SU1554869A1 - Method of producing barley flakes - Google Patents

Abstract

The invention relates to the milling industry, in particular to the production of flakes. The aim of the invention is to improve the quality of the finished product, increase its yield and reduce the duration of the process. For the production of barley flakes, the grain of barley is moistened to 21-25%, steam for 2-4 hours, steamed at a pressure of 0.5-1.0 atm for 30-60 seconds, dried with an air stream at 80-90 ° C until the moisture content of the grain is 18.5%, it is shelled, subjected to IR treatment at a radiant flux density of 26-28 kW / m ² for 15-20 seconds to a temperature inside the grain of 150-160 ° C, then conditioning is carried out. The method allows to increase the yield up to 85-92%, increase the nutritional value of the product by increasing the content of dextrins, water-soluble compounds, reducing the acidity, shorten the process time by 2 times, and reduce power consumption.

Description

The invention relates to the milling industry, in particular to the production of flakes.

The aim of the invention is to improve the quality of the finished product, increase its yield and reduce the duration of the process.

The method is carried out as follows.

The barley grain is moistened to 21-25%, steam for 2-4 hours, steamed at. pressure 0.5-1.0 MPa for 30-60 s, dried with an air jet at 80-90 ° C to a grain moisture of 18.5%, shelled, subjected to

treatment with infrared radiation at a radiant flux density of 2b-28 kW / m2 for 15-20 s until the temperature inside the grain reaches 150-160 ° C, then the wire-d t flattening.

The use of shortwave PC radiation allows intensive heating of the grain with a moisture content of 17–20% to 150–160CC. This allows the free moisture to evaporate with corresponding disruption of the grain structure and starch grains. There is a gelatinization of starch, its partial destruction to dextrins (up to 20-25%), the content of water-soluble increases.

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substances up to 15-17%. The acidity of the grain is reduced to 1.5-2.0. The flake yield is increased to 85-92% due to the increased plasticity of the grain and the starch glueing. Flakes have a small thickness, white color, a large specific surface. The use of infrared heating makes it possible to refuse to carry out the processes of grinding, moistening, soaking before flattening and drying the flakes after it, which reduces the process of obtaining flakes by 2 times.

Example 1. The barley grain is moistened to 23%, evaporated for 3 hours, steamed at a pressure of 0.75 atm for 45 seconds, dried with an air stream at 85 ° C to humid

These grains, 18.5%, are shelled, subjected to PC treatment with a radiant flux density of 26 kW / m2 for 15 s to reach a temperature inside the grain of 150 ° C, and then flatten.

The yield of flakes is 85%, the amount of dextrins is 20%, the content of water-soluble compounds is 15%, the acidity of the grain of the aqueous extract is 2.0 °.

PRI mme R 2. Grain pretreated according to example 1j is subjected to IR treatment with a radiant flux density of 28 kW / m2 for 20 s until the temperature inside the grain reaches 1bO ° C and then it is flattened.

The yield of flakes is 87%, the amount of dextrins is 27%, water-soluble compounds is 17.4%, the acidity of the aqueous extract is 1.5.

EXAMPLE 3. The husked barley grain, pretreated according to example 1, is subjected to IR treatment with a radiant flux density of 27 kW / m2 for 18 s to reach a temperature of 155 ° C and flatten.

The yield of flakes is 92%, the amount of dextrins is 25%, water-soluble compounds are 17.0%, the acidity of the water extract is 1.5e.

EXAMPLE 4. Grain pretreated in accordance with Example 1 is subjected to IR treatment with a radiant flux density of 24 kW / m2 for less than 15 s until temperature reaches less than 150 ° C by conditioning.

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The yield of flakes is 80%, the amount of dextrins does not exceed 10%, water content is 10

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The compounds are less than 8%, the acidity of vodka extract is more than 4.2 °.

II p and mep 5. The husked barley grain, pretreated according to example 1, is subjected to IR treatment with a radiant flux density of 30 kW / m2 for 22 s until the temperature reaches more than 1 ° C and then flattened.

The flakes yield is less than 78%, the amount of dextrins is up to 28%, water-soluble compounds is up to 17.6%, the acidity of the aqueous extract is 1.3 °.

Thus, when using the operating parameters of example 4, the yield of flakes decreases, the amount of dextrins and water-soluble compounds decreases, and the acidity of the aqueous extract increases. At the same time, the implementation of the method of Example 5 allows an increase in the amount of dextrins and water-soluble compounds while reducing the acidity of the aqueous extract, however, the yield of flakes is significantly reduced.

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The use of the proposed method in comparison with the known allows to increase the yield of flakes from 70-75 to 85-92%; increase the nutritional value of the product by increasing the amount of dextrins from 1.1-1.5 to 20-25%, water-soluble compounds from 1.5-2.0 to 15-17%, reducing the acidity of the aqueous extract from 6-7 to 1 , 5-2,0; reduce the duration of the process from 8 h 05 min to 4 h 02 min; reduce energy consumption from 180 to 140 kW / h.

Claims (1)

Invention Formula The method of production of barley flakes, including moistening the grain, sticking for 2-4 hours, steaming it at a vapor pressure of 0.5-1 atm for 30-60 s, drying with air at 80-90 ° C, peeling and conditioning, characterized in that, in order to improve the quality of the finished product, increase its yield and shorten the process time, the grain is subjected to infrared radiation treatment at a flux density of 26-28 kW / m2 for 15-20 seconds until the temperature inside the grain reaches 150-160 ° s