WO2020073350A1

WO2020073350A1 - Processing technology of barley malt

Info

Publication number: WO2020073350A1
Application number: PCT/CN2018/110786
Authority: WO
Inventors: 徐根弟
Original assignee: 徐根弟
Priority date: 2018-10-13
Filing date: 2018-10-18
Publication date: 2020-04-16
Also published as: CN109055065A

Abstract

A processing technology of barley malt, comprising the following steps: (1) processing raw materials; (2) soaking barley malt; (3) germinating; (4) drying; (5) grubbing. A mixture of 6-phytase and xylanase is added in the barley malt soaking step, and sodium selenite is added in the germinating step. Barley malt with wort turbidity below 1.5 EBC, breakage rate below 0.5%, and selenium content above 28 μg/kg is obtained by the steps. The technology is simple in processes and suitable for mass production, and the obtained barely malt has less inclusions, and is uniform in length, high in component consistency and low in turbidity, thereby improving the quality of the barley malt and reducing production costs; the barely malt is particularly applicable to raw materials for producing beer.

Description

Processing technology of barley malt

Technical field

The invention belongs to the technical field of deep processing of crops, and specifically relates to a processing technology of barley malt.

Background technique

Barley malt is obtained by germinating and drying the mature fruit of barley. It is a major barley processed product and an essential raw material for making beer.

As we all know, beer malt has high quality requirements. Not only does it have a strict length for the leaf bud length, it should not exceed 80% of the grain, but also requires ultra-low inclusions, high cell lysis uniformity, suitable protein content, and malt color and PH meet the requirements. Therefore, the production of beer malt is very delicate, and each step has strict quality requirements, such as dipping method, temperature control, etc. More importantly, there are more stringent requirements on malt turbidity. The wort made from malt has a high turbidity because it contains a large amount of fatty acids, cellulose, hemicellulose, and high molecular nitrogen. During the fermentation stage, yeast is in such a turbid wort, and it is very prone to bacterial degradation. After the pressure increase, the number of yeast will be significantly reduced, the reduction of diacetyl reduction, and the age of the wine will be prolonged, which will have a very bad effect on beer brewing. The main reason for producing these turbid substances is that the quality of barley raw materials varies greatly, and the current wheat-making process is mainly a workshop-style operation. The quality of barley malt is not high, the output is low, the cost is low, and trace elements are also lost.

Summary of the invention

The purpose of the present invention is to provide a processing technology for barley malt which has the problems of high malt content, high wort turbidity, low pass rate, complicated procedures, and high cost in the existing wheat-making process. The process is simple, It is suitable for mass production, and it has few malt inclusions, uniform length, containing trace elements such as selenium, high nutritional content, low malt wort turbidity, and good quality.

In order to achieve the above object, the technical solution provided by the present invention is: a processing technology of barley malt, including the following steps:

(1) Raw material processing: The raw material barley is sent to the air separation vibrating screen with a bucket elevator, passes through the stone remover, classifier, electronic scale, and enters the selected barley silo. The barley selection uses the selected machine and is equipped with a pulse type The bag dust collector is used, the content of the processed barley inclusions is within 0.2%, and the classification degree of the barley reaches more than 95%;

(2) Wheat immersion: adopt the tower type germination process, adopt six horizontal and parallel arrangement cone-shaped wheat immersion tanks placed on the uppermost layer of the tower, each wheat immersion tank is equipped with a fan and a carbon dioxide suction fan respectively. ) The processed raw barley is carried out in accordance with the steps of blasting, spraying, floating wheat, and pumping carbon dioxide. Before invading and spraying, add 3-5% phytase and 3-phytase to the barley to the total weight of the barley. The mixture of xylanase has a immersion degree of 42-48% and a dew point rate of 71-82%;

