SU1406147A1 - Method of refining fats - Google Patents

Abstract

The invention relates to the oil and fat industry, in particular to methods of refining fats, and is aimed at reducing the loss of the target product. The method of refining involves treatment with ammonium sulfate, if it is from 5 to 8% of the mass of fat at a pH of 4.2 to 5.8, followed by stirring, heating the mixture to a temperature of 96 to 98 C, separating the phases and washing the fat to neutral reaction. 1 tab.

Description

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FIELD OF THE INVENTION The invention relates to the oil and fat industry and concerns methods for the refinement of fats.

The aim of the invention is to reduce the loss of the target product.

The method is carried out as follows.

The original fat from industrial waste is treated with ammonium sulfate in an amount of 5-8% by weight of fat at a pH of 4.2-5.8, the mixture is stirred, heated to 96-98 ° C, the liquid and solid phases are separated and the resulting fat is obtained until neutral. Ammonium sulfate, as an electrolyte, alters the surface tension at the interface, reduces the emulsifying action of soaps and substances of a proteinic nature, and destroys the boundary layer of soap miscella, contributing to the release of refined fat. With a strong contamination of the original fat with protein substances (glue, gelatin, protein hydrolyzate) ammonium sulfate is used at a pH of 4.2-5.8, created by the addition of sulfuric acid. Under these conditions, complete destruction of the protein emulsion and prevention of its increase in refined fat is provided. If the optimal amount of ammonium sulphate is below the lower limits, the process temperature and the pH of the medium are above 5.8, the fat yield drops sharply due to the decrease in the effect of ammonium sulfate as an electrolyte, and when the upper limits of the parameters are removed, additional fat recovery does not occur, deteriorated by increasing acid number.

Example 1, 500 g of pure saponified animal fat from waste products containing 62.3% fat, 20.4% of fine suspended and soluble organic matter of protein nature and 17.3% of water is treated with 40, g of ammonium sulfate (8% by weight of fat , dissolved in 80 g of water, 0.4% of the fat content of concentrated sulfuric acid is added to the mixture to ensure a pH of 4.2. Then the mixture is stirred and heated to 96 ° C, after 30 minutes of settling, the mixture is divided into the upper layer of refined fat, the middle layer of finely dispersed suspended and water soluble proteins and the lower layer

An acidic solution of ammonium sulfate, which is discharged into the collection, is filtered, strengthened and reused as a reagent. The middle layer is drained into the sewage system, and the top layer of the refined fat is washed until neutral (pH 7.0) is collected in a collection and, after analysis, is packed in a container. The yield of fat and its physico-chemical indicators are given in the comparative table,

Example2. 500 g partially saponified original animal fat from

5 production wastes with a content of 71.6% fat, 6.9% protein substances and 21.5% water are treated with 40 g of ammonium sulfate dissolved in BO g of water at pH 5.4. The mixture was stirred and heated to 97 ° C. All subsequent operations were carried out as in Example 1.

Example 3. 500 g of partially saponified initial fat from waste

5 production with a content of 69.6% fat, 5.3% protein substances and 25.1% water is treated with 25 g of ammonium sulfate (5% by weight of fat) dissolved in 50 g of water, at pH 5.8,

Q The mixture is stirred and heated to 98 ° C.

Example4. 500 g of partly saponified original fat from production waste with a content of 65.7% fat, 12.9% of protein substances and 21.4% of water are treated with 32.5 g of ammonium sulfate (6.5% of the mass of fat) dissolved in 65 g of water. 0.24% by weight of fat is added to the mixture by the concentration of a bath of sulfuric acid to ensure a pH of 4.9. Then the mixture is stirred and heated to 97 C.

11 example5. 500 g of partly saponified original animal fat from Production wastes with a content of 65.7% fat, 12.9% of protein substances and 21.4% of water are treated with 45 g of ammonium sulfate (9% by weight of fat) dissolved in 90 g of water. . 0.5% by weight of the fat of concentrated sulfuric acid is added to the mixture to ensure a pH of 4.0. Then the mixture is stirred and heated to 100 ° C.

PRI me R 6. 500 g of partially battered raw animal fat from production waste with a content of 69.8% fat, 5.3% proteinaceous matter and 25.1% water is processed

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 1406147

20 g of ammonium sulphate (4% of the mass of the pH of the medium 4.2–5.8 and heating the fat mixture) dissolved in 40 g of water to 96-.98 позвол makes it possible to reduce losses at a pH of 6.0, the mixture is stirred and the target the product is unchanged at 94 ° C.

of honor.

Example 7. 500 g of partially saponified polluted pork fat with a content of 85.3% fat, 4.2% proteinaceous matter and 10.5% water are refined as in Example 1.

Claims (1)

Invention Formula The method of refining fats, including - 10 Creaturing reagent treatment, mixing, heating, separation of the phases and EXAMPLE 8: 500 g of partial washing of the grease, characterized by contaminated sunflower, so that, in order to reduce the oil containing 87.6% of the oil, the loss of the target product is 3.8 % of substances of protein nature and 8.6% 15 of the reagent use ammonium sulfate water refined as in example 4. in an amount of from 5 to 8% by weight of the flames The use of ra for refining, the treatment is carried out at a pH of the medium from fats, the treatment with ammonium sulfate is 4.2 to 5.8, and the heating is carried out in an amount of 5-8% by weight of fat to 96-98 C. pH up to 96 -98 target of honor. Invention Formula