JP2009247275A - Method for peeling husk of bean - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for peeling the husks of beans by which the husks are removed from beans in a short time to simultaneously classify the beans into flesh and husks, and the flesh is collected while having an entire shape without being scraped at all. <P>SOLUTION: The method for peeling the husks of beans comprises: irradiating the beans with far-infrared ray to dry the beans; and bringing the dried beans come into contact to water in a short time to swell the husk parts followed by physically removing the swollen husk parts. Specifically, the beans are irradiated with far-infrared ray at the inside temperature of 30-60°C for 1-24 h to be dried, the dried beans are brought into contact to water for 3-60 min to swell the husk parts, and thereafter the swollen husk parts are physically removed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for peeling a bean skin, and particularly to a method for peeling a bean skin extremely easily and completely. Then, the invention provides an invention in which the peel of the beans is peeled off in a short time, and the peeled skin and the skin can be separated at the same time, and the peeled skin is not scraped at all and is recovered in a complete form.

Conventionally, when beans and other beans are processed and provided as foods, it is often the case that only the peeled skin is used.
Various methods have been proposed as the molting method.
For example, Patent Document 1 discloses a technique for manufacturing peeled soybeans by applying soybeans to the twisted blades of a rotating impeller so that the soybeans are scattered and stirred, and the soybeans are peeled off by the collision. Are listed.
Further, Patent Document 2 discloses that a rotating disc having a plurality of bars standing upright and having a step on the upper surface, and a cylindrical molting tank having an uneven surface and a granular grindstone surface on the inner surface, There is described a garlic stripping device in which a hollow body is provided with driving means for rotationally driving a rotating disc in a cylindrical molting tank.

JP-A-11-225726 JP 2002-65233 A

  However, in patent document 1, the structure is the same as that of a mixer, Furthermore, since there is a blade edge | tip, there exists a problem that the body of beans is easy to be broken. Since more than 90% are peeled soybeans with round grains, 10% are crumbled. Since the body and the skin are not separated, there is a problem that they are mixed in the container and the beans and the skin are separated in a separate process.

  In Patent Document 2, a round bar is erected and works to break up lumps of lumps into small pieces, and there is no concept for peeling the skin. When spherical or ellipsoidal beans are processed, the beans are small in size and have a problem that they do not peel off while being rubbed against each other because they are thick and strong. Also, unlike the garlic pieces, the shape has the disadvantage that not only the skin but also the body is scraped by contacting the concave and convex upper surface, which is the inner surface of the inner molting tank of the cylindrical molting tank, and the granular grindstone surface is there. Furthermore, since it is not in the state immersed in water, if agitation is strengthened, in the case of beans, there is a problem that the body is broken.

The present invention solves the problems related to the molting of the beans by the following method.
(1) In the method for peeling the peel of beans, the beans are dried by irradiating far infrared rays, and then the dried skin is contacted with water for a short time to swell the skin, and then the swollen skin is physically removed. A method for exfoliating a bean skin, characterized by exfoliating.
(2) In the method of peeling the peel of beans, the beans are dried by irradiating them with far-infrared rays for 0.5 hours or more, and then the dried product is brought into contact with water for 5 minutes or more to swell the skin, and then swell A method for exfoliating a bean skin characterized by physically exfoliating the peeled skin.
(3) In the method of peeling the peel of beans, the beans are dried by irradiating them with far-infrared rays for 1 to 24 hours at an internal temperature of 30 to 60 ° C., and then the water is contacted with water for 3 to 60 minutes. A method of peeling the peel of beans, wherein the swollen skin part is physically peeled off after the part is swollen.
(4) In the method of peeling the peel of beans, the beans are dried by irradiating them with far-infrared rays for 1 to 8 hours at an internal temperature of 35 to 55 ° C., and then the water is contacted with water for 5 to 20 minutes. A method of peeling the peel of beans, wherein the swollen skin part is physically peeled off after the part is swollen.
(5) The method according to any one of claims 1 to 3, wherein the method of bringing water into contact with the dried beans is a method of immersing beans in water or a method of spraying water on beans. A method for peeling the peel of beans.
(6) The method of physically exfoliating the swollen skin is a method in which a solid molded body is brought into contact with beans that have been subjected to a far-infrared drying treatment soaked in water, and a far-infrared drying treatment that has been soaked in water. A method of taking out beans and radiating pressurized water or pressurized air to them,
(7) The method for exfoliating the peel of beans according to any one of claims 1 to 6, wherein the beans are any one of soybeans and black beans.

  According to the present invention, it is possible to easily and completely carry out molting of beans with a simple method and a very short working time, and it is possible to simplify the equipment required for molting beans and to greatly reduce the operation cost. it can. Furthermore, alteration and swelling of the beans main body separated by molting can be avoided.

