JP3174744B2 - Rice bran deterioration prevention treatment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to prevention of rice bran deterioration.
The present invention relates to a processing device .

[0002]

2. Description of the Related Art Rice bran produced when milling brown rice is rich in fat, oily raw material,
It has been used as a fungal bed for cultivating mushrooms and feed for livestock. However, the use of rice bran has been restricted because the oxidation of fat progresses quickly and it is liable to deteriorate. In rice bran, fat globules called spherosomes are broken by polished rice and decomposed into glycerin and free fatty acids by lipase, a lipolytic enzyme contained in the rice bran.
If free fatty acids are left as they are, they will undergo enzymatic oxidation by lipoxygenase and auto-oxidation by oxygen over time to form lipid peroxides and produce aldehydes and ketone bodies, but these lipid peroxides are harmful to living organisms .

Therefore, a stable storage method of rice bran (suppressing the production of lipid peroxide) has been demanded, but there is no decisive method, and refrigerated storage is generally used. From summer to summer, there was a problem that preservation of raw rice bran was difficult in terms of cost and facilities.

[0004] By the way, oxidation of lipids has been taken up as an index of quality deterioration of brown rice for long-term storage at room temperature, for example. However, regarding rice bran, studies have been made to grasp deterioration of rice bran from the viewpoint of lipid oxidation. Not done.

It is generally known that enzymes are inactivated by heat treatment. However, the role of lipase involved in the oxidation of rice bran lipids has been underestimated. No attempt has been made to capture it from the viewpoint of oxidation.

As described above, rice bran is one in which fat globules are broken by polished rice and decomposed into glycerin and free fatty acids by contact with lipase, a lipolytic enzyme, and deteriorate more quickly than brown rice.

[0007] Accordingly, the present inventors regard the degradation of rice bran from the viewpoint of lipid oxidation, and as a result of emphasizing the role of lipase, suppress the increase in the fatty acid level of rice bran and produce high quality rice bran at low cost. Prevention of deterioration of rice bran that can be produced
The device was completed.

[0008]

The gist of the present invention will be described with reference to the accompanying drawings.

[0009] Driving rice bran and variable speed
From a pipe-type screw conveyor driven by section 8
The supply port 2 to the discharge rice bran in Milling the upstream side of the transport unit 1 comprising feeding to the conveyor unit 1 is provided, the provided heating unit 3 on the downstream side of the conveying section 1, the heating unit 3 Transport unit 1
Steam from the steam boiler 5 to the outer cylinder 7 provided outside the
The rice bran in the transport unit 1 is fed for about 10 to 60 seconds, 100
The present invention relates to a rice bran deterioration prevention treatment apparatus characterized in that the rice bran is heated to a temperature of from 130 ° C. to 130 ° C., and an outlet 4 for discharging the rice bran passing through the heating unit 3 is provided downstream of the heating unit 3. Things.

[0010]

Function and Effect of the Invention Heat is applied to the rice bran discharged in rice milling to inactivate the lipase of the lipolytic enzyme, and by inactivating the lipase, it is possible to suppress the decomposition of fat, thereby increasing the fatty acid content. Is suppressed, and
Rice bran can be stored for a long time without deteriorating the quality.

[0011] Therefore, high-quality rice bran can be effectively used as livestock feed and oil raw materials.

Further, when rice bran is heated by steam, a large amount of rice bran can be efficiently and uniformly heated.

The lipase of the lipolytic enzyme can be efficiently inactivated by setting the heating temperature to 100 ° C. to 130 ° C.

A supply port 2 for supplying the rice bran discharged by the milling process to the transport unit 1 is provided upstream of the transport unit 1 for transporting the rice bran, and the rice bran is heated downstream of the transport unit 1. Is provided on the downstream side of the heating unit 3 for discharging the rice bran that has passed through the heating unit 3, so that the rice bran can be easily heated with a very inexpensive and simple device. be able to.

Further, since the outer cylinder 7 is provided outside the transport section 1 and an appropriate heating means is provided in the outer cylinder 7, the transport section 1 can be simply and efficiently heated.

