JPH09173026A - Food additive and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a food additive excellent in cleaning action, hygiene and safety, capable of adjusting the concentrations of various ions in a food and improving the taste of a food or drinking water by precisely washing a granular ore containing vermiculite. SOLUTION: A granular ore containing vermiculite or a weathered product of vermiculite and granite is used as a raw ore. The raw ore is baked 2. A heavy material part of the baked material obtained by the baking 2 is precisely washed once or more times to give a food additive of a porous material having 0.1-80μm average pore diameter and 0.1-3.0m<2> /g specific surface area and containing 1×10<5> to 1×10<12> bacteria/mg silicate bacteria. City water is passed at 1L/minute flow volume through 1kg of the food additive and the visual turbidity of water 10 minutes after the water passage preferably has <=2 deg. and <=4 deg. hue prescribed by JIS K-0101.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a food additive, particularly a food additive obtained from natural ore and added to drinking water and the like, and a method for producing the same.

[0002]

2. Description of the Related Art Food additives for improving the quality of drinking water and the like are known. Examples of constituent materials of this food additive include activated carbon, barley stone, and porous ceramics. These have a deodorizing action, a bacteriostatic action, prevent the generation of scale, and have a purifying action such as adsorbing and removing pollutants, but for example, the pH of treated water, redox potential, electrical conductivity, It has almost no effect of adjusting various conditions such as various ion concentrations in water. In addition, even if there is such an action, it takes a long time for the action to appear,
Moreover, the sustainability of the action is also poor.

[0003]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a food additive capable of adjusting the concentration of various ions in food by using natural ore and a method for producing the same, in addition to the purifying action. Especially.

[0004]

This and other objects are achieved by the present invention which is defined below as (1) to (13).

(1) A food additive characterized in that a granular ore containing vermiculite is used as a raw ore, and the raw ore is subjected to precision cleaning at least once.

(2) A granular ore containing vermiculite is used as a raw ore, and at least one heavy portion of a fired product obtained by firing the ore is subjected to precision cleaning at least once. Characteristic food additives.

(3) The food additive according to (1) or (2) above, wherein the raw ore is mainly a weathering product of vermiculite and granite.

(4) The food additive according to any one of (1) to (3) above, wherein the food additive is a porous material and has an average pore diameter of 0.1 to 80 μm.

(5) The food additive according to any one of (1) to (4) above, wherein the food additive is a porous material and has a specific surface area of 0.1 to 3.0 m ² / g. Stuff.

(6) The food additive according to any one of (1) to (5) above, which contains a silicate bacterium.

(7) The food additive according to (6) above, wherein the content of the silicate bacteria is 1 × 10 ⁵ to 1 × 10 ¹² pieces / mg.

(8) Of the first action of releasing ions to the contacted water, the second action of lowering the redox potential of the contacted water, and the third action of increasing the conductivity and pH of the contacted water. The food additive according to any one of (1) to (7) above, which has at least one of the above functions.

(9) 1 Kg of food additive is passed through tap water at a water flow rate of 1 liter / min, and JIS K 0101 of water after 10 minutes is passed.
The food additive according to any one of (1) to (8) above, which has a visual turbidity of 2 ° or less.

(10) 1 Kg of food additive is passed through tap water at a flow rate of 1 liter / minute, and water after 10 minutes JIS K 0101
The food additive according to any one of the above (1) to (9), which has a chromaticity of 4 ° or less as defined in (4).

(11) The food additive according to any one of (1) to (10), which is contained in a water-permeable packaging material.

(12) A method for producing a food additive, characterized in that a granular ore containing vermiculite is used as a raw ore and the raw ore is subjected to precision cleaning at least once.

(13) A granular ore containing vermiculite is used as a raw ore, the raw ore is calcined, and at least one heavy portion of the calcined product obtained by the calcining is subjected to precision cleaning at least once. A method for producing a food additive, comprising:

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The food additive of the present invention and the method for producing the same will now be described in detail with reference to the preferred embodiments.