The inventor of the present application has been studying far-infrared drying technology for many years, soaking the far-infrared dried soybeans in water causes the skin to swell and crack in the skin in a very short time, resulting in extremely weak physical strength. It was discovered that the skin could be easily peeled off simply by adding.
The present invention has been made based on this discovery.
In carrying out the invention of the present application, beans such as soybeans are thinly loaded on a breathable mounting table such as a wire net or sudare and irradiated with far-infrared rays at a low temperature, for example, at a low temperature of about room temperature to 60 ° C. Dry the beans.
Next, water is brought into contact with the obtained far-infrared dried beans for a short time. Thereafter, a weak physical force is applied to the surface of the beans that have absorbed water and the skin has swelled. Then, a skin part will peel easily from the real part of a bean.
Therefore, the peeled skin can be removed by floating in a water stream, or can be easily removed by wind power sorting means.

The far-infrared drying apparatus suitably used for drying the beans of the present invention will be described. FIGS. 1-3 is an example of the drying equipment equipment for drying the beans of this invention.
This drying apparatus includes a drying room 2 and a carry-in room 3 in a one-story building 1. An entrance 4 about 2/3 of the building 1 is provided in the center of the front of the building 1, and a room that enters from the entrance 4 is a carry-in chamber 3. The inlet 4 is opened and closed by a shutter 5. A partition wall 13 is provided behind the entrance, and a second entrance 6 having a height of about 2/3 of the building 1 is provided in the center of the partition wall 13. The back room which entered from the second entrance 6 is the drying room 2. FIG. 3 is a cross-sectional view of the drying chamber 2 and is a view of the back side of the drying chamber 2 as viewed from the front. The second inlet 6 is also opened and closed by the shutter 7.

A convection heater 8 with a fan of the type heated by heated air is attached to the upper part on both sides of the partition wall 13. For example, the convection heater 8 can send heated air having a temperature of about 101.76 ° C. to 132.87 ° C. from the carry-in chamber 3 side to the drying chamber 2 by a fan.
A large number of wall-mounted ceramic far infrared radiation heaters 10 are attached to the wall of the drying chamber 2. As this heat radiation type heater 10, a far infrared heater is most suitable.
A large number of the heat radiation heaters 10 are installed at appropriate intervals on the wall of the drying chamber.
Two beams are installed near the ceiling in the center of the drying chamber 2, specifically about 2/3 the height of the drying chamber 2 from the entrance 6 side to the back. Three circulation fans 12 are provided side by side. The circulation fan 12 blows air from the ceiling side of the drying chamber 2 toward the floor to circulate the air in the drying chamber 2.
Further, exhaust fans 9 are provided at the upper portions on both sides of the back wall of the drying chamber 2. The exhaust fan 9 forcibly exhausts the air in the drying chamber 2.

  The beans to be dried are arranged on a cocoon candy etc., and the cocoon cocoons are placed on the carriage 11 at intervals in the vertical direction. The shutter 4 of the carry-in chamber 3 is opened and the carriage 11 is introduced into the carry-in chamber 3 from the inlet 4, and then the shutter 6 of the drying chamber 2 is opened and the carriage 11 is introduced from the inlet 6 into the drying chamber 2. When the atmosphere in the drying chamber 2 is in a heated state, the first opening 4 shutter 5 and the second inlet 6 shutter 7 are opened at different times so as not to release heat. The inlet 4 and the second inlet 6 are opened and closed. Thereafter, after the person leaves the drying chamber 2, the second inlet 6 is closed by the shutter 7, and the drying operation is started.

  In the drying chamber 2, the air in the drying chamber 2 is exhausted by the exhaust fan 9, and the interior of the drying chamber 2 is maintained at a slight negative pressure from the entrance 6 closed by the shutter 7 and a slight gap between the walls of the building 1. The temperature in the drying chamber 2 is heated by the thermal radiation heater 10 while introducing the outside air. As a result, moisture contained in the beans placed on the carriage 11 is evaporated, and this steam is exhausted from the drying chamber 2 by the exhaust fan 9. Then, the beans are dried while controlling the temperature in the drying chamber 2 by the on / off control of the heat radiation heater 10. The temperature in the drying chamber 2 is maintained at 30 to 60 ° C.

Using such a drying device, the beans arranged in the cocoon on the cart are dried.
The beans are dried while the inside of the drying chamber 2 is maintained at a temperature of about 30 to 60 ° C. by the thermal radiation heater 10 and the inside of the drying chamber 2 is ventilated by the operation of the exhaust fan 9. Thereby, the beans containing moisture are dried and dehydrated to the limit range. The term “dehydration to the limit” as used herein refers to dehydration by drying or dehydration until there is no more water to evaporate. This means that the amount of moisture that evaporates by drying and dehydration is eliminated, so that even if drying continues further, the weight of beans is not reduced by dehydration of beans. In this state, the moisture content of beans is considered to be almost zero. I can do it.

