JP2014119271A - Water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide water excellent in temporal stability of reduction force.SOLUTION: Following procedures (a)-(c) are carried out: (a) preparing iodine solution containing 70 mg of Japanese Pharmacopoeia povidone-isodine per 1 mL; (b) preparing a sample by adding and mixing 0.75 mL of the iodine solution to 100 mL of water; and (c) performing spectrometry for absorbance on wavelength of 396 nm of the sample on condition that optical path length is 10 mm. According to the measurement, the absorbance is one or less.

Description

  The present invention relates to water.

  Reduced water is known to have a good influence on the body, that is, the body. Specifically, by drinking the reduced water, immunity can be improved, lifestyle diseases, fatigue or aging can be prevented. This is an effect exerted by the reducing power (antioxidant ability) of the reduced water.

  Patent Documents 1 to 3 propose water having such a constitution improving function.

  Patent Document 1 discloses alkaline electrolyzed water having a dissolved oxygen amount of 3.0 ppm or less and a redox potential of −300 mV or less. It is described that the medical effect can be sufficiently expected by doing so.

  Patent Document 2 discloses reducing electrolyzed water having an oxidation-reduction potential of -100 mV or less when the pH is less than 8. By doing so, it is described that water having excellent reduction performance can be obtained.

  Patent Document 3 discloses a soft drink having an oxidation-reduction potential of −10 mV or less and −2000 mV or more under normal pressure. By doing this, it is described that it has sufficient reducing properties and can be taken on a daily basis.

JP-A-9-99287 JP 2000-33377 A JP 2004-344862 A JP 2011-25217 A

  However, the water described in the cited documents 1 to 3 has a reducing power when it is filled into a container such as a plastic bottle until it is consumed by a consumer and during distribution / storage such as subsequent transportation. May decrease.

  Therefore, the present invention provides water that is excellent in reducing power stability over time.

  The present inventors have examined the cause of the reduction of water reducing power during distribution and storage from production to consumption by consumers. As a result, it has been found that the reducing power of water so far is gradually reduced by, for example, coming into contact with air gradually penetrating into the filled container.

  Therefore, the present inventors diligently studied to provide water having excellent reducing power stability over time. As a result, a measure of absorbance at an optical path length of 10 mm and a wavelength of 396 nm of a solution obtained by adding 0.75 mL of iodine solution to 100 mL of water is a design guideline for evaluating the temporal stability of the reducing power of water. As a result, the present invention was found. Here, the iodine solution is a solution containing 70 mg of JP popidone iodine in 1 mL of the iodine solution.

According to the present invention, the following procedures (a) to (c)
(A) Prepare an iodine solution containing 70 mg of JP popidone iodine in 1 mL;
(B) A sample is prepared by adding and mixing 0.75 mL of the iodine solution to 100 mL of water,
(C) The absorbance at a wavelength of 396 nm of the sample is measured under the condition of an optical path length of 10 mm.
Water having the absorbance measured by 1 is 1 or less.

  ADVANTAGE OF THE INVENTION According to this invention, the water which is excellent in the temporal stability of reducing power can be provided.

The water according to this embodiment includes the following procedures (a) to (c).
(A) Prepare an iodine solution containing 70 mg of JP popidone iodine in 1 mL;
(B) A sample is prepared by adding and mixing 0.75 mL of the iodine solution to 100 mL of the water,
(C) The absorbance at a wavelength of 396 nm of the sample is measured under the condition of an optical path length of 10 mm.
The absorbance measured by 1 is 1 or less. By doing so, it is possible to obtain water excellent in reducing power stability over time. In addition, although the measurement temperature of an absorbance measurement is not specifically limited, For example, it implements on the measurement conditions of 25 degreeC. As a cell used for absorbance measurement, for example, a quartz cell is used.

  Here, the iodine solution is a solution containing 70 mg of JP popidone iodine in 1 mL of the iodine solution. Moreover, although not specifically limited, 7 mg of effective iodine may be contained in this iodine solution. The pH of the iodine solution is about 5, for example.

The water which concerns on this embodiment may be the drinking water which has a good influence on a body from the body, and the lotion which has a good influence on a body from the outside. That is, according to the water according to the present embodiment, the body can be positively influenced from both inside and outside the body.
Hereinafter, an embodiment of the present invention will be described by taking PET bottled drinking water as an example.

<Drinking water>
First, the difference between this embodiment and conventional drinking water will be described below.

  Conventionally, reduced water known as a good drinking water is water having an oxidation-reduction potential of 200 mV or less (standard hydrogen electrode (SHE) standard: the same applies hereinafter) (for example, Patent Documents). 4).

  However, as described in the section of the problem to be solved by the present invention, the conventional drinking water reducing power is filled in a container such as a plastic bottle after being manufactured and consumed by a consumer, and It will drop during distribution and storage during subsequent transportation. This may be caused by, for example, the oxidation-reduction reaction caused by the contact between the gap between the container and the lid and the minute amount of air that has entered from the surface of the container and the lid in contact with the produced drinking water during distribution and storage. It is conceivable that That is, it is considered that the reducing power of the drinking water is reduced by the air that has entered the container during distribution / storage contacting the drinking water.

  On the other hand, according to the drinking water of this embodiment, the optical path length of 10 mm and the wavelength of a solution (hereinafter also referred to as “test solution”) obtained by adding and mixing 0.75 mL of iodine solution to 100 mL of drinking water. Since the absorbance at 396 nm satisfies the above-mentioned specific condition, it is possible to obtain drinking water with excellent reducing power stability over time. The reason for this is not necessarily clear, but by setting the absorbance at a wavelength of 396 nm and the optical path length of 10 mm of the test solution to which the iodine solution is added and mixed, the air that has entered the container at the time of distribution / storage is the beverage Even if the reduction power is reduced due to contact with water, it is considered that the reduction power can be sufficient.

  In the present embodiment, the absorbance at an optical path length of 10 mm and a wavelength of 396 nm of a test solution to which an iodine solution is added and mixed is preferably 1 or less, and more preferably 0.5 or less. By doing so, it is possible to obtain drinking water that is further excellent in the temporal stability of the reducing power. Moreover, the pH of the drinking water which concerns on this embodiment is good in it being 7 or more.

  Moreover, it is preferable that the oxidation-reduction potential of the drinking water which concerns on this embodiment is 200 mV or less, and it is further more preferable in it being 80 mV or less. By doing so, it is possible to further improve the temporal stability of the reducing power, and it is possible to obtain drinking water that is excellent in terms of taste. The redox potential according to the present embodiment is based on a value measured using a standard hydrogen electrode.

Moreover, the hardness of the drinking water according to this embodiment is preferably 15 mg / L or more, and more preferably 30 mg / L or more. By doing so, it is possible to further improve the temporal stability of the reducing power, and it is possible to obtain excellent drinking water from the viewpoint of ease of drinking. In addition, about an upper limit, Preferably, it is 1000 mg / L or less, More preferably, it is 500 mg / L or less. By doing so, it is possible to further improve the temporal stability of the reducing power, and it is possible to obtain excellent drinking water from the viewpoint of ease of drinking. In addition, in this embodiment, the hardness of water is based on a WHO (World Health Organization) standard, and represents the content of magnesium ions and calcium ions in water. In this embodiment, the hardness of water is obtained by converting the magnesium ion concentration and calcium ion concentration in water into calcium carbonate concentration, and is calculated by the following equation.
Hardness = (Ca ion concentration × 2.5 + Mg ion concentration × 4) mg / L
Further, the magnesium ion concentration and the calcium ion concentration in water are measured by, for example, the EDTA method.

  In this embodiment, the absorbance at an optical path length of 10 mm and a wavelength of 396 nm of a test solution obtained by adding and mixing 0.75 mL of iodine solution to 100 mL of drinking water 360 days after production is preferably 1.0 or less. More preferably, it is 0.5 or less. By doing so, it is possible to obtain drinking water having a reducing power that is more excellent in stability over time.

<Water production method>
Next, a method for producing water according to the present embodiment will be described.
The water which concerns on this embodiment can be produced using a reducing agent, for example. The production of water using a reducing agent itself has also been performed in the prior art. However, the water according to the present embodiment can be obtained for the first time by highly controlling each factor such as the material and form of the reducing agent. In order to obtain water with low absorbance when mixing iodine solution with excellent reduction power over time according to the present embodiment, it is particularly important to highly control these factors.
Hereinafter, an example of the manufacturing method of the water which concerns on this embodiment is shown. However, the water production method of the present embodiment is not limited to the following example.

  The water production method described below uses a reducing agent formed by special heat treatment and powder water temperature treatment of shellfish such as oyster shells and natural zeolite.

  As the reducing agent, for example, powder obtained by heat-treating shellfish such as oyster shell and natural zeolite is mixed, ion-exchanged, dried and calcined.

More specifically, for example, a reducing agent obtained by the following method is used.
First, shells made of bivalves such as oyster shells are fired using an electric furnace. For example, after baking at 550 ° C. for 3 hours, baking at 700 ° C. for 5 hours, and further heating and baking at 840 ° C. for 8 hours. Next, a shell powder of about 10 microns is obtained by baking the product obtained by baking.

  On the other hand, natural zeolite is heat-treated. For example, after heat treatment at 250 ° C. for 2 hours, heat treatment is performed at 750 ° C. for 5 hours. Thereafter, the obtained product is processed to obtain a zeolite powder of about 10 microns.

  Next, the obtained shell powder and zeolite powder are mixed. At this time, the mixing ratio of the shell and zeolite is not particularly limited. For example, the shell is 90% of the total amount and the zeolite is 10% of the total amount.

  Next, the obtained mixture is subjected to ion exchange for 8 hours while maintaining an equilibrium temperature at a water temperature of 90 ° C. Thereafter, the ion-exchanged mixture is dried to a water content ratio of 3% and baked in an electric furnace at 840 ° C. for 5 hours. A reducing agent is obtained by the above procedure.