The first form of the food additive (production agent) of the present invention is a granular ore containing vermiculite (particularly mainly composed of vermiculite and granite), which is used as a raw ore. , Which has been subjected to at least one precision cleaning.

The food additive of the present invention (food additive)
In the second embodiment, the at least heavy portion of the fired product obtained by firing the same raw ore as described above is subjected to precision cleaning at least once.

As the raw ore, one containing granular flint (particularly weathered granite), preferably one containing such flint mainly. The raw ore preferably further contains a predetermined amount of vermiculite, and it is particularly preferable that the raw ore mainly contains weathered products of vermiculite and granite.

The content of vermiculite in the raw ore is not particularly limited, but is preferably about 5 to 80% by weight, more preferably about 10 to 50% by weight. By including such vermiculite, the stability of the effect of the present invention described later is enhanced, and the types of ions to be released are abundant. In addition,
The raw ore preferably contains silicate bacteria.

FIG. 1 is a process chart showing an example of a manufacturing process in the method for manufacturing a food additive of the present invention. The first and second aspects of the present invention will be described below based on the process diagrams.

[1] First Form After sieving the raw ore to adjust the grain size to some extent, washing (coarse washing) is performed (step 1).

The washing method is not particularly limited, but washing with water is preferable. In this case, the type of washing water used is not particularly limited, and may be any of tap water, industrial water, river water, lake water, groundwater, and the like.

Next, by a method such as sieving, the particles are selected (classified) to have a particle size described later (step 8). Next, precision cleaning is performed (step 6). This precision cleaning can be performed using the cleaning device 10 shown in FIG. 2, for example.

The cleaning device 10 includes a water supply pipe 11 and a water supply pipe 1.
It is composed of a drum 13 which rotates around 1 and a driving means 15 which rotates and drives the drum 13. At the position of the water supply pipe 11 inside the drum 13, a large number of water ejection holes 12 are formed.
Are formed.

A large number of drain holes 14 for discharging the water used for cleaning to the outside of the drum 13 are formed on the outer peripheral portion of the drum 13. It should be noted that the drain hole 14 has a size such that the article to be cleaned 20 does not pass through it, or
In addition, a filter (not shown) that allows water to pass through but not the object to be cleaned 20 is attached. As this filter, a mesh-like body such as a mesh is used.

The cross-sectional shape of the drum 13 may be circular or polygonal such as hexagonal or octagonal. Also,
The capacity of the drum 13 is not particularly limited. Drive means 15
Is a large-diameter pulley 16 attached to one end of the rotary shaft of the drum 13, a motor 19, a small-diameter pulley 17 attached to the rotary shaft of the motor 19, and a small-diameter pulley 17
And an endless belt 18 wound around a large-diameter pulley 16.

A granular object 20 to be cleaned is put in the drum 13, and the cleaning water is supplied through the water supply pipe 11, while the motor 19 is operated. The rotating force of the motor 19 is the small-diameter pulley 17,
It is transmitted to the drum 13 via the endless belt 18 and the large-diameter pulley 16, and the drum 13 rotates in a predetermined direction at, for example, 5 to 15 rpm. As a result, the object to be cleaned 20 in the drum 13 is agitated. On the other hand, the cleaning water supplied to the water supply pipe 11 is ejected from the ejection holes 12 into the drum 13 to wash the agitated object 20 to be washed, and then is ejected from the drain holes 14 to the outside of the drum 13. . By continuing such cleaning for a predetermined time, the object to be cleaned 20 is precisely cleaned, and fine powder and the like adhering to the surface of the object to be cleaned 20 and inside the pores are removed.

The type of washing water used for such precision washing is not particularly limited, but tap water is preferable. Further, an additive may be added to the washing water for any purpose. Further, the pH of the washing water is not particularly limited.
It is preferable to set the pH to about 9, particularly about pH 6.5 to 7.5.