The performance of the heat source used is 24 KW / hour for the far-infrared heater which is the heat radiation heater 10.
As apparent from Table 1 above, soybeans are dehydrated to the limit by drying in about 4 hours from the start of drying. This state is set to moisture content (air-drying)% = 0.

Then, the soybean is taken out of the building from the drying room and naturally cooled to room temperature. By this drying step, the moisture contained in the soybean is almost eliminated.
Next, the obtained far infrared dried soybean is immersed in water for a short time. As a result, the far-infrared dried soybeans immediately swell when the skin part absorbs water, and after a large number of ridges are first formed on the surface, the surface layer swells and large crack lines appear on the skin part. During this time, it is about 1 to 10 minutes.
At that stage, the skin is easily peeled off simply by applying a weak physical force to the soybean surface.

Soybeans are placed on a bamboo shoot at a height of about 2 cm, and the far infrared drying device (
It put in "HOKKUDEN Taiyo KP-2" (Hokuetsu Electric Co., Ltd. far-infrared food drying machine), and dried for 0.5 to 24 hours at 35-55 degreeC inside temperature. As a result, dried soybeans having a moisture content of 0 to 5% (however, the calculated moisture content when the moisture content when the soybeans were dehydrated to the limit range was 0%) were obtained.
The obtained far infrared dried soybean was immersed in water for 5 to 20 minutes, and the state of the skin was observed.
In addition, in the dryer, soybean is placed at a height of about 2 cm on a bamboo shoot and heated only by a convection heater with a fan that is heated by heated air, for 30 minutes to 3 hours at 45 to 70 ° C. The dried and dried soybeans were immersed in water for 5 minutes to 17 hours, and the state of the skin was observed.
It is obtained by turning on the far infrared radiation ceramic heater 10 and maintaining the inside of the drying chamber 2 at a temperature of about 35 to 55 ° C. and performing the drying operation using the far infrared dried soybean obtained by performing the drying operation and heated air. The far-infrared dried soybean and the soybean commercial product itself were immersed in water and subjected to a peeling test. The results are shown in Table 1.

From the work observation during that time and the results in Table 1, the following was found.
Commercial soybeans are dried by far-infrared rays for about 4 hours, resulting in a moisture content of 0% when the soybeans are dehydrated to the limit. When the dried soybeans are immersed in water, the skin absorbs water in about 10 minutes and swells greatly And cracks occur in the skin. At that stage, if the physical impact is applied to the skin by lightly applying a stirring rod, the skin can be completely peeled off very easily.

It is a top view of the far-infrared drying apparatus used suitably in order to manufacture the far-infrared drying soybean of this invention. It is a vertical side view of a far-infrared dryer. It is a vertical front view of a far-infrared dryer.

Claims (7)

In the method of peeling the peel of beans, the beans are dried by irradiating far infrared rays, and then the dried skin is contacted with water for a short time to swell the skin, and then the peeled skin is physically peeled off. A method for peeling a peel of beans. In the method of peeling the skin of beans, the beans are dried by irradiating them with far infrared rays for 0.5 hours or longer, and then the dried skin is contacted with water for 5 minutes or longer to swell the skin. A method for peeling a bean skin characterized by physically peeling off the beans. In the method for peeling the peel of beans, the beans are dried by irradiating them with far-infrared rays at an internal temperature of 30-60 ° C. for 1-24 hours, and then the dried product is contacted with water for 3-60 minutes to swell the skin. After peeling off, the method peels the peel of the beans characterized by physically peeling off the swollen skin. In the method for peeling the peel of beans, the beans are dried by irradiating them with far-infrared rays for 1 to 8 hours at an internal temperature of 35 to 55 ° C, and then the dried product is brought into contact with water for 5 to 20 minutes to swell the skin. After peeling off, the method peels the peel of the beans characterized by physically peeling off the swollen skin. The method of bringing water into contact with dried beans is a method of immersing beans in water or a method of spraying water on beans. How to peel off. The method of physically exfoliating the swollen skin is a method in which a solid molded body is brought into contact with far-infrared dried beans immersed in water, and the far-infrared dried beans immersed in water are taken out The method for peeling the peel of beans according to any one of claims 1 to 5, which is a method of radiating pressurized water or pressurized air to them. The method for exfoliating the peel of beans according to any one of claims 1 to 6, wherein the beans are any one of soybeans and black beans.