  Further, the reducing agent is not limited to those obtained by the above-mentioned method. For example, powders obtained by heat-treating shellfish such as oyster shells and natural zeolite are mixed and then ion-exchanged. Any material that has been dried, fired, and so on may be used.

Next, the obtained reducing agent is added to water. Specifically, the following method is used.
First, a powdery reducing agent is added to water in a certain formulation and then stirred. By doing so, the reducing agent can maximize the contact area with water. Moreover, ion exchange is performed between the reducing agent and water within the stirring time, and the reducing power can be transferred to water.
By doing so, the water according to the present embodiment is manufactured.

  As mentioned above, although embodiment of this invention was described, these are illustrations of this invention and various structures other than the above are also employable.

  Hereinafter, although an example and a comparative example explain the present invention, the present invention is not limited to these. In the present embodiment, hereinafter, drinking water will be described as an example.

(Example)
First, a powdery reducing agent was prepared by the method described below.
Shells made of bivalves such as oyster shells were fired at 550 ° C. for 3 hours using an electric furnace, then fired at 700 ° C. for 5 hours, and further heated and fired at 840 ° C. for 8 hours. Next, what was obtained by baking was processed with a rotating drum to obtain shell powder of about 10 microns.

  The natural zeolite was heat treated at 250 ° C. for 2 hours and then heat treated at 750 ° C. for 5 hours. Next, the obtained product was processed with a rotating drum to obtain a zeolite powder of about 10 microns.

  Next, the obtained shell powder and zeolite powder were mixed. At this time, the mixing ratio of the shell and the zeolite was 90% of the total amount of the shell and 10% of the total amount of the zeolite.

  Next, the obtained mixture was subjected to ion exchange for 8 hours while maintaining an equilibrium temperature at a water temperature of 90 ° C. Next, the ion-exchanged mixture was dried to a water content ratio of 3% and baked in an electric furnace at 840 ° C. for 5 hours to obtain a reducing agent.

0.5 g of powdery reducing agent was added to 1000 ml of water and stirred for 1 hour. Thereafter, the reducing agent was removed (filtered) to obtain the drinking water described in the examples.
In the measurement and evaluation shown below, this drinking water was stored for 30 days.

(Comparative Examples 1-9)
The drinking water used for the comparative example used the drinking water marketed (commercial drinking water 1-9).

  The measurement and evaluation shown below were performed on the drinking water of Examples and Comparative Examples.

(Evaluation item)
Absorbance titration: The absorbance of a solution obtained by adding and mixing 0.75 mL of iodine solution to 100 mL of drinking water was measured at an optical path length of 10 mm and a wavelength of 396 nm. As the iodine solution, isodinger gargle (manufactured by Meiji Seika Co., Ltd., containing 70 mg of Japanese popidone iodine (effective iodine 7 mg) in 1 mL of iodine solution) was used. The iodine solution further contains additives such as ethanol, 1-menthol and saccharin Na fragrance. In the absorbance measurement, “UV-1800” (manufactured by Shimadzu Corporation) was used as a spectrophotometer. The absorbance measurement was performed using a quartz cell under measurement conditions of 25 ° C.

Iodine solution titration: The color of a solution obtained by adding and mixing 0.75 mL of iodine solution to 100 mL of drinking water was observed and evaluated according to the following criteria.

A: Colorless and transparent.
X: Beige or light yellow.
□: Yellow.

Oxidation-reduction potential measurement: An ORP electrode (ORP electrode 9300-10D manufactured by HORIBA) was inserted into 100 mL of drinking water according to Examples and Comparative Examples 1-3, and ORP values were measured.

pH measurement: A terminal of a pH measuring device (PH510 type, manufactured by ASONE Corporation) was inserted into 100 mL of drinking water according to Examples and Comparative Examples 1-9, and pH was measured.

Hardness measurement: The hardness of water is calculated by converting the magnesium ion concentration and calcium ion concentration in water into calcium carbonate concentration, and was calculated by the following formula. In addition, the result measured by EDTA method was used for the magnesium ion concentration and calcium ion concentration in water.
Hardness = (Ca ion concentration × 2.5 + Mg ion concentration × 4) mg / L

  The evaluation results regarding the above evaluation items are shown in Tables 1 and 2 below together with the expiration date of each drinking water.

  As can be seen from Tables 1 and 2, the drinking water of Example 1 was superior in the temporal stability of the reducing power as compared with the drinking water of the comparative example.

Claims (6)

The following procedures (a) to (c)
(A) Prepare an iodine solution containing 70 mg of JP popidone iodine in 1 mL;
(B) A sample is prepared by adding and mixing 0.75 mL of the iodine solution to 100 mL of water,
(C) The absorbance at a wavelength of 396 nm of the sample is measured under the condition of an optical path length of 10 mm.
Water whose absorbance measured by is 1 or less.   The water according to claim 1, wherein the pH is 7 or more.   The water according to claim 1 or 2, wherein the redox potential is 200 mV or less.   The water according to any one of claims 1 to 3, having a hardness of 15 mg / L or more and 1000 mg / L or less.   The water according to any one of claims 1 to 4, which is used as drinking water.   The water according to any one of claims 1 to 4, which is used as a skin lotion.