KR100701781B1 - Manufacturing method of green tea beverage - Google Patents

Abstract

An object of the present invention is to provide a method for producing a green tea drink excellent in refreshing feeling without generating a precipitate during storage and distribution.

To this end, the present invention, the step of separating and removing the solids and foreign matter contained in the raw water in the filtration process, the step of small grouping the population of water molecules in the small grouping process of heating, warming step, Step of extracting the difference, filtering the angle, cooling the extraction difference, dehydrating the extraction difference in the centrifugal dehydration process, reducing the extraction difference in the dehydration filtrate in the electrolytic reduction process, reduction treatment Green tea beverages are prepared by a process consisting of diluting the extracted tea liquid with a small group water produced in the water molecular small grouping treatment process, a microfiltration step, a sterilization and container filling step, and an inspection and packaging step.

It is expected that green tea, which is extracted from small groups of water, is treated with electrolytic reduction water, and thus, green tea beverages are widely used in manufacturing green tea beverages because the green tea beverages have improved penetrating power, improve the refreshing feeling, and do not produce precipitates even after long-term storage.

Green tea, small group water, green tea beverage, electrolytic reduction, tea extract, sediment

Description

Manufacturing method of green tea beverage

1 is a manufacturing process of green tea beverage

2 is a small grouping process chart of water molecules

3 is an electrolytic reduction process chart

<Explanation of symbols for main parts of drawing>

One; Electronic treatment tank 2; electrode

3; Insulator 4; Stainless steel sheet

5; Foundation concrete structure 6; grounding

7; Constant voltage generator (Electron charger)

7a; Variable resistor 7b; grounding

7c; Primary winding 7d; Iron core

7e; Secondary winding 8; Primary treatment water storage tank

9; Primary treated water transfer pump 10; Charging tower

11; Filler 12; Solenoid Magnetizer

13; Permanent magnetizer 14; Final treatment tank

15; Final treatment water transfer pump

20; Electrolyzer 21; Anode chamber

22; Cathode chamber 23; anode

24; Cathode 25; Diaphragm

N; North pole S; South pole

FI; Flow indicator

PCV; Pressure control valve

pHI; pH indicator

ORPI; Oxidation Reduction Potential Indicator

The present invention partially subdivids the hydrogen bonds of water molecules by a treatment step in which raw water is filtered through a suspended solid material and then small groups of water molecules are collected. Micro-clustered water (小 集 녹차 化) micro-clustered water extracted from the extract of the green tea was subjected to electrolytic reduction treatment mixed with water in small group water, followed by microfiltration and sterilization It relates to a method for producing green tea beverages.

Considering the following points in the preparation of green tea beverages are as follows.

1) Catechins (Epicatechin, Gallocatechin, Epigallocatechin, Epicatechin gallate, Epigallocatechin gallate, etc.) contain about 30 wt% of flavonol-type polyphenols in the dried green tea leaves. If left to cool by the precipitate is generated by the following reaction there is a problem that the quality of the product.

A) Polyphenolic compounds contained in green tea are oxidized to quinone compounds by catalysis of polyphenoloxidase in aqueous solution with high concentration of dissolved oxygen (DO), and quinone compounds are other organic substances. (Proteins, amino acids, etc.) and the following polycondensation reactions produce precipitates insoluble in water.

Polyphenol Compound + O ₂ --Polyphenoloxidase → Quinone Compound + H ₂ O ₂ . … ①

Quinone Compound + Organics ----- → Cotton precipitate insoluble in water ... … … … … ②

The reaction of ① and ② described above is caused by the same mechanism as the mechanism of formation of corrosive substances due to the inflow of fluids of plants and plants in the natural ecosystem. Since the reaction deteriorates the quality of the product, the green tea beverage should be prepared considering the following to prevent the reaction of ① and ②.

① If the dissolved oxygen concentration is high in water, the reaction of ① above is promoted, so that the water is deoxygenated so that the concentration of dissolved oxygen is less than 1 mg / l or injected with nitrogen (N ₂ ). It is preferable to perform the treatment.

② Polyphenoloxidase (Polyphenoloxidase) is weak to heat, so the heat treatment (heat) or roasting process of tea leaves should be thoroughly inactivated oxidase.

③ In order to lower the activity of oxidase, enzymes such as hemicellulase activity, lysolecithin, β-mannanase, and α-amylase are injected into the extract. It can produce clarified green tea beverage, but if you inject excessive amount, you should use proper amount because it lowers flavor.

④ Reducing materials such as L-ascorbic acid, sodium ascorbate, citric acid, malic acid, or electrolytic reduction treatment to reduce oxidation reduction (ORP) It is desirable to keep the Potential value in the range of -200 to +200 mV as much as possible.

2) Use of raw water with high hardness reacts with minerals such as iron (Fe), calcium (Ca) and magnesium (Mg) in the water to form insoluble precipitates.

Polyphenols (eg tannin) + minerals (eg iron) → polyphenolmineral salts (eg tannin)... ③

Iron (Fe), magnesium (Mg) in water; Raw water with high minerals (Minerals), such as polyphenol mineral salts are insoluble in water can be produced because the precipitate is not recommended to use high hardness raw water.

3) Polyphenol compounds such as tannins react with compounds such as caffeine to form insoluble precipitates in water at low temperatures (when cooling).

Tannin + Caffeine --------------------------- → Sediment… … … … … … … … … ④

Green tea is made by using a small group number of small hydrogen bonds in the water molecules and having a small Nuclear magnetic resonance ¹⁷ O-NMR value. When the beverage is prepared, it has the following characteristics.

① Small group water can improve the permeability as the surface tension decreases and improve the extraction power of green tea ingredients.

② improves the refreshment and improves the taste of water.

③ promote the body's absorption, excretion, and smooth blood flow to promote metabolism (新陳代謝).

④ The antioxidant activity is excellent because of the low Oxidation Reduction Potential (ORP).

⑤ In case of small grouping by magnetization treatment when the amount of divalent trivalent ferric salt such as FCC (Ferrous Ferric Chloride) in the water is about 2 × 10 ^-12 mole / ℓ, the treatment efficiency is improved. The longer the retention period.

The method of producing small groups with partial cut-off of hydrogen bonds of water molecules and having low ¹⁷ O-NMR value of nuclear magnetic resonance, treatment by constant voltage conductive tube applying low frequency low voltage low current, electromagnet or Magnetization by permanent magnet, electrostatic induction treatment, electrostatic treatment by DC high voltage, electrolysis treatment, high voltage high frequency discharge flame treatment, minus ion treatment, far infrared treatment, ultrasonic treatment, Mineralization treatment, high-speed impact treatment, high pressure treatment.

Among the above-mentioned small grouping treatments of water molecules, physical treatment such as treatment by constant voltage conductive tube, magnetization treatment by magnet, electrostatic induction treatment, electrostatic treatment by DC high voltage, far infrared treatment, ultrasonic treatment, high-speed impact treatment, and high pressure treatment The method has a high instantaneous treatment efficiency, but has a characteristic of returning to the original water state of bound water as time passes, and the chemical treatment method by dissolving mineral components has a low treatment efficiency but In addition, since there is a characteristic of long-term preservation by small groups of water, the small grouping treatment method of water molecules can be preserved for a long time while improving the treatment efficiency by treating two or more treatment methods in combination rather than treating with any single method.

In the manufacture of most green tea beverages, other than Korean Patent Registration No. 10-0195624, Japanese Patent Publication No. 2003-169603, and Japanese Patent Publication No. 2003-259806, the use of mineral water or general water with large aggregates of water molecules (Taste of water) has a problem of falling, and in the case of Korea Patent Registration No. 10-0195624, the green tea extract is left to cool for about 50 ° C. or less for a long time to induce the reaction of the aforementioned ① and ② to generate a precipitate. The method for producing green tea beverages after removing insoluble cotton precipitate in water may have a problem of degrading the quality of the product because the reaction of ① and ② described above may occur during distribution.

And hemicellulase activity as in Japanese Patent Application Laid-Open No. 8-228684, Patent Publication 2001-45973, Patent Publication 2001-204386, Patent Publication 2002-119209 and Patent Publication 2004-187613. Addition of enzymes such as α-amylase, lysolecithin, β-mannanase, or hydroxycarboxylic acid impairs the aroma and taste of green tea There is a problem.

The present invention is to solve the above problems by extracting the green tea component using a small group of small groups of water molecules in order to solve the above problems, and then electrolytic reduction treatment by cooling and dehydration to improve the taste (cooling feeling) and does not produce a precipitate It is an object of the present invention to provide a method for producing green tea beverages.

The present invention for achieving the above object, the step of removing the suspended solids, organic matter, free residual chlorine in the raw water, the small group of water molecules in the small grouping process of the water molecules, Warming step, differential extraction step, filtering the declination, cooling the extraction difference, dehydrating the extraction difference in the centrifugal dehydration process, reducing the extraction difference in the dehydration filtrate in the electrolytic reduction treatment process, The reduced extraction extract is characterized by consisting of dilution with small group water produced in the water molecular small grouping process, microfiltration step, sterilization and container filling step, inspection and packing step.

Tea is largely divided into unfermented tea, semifermented tea and fermented tea according to the manufacturing method.

Unfermented tea is a green tea (잎) that is heated by steam or fire to stop the activity of enzymes to prevent oxidation, and green tea is typical, and green tea is the heat of electric tea and cauldron heated using steam. Roasted boocho tea (釜 炒 茶; cauldron pot tea) is a typical example.

Semi-fermented tea is tea leaves exposed to the sun and dried in the shade to oxidize a part of the ingredients. When the fragrance is scented, oolong tea (烏 龍 茶) is typical.

Fermented tea is a leaf tea withered and rubbed well so that the leaves are sufficiently oxidized.

The manufacturing method of the electric tea which inactivates the tea tree oxidase by steaming is as follows.

1. Steaming and Cooling Process

The steaming loses the activity of Oxidase in the green leaves, removes the green leaves, maintains green color, generates the inherent flavor of green tea, and improves the tea leaf's flexibility. In order to facilitate dry operation, saturated water vapor close to 100 ° C is brought into contact with tea leaves for about 30 seconds, and then cooled to 35 ° C ± 2 by a cooling fan.

This is because the color of the tea leaves turn black when the temperature of the tea leaves rises from 37 ° C.

The heating time should be shorter the younger the leaves are, the longer the case of making deep green tea with improved green tea color and reduced bitterness, the quenching will improve the luster of the tea leaves.

The steamed tea leaves are dried and stirred at 35 to 45 minutes in a hot air at 95 to 100 ° C in an oil tank, and dried to 45 to 60 wt% to develop the characteristic color and flavor of green tea. It is a process to make the moisture of each part of tea leaves uniform and to dry it efficiently. Since the quality of the tea is mostly determined in this process, the work should proceed well.

In this process, drying presses the tea leaves and leaches the moisture inside to the surface of the tea leaves so that the entire leaf surface is covered with a thin film of moisture, and then applies a constant hot air to increase the moisture on the tea leaves surface while increasing the temperature of the tea leaves. It is a method of removing water without changing chlorophyll by maintaining it at ℃ ± 1.

Keep in mind that the process speeds up per minute while applying heavy pressure to the tea leaves at room temperature for 10 to 20 minutes in order to make the tea composition easy to break down and improve the shape by uniformly destroying the tissues of the tea leaves. It is a process to repeat pressing and rubbing (note) by rotating about 100-140 times.

Depending on the tea leaves, the pressure and rotation speed should be different. If the caution is excessive, the tea crumbs will become more bitter and bitter, and the bitter taste will be stronger. do.

The heavy oil process removes the water from the tea leaves and makes tea suitable for the next refinery process.The tea surface is stirred by stirring and pressing the tea leaves for 20-30 minutes in a hot air of 55-65 ℃ in a heavy oil machine. It is a process that balances the diffusion of water and internal moisture to dry the water content to 26 ~ 30wt%, and the drying of the water occurs until the middle stage of the process. Since the temperature of the tea or the exhaust temperature rises, the temperature is raised to around 36 ℃ when removing the tea leaves.

The oil refining process is a final finishing process of forming and drying by applying heat from the bottom while applying heavy pressure to the tea leaves. The oil refining process is dried up to 25% by weight in 40 minutes.

6. Drying Process

In the drying process, if the moisture content is high during maintenance, it is difficult to maintain the quality, so the drying process is performed with hot air of 70 ° C. or less so that the moisture content is 5wt% or less.

Dried tea with a water content less than 5wt% by drying is sifted or separated into a cutter to produce a tank.

In the cauldron, the manufacturing method of Bucho tea roasted with heat without water is as follows.

1. Squeeze process

In the quenching process, the oxidase of tea leaves is heated to a temperature of around 380 ° C in the cauldron, and then dehydrated by inactivation. The heat treatment temperature is too high, the tea leaves are burned. Temperature rise is important because temperature rises and becomes red.

2. Mindful Process

The process of equalizing the water content of the tea leaves and destroying the tea tree tissues to make them look good and shape. The degree of rubbing depends on the leaves, but the young leaves are light and the hard leaves are heavy.

3. Primary drying process

It is a process to make flavors, and it is made by direct heating to have the unique flavor of tea.

4. Second drying process

It is a process of making bent tea leaves, and it forms a shape by drying through rotation to make a unique shape of tea.

5. Final drying process

In the drying process, if the moisture content is high during maintenance, it is difficult to maintain the quality, so it is dried so that the moisture content is 5% or less.

As described above, green tea is inactivated by steaming the tea leaves with steam, and then roasted with heat in a dry tank and cauldron without water to inactivate enzymes. I never do that.

The core technology of the present invention is the small group number of which the above-mentioned difference is treated by the water molecule cluster with the ¹⁷ O-NMR value of the nuclear magnetic resonance of 60 Hz or less. Heating the micro-clustered water to extract the difference, and filtering-cooling-centrifugal dehydration treated the filtrate in the oxidation reduction process (ORP) Oxidation Reduction Potential (ORP) value range from +200 to -200mV The present invention relates to a method of manufacturing the treated green tea beverage, and the contents of the present invention will be described in detail with reference to the accompanying drawings.

In the raw water used in the present invention, after supplying mineral water or tap water having a hardness of 100 mg / l or less to a raw water storage tank, the concentration of suspended solids (SS; Suspended solid) is high. If the concentration of organic matter or free chlorine is high, organic matter and free chlorine are removed through an activated carbon packed column.

When the concentration of suspended solids, organic matter and free residual chlorine is low, the aforementioned filtration steps may be omitted.

In the present invention, since dissolved oxygen (DO) is removed in the electrolytic reduction treatment, there is no need to perform deoxygenation treatment separately, and iron (Fe), magnesium (Mg), calcium (Ca). Cations such as citric acid and cations such as tartaric acid and organic acids that produce chelate (chelate) complex salts are used as catholyte in the electrolytic reduction bath, so these treatments need not be treated separately.

When the raw water is introduced into the electronic treatment tank 1 of the small grouping process of the water molecules of FIG. 2, water from which foreign matters such as suspended solids, free residual chlorine or organic substances are introduced is discharged from the high-pressure generator (Electron charger) 7 A constant voltage of 3,000 to 5,000 (field strength of 0.3 to 15 KV / m) and a current of 0.4 to 1.6 μA were applied to the electrode 2 by applying an alternating constant voltage of When alternating and repeated to water molecules for a long time (more than 4 hours), the water molecules themselves vibrate and rotate repeatedly, and the hydrogen bonds of the water molecules are partially broken, resulting in nuclear magnetic resonance. ¹⁷ O-NMR measurement of Nuclear magnetic resonance is treated with microclustered water of 60 Hz or less.

The small group of water thus produced becomes high energy reducing water having a high alkaline high natural frequency.

The applied voltage of the constant voltage generator 7 is adjusted in accordance with the values of pHI (7.4-7.8) and ORPI (200 mV or less) provided in the intermediate treatment water storage tank 8.

The treated water in the intermediate treated water storage tank (8) is minerals, ceramics and minus that emit far-infrared rays with the intermediate treated water feed pump (9) in order to produce stable small-sized water capable of improving processing efficiency and long-term preservation. After charging and charging the filling column (10) containing a mixture of minerals or ceramics emitting magnetic ions, ceramics containing magnetic magnetite or magnetic ceramics, and divalent trivalent iron salts in the same weight ratio, the solenoid is processed. (Solenoid) sent to the magnetizer (12) and permanent magnetizer (13), and the magnetization process and treated with micro-clustered water, and part is returned to the electronic treatment tank (1), the rest is a small group number It is sent to the reservoir (16) and sent to the heating process and the extraction difference dilution process by a small-sized water transfer pump (17).

The capacity of the filling 11 to fill the packed column 10 is filled so that the residence time is 30 minutes or more.

The material of the electrolytic treatment tank 1 is made of stainless steel, and the inside is made of stainless steel filled with charcoal or activated carbon and magnetized magnetite ingots with high conductivity. (Stainless steel), the net of the electrode (2) is installed, the insulator (3) such as polyethylene (polyethylene), polyvinyl chloride (PVC), Styrofoam (installed), and the conductor and corrosion-resistant material under the insulator Phosphorus stainless steel plate (4) is installed between the foundation concrete (Concrete) structure (5), the stainless steel plate (4) is grounded (6) to the ground.

The solenoid magnetizer 12 is an alternating current of 0.5 to 5V in a coil wound in a cylindrical conduit of insulating material such as synthetic resin (PVC, PE, styrene resin, etc.), ebonite, FRP, Bakelite, or the like. When a low voltage of direct current is applied, a magnetic field is formed inside the coil, and when water passes through it, the water is treated as a small group water.

The permanent magnetizer 13 uses neodymium rare earth magnets magnetized with a magnetic flux density of 10,000 G (Gauss) or more.In the case of high flow rates, a permanent magnet is installed in the middle of the magnetic field. The distance between the magnets is 5mm or less, so that the magnetization efficiency is as high as possible.

In consideration of economical efficiency, even if the treatment efficiency is somewhat reduced, only one of the solenoid magnetizer 12 and the permanent magnet 13 may be installed.

And if the capacity of the treated water is large, the electronic treatment tank in which the net of the electrode 2 of stainless steel filled with charcoal or activated carbon and magnetized magnetite mass was built. 1) and the charging tower 10 filled with the filling 11 is installed in multiple stages for processing.

The small group water treated in the above-described small grouping process of water molecules is sent to the extraction difference dilution process, while some are sent to a heating process (heat exchanger) for extracting the difference from the boiler to 50 to 85 ° C. The warm water is sent to the differential extraction process.

In the liquid extraction process, 25 ~ 35kg of processed green tea is poured per 1㎥ (tons) of hot water, and the green tea components are extracted for 3 to 15 minutes while stirring about 1 to 10 times, and then 10 to 30 mesh (Mesh) ) And 100-200 mesh filters in order to remove the car shell.

The green tea extract with the shell removed is sent to a cooling process (preferably a plate heat exchanger), cooled to 20 ° C or lower, and then sent to a centrifuge rotating at 3,000 to 10,000 rpm to dehydrate the solid matter. The electrolytic reduction process is sent to the cathode chamber 22 of the electrolytic cell 20.

The electrolytic cell 20 of the electrolytic reduction treatment process is isolated between the anode chamber 21 and the cathode chamber 22 by a diaphragm 20, and the anode 23 of the anode chamber 21 is highly corroded. Corrosion resistance Titanium plate (TiO ₂ ) and Ruthenium oxide (RuO ₂ ) is coated using a DSA (Dimensionally stable anode) coating (Coating), the cathode 24 is hydrogen generation Iron, titanium, nickel with high overvoltage. If the electrode is coated with a nickel plate (Ranney nickel) of the active nickel on the metal plate, etc., the diaphragm (c) uses a cation exchange membrane that passes only the cation without passing the anion, and the electrolytic cell 20 is a corrosion-resistant material do.

In the operation of the electrolytic reduction process, a voltage of 3 to 20 V from the rectifier is applied to the positive electrode 23 and the negative electrode 24 so that the value of the ORPI (Oxidation Reduction Potential Indicator) of the negative electrode chamber 22 is in the range of +100 to -300 mV (extraction). In the liquid dilution process, the value of ORP is within the range of + 200 ~ -200mV) Apply current, and NaCl aqueous solution is generally used as electrolyte for the water supplied to the anode chamber 21. Since residual chlorine (HClO, CLO ⁻ ) