KR100429052B1 - Gel-coated seed of hulled rice - Google Patents

Abstract

Gel coating of brown rice which enables treatment to promote germination, prevents damage during post-germination handling of infants and roots, and prevents seeds from getting sick, such as blast, blight or rice leg disease, without disinfection Seeds are provided. Gel-coated seeds of brown rice are disease-free brown rice coated with an aqueous gel layer.

Description

Gel-coated seeds of brown rice {GEL-COATED SEED OF HULLED RICE}

Background of the present invention

The present invention relates to gel coated seeds of brown rice.

Description of related technology

Rice disease caused by diseases such as blasts, blight, and rice limbs is caused by spores or pathogens attached to the skin. Therefore, after sorting, the seeds are disinfected before treatment to promote germination. However, the waste liquid of the disinfectant for disinfecting the seeds causes environmental pollution.

In Japanese Patent Application Publication No. H9-248017, artificially coated seeds of brown rice produced in the following steps have been proposed: removing the shells from which the spores or pathogens are likely to attach, ie when making brown rice, The shell is removed; And an aqueous binder is coated thereon in the form of a film.

However, according to the above technique, the coating film is easily peeled off and it is difficult to protect the embryo and the germ from the mechanical impact at the time of mechanical seeding, thereby causing a significant decrease in germination rate. Moreover, the process for promoting germination cannot be executed.

In addition, microorganisms such as various yeasts and molds multiply in their breast milk, and during germination, such breeding becomes more pronounced due to the saccharification of starch in the breast milk, and consequently, the germination rate is likely to decrease.

Summary of the invention

Therefore, to solve the above problems and treatment for promoting germination can be carried out, brown rice which prevents damage to infants and roots when handling after germination, and prevents seeds from diseases such as bleeding, blight or flimsy legs disease. It is an object of the present invention to provide gel coated seeds of.

In order to achieve the above object, the present invention provides a gel-coated seed of brown rice, characterized in that the disease-free brown rice is coated with an aqueous gel layer.

1 is a schematic appearance of gel coated seeds of brown rice according to the present invention.

Description of Preferred Embodiments

In the present invention, blightless brown rice means brown rice whose shell is removed. Here, in order to keep the brown rice safely without a bottle, brown rice is washed with clean water after removing the shell, for example by using a rice mill.

The disease-free brown rice has an aqueous gel layer thereon, thereby producing gel-coated seeds of brown rice of the present invention.

For example, the aqueous gel layer is formed by the following steps: forming droplets of the aqueous gel-forming solution for coating seeds at the tip of the tubule; Adding seeds into the droplets by using another tubule; And then dropwise addition of the aqueous gel-forming solution into the solution containing the metal ions acting as a gel to insoluble in water.

As the aqueous gel-forming solution, sodium alginate or sodium polyacrylate may be used. The metal ion which acts to make the gel insoluble in water is a divalent metal such as calcium ion or barium ion, or aluminum ion. In general, aqueous solutions of their chlorides are used in view of preventing adverse effects on plants.

As a solution for forming an aqueous gel, an aqueous solution of carboxymethyl cellulose may also be used, and as a coagulant, potassium aluminum sulfate (ie potassium alum) may be used.

The disease-free brown rice dispersed in the aqueous gel-forming aqueous solution for seed coating is sucked up with the solution by using a pipette-type tube and added dropwise into the coagulating solution to form an aqueous gel layer around the disease-free brown rice.

The concentration of the aqueous gel forming solution is adjusted to achieve a strength suitable for handling after solidification of the aqueous gel layer. The hardness of the aqueous gel layer is adjusted by varying the time for contacting the coagulating liquid.

Various preservatives, fertilizers or growth accelerators can be added into the aqueous gel forming aqueous solution so that the aqueous gel layer contains these components to promote plant germination and growth.

The aqueous gel layer thus formed not only physically, chemically and biologically protects the diseased brown rice, but also promotes its germination by watering the brown rice. Moreover, after germination of brown rice, infants and roots grow in the aqueous gel layer, and thus infants and roots are unlikely to be damaged during mechanical sowing and handling.

In view of mechanical sowing and handling in various hoppers, the shape of the gel-coated seed of brown rice in the present invention is preferably spherical. Here, a slight deformation, such as a heterogeneity on the surface, is allowed, so the shape is not necessarily spherical. The form may be substantially spherical to withstand mechanical seeding and handling in various hoppers.

When gel-coated seeds of brown rice are treated in mechanical sowing or hopper, the thickness of the aqueous gel layer is generally determined that the gel-coated seeds of brown rice have a diameter of 6 mm or more in order to protect the diseased brown rice, infants and roots covered therein. Such is the case. On the other hand, when the diameter of the gel-coated seed of brown rice is 30 mm, the number of seeds that can be introduced into a hopper such as a seeding machine is reduced, thus increasing the number of times of feeding, deteriorating handleability, and even germination rate. As a result, the diameter of the gel-coated seed of brown rice is set to 15 mm or less. The gel coated seed of brown rice according to the present invention can be stored for a relatively long time if it is dried immediately after its production, so that the equipment and apparatus for forming an aqueous gel layer can be used efficiently. Dried gel-coated seeds of brown rice, when soaked in water, restore their original state prior to drying and can then be treated similarly to conventional gel-coated seeds of brown rice, such as when sowing mechanically.

Example

Next, the gel-coated seed of brown rice according to the present invention will be described with reference to the examples.

Example 1

Droplets of an aqueous solution of 1.5% by weight of alginic acid (aqueous gel forming solution) containing a preservative (0.01% concentration; Topside 400 manufactured by Perchem Asia Co., Ltd.), which are generally added to food, are formed. Koshihikari brown rice is added into the droplets using tubules, after which the droplets are added dropwise into an aqueous solution of 10% by weight potassium hydroxide (a coagulant containing a metal ion that makes the gel insoluble in water). Spherical gel-coated seeds of brown rice having a diameter of 10 mm are produced by soaking for 40 seconds and washing with water.

After the 400 grains of the thus produced gel-coated seed of two of the filter is over a four diameter 120mm Petri dish was put in fold, and seeded into 100 tablets per each Petri dish, followed by in 8mL of water was added over the 25 ^o Stored in C

On the other hand, 400 grains of brown rice without gel coating were sown on four 120-mm-diaper Shaales in which the filters were stacked, and 100 grains per each saale, and then 8 mL of water were added thereon to 25 ^o C. Kept.

The germination rates of these samples were then examined. The results are shown in Table 1. Numerical values in Table 1 were rounded off to one decimal place.

Days after sowing 0 One 2 3 4 5 6 Gel-coated seeds of brown rice 0% 0% 13.3% 89.8% 97.5% 98.8% 99.3% Brown rice 0% 0% 6.0% 44.3% 45.3% 45.5% 45.8%

Table 1 shows that the germination rate of the gel-coated seed of brown rice according to the present invention was significantly higher than that of brown rice without an aqueous gel layer. For brown rice without any aqueous gel layer, mold began to develop on the second day after sowing, while for gel-coated seeds of brown rice according to the present invention, no mold occurred.

Example 2

A droplet of an aqueous solution of 3% by weight of carboxymethyl cellulose (aqueous gel forming solution) containing a preservative (0.01% concentration; Topside 400 manufactured by Perchem Asia Co., Ltd.), which is generally added to food, is formed. One koshihikari brown rice is added into the droplets using tubules, after which the droplets are added dropwise into 10% by weight potassium sulfate, i.e. an aqueous solution of potassium alum (coagulant) and the grain is soaked for 45 seconds. Washing with water produces spherical gel-coated seeds of brown rice having a diameter of 10 mm. 1 is a schematic appearance of gel coated seeds of brown rice so made.

In syayal of 400 grains of the thus produced gel-coated seed of two of four diameter 120mm filter it is placed with layers of Levi, and seeded into each Shah 100 tablets per Alessio, then after the in 8mL of water was added over the 25 ^o Stored in C

On the other hand, 400 grains of brown rice without gel coating were sown on four 120-mm-diaper Shaales in which the filters were stacked, and 100 grains per each saale, and then 8 mL of water were added thereon to 25 ^o C. Kept.

The germination rates of these samples were then examined. The results are shown in Table 2. The numerical values of Table 2 were rounded off to one decimal place.

Days after sowing 0 One 2 3 4 5 6 Gel-coated seeds of brown rice 0% 0% 13.5% 85.3% 92.5% 94.3% 94.3% Brown rice 0% 0% 6.0% 67.3% 72.8% 73.5% 73.5%

Table 2 shows that the germination rate of the gel-coated seed of brown rice according to the present invention was significantly higher than that of brown rice without an aqueous gel layer. For brown rice without any aqueous gel layer, mold began to occur on the third day after sowing, whereas for the gel-coated seed of brown rice according to the present invention, no mold occurred.

The germination rate of brown rice without the aqueous gel layer shown in Table 1 can be seen to be significantly different from that shown in Table 2. This means that the germination rate is relatively low when the time of mold development (by visual inspection) is reached, since the timing of mold development affects the germination rate, so that the germination rate of brown rice without any aqueous gel layer is uniform. . On the contrary, for the gel-coated seeds of brown rice according to the present invention, the germination rate is relatively uniform, its reproducibility is relatively good, and when seeding on the saale, the germination rate of 90% or more can be achieved.

In addition, the following investigation was conducted. Gel-coated seeds of brown rice are prepared in a similar manner as in Example 2, and then treated for promoting germination by keeping in a constant temperature bath at 25 ^° C., whereby germination occurs. Before germinated infants or roots protrude from the aqueous gel layer, the gel-coated seeds of brown rice are sown in the field by using an automatic planter. The gel-coated seeds of brown rice are then handled in such a way that they are transferred into the hopper of the automatic planter using a bucket. As a result, the handling did not adversely affect the growth of the plant and its germination rate was as high as that of gel-coated seeds sown by hand in the field.

The sowing was carried out after the sowing distance was set to 10 cm, and the measurement of the seeding point was carried out after sowing, and the result was that the seed distance was actually 10 cm ± 1 cm. In other words, the gel-coated seeds of brown rice according to the present invention can be accurately sown using an automatic planter.

The above preferred embodiments have been described to aid the understanding of the present invention and modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

Thus, the gel-coated seed of brown rice according to the present invention enables the treatment to promote germination and prevents damage during post-germination handling of infants and roots, and the seeds can be blasted, blight or rice without disinfection. Make sure you don't get sick like a long leg disease.

Claims (5)

A gel-coated seed of brown rice, wherein a non-bleached brown rice is coated with a water-insoluble aqueous gel layer, which contains at least one metal ion of calcium ions, barium ions, and aluminum ions. The brown rice gel-coated seed according to claim 1, wherein the brown rice gel-coated seed is substantially spherical. The brown rice-coated seed according to claim 1, wherein the aqueous gel layer contains a preservative. A solution containing a metal ion having a process of forming a droplet of an aqueous gel-forming aqueous solution, a step of adding a disease-free brown rice into the droplet, and a function of insolubilizing the gel with water in the droplet to which the disease-free brown rice is added. A method for producing a gel-coated seed of brown rice, comprising the step of dropping in a brown rice. The method for producing a gel-coated seed of brown rice according to claim 4, wherein the metal ion is at least one metal ion of calcium ions, barium ions, and aluminum ions.