(3) Germination: 4 germination boxes are placed in the lower layer of the wheat immersion tank, the barley after impregnation in step (2) is transported layer by layer to the germination box, then flattened with a combination machine, and the wheat is turned every 8 hours , Spray twice at the 10th and 40th hours of germination. Before germination and spraying, add 0.005-0.015% sodium selenite to the barley, the germination time should be controlled at 70 ～ 100 hour;

(4) Drying: The green malt germinated in step (3) is moved to the germination tower through the unloader, belt conveyor, bucket elevator, and sent to the drying box. The green malt goes through the withering, drying and coking stage, and finally dried When the moisture content is ≤5%, the drying time is controlled at 20-23 hours;

(5) Root removal: The malt after the drying in step (4) is sent to the dry malt temporary storage silo through the bucket elevator, and then the root is removed by the root removal machine, and then entered into the malt silo with the bucket elevator, and the malt is removed from the warehouse The material system is sent to the air separation vibrating screen and packed after measurement.

As a preferred technical solution, the row of floating wheat in the step (2) adopts water suction overflow to remove floating wheat.

As a preferred technical solution, the step (2) is provided with a wheat soaking temperature regulating water tank, and the temperature of the wheat soaking water is adjusted at 13-18 ° C.

As a preferred technical solution, the mass ratio of 6-phytase and xylanase in the mixture of 6-phytase and xylanase in the step (2) is 1: 1, and the 6-plant The mixture of acidase and xylanase is first made into an aqueous solution with a mass concentration of 10%, and then added uniformly by spraying.

As a preferred technical solution, the sodium selenite in the step (3) is first made into an aqueous solution with a mass concentration of 1%, and then evenly distributed to the two germination sprays and added evenly by spraying.

As a preferred technical solution, when turning wheat in the step (3), water should be sprayed according to the growth of malt, and gibberellic acid should be added at 0.5-1% of the total weight of the barley.

As a preferred technical solution, the cooling of the germination surface cooler in the step (3) is directly cooled by an ammonia pump, and a humidifying device and a hot water pipe spraying device are provided under the bed.

As a preferred technical solution, the step (4) drying uses steam indirect heating, and the drying temperature is 45-85 ° C.

The beneficial effects of the present invention are: the process adopts an improved tower germination process, and at the same time, a mixed enzyme of 6-phytase and xylanase is added to the wheat steeping process to promote the dissolution and separation of intercalation, and is added in the early stage of germination Sodium selenite solution, so that the wort turbidity is below 1.5EBC, the breakage rate is below 0.5%, the malt selenium content is above 28μg / ㎏, the process is simple, suitable for batch production, the malt length is uniform, and the composition consistency is high , High nutritional value, especially suitable for the production of beer raw materials.

BRIEF DESCRIPTION

Figure 1 is a process flow diagram of the present invention.

detailed description

The present invention will be described in detail below through specific embodiments with reference to the drawings.

As shown in FIG. 1, the process flow of the present invention can be divided into five processes: raw material processing, wheat making, dry oven drying, rooting machine rooting, packaging, and storage. The following examples only deal with raw material processing The processes of wheat making, drying in a drying oven, and root removing machine are described in detail.

Example 1

(1) Raw material processing:

Send the raw material barley with bucket elevator (model TD500) to the air separation vibrating screen (TQLZ180x200), pass the stone remover (QSX-168 specific gravity stone remover), classifier (flat plate classifier 0510), electronic scale, enter Selected barley silo, barley selection using a selection machine (grain separator), and equipped with a set of pulse bag filter (model ZC-90), the content of selected barley inclusions within 0.2%, barley The grading degree is above 95%, the raw material processing capacity is 100t / h, the barley is carefully selected, and the storage capacity is 300 tons per hour;

(2) Dipping wheat:

