a sorbent agent, purification from sorbent agent, herewith raw milk intoxicated with metals in (1.1…4.0)±0.1 MAC concentration undergoes purification. Purification is performed until 0.5 MAC ratio is reached; contact with a sorbent agent is performed at 6°C, 5 minutes with mixing. Purification from a sorbent agent is performed by a centrifugal method at the separator-milk purifier for cold purification, herewith grapheme powder of 0.1:1000 ratio is used as a sorbent agent.
EFFECT: decrease of toxic metals concentration in raw milk to (95…97)±1% degree of purification.
1 dwg, 2 tbl, 2 ex
FIELD: food industry.
SUBSTANCE: invention relates to a method for purification of defatted milk contaminated with copper, lead and zinc in a concentration from 0.13, 0.23 and 0.34 of MAC respectively. According to the method, one introduces into defatted milk with residual fat content equal to 0.10-0.20% a sorbent preliminarily hydrated with distilled water which sorbent may be represented by alumina oxide powder, broken rice or licorice roots extraction residue, the weight ratio of milk to the sorbents being 25:1. Then one proceeds with maintenance during 20-30 minutes at a temperature of 50-55°C and the sorbent removal by centrifugal method in a milk purifier separator.
EFFECT: invention allows to reduce concentration of copper, lead and zinc and bacterial population in milk and to produce a product of better quality.
1 tbl, 1 ex
FIELD: process engineering.
SUBSTANCE: method of making the filtration element comprises feeding polypropylene into extruder proportioner, smelting it to fluid state, feeding fluid polypropylene to extruder aerodynamic nozzle, air feed to said nozzle, extruding at least one thread to be wound so that tubular structure of filtration element is produced with flat inner surface and threaded outer surface with high density of thread winding at ribs of threaded surface and set of channels extending in helical line from outer surface towards inner surface of said tubular structure. Produced filtration element is used in method of fluid cleaning including fitting said filtration element into cleaning chamber of said filtration element, forcing the fluid therein and through set of filtration element channels and discharging said fluid therefrom. Milk or water can be used as said fluid.
EFFECT: higher efficiency and quality of filtration, simplified design.
7 cl, 2 dwg
FIELD: food industry.
SUBSTANCE: milk product electric treatment device contains a body accommodating an electrode assembly, nipples for liquid input and output and for sediment drain and a current source placed outside the body. The device body is designed in the form of a horizontally positioned hollow cylinder with butt-end caps. Upstream the liquid output nipple, the body has a transition part shaped as a Venturi tube; inside the cylinder, downstream the liquid input nipple, a divider in the form of mesh and preliminary purification mesh electrodes, connected to a separate current source, are sequentially attached. The electrode assembly is designed in the form of cylindrical surfaces consisting of an anode and a cathode coaxially positioned and attached to two discs opposite relative to each other.
EFFECT: elimination of pathogenic microflora, antibiotics, pesticides, disinfection substances, toxins, nitrates, nitrides, heavy metals removal combined with preservation of nutritional and consumer properties of milk products.
SUBSTANCE: group of inventions relates to field of therapy and/or prevention of diseases in mammals, in particular humans. Group of inventions includes medication for treatment and/or prevention of cardiovascular disease, and/or inflammatory disease, and/or liver disease, and/or neurological disease, and/or steatosis by increasing content of polyunsaturated fatty acids in mammal's blood, representing dairy product of ruminants with reduced cholesterol content, where cholesterol content constitutes from 10 mg/100 g of fat to 150 mg/100 g of fat, as well as application of dairy product of ruminants with reduced cholesterol content, in which cholesterol content constitutes from 10 mg/100 g of fat to 150 mg/100 g of fat, for treatment and/or prevention of cardiovascular disease, and/or inflammatory disease, and/or liver disease, and/or neurological disease, and/or steatosis by increasing content of polyunsaturated fatty acids in mammal's blood.
EFFECT: obtaining medication for treatment and/or prevention of cardiovascular disease, and/or inflammatory disease, and/or liver disease, and/or neurological disease, and/or steatosis.
18 cl, 5 tbl, 1 ex
FIELD: food industry.
SUBSTANCE: cheese whey is cleaned from casein dust and grease. Nanofiltration to 20÷30% content of dry substances with simultaneous 25÷50% demineralization, followed by crystallization, is carried out by means of the 3-fold 8-hour cyclic heat treatment of crystallizate. Said treatment consists in sequentially heating it with hot air at the temperature of 60°C for 4 h and cooling with cold air at the temperature of 0°C for 4 hours in each cycle. The crystallization is combined with evaporation till the dry substances concentration of ≥50%, with the subsequent separation into lactose and the demineralized delactosed cheese whey and drying of both components. Heating in each cycle is carried out to the temperature of 32°C, and cooling - to the temperature of ≤10°C.
EFFECT: intensification of the crystallization process.
2 dwg, 2 ex