CS270967B1 - Method of food fibrous material production - Google Patents

Abstract

The solution concerns a method of food fibrous material production from sugar beet pulps. The said purpose is achieved by a way that the sugar beet pulps get freed from sugar residues and soluble salts by washing them in drinking water, and then a disinfection as well as whitening by hydrogen peroxide or persterile solutions or ozonisation, possibly only steam disinfection or irradiation is made. By the pressing and subsequent drying, the water is removed until the moisture content drops under 10 mass %. The food fibrous material enables the compensation of the fibrous material deficit in the current human alimentation.

Description

The invention relates to a process for the production of pulp for food use.

Fiber is an important component in human nutrition. In the course of the civilization process and changes in human nutrition, the dietary fiber content gradually decreased. Recently, it has been shown that the lack of a fibrous component in the diet is not only the cause of frequent digestive tract problems, but also the cause of some diseases. Lack of fiber in the diet should therefore be supplemented by an additional addition of specially made dietary fiber.

Fiber is to a greater or lesser extent present in all plants, but obtaining it in the desired concentrated form is either difficult or uneconomical. In addition, the fiber obtained must comply with food safety requirements.

One of the possible sources of fiber is sieved beet pulp containing up to 67% by weight. dietary fiber and up to 22 wt. % pectin substances, about 10 wt. protein. The high content of pectin substances present has a significant effect on the breakdown of fats and carbohydrates. reduces blood cholesterol.

However, the direct use of beet pulps is not possible as they contain large amounts of water, residual sugar, soluble salts and are easily subject to bacterial contamination. In addition, their coloration is in many cases unsatisfactory. It is therefore necessary to get rid of residual sugar, soluble salts, to remove any bacterial contamination, to disinfect, to pulp whitening and finally to remove excess moisture.

The prior art processes of US Pat. 4451489, the cuttings are mixed in 0.005-0.5M sodium metabisulphide solution to prevent further darkening, after washing with water and centrifugation, the coloring components and odor of 70 to 80% by volume of isopropanol are then removed. This process is economically demanding due to the use of isopropanol.

SUMMARY OF THE INVENTION The present invention is based on a process for producing food pulp from beet pulp as a starting material. The cuttings are washed with clean drinking water, freeing residual sugar and soluble salts, reducing microbial contamination and bleaching achieved by washing in 0.5 to 3.0 vol% hydrogen peroxide solution or 0.01 to 0.05 ¾ vol. persteril. Disinfection and discoloration can also be carried out by ozonation, separate disinfection can also be done by steam or by irradiation with a source of radiation. After disinfection with peroxide or persteril, the pulp is washed with clean drinking water. The mass thus obtained is freed of excess water by pressing and finally the mass is dried in an oven with hot air at a temperature of up to 200 ° C, the temperature in the dried layer not exceeding 110 ° C.

The main advantage of ingesting sugar beet pulps and the method according to the invention is that the sweetened pulps have a high fiber and pectin content, the proportion of which is corresponding to the final composition requirement in terms of fiber and pectin content. The method is very simple to manufacture while ensuring all hygienic and food requirements. An embodiment is shown in the following examples.

Example 1

Sieved beet pulps from the extractor containing max. 0.4% by weight of sucrose are washed for 30 minutes with triple (w / w) pure water containing 0.05% by volume of persteril. The water from the cuttings is ground and then the cuttings are freed of excess water by pressing. The cuttings are again washed for 30 minutes with water at 150% by volume by milling and pressing to a dry matter content of 22% by weight, and so that the temperature in the dried layer is below 110% moisture content below 10% by weight.

Example 2

Scented beet wood containing 3 water by pressing.

cuttings. The mass is freed of excess water and subsequently dried in a hot-air oven at a temperature of 200 ° C until the pulps from the extractor are mixed with 3 times the amount of pure pure hydrogen peroxide by volume. After 30 minutes, the water is allowed to settle and the mass is freed from the product. Drying is carried out with hot air at 60 ° C.

Example 3

The sieved beet pulps from the extractor are mixed with 3 times the amount of pure water, the water-pulp mixture enters the ozonization unit where it is saturated with ozone in an amount of 10 g of ozone per liter of the mixture for 15 minutes. Then the excess water is drained and the mass is further compressed to dry matter min. 22% by weight, and then dried with hot air at 150 ° C.

Example 4

The sieved beet pulps from the extractor are mixed with a factor of 5 by weight pure water, the water-pulp mixture is sieved and the mass is steam-sterilized at 130 ° C. The mass is further compressed to dry matter of 22 ¾ mass and subsequently dried with hot air at a temperature of 90 ° C.

Example 5

The sieved beet pulps from the extractor are mixed with 3 times the weight of pure water. After 30 minutes the excess water is decanted and the mass is subsequently pressed to remove water for min. dry matter 22 wt. Drying is carried out with hot air at 130 ° C. The finished product is irradiated with Co radiation at a dose of 4kGy.

Claims (6)

SUBJECT OF THE INVENTION Process for producing food pulp from clarified beet pulps, characterized in that the clarified beet pulps are washed with pure water, the microbial contamination is removed by disinfection with hydrogen peroxide, persteril or ozonization with simultaneous bleaching or steam or radiation without bleaching effect. The mixture is washed with pure water, the mass is compressed and dried in an oven at 60 to 200 ° C with a maximum layer temperature of 110 ° C, whereby the moisture content is reduced to below 10% by weight of dry matter. 2. A method according to claim 1, wherein the disinfection to remove microbial contamination and the bleaching of the pulp is carried out with a solution of hydrogen peroxide at a concentration of 0.5 to 3.0% by volume. 3. The method according to claim 1, wherein the disinfection to remove microbial contamination and bleaching of the pulp is carried out with a solution of persteril at a concentration of 0.01 to 0.05% by volume. 4. A method according to claim 1, characterized in that disinfection to remove microbial contamination and bleaching of the pulp is carried out by ozonation, i.e. by ozone in an amount of 5 to 15 g of ozone per liter of water-pulp mixture. * Method according to claim 1, characterized in that the disinfection to remove the microbial contamination is carried out after washing the cuttings with steam, i.e. by the action of steam at a temperature of 110 to 130 ° C. 6. The method of claim 1, wherein the disinfection to remove the microbial contamination is carried out on the dried mass by a radiation of ⁶⁰ Co at a dose of 2 to 4 kGy.