The degree of precision cleaning is such that the turbidity and / or chromaticity of the obtained food additive will be values as described below. As an example, 30 kg of the object 20 to be cleaned is cleaned for about 3 to 6 minutes at a supply rate of cleaning water of 10 to 20 liters / minute.

By the first washing and precision washing, the mass of the substance (dry state) after the precision washing to the raw ore before washing (step 1) is about 26 to 85%. Is preferable, and it is more preferable that it is performed so as to be about 35 to 75%. If the mass ratio after precision cleaning is too small, it will be excessively washed, and when the obtained food additive is used, the amount of various ions released will decrease, and if the mass ratio after precision cleaning is too small, insufficient cleaning will result. However, the amount of fine powder remaining increases.

The object 20 to be cleaned, which has been subjected to precision cleaning, is dried (step 7), whereby the food additive of the present invention is obtained. The drying method is not particularly limited, and in addition to natural drying, drying by blowing cold air or warm air, or heat drying using an oven or the like may be performed.

[2] Second Form After sieving the raw ore to adjust the particle size to some extent, the same washing (coarse washing) as described above is performed (step 1).

Next, the washed raw ore is subjected to calcination (step 2). The firing condition is preferably a temperature of 6
The temperature is about 80 to 1220 ° C. for about 1 to 8 minutes, more preferably about 800 to 1100 ° C. for about 1.5 to 5 minutes, and further preferably 880 to 1050 ° C. for about 2 to 3.5 minutes. If the firing temperature is less than 680 ° C or the firing time is less than 1 minute, the effect of making the material porous by firing becomes insufficient, and if the firing temperature exceeds 1220 ° C or the firing time exceeds 8 minutes, the fired product Becomes brittle.

Such firing is usually performed in air, but the firing atmosphere may be performed in a gas containing an inert gas such as nitrogen gas or argon gas, or in an oxygen-rich gas.

The cooling method after firing is not particularly limited, and natural air cooling may be used. The cooling rate is not particularly limited, but is preferably about 1 to 50 ° C / min, and more preferably about 3 to 10 ° C / min. Within such a range, cracks and the like do not occur during cooling, and residual stress is also removed and reduced, so that uniformity and stability of the shape are improved. The average pore diameter and the specific surface area of the food additive described below can be appropriately adjusted by setting the above-mentioned firing conditions in firing.

When the raw ore contains silicate bacteria, most of them are destroyed by the calcination, but under the calcination conditions, a part of the silicate bacteria survives. Silicate bacteria have a strong fertility, and since the interior of food additives is an environment rich in water, nutrients, etc. for reproduction, even if the number of surviving bacteria immediately after baking is small, In the finally obtained food additive, silicate bacteria having the numbers of bacteria described below are present.

The calcined product obtained by the above-described calcining contains a heavy portion and a light portion (mainly vermiculite), and the heavy portion is selected and extracted (step 3). As an example of this sorting method, first, a method of sorting and recovering a heavy portion using a sieve, and second, a high-speed air flow is blown onto the burned material to blow off a light portion while stirring the fired material. And a method of collecting the remaining heavy part.

By carrying out such selection, the cleaning efficiency in the subsequent cleaning is improved and the quality of the obtained food additive is improved. In the present invention, the step 3
May be omitted, and the following steps may be performed on the entire fired product (including the heavy portion and the light portion).

Next, at least the heavy portion of the fired product is washed (step 4). This washing can be performed in the same manner as in the step 1. Next, it is dried (step 5). The drying method at this time is not particularly limited,
In addition to natural drying, drying by blowing cold air or warm air or heat drying using an oven or the like may be performed. Note that step 5, or steps 4 and 5 may be omitted.

Next, precision cleaning is performed (step 6). The method and conditions of precision cleaning are the same as those described in the first embodiment. In the case where the heavy portion in the baked product is mainly washed, the mass of the substance (dry state) after the precise washing is 35% with respect to the substance before the washing (step 4) for the same reason as above.
It is preferable that the treatment is carried out so as to be about 80%,
More preferably, it is performed so as to be about 72%.

The object 20 to be cleaned, which has been subjected to precision cleaning, is dried in the same manner as described above (step 7), whereby the food additive of the present invention is obtained. In the present invention, precision cleaning may be performed multiple times. In that case, each precision cleaning
It can be performed continuously or intermittently, and the conditions of each precision cleaning may be the same or different.

The food additives according to the first and second embodiments produced as described above are made of a porous material. The average pore diameter of this porous material is not particularly limited, but is preferably about 0.1 to 80 μm, more preferably about 1 to 30 μm, further preferably 2 to 20 μm.
Degree. By setting the average pore diameter in such a range, it is possible to continuously exhibit a particularly excellent substance adsorption and trapping action.

The specific surface area of the food additive made of a porous material is not particularly limited, but is preferably 0.1 to 3.0 m ^2.
/ g, more preferably about 0.3 to 1.0 m ² / g. By setting the specific surface area in such a range, it is possible to continuously exhibit particularly excellent adsorption-capturing action and ion releasing action of the substance.

Further, the food additive preferably contains a silicate bacterium. In this case, the content (number of bacteria) of silicate bacteria is 1 × 10 ⁵ to 1 × 10 ¹² /
It is preferably mg and 1 × 10 ⁶ to 1 × 10 ¹² pieces / mg
Is more preferable and 5 × 10 ⁸ to 1 × 10 ¹² pieces /
More preferably, it is mg. With such a content, the effects described below are exhibited particularly effectively.

Such food additives are usually granular. The particle size is not particularly limited, but the average particle size is preferably about 1 to 25 mm, more preferably 1.5 to
It is about 14 mm, more preferably about 2 to 9 mm.
The particle size may have some degree of variation.

It is to be noted that the granular food additive is further pulverized into a powder form, or the granular product or powder is combined to form, for example, any of granular, plate-like, rod-like (linear), tubular, block-like and the like. It can also be used by molding into the shape of.

Such food additives are used by being added to foods such as drinking water (hereinafter represented by drinking water) or brought into contact (immersion, water passage, filtration, boiling, etc.). At this time, substances that do not exist in the self (for example, sodium hypochlorite in tap water, proteins that cause scales, etc.) are adsorbed and captured, and, for example, aluminum ions, calcium ions, potassium ions, magnesium ions, sodium ions, Iron ion, silicon ion,
It produces an action of appropriately releasing at least one of various ions such as sulfate ion and chlorine ion. In addition, the redox potential of raw water (water before the addition of food additives) is lowered to reduce the pH.
Has the effect of increasing the electric conductivity. Such an effect is instantaneous with little temperature dependence of the raw water and is excellent in its sustainability.

When the food additive contains silicate bacteria, the silicate bacteria are adsorbed,
It has the function of decomposing the captured substance. This restores the ability to adsorb and capture a substance that is not present when water is stopped, etc., and the above-described action (performance) can be maintained for a long period of time. The presence of silicate bacteria also contributes to lowering the redox potential of raw water.

The food additive of the present invention has an advantage that it does not cause turbidity or coloration, because fine powder is almost removed by precision washing and the fine powder is not viscosified unlike ordinary ores. Suitable for use with drinking water.

That is, the food additive of the present invention was obtained by passing tap water through 1 kg of the food additive at a water flow rate of 1 liter / min.
The visual turbidity of water after 10 minutes specified by JIS K 0101 is preferably 2 ° or less, more preferably about 1 ° or less.

Further, the food additive of the present invention was prepared by passing tap water through 1 kg of the food additive at a water flow rate of 1 liter / min.
The water after minute has a chromaticity of 4 ° or less, preferably 3 ° or less, according to JIS K 0101.
It is more preferably 2 ° or less.

Further, since the food additive of the present invention emits a small amount of α rays and far infrared rays, it has an action of reducing the molecular population of water. The food additive according to the present invention is not limited to the one having the above-described structure, and has an action of releasing ions to the contacted water (first action) and an action of lowering the redox potential of the contacted water ( Second action) and one having at least one action (third action) of increasing the conductivity or pH of the contacted water (third action) (preferably having the first action, more preferably the first action). And those having the second action, and more preferably those having all of the first to third actions).

Further, using the pulverized product obtained by pulverizing at least the heavy part of the calcined product of granular ore (ore) containing vermiculite, all or part of the food additive having the above-mentioned constitution is used. It may be replaced with a food additive formed by granulation (preferably, a food additive formed by baking a granular solid product of a semi-solid obtained by kneading the pulverized product, water and a binder). . Further, the food additive of the present invention may be stored in a predetermined container or packaging material.

The wrapping material is preferably water permeable, and examples thereof include a sheet material which is wholly or partially water permeable and which is formed into a bag shape. Examples of the sheet material include a nonwoven fabric, a woven or knitted fabric, various papers, various filter media, an aggregate of short fibers, or a combination of any of these. Similarly, it is preferable that the containers other than the packaging material can also pass water.

[0058]

EXAMPLES Next, specific examples of the food additive of the present invention will be described.

Example 1 An ore mainly composed of vermiculite (also called “Ono ore”) produced in Ono-cho, Fukushima Prefecture was used as a raw ore. This ore contains about 21% by weight of vermiculite.
It is a weathered product of granodiorite. The raw ore contained silicate bacteria.

First, the raw ore was roughly washed with tap water and left in the air for 5 hours. Then, it was sorted (classified) by a sieve so that the particle size was about 3 to 7 mm.

30 kg of this granular material was subjected to precision cleaning using the cleaning device shown in FIG. The conditions for precision cleaning were such that tap water (pH = 7.1) was supplied at a rate of 10 liters / minute for 5 minutes, and the number of rotations of the drum was 10 rpm.

After precision cleaning, the washed product was naturally dried to obtain a granular food additive having an average particle size of about 5.0 mm. This food additive has an average pore diameter of about 2.8 μm and a specific surface area of
It was about 0.4 m ² / g. The number of silicate bacteria contained in this food additive (when stable) was analyzed and found to be about 1 × 10 ¹⁰ cells / mg.

In addition, 11.9 kg of food additive was obtained for 20 kg of raw ore. 0.1 kg of this food additive is filled in a packaging material formed by forming a sheet material made of a non-woven fabric (olefin-based spunbond) into a bag shape, and the opening of the packaging material is sealed to package the food additive. I made it a body.

Example 2 The same raw ore as in Example 1 was roughly washed with tap water and left in the air for 8 hours.

Then, using a furnace, the temperature in air is set to 995.
After firing at ℃ for about 3 minutes, it was air-cooled at a cooling rate of 4 ℃ / min. While stirring the obtained fired product, a high-speed air stream was blown onto it to blow off the light portion, and the remaining heavy portion was recovered.

Next, the heavy portion 20 of the recovered fired product
Kg was washed with tap water and air dried. Next, 20 kg of this granular material was subjected to precision cleaning using the cleaning device shown in FIG. The conditions for precision cleaning are tap water (pH = 7.
Washing was performed for 5 minutes at a supply rate of 10 l / min of 1), and the number of rotations of the drum was 10 rpm.

After precision cleaning, the washed product was naturally dried to obtain a granular food additive having an average particle size of about 4.3 mm. This food additive has an average pore diameter of about 2.5 μm and a specific surface area of
It was about 0.5 m ² / g. The number of silicate bacteria contained in this food additive (when stable) was analyzed and found to be about 5 × 10 ⁹ cells / mg.

It should be noted that for every 20 kg of heavy portion of the fired product, 1
2.5 Kg of food additive was obtained. This food additive 0.
The same packaging material as in Example 1 was filled with 1 kg, and the opening of the packaging material was sealed to obtain a food additive package.

[Experiment 1] A column having a water inlet and a water outlet was packed with 75 food additive packages of Examples 1 and 2, respectively, and tap water (raw water) was supplied from the inlet.
Was supplied to bring into contact with the food additive in the column and then flow out from the outlet. The amount of tap water supplied was 5 liters per minute.

When 30 minutes had passed from the start of water flow to the column, tap water (raw water) before passing through the column and water (treated water) flowing out from the column were sampled, and each was sampled by Kyoritsu Riken Laboratories. Water quality analysis was performed using an analyzer. The results are shown in Table 1 below.

[0071]

[Table 1]

As shown in Table 1 above, Examples 1 and 2
In the food additive of (1), it was confirmed that various mineral components (ions) were eluted from the food additive and added to the treated water.

[Experiment 2] 75 food additive packages of Examples 1 and 2 were packed in the same columns as described above,
In the same manner, tap water (raw water) was passed through this column at 1000 ml / min for 8 hours a day, and this was repeated every day.

From the start of water flow to the column, 2 days, 30 days, 6
At 0, 90, and 120 days, water (treated water) flowing out of the column was sampled, and its oxidation-reduction potential, conductivity, and pH value were measured.
The results for Example 1 are shown in Table 2 below, and the results for Example 2 are shown in Table 3 below.

[0075]

[Table 2]

[0076]

[Table 3]

As shown in Tables 2 and 3, the treated water treated with the food additives of Examples 1 and 2 had lower redox potential, higher conductivity and higher pH than raw water.
Moreover, it was confirmed that the effect was excellent in persistence.

[Experiment 3] In Experiment 2 described above, an experiment was conducted to investigate in detail the cause of the continued effect of improving the water quality.

A predetermined amount of tap water (raw water) was passed through a small column filled with 20 food additive packages of Example 2 (first passage), and after stopping the passage of water for 30 days, Similarly, under the conditions shown in Table 4, water flow was repeatedly restarted / stopped.

The tap water (raw water) before passing through the column and the water (treated water) flowing out of the column were sampled for each predetermined amount of water passed, and the residual chlorine concentration (next The concentration of sodium chlorite) was measured. The results are shown in Table 4 below.

[0081]

[Table 4]

As shown in Table 4, in the food additive of Example 2, sodium hypochlorite increased with the increase of the cumulative amount of water passing during each of the first through fourth water passages. Adsorption of
Although the capture ability decreases, sodium hypochlorite is adsorbed when water flow is restarted after water flow has been stopped for a certain number of days (when the second, third, and fourth water flow starts). It was confirmed that the capture ability was restored. This is because silicate bacteria present in food additives decompose the adsorbed and captured substances such as sodium hypochlorite during the suspension of water flow, and the decomposed products are released into the treated water. Is estimated to be

From the above, the food additive of the present invention can provide the above-mentioned water quality improving effect for a long period of time. In addition, when the same experiment was performed on the food additive of Example 1, the effect equal to or more than the effect of the food additive of Example 1 was obtained.

[Experiment 4] The same column as used in Experiment 1 was filled with 40 food additive packages of Example 1 and Example 2, respectively, and tap water (raw water) was introduced from the inlet of the column. And after contacting with the food additive in the column,
It was discharged from the outlet. The supply amount of tap water was 4 liters per minute.

At 10 minutes after the start of water flow to the column (integrated flow rate = 40 liters), the water (treated water) flowing out from the column was sampled and visually turbid according to the method specified in JIS K 0101. The degree and chromaticity were measured. Also,
The odor and taste of the sampled treated water were examined. The results are shown in Table 5 below.

[0086]

[Table 5]

As shown in Table 5, each of the food additives of Examples 1 and 2 had low turbidity and chromaticity of the treated water and no abnormal odor and taste. Therefore, it was confirmed that no pollution was generated.

The food additive of the present invention is not limited to that which is added to or brought into contact with drinking water, and can be used, for example, in various foods mainly containing liquids or raw materials of foods.

[0089]

As described above, according to the food additive of the present invention, it adsorbs and captures substances not present in itself, purifies liquids such as foods, especially drinking water, and also improves pH and redox potential. , Various conditions such as electric conductivity and various ion concentrations can be adjusted. Moreover, the onset speed of such actions and effects is relatively fast, and its durability is excellent.

In particular, the average pore size of food additives is 0.1 to 10.
80μm or specific surface area 0.1-3.0m ² / g
In the case of, the above-mentioned action and effect become more remarkable. When the food additive contains a silicate bacterium, the content (the number of bacteria) is 1 × 10 ⁵ to 1 × 1.
When the amount is 0 ¹² pieces / mg, it has a restoring force such as adsorption and trapping ability for substances that it does not have, so that the above-mentioned actions and effects can be exerted for a long period of time.

If the turbidity or chromaticity of the food additive used is below a predetermined value, the sanitary and safety levels are extremely high. From the above,
It is possible to improve the taste of foods, especially drinking water, add useful components such as various minerals, and remove harmful substances such as sodium hypochlorite.

In addition, when the food additive of the present invention is stored in a packaging material or a container, it is easy to handle, for example, during installation, replacement, transportation and storage, and a certain amount of food additive is stored. By doing so, the amount of food additives used (appropriate amount used)
Can be easily and accurately grasped by the number of packaging materials and containers. Further, according to the method for producing a food additive of the present invention, it is possible to easily produce a food additive having the above characteristics, and it is suitable for mass production.

[Brief description of the drawings]

FIG. 1 is a process drawing showing a manufacturing process of a food additive of the present invention.

FIG. 2 is a cross-sectional side view showing a configuration example of a cleaning device.

[Explanation of symbols]

 1 to 8 steps 10 cleaning device 11 water supply pipe 12 ejection hole 13 drum 14 drainage hole 15 driving means 16 large diameter pulley 17 small diameter pulley 18 endless belt 19 motor 20 object to be cleaned

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication C02F 1/68 520 C02F 1/68 520V 530 530Z

Claims (13)

[Claims] 1. A food additive characterized in that a granular ore containing vermiculite is used as a raw ore and the raw ore is subjected to precision cleaning at least once. 2. A granular ore containing vermiculite is used as a raw ore, and at least one heavy portion of a fired product obtained by firing the ore is subjected to precision cleaning at least once. And food additives. 3. The food additive according to claim 1, wherein the raw ore is mainly a weathering product of vermiculite and granite. 4. The food additive according to claim 1, wherein the food additive is a porous material and has an average pore diameter of 0.1 to 80 μm. 5. The food additive according to claim 1, wherein the food additive is a porous material and has a specific surface area of 0.1 to 3.0 m ² / g. 6. The food additive according to claim 1, wherein the food additive contains a silicate bacterium. 7. The silicate bacteria content is 1
The food additive according to claim 6, which has a dose of × 10 ⁵ to 1 × 10 ¹² pieces / mg. 8. Among the first action of releasing ions to the contacted water, the second action of lowering the redox potential of the contacted water, and the third action of increasing the conductivity and pH of the contacted water. The food additive according to any one of claims 1 to 7, which has at least one action of. 9. A water flow rate of 1 liter per 1 kg of food additive
9. The food additive according to any one of claims 1 to 8, wherein tap water is passed for 10 minutes and the visual turbidity of water after 10 minutes is 2 ° or less as specified in JIS K 0101. 10. The tap water is passed through 1 Kg of the food additive at a flow rate of 1 liter / min, and the chromaticity of water after 10 minutes is 4 ° or less as specified in JIS K 0101. The food additive according to any one of 1. 11. The food additive according to claim 1, which is contained in a water-permeable packaging material. 12. A granular ore containing vermiculite as a raw ore,
A method for producing a food additive, which comprises subjecting the raw ore to precision cleaning at least once. 13. A granular ore containing vermiculite as a raw ore,
A method for producing a food additive, which comprises firing the raw ore and subjecting at least a heavy portion of the fired product obtained by the firing to precision cleaning at least once.