JP2001231313A - Method for washing rice seed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for washing rice seeds by which the fungicidal properties are excellent, germinating properties are improved, the safety environmental hygiene is excellent and the advantage even to cost is present. SOLUTION: This method for washing rice seeds comprises at least a step of washing the rice seeds with an acidic electrolyzed water obtained by electrolyzing a liquid which is to be electrolyzed and consists essentially of water and a step of washing the rice seeds with an alkaline electrolyzed water prepared by electrolyzing the liquid to be electrolyzed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning rice seeds before sowing, and more particularly, to rice seeds which are excellent in germicidal properties, improved in germination, safe and environmentally hygienic, and advantageous in cost. Cleaning method.

[0002]

2. Description of the Related Art As a method of disinfecting and disinfecting rice seeds, a method of immersing seeds in disinfectants such as a mixture of benomyl and TMTD and a pefurazoate is known. It is effective for controlling disease, rice blast and rice blast bacterial disease.

[0003] Further, as a method for disinfecting rice seeds which is effective for controlling bacterial diseases such as rice seedling damping-off and has low toxicity, alkali metal or alkaline earth metal carbonates, bicarbonates, etc. Use a disinfectant prepared by adding hydrogen phosphate, dihydrogen phosphate, sodium hydroxide, potassium hydroxide, calcium hydroxide, tris (hydroxymethyl) aminomethane, and a buffer to water and adjusting the pH to 7 or more. Has also been proposed (see Japanese Patent Application Laid-Open No. 9-271211).

[0004]

However, since all of the above-mentioned disinfectants are chemical substances, even if they have low toxicity, they are not nothing, and it cannot be declared that they are 100% harmless.

[0005] The present invention has been made in view of such problems of the prior art, and is a rice seed which is excellent in germicidal properties, improved in germination, safe and environmentally sanitary, and advantageous in cost. It is intended to provide a cleaning method.

[0006]

According to the present invention, in order to attain the above object, rice seeds are washed using acidic electrolyzed water obtained by electrolyzing an electrolyzed solution containing water as a main component. There is provided a method for cleaning rice seed, comprising at least a step of cleaning the rice seed using alkaline electrolyzed water obtained by electrolyzing the solution to be electrolyzed (see FIG. 1).

In the present invention, although not particularly limited, it is more preferable that the rice seed is washed with the electrolytic water, and then the rice seed is immersed and / or washed with water.

[0008] In the present invention, the pH of the acidic electrolyzed water
Is 3 or less, more preferably 2.7 or less.

[0009] In the present invention, the pH of the alkaline electrolyzed water is 11 or more, more preferably 11.3 or more.

[0010]

[Operation and Effect] When a voltage is applied between a pair of electrodes and a direct current is passed through an electrolyte to be composed mainly of water, the electrolytic solution is electrolyzed. Is generated, and alkaline electrolyzed water is generated on the cathode side.

When the rice seeds are washed with the electrolyzed water generated by the electrolysis, the rice seeds are attached to the rice seeds or infected by the action of active oxygen, chlorine and the like contained in the acid electrolyzed water. Pathogenic bacteria can be killed.

When the rice seeds are washed using the alkaline electrolyzed water generated by the electrolysis, the action of the alkaline electrolyzed water neutralizes the acidic electrolyzed water used in the previous washing, and germinates. The number of days is shortened and the growth of rice is promoted. In addition, during the growing process of rice, root growth is promoted, aging is suppressed, and the rice stem becomes hard to fall.

In the method for cleaning rice seeds of the present invention, electrolyzed water, which is a non-chemical substance, is used, so there is no persistence and no resistance to bacteria. Therefore, compared with the conventional cleaning method using a chemical substance, the cleaning time and the amount of the cleaning liquid used in the water cleaning after the electrolytic water cleaning can be greatly reduced. Moreover, since there is no need to consider the adverse effect of the remaining chemical substance on rice at all, the handling of the cleaning liquid is extremely simple, and there is no need to perform waste liquid treatment. Furthermore, since the raw material is water, it is extremely inexpensive and anyone can produce it.

[0014]

Embodiments of the present invention will be described below. Example 1 Potassium chloride was added to water to prepare a 10% aqueous solution of potassium chloride, and this was used as a liquid to be electrolyzed, and electrolysis was performed by a batch type electrolyzed water generator. The pH of the acidic electrolyzed water obtained in the anode chamber was 2.5, and the chlorine concentration was 40 ppm. The pH of the alkaline electrolyzed water obtained in the cathode chamber is 1
1.5.

First, 1 kg of rice seeds was immersed in 10 liters of the acidic electrolyzed water for 24 hours, and then immersed in 10 liters of the alkaline electrolyzed water for 24 hours. Finally, after immersion in 10 liters of fresh water for 24 hours, the water was changed while washing with water, and this was performed for 4 days. The rice seeds were sown in a nursery box, and the state of growth of the seedlings was observed. Then, the grown seedlings were planted in rice fields to observe the state of rice growth.

Comparative Example 1 1 kg of rice seeds were sown in a nursery box without treatment with electrolyzed water, and the state of growth of the seedlings was observed. The grown seedlings were planted in rice fields to observe the state of rice growth.

Comparative Example 2 First, 1 kg of rice seeds was immersed in 10 liters of the acidic electrolyzed water for 24 hours, then immersed in 10 liters of fresh water without treatment with the alkaline electrolyzed water for 24 hours, and then washed with water. Was performed while exchanging water, and this was performed for 4 days. The rice seeds were sown in a nursery box, and the state of growth of the seedlings was observed. Then, the grown seedlings were planted in rice fields to observe the state of rice growth.

Table 1 shows the results.

As is clear from the results, the rice seed of Example 1 which had been washed with the acidic electrolyzed water and the alkaline electrolyzed water had no growth impairment caused by pathogenic bacteria, and the rice seeds of Comparative Example 1 and Comparative Example 1 The germination rate was improved by about 5%, the germination days were shorter by about 2 days, and the growth days of rice were also shorter by about 10 days as compared with 2. Furthermore, the growth of the rice root was remarkable, the root length was about twice as long as that of Comparative Example 1, and the blueness of the stem was bluer and stronger than that of Comparative Example 1.

[0020]

[Table 1]

[Brief description of the drawings]

FIG. 1 is a process chart showing an embodiment of a rice seed cleaning method of the present invention.

Continued on the front page (72) Inventor Shigeru Matsumoto 4-17-4 Yotsuya, Shinjuku-ku, Tokyo Inside Eye Water Co., Ltd. (72) Inventor Teruo Nakajima 1579 Samukawa, Oyama City, Tochigi Prefecture (72) Inventor Hiroshi Matsumoto Tokyo 4-9-3 Iwatokita, Komae City F-term (reference) 2B051 AA01 AB01 BA04 BA09 BA14 3B201 AA48 AB01 BB02 BB92 BB96 CB15 CC01 CC21 4D061 DA02 DB07 DB08 DB10 EA02 EB02 EB04 EB39 ED12 GC18

Claims (4)

[Claims] 1. A step of washing rice seeds using an acidic electrolyzed water obtained by electrolyzing an electrolyzed solution containing water as a main component, and an alkaline electrolyzed water obtained by electrolyzing the electrolyzed solution. And washing the rice seed using the method. 2. The method according to claim 1, wherein the pH of the acidic electrolyzed water is 3 or less. 3. The method for cleaning rice seed according to claim 1, wherein the pH of the alkaline electrolyzed water is 11 or more. 4. The method for washing rice seeds according to claim 1, wherein the rice seeds are washed with the electrolyzed water, and then the rice seeds are immersed and / or washed with water.