①Using the tower germination process, the cone bottom dipping tank (180m ³ ) and the germination box are placed in the germination tower. The dipping tank and the germination box are arranged above and below, and there is a tower transportation between the dipping tank and the germination box The pipeline relies on gravity to run the barley. The wheat immersion tank uses 180m ³ of the wheat immersion tank. 6 horizontal and parallel layouts. The wheat immersion tank is made of stainless steel. The bottom of the wheat immersion tank cone is equipped with an opening for cleaning the false bottom for cleaning and sanitation. 1 1 ventilator for wheat immersion tank (using water circulation air compressor to reduce the temperature of the air), each immersion tank is equipped with a CO ₂ suction fan, and the floating wheat is removed by water suction to remove the floating wheat. It is equipped with a wheat soaking temperature regulating water tank to ensure that the wheat soaking water temperature can be adjusted in winter and summer to the temperature range required by the process in 13 ～ 18 ℃;

②The barley processed in step (1) is subjected to the integrated wheat immersion method of water immersion, blasting and CO ₂ extraction. The whole wheat immersion process is carried out according to the process of immersing three times and breaking four times. The process is controlled by four processes: timed air blowing, spraying, floating wheat, and CO ₂ suction. During the spraying process of wheat soaking, first add 6% phytase and 3% of the total weight of barley to the barley with a sprayer. The mixture of xylanase, the mixture of 6-phytase and xylanase in the mixture of 6-phytase and xylanase has a mass ratio of 1: 1, 6-phytase and xylanase The mixture is first prepared into an aqueous solution with a mass concentration of 10%, and the wheat is soaked for 20 hours, the barley soaking degree obtained is 42%, and the dew point rate is 72%;

(3) Germination:

①The germination adopts 4 germination boxes, and the germination box with a diameter of 29 meters is selected. Each germination box is independent. The germination room adopts independent air conditioning system, that is, each has its own ventilation, cooling and return air. The germination fan is equipped with a frequency converter and a sieve plate It is made of stainless steel, the structure is flat screen surface and bottom frame, and the germination surface cooler is cooled by ammonia pump directly. There is a humidifier and hot water pipe spray device under the bed to increase the air temperature and humidity when the temperature is low in winter , During the germination process, the temperature is controlled at 12-16 ℃, the humidity is 92-96%;

②The impregnated barley obtained in step (2) is transported layer by layer to 4 germination boxes, then paved with a combination machine (ZP-90), and turned over with a wheat turning machine (ZFM7.0 * 2.0) every 8 hours Once, to ensure that the temperature difference between the upper and lower layers reaches 3-4 ℃, spray them with water once at the 10th and 40th hours of germination, and divide the aqueous solution of sodium selenite formulated into a mass concentration of 1% into two parts first. Spray with a sprayer before germination and spray, the total amount of sodium selenite is 0.005% of the total weight of barley, then spray with water, add 0.5% gibberellic acid to the total weight of the barley in the spray water, and control the germination time at 70 hours;

(4) Drying:

The germinated green malt obtained in step (3) is moved to the germination tower through a double pear point multi-point unloading belt conveyor and a bucket elevator, and sent to a drying box (GFG-20). The green malt is withered and dried 3. In the coking stage, the final drying is to a moisture content of 5% or less. The entire drying process can adjust the steam flow according to the temperature and air volume of the drying chamber, and can also adjust the return air volume according to the outdoor temperature and process requirements in different stages to save energy and eliminate moisture. The period air volume is 4000-4500 cubic meters per ton of green malt. The drying time is controlled at 20 hours (including auxiliary time). It is completed by a Φ42m round drying furnace (GFG-20). Drying adopts indirect steam heating method, withered layer Drying temperature control 45-68 ℃, time 16-18 hours, baking coke layer temperature control 65-85 ℃, time 2-4 hours, equipped with waste heat recovery device in the drying furnace, waste heat recovery tube adopts aluminum alloy tube, drying furnace Equipped with 4 blowers (L52WD), equipped with frequency converter, to automatically control the power on and off according to the temperature;

(5) Eradication:

After the step (4) drying the malt, fresh air is used to cool the wheat layer to 40-45 ° C, and then it is sent to a dry malt temporary storage silo through a bucket elevator, and then passes through two de-rooting machines (model CG-15 ) Root removal, processing capacity is 40t / h, measurement after root removal, bucket elevator enters the malt silo, the malt out of the warehouse is sent to the air separation vibrating screen through the batching system, and is automatically packaged through the electronic weighing scale. The root removal system is equipped with 1 set of pulses Bag dust collector.

The malt obtained was tested, the wort turbidity was 1.4EBC, the breakage rate was below 0.5%, and the selenium content was 28 μg / ㎏.

Example 2

(1) Raw material processing:

(2) Dipping wheat:

①Using the tower germination process, the cone bottom dipping tank (180m ³ ) and the germination box are placed in the germination tower. The dipping tank and the germination box are arranged above and below, and there is a tower transportation between the dipping tank and the germination box The pipeline relies on gravity to run the barley. The wheat immersion tank uses 180m ³ of the wheat immersion tank. 6 horizontal and parallel layouts. The wheat immersion tank is made of stainless steel. The bottom of the wheat immersion tank cone is equipped with an opening for cleaning the false bottom for cleaning and sanitation. 1 1 ventilator for wheat immersion tank (using water circulation air compressor to reduce the temperature of the air), each immersion tank is equipped with a CO ₂ suction fan, and the floating wheat is removed by water suction to remove the floating wheat. Set the temperature control tank for soaking wheat to ensure that the temperature of soaking wheat can be adjusted to the temperature range of 13 ～ 18 ℃ in winter and summer;

②The barley processed in step (1) is subjected to the integrated wheat immersion method of water immersion, blasting and CO ₂ extraction. The whole wheat immersion process is carried out according to the process of immersing three times and breaking four times. The process is controlled by four processes: timed air blowing, spraying, floating wheat, and CO ₂ suction. During the spraying process, the 6-phytase and 4% of the total weight of barley are added to the barley with a sprayer. The mixture of xylanase, the mixture of 6-phytase and xylanase in the mixture of 6-phytase and xylanase has a mass ratio of 1: 1, 6-phytase and xylanase The mixture is first formulated into an aqueous solution with a mass concentration of 10%, soaked in wheat for 21 hours, the barley soaking degree obtained is 48%, and the dew point rate is 82%;

(3) Germination:

①The germination adopts 4 germination boxes, and the germination box with a diameter of 29 meters is selected, each germination box is independent, and an independent air conditioning system is used in the germination room, that is, each has its own ventilation, cooling and return air, and the germination fan is equipped with a frequency converter to achieve effective Control process parameters while saving electrical energy. The sieve plate is made of stainless steel. The structure is a flat screen surface with a bottom frame. The germination surface cooler is cooled directly by an ammonia pump. There is a humidification device and a hot water pipe spray device under the bed. Increase the air temperature and humidity when the temperature is low in winter, and control the temperature at 12-16 ° C and the humidity at 92-96% during the germination process;

②The impregnated barley obtained in step (2) is transported layer by layer to 4 germination boxes, then paved with a combination machine (ZP-90), and turned over with a wheat turning machine (ZFM7.0 * 2.0) every 8 hours Once, to ensure that the temperature difference between the upper and lower layers reaches 3-4 ℃, spray them with water once at the 10th and 40th hours of germination, and divide the aqueous solution of sodium selenite formulated into a mass concentration of 1% into two parts first. Before spraying, spray with a sprayer, the total amount of sodium selenite is 0.010% of the total weight of barley, then spray with water, add gibberellic acid 0.75% of the total weight of the barley in the spraying water, and control the germination time at 85 hours;

(4) Drying:

