JPS6363357A - Method and apparatus for deodorizing soybean - Google Patents

Abstract

PURPOSE:To render provision of a heating source for generating high temperature steam and a supplying tube for supplying the steam unnecessary, by radiating far-infrared rays into soybean grains and removing odor included in a lipid content of the grains. CONSTITUTION:While shelled soybean grains 11 are dropped from a hopper 13 to the inside of a case 12 and moved in the arrow direction by a belt 16, far-infrared rays having about 50-1,000mum long wave length is radiated on the soybean grains by a far-infrared ray heater. The inner part of the soybean grains is homogeneously heated by resonantly interacting far-infrared rays with a high polymer constituting the soybean grains to remove the odor peculiar to soybeans.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a method and apparatus for deodorizing soybeans using far infrared rays.

[Conventional technology]

Soybeans are Japan's representative grain with extremely high nutritional value, rich in excellent vegetable protein and fat, and have been used since ancient times to produce tofu, miso, and
It is used as a raw material for soybean oil, natto, etc.

In recent years, in addition to being used as an ingredient in traditional Japanese processed foods, soybean powder has also been used as an additive in foods such as bread, confectionery, udon, soba, and seasonings. is expanding.

When soybeans or soybean flour is used as a raw material in the above-mentioned processed foods, it is essential to remove the characteristic bluish odor contained in the lipid content of soybeans.

Conventionally, as a technique for removing such odors, the one shown in Fig. 4 is known (Japanese Patent Publication No. 48-199
46).

The configuration will be explained below.

[, 51 out of 1 is a cleaning block, packet conveyor 5
The soybean particles introduced in Step 2 are washed in a short time (1-2 minutes) using a shower screen, etc., and then dehydrated and dried using a centrifugal dehydrator. Reference numeral 53 is a pressure-biasing block, in which soybean particles from which foreign impurities such as dust have been removed in the cleaning block 51 are carried in using a packet feeder 52, and the soybean particles are compressed by a pressure-biasing roll to such an extent that oil and fat are not removed. Let the stool dry.

54 is a drying block with a thermal atmosphere that circulates at constant temperature and humidity (5
An endless conveyor separated into several stages is installed in the temperature range (0 to 60°C), and the injected pressure part particles are transferred for about 1 hour while being repeatedly turned over on each conveyor, and the moisture content is reduced to about 3.
The drying process is adjusted to approximately %. 5
5, the pressure-biased soybean particles after drying are coarsely '756, air-selected 5
Packet conveyor 52 to be transferred to block 56' of 7
Le.

The coarse crushing air selection block 56' separates the dried pressure part particles into approximately 10
After coarsely cracking the particles into mesh size using a crusher 56, the particles are separated into seed coats and cotyledons (flesh) using a wind screener 57, and only the seed coats are discharged and removed. 58 removes the seed coat with a deodorizing block and stirs the roughly split cotyledons while spraying steam (110 to 120°C) sent from the boiler 59 for 7 to 8 minutes to eliminate the odor of the fat contained in the cotyledons. take it off. In short, the cotyledons are heated to deodorize them. The odor of the removed fat and the moisture imparted to the cotyledons by the spray of steam are removed by suction by a vacuum suction device 60 and dried. In this case, the residual moisture is about 2%. Reference numeral 61 is a hopper for storing the deodorized cotyledons and feeds a fixed amount of the cotyledons to the crusher 62. The pulverizer 62 further pulverizes the cotyledons roughly cut into about 10 meshes into 80 to 90 meshes, and then sends the cotyledons to a finishing pulverizer 63 where they are pulverized to a particle size of 1000 meshes. The pulverizer 63 is equipped with a constant temperature device to prevent the powder to be pulverized from releasing fat content by heating or to prevent other components from being destroyed by heat. Reference numeral 64 is a product storage tank in which finely ground soybean flour is transferred and stored using wind pressure or the like.

[Problem that the invention seeks to solve]

Particularly difficult problems with deodorization technology are that if you try to deodorize with steam at too high a temperature, the soybeans will become de-fatted and nutrients will break down, and if the temperature is too low, the soybeans will be compressed and the oil will be extracted. As a result, the nutritional value it contains is reduced, and deodorization is incomplete.

That is, appropriate temperature control during heating for deodorization becomes an important issue.

By the way, in the above-mentioned conventional deodorizing technology, heating is performed using steam, which not only makes temperature control difficult, but also requires about 7 to 8 hours to heat the inside of the soybean cotyledons.
This method requires steam heating for several minutes, resulting in low productivity and increased costs.

[Means for solving problems]

This invention was made in view of the above-mentioned conventional problems.
Instead of heating with steam to remove the odor of soybean particles, far-infrared rays are emitted, and this far-infrared rays interact resonantly with the polymers that form the soybean particles to uniformly heat the soybean particles. Removes the odor contained in the lipid content.

〔Example〕

The present invention will be described in detail based on the drawings.

FIG. 1 is a diagram showing an embodiment of the method for deodorizing soybeans using far infrared rays according to the present invention.

First, foreign substances such as straw waste, pebbles, and seeds of other plants from the raw soybeans put into the raw material hopper 1 are sorted out by the coarse sorter 2, and then cracked and inferior soybeans are removed by the sorter 3.

Next, the selected raw soybeans are heated in a heating machine 4 to make them easier to dehull, and the seed coat is dehulled in a dehulling machine 5.

The dehulled soybean particles are sent to the deodorizer 6 through a duct. The entire configuration of the deodorizing machine 6 will be explained based on FIG. 2.

The deodorizing machine 6 is composed of a body 12 extending in the length direction. The dehulled soybean particles 11 are dropped into the national polity 12 from a hopper 13 provided at the top end of the national polity 12. The soybean particles 11 are aligned by an upper roller 14 and a pair of lower rollers 15 and moved along a belt 16 in the direction of the arrow.

During this time, the soybean particles 11 are irradiated with far-infrared rays having a very long wavelength of about 50 to 1,000 μm by the far-infrared heater 7 suspended from the earthen wall of the deodorizer 6 and extending in the length direction. As a result of the far infrared rays interacting resonantly with the polymers forming the soybean particles and uniformly heating the inside of the soybean particles, the unique odor contained in the fat content of the soybean particles is completely removed.

Note that, in order to more completely deodorize, a steam pipe 17 for sending high-temperature steam to the deodorizer 6 can be installed near the hopper 12.

Next, when producing soybean powder by crushing the deodorized soybean particles 11, the deodorized soybean particles 11 are sent to a coarse crusher 8, coarsely crushed and dried, and then crushed by a Hui crusher 9. - Fine soybean powder of about 150 to 200 mesh size can be obtained by the loss recovery machine 10.

Note that 18 is an outlet for discharging the deodorized soybean particles 11.

Next, another embodiment of the present invention will be described based on FIG.

20 is a deodorizing machine, and a cylinder 21 is arranged in the internal axial direction. A screw conveyor 22 is provided inside the cylinder 21, and is configured to be able to transport the soybean particles 11 dropped from the hopper 23 while rotating in the direction of the arrow.

A ceramic material 24 made of far-infrared paint is disposed on the inner wall of the cylinder 21. 24 is a steam feed pipe for heating the deodorizer 20.

Next, the operation of this embodiment will be explained.

When the main body of the deodorizer 20 is heated by steam heated by a desired heating means and passes through the feed pipe 24, the ceramic material 24 made of far-infrared paint is also heated, and the temperature is approximately 50 to 50 i.
It emits far-infrared rays with a very long wavelength of about oooμm. At this time, the soybean particles 11 moving while rotating within the cylinder 21 are irradiated with far-infrared rays. The far infrared rays interact resonantly with the polymer that forms the soybean particles, and as a result, the interior of the soybean particles is uniformly heated, and the unique odor contained in the fat content of the soybean particles is completely removed.

〔Effect of the invention〕

The present invention can obtain the following effects through the configuration and operation described above.

(a) Dehulled soybean particles are uniformly heated to the inside of the particle in a very short time by far infrared radiation, and the odor peculiar to soybeans is removed. Conventionally, it is necessary to heat the product with high-temperature steam for a long time, so the deodorization time can be significantly reduced.

(b) Shortening the deodorization time contributes to reducing the cost of soybean processing. Furthermore, it eliminates the need for a heating source to generate high-temperature steam and a feed pipe to deliver it.
Soybean processing costs will further decline.

[Brief explanation of drawings]

Fig. 1 is a schematic block diagram of an embodiment of the method and device for deodorizing soybeans using far infrared rays according to the present invention, Fig. 2 is an explanatory diagram of the deodorizing machine of the same device, and Fig. 3 shows that the deodorizing machine is a ceramic heater. 4 is a partial sectional view of the third necessary part, and FIG. 5 is a block diagram of a conventional production apparatus for deodorized soybean fine powder. 6... Deodorizing machine 7... Far infrared heater 11...
... Soybean particles 12 ... National polity 13 ... Hopper 14.15 ... Roller 16 ... Belt 17 ... ......Steam pipe 18...Outlet 20...Deodorizer 21...Cylinder 22...・・Screw conveyor 24・・−
... Ceramic body Figure 2 Figure 3 Figure 4

Claims (5)

[Claims] (1) Far-infrared rays are emitted to the dehulled soybean particles, and the far-infrared rays interact resonantly with the polymers that form the soybean particles, thereby uniformly heating the inside of the soybean particles and incorporating them into the lipid content. A method for deodorizing soybeans characterized by removing odor. (2) A casing, a far-infrared ray generating means disposed within the casing, and radiating far-infrared rays to soybean particles for a certain period of time to cause the far-infrared rays to interact resonantly with the polymer forming the soybean particles. A soybean deodorizing device comprising a conveying means for uniformly heating the inside of soybean particles. (3) The soybean deodorizing device according to claim 2, wherein the far-infrared ray generating means is an infrared heater provided above the conveying means. (4) The soybean deodorizing device according to claim 2, wherein the far-infrared ray generating means is a ceramic material that radiates far-infrared rays by infrared radiation from the heating means. (5) The soybean deodorizing device according to claim 4, wherein the ceramic material is a far-infrared paint.