Further, since the outer cylinder 7 is provided outside the transport unit 1 and the steam is supplied from the steam boiler 5 to the outer cylinder 7, the transport unit 1 is simply and efficiently heated with steam. be able to.

A driving unit 8 for driving the transport unit 1
Is configured to be variable speed, the flow rate of the rice bran to be conveyed can be freely adjusted, and the heating condition of the rice bran can be arbitrarily controlled.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A rice bran deterioration preventing treatment method and a rice bran deterioration preventing treatment apparatus according to one embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, as shown in FIG. 1, a pipe-type screw conveyor is used as a transport section 1 for transporting rice bran, and the rice bran discharged by the rice polishing is transported upstream of the transport section 1 to the transport section. Providing a supply port 2 for supplying to 1;
As a heating unit 3 for heating rice bran on the downstream side of the transport unit 1, an outer cylinder 7 is attached to the outside of the transport unit 1 by welding, and a steam boiler 5 for feeding heated steam to the outer cylinder 7 is provided. The steam boiler 5 is provided in the vicinity of the transport unit 1 so that steam can be supplied from the steam boiler 5 into the outer cylinder 7 through the pipe 6.

The pipe-type screw conveyor constituting the transport section 1 has a structure in which a pipe is formed from a steel pipe or a stainless steel pipe as a raw material, and powder of rice bran is transported by rotation of a screw or spiral formed inside the pipe. It is.

The transport unit 1 is provided with a drive unit 8 for driving the transport unit 1 as appropriate. The drive unit 8 uses a reduction gear attached to a commercially available screw conveyor, and adjusts the voltage of the power supply of the reduction gear. Thus, the transport unit 1 can be driven at a variable speed.

The drive unit 8 drives the pipe-type screw conveyor of the transfer unit 1 to operate, and the rice bran supplied into the pipe is transferred to the downstream side of the screw conveyor by rotation of the screw or spiral inside the pipe.

In the supply port 2 provided in the transport section 1, a metering device for metering the rice bran discharged from the rice mill can be provided as appropriate.

The rice bran supplied from the supply port 2 of the transport unit 1 is transported from the upstream side to the downstream side of the transport unit 1 and
Is discharged to the outside of the transport unit 1 from a discharge port 4 provided on the downstream side of the heating unit 3 of the transport unit 1.

In order to store the heat-treated rice bran discharged from the outlet 4 and store it in a container for transportation and store it tightly, a container such as a plastic drum can or a transbag with a vinyl inner bag is inserted into the outlet 4. It is configured to be able to abut.

The rice bran discharged from the rice mill is immediately supplied from the supply port 2 to the screw conveyor of the transport section 1 and transported at a constant flow rate. The temperature of the rice bran conveyed by the screw conveyor begins to rise before the heating unit 3 and the heating unit 3
The steam temperature is about 160 ° C and the pipe temperature is 130 ° C
The heat treatment is carried out with a certain degree of heating.

The rice bran is automatically stirred by being fed by a screw conveyor and uniformly heated, and the rice bran is transported without stagnation, so that the rice bran is not subjected to excessive heat denaturation such as browning.

The rotation speed of the screw conveyor is controlled by the drive unit 8.
Can be continuously changed by adjusting the power supply voltage of the speed reducer, and the flow rate and flow rate of the rice bran can be freely adjusted. Therefore, the rice bran can be appropriately set to a desired heating condition such as a desired heat treatment time.

As described above, the rice bran passing through the heating unit 3 is subjected to a heat treatment at a predetermined temperature, for example, about 130 ° C., for a predetermined time, for example, about 10 to 60 seconds. be able to.

The heat treatment conditions for inactivating the lipase, a lipolytic enzyme in rice bran, were examined by various experiments. As a result, the heating temperature was in the range of 100 ° C. to 130 ° C., corresponding to each heating temperature. This required a heating time of about 10 to 60 seconds.