The germinated green malt obtained in step (3) is moved to the germination tower through a double pear point multi-point unloading belt conveyor and a bucket elevator, and sent to a drying box (GFG-20). The green malt is withered and dried 3. In the coking stage, the final drying is to a moisture content of 5% or less. The entire drying process can adjust the steam flow according to the temperature and air volume of the drying chamber, and can also adjust the return air volume according to the outdoor temperature and process requirements in different stages to save energy and eliminate moisture. The period air volume is 4000-4500 cubic meters per ton of green malt. The drying time is controlled at 22 hours (including auxiliary time). It is completed by a Φ42m circular drying furnace (GFG-20). The drying uses steam indirect heating and the withered layer Drying temperature control 45-68 ℃, time 16-18 hours, baking coke layer temperature control 65-85 ℃, time 2-4 hours, equipped with waste heat recovery device in the drying furnace, waste heat recovery tube adopts aluminum alloy tube, drying furnace Equipped with 4 blowers (L52WD), equipped with frequency converter, to automatically control the power on and off according to the temperature;

(5) Eradication:

The malt obtained was tested, the wort turbidity was 1.2EBC, the breakage rate was below 0.5%, and the selenium content was 30 μg / ㎏.

Example 3

(1) Raw material processing:

(2) Dipping wheat:

②The barley processed in step (1) is subjected to the integrated wheat immersion method of water immersion, blasting and CO ₂ extraction. The whole wheat immersion process is carried out according to the process of immersing three times and breaking four times. The process is controlled by four processes: regular air blowing, spraying, floating wheat, and CO ₂ suction. During the spraying process of wheat soaking, first add 6-phytase and phytase, which account for 5% of the total weight of the barley, to the barley with a sprayer The mixture of xylanase, the mixture of 6-phytase and xylanase in the mixture of 6-phytase and xylanase has a mass ratio of 1: 1, 6-phytase and xylanase The mixture was first formulated into an aqueous solution with a mass concentration of 10%, soaked in wheat for 22 hours, the barley soaking degree obtained was 46%, and the dew point rate was 78%;

(3) Germination:

②The impregnated barley obtained in step (2) is transported layer by layer to 4 germination boxes, then paved with a combination machine (ZP-90), and turned over with a wheat turning machine (ZFM7.0 * 2.0) every 8 hours Once, to ensure that the temperature difference between the upper and lower layers reaches 3-4 ℃, spray them with water once at the 10th and 40th hours of germination, and divide the aqueous solution of sodium selenite formulated into a mass concentration of 1% into two parts first. Before spraying, spray with a sprayer. The total amount of sodium selenite is 0.015% of the total weight of barley. Then spray with water. Add 1% of gibberellic acid to the total weight of barley in the spraying water, and control the germination time at 100 hours;

(4) Drying:

The germinated green malt obtained in step (3) is moved to the germination tower through a double pear point multi-point unloading belt conveyor and a bucket elevator, and sent to a drying box (GFG-20). The green malt is withered and dried 3. In the coking stage, the final drying is to a moisture content of 5% or less. The entire drying process can adjust the steam flow according to the temperature and air volume of the drying chamber, and can also adjust the return air volume according to the outdoor temperature and process requirements in different stages to save energy and eliminate moisture. The period of air volume is 4000-4500 cubic meters / ton of green malt. The drying time is controlled at 23 hours (including auxiliary time). It is completed by a Φ42m circular drying furnace (GFG-20). Drying adopts steam indirect heating method, withered layer Drying temperature control 45-68 ℃, time 16-18 hours, baking coke layer temperature control 65-85 ℃, time 2-4 hours, equipped with waste heat recovery device in the drying furnace, waste heat recovery tube adopts aluminum alloy tube, drying furnace Equipped with 4 blowers (L52WD), equipped with frequency converter, to automatically control the power on and off according to the temperature;

(5) Eradication:

After the step (4) drying the malt, fresh air is used to cool the wheat layer to 40-45 ° C, and then it is sent to a dry malt temporary storage silo through a bucket elevator, and then passes through two de-rooting machines (model CG-15 ) Root removal, processing capacity is 40t / h, measurement after root removal, bucket elevator enters the malt silo, the malt out of the warehouse is sent to the air separation vibrating screen through the batching system, and is automatically packaged through the electronic weighing scale. Bag dust collector.

The malt obtained was tested, the wort turbidity was 1.3EBC, the breakage rate was below 0.5%, and the selenium content was 31 μg / ㎏.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection of the present invention Within range.

Claims

A processing technology of barley malt includes the following steps:

(1) Raw material processing: The raw material barley is sent to the air separation vibrating screen with a bucket elevator, passes through the stone remover, classifier, electronic scale, and enters the selected barley silo. The barley selection uses the selected machine and is equipped with a pulse type The bag dust collector is used, the content of the processed barley inclusions is within 0.2%, and the classification degree of the barley reaches more than 95%;

(2) Wheat immersion: adopt the tower type germination process, adopt six horizontal and parallel arrangement cone-shaped wheat immersion tanks placed on the uppermost layer of the tower, each wheat immersion tank is equipped with a fan and a carbon dioxide suction fan respectively. ) The processed raw barley is carried out in accordance with the steps of blasting, spraying, floating wheat, and pumping carbon dioxide. Before invading and spraying, add 3-5% phytase and 3-phytase to the barley to the total weight of the barley. The mixture of xylanase has a immersion degree of 42-48% and a dew point rate of 71-82%;

(3) Germination: 4 germination boxes are placed in the lower layer of the wheat immersion tank, the barley after impregnation in step (2) is transported layer by layer to the germination box, then flattened with a combination machine, and the wheat is turned every 8 hours , Spray twice at the 10th and 40th hours of germination. Before germination and spraying, add 0.005-0.015% sodium selenite to the barley, the germination time should be controlled at 70 ～ 100 hour;

(4) Drying: The green malt germinated in step (3) is moved to the germination tower through the unloader, belt conveyor, bucket elevator, and sent to the drying box. The green malt goes through the withering, drying and coking stage, and finally dried When the moisture content is ≤5%, the drying time is controlled at 20-23 hours;

(5) Root removal: The malt after the drying in step (4) is sent to the dry malt temporary storage silo through the bucket elevator, and then the root is removed by the root removal machine, and then entered into the malt silo with the bucket elevator, and the malt is removed from the warehouse The material system is sent to the air separation vibrating screen and packed after measurement.
The processing technology of barley malt according to claim 1, characterized in that: in the step (2), the row of floating wheat adopts water suction overflow to remove the floating wheat.
The processing technology for barley malt according to claim 1, wherein the step (2) is provided with a wheat-soaking temperature-regulating water tank to adjust the temperature of the wheat-soaking water at 13-18 ° C.
The processing technology of barley malt according to claim 1, characterized in that: the quality of 6-phytase and xylanase in the mixture of 6-phytase and xylanase in the step (2) The portion ratio is 1: 1. The mixture of 6-phytase and xylanase is first made into an aqueous solution with a mass concentration of 10%, and then added uniformly by spraying.
The processing technology of barley malt according to claim 1, characterized in that: in the step (3), the sodium selenite is first made into an aqueous solution with a mass concentration of 1%, and then evenly distributed to two germinations Before spraying, add evenly by spraying.
The processing technology of barley malt according to claim 1, characterized in that: in the step (3), when turning the wheat, water spray should be added according to the growth status of the malt, and 0.5-1% of the total weight of barley is added acid.
The processing technology of barley malt according to claim 1, characterized in that: in step (3), the cooling of the germination surface cooler is directly supplied by an ammonia pump, and a humidifying device and a hot water pipe spray are provided under the bed淋装置。 Shower device.
The processing technology of barley malt according to claim 1, characterized in that: the step (4) drying adopts steam indirect heating, and the drying temperature is 45-85 ° C.