Experiments have shown that the heating conditions for inactivating lipase most efficiently and surely are those where the heating temperature is set at about 130 ° C. and the heating time is set at about 30 seconds.

The heating temperature is about 130 ° C. and the heating time is 3
As a result of storing rice bran heated under heating conditions of about 0 seconds at room temperature of 30 ° C. for a long time, rice bran that has not been heat-treated is reduced to 1%.
The rice bran heated under the above-mentioned heating conditions showed an acid value and a peroxide even after storage for more than 60 days, while the acid value and the peroxide value increased considerably after storage for about 5 days, and the rice bran was heated under the above heating conditions. Both prices hardly increased and there was almost no deterioration of rice bran quality. Therefore, the heat-treated rice bran can be stored for a long period of time without deterioration in quality.

The heat-treated rice bran that has passed through the heating unit 3 is transported downstream of the heating unit 3 and is heated by the heating unit 3 of the transport unit 1.
Is discharged to the outside of the transport unit 1 through a discharge port 4 provided on the downstream side of the container. The discharge port 4 is provided with a container such as a plastic drum for storing or transporting rice bran or a transbag with a vinyl inner bag. The heat-treated rice bran discharged from the discharge port 4 is packed in the container and sealed and stored.

In this embodiment, as described above, the lipase of the lipolytic enzyme can be inactivated by applying heat to the rice bran discharged in the rice polishing, and the degradation of fat is suppressed by inactivating the lipase. Because of this, the increase in the fatty acid content is suppressed, and thus the rice bran can be stored for a long time without deteriorating the quality.

Therefore, high-quality rice bran can be effectively used as livestock feed, oil raw materials, and nutrients for mushroom cultivation.

Further, a supply port 2 for supplying the rice bran discharged by the milling process to the transport unit 1 is provided upstream of the transport unit 1 for transporting the rice bran, and the rice bran is heated downstream of the transport unit 1. And a discharge port 4 for discharging the rice bran that has passed through the heating unit 3 from the transport unit 1 is appropriately provided in the transport unit 1, so that the rice bran can be easily manufactured with a very inexpensive and simple device. Can be heated.

When rice bran is heated by steam, a large amount of rice bran can be efficiently and uniformly heated.

Further, since the outer cylinder 7 is provided outside the transport section 1 and steam is supplied from the steam boiler 5 to the outer cylinder 7 through the pipe 6, the transport section 1 is simplified and the efficiency is improved. It can be heated with steam.

A drive unit 8 for driving the transport unit 1
Is configured to be variable speed, the flow rate of the rice bran to be conveyed can be freely adjusted, and the heating condition of the rice bran can be arbitrarily controlled.

As described above, the rice bran can be stored at low cost and with stable quality by the rice bran deterioration prevention treatment method of the present embodiment, so that it can be effectively used as livestock feed and oil raw material.

Further, by using high-energy cooked rice bran as feed, low-cost production of livestock products becomes possible.

Further, rice bran, which is a local resource, can be effectively used in the mushroom industry such as enoki cultivation.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram illustrating a rice bran deterioration prevention processing apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transport part 2 Supply port 3 Heating part 4 Discharge port 5 Steam boiler 7 Outer cylinder 8 Drive part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-174063 (JP, A) JP-A-46-42930 (JP, A) JP-A-2-100644 (JP, A) 42574 (JP, B1) Jiko 16-16977 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) A23L 1/10 A23L 3/22

Claims (1)

(57) [Claims] 1. A drive device for transporting rice bran and having a variable speed.
From a pipe-type screw conveyor driven by moving parts
The discharged rice bran in Milling the upstream side of the transport section comprising providing a supply port for supplying to the conveying section, a heating section provided on the downstream side of the transport unit, the heating unit is provided outside of the transport unit La
Steam from the steam boiler to the
Heat the bran to 100 ° C to 130 ° C for about 10 to 60 seconds
That structure a is, the deterioration prevention processing apparatus rice bran, characterized in that a discharge port for discharging the rice bran that has passed through the heating unit to the downstream side of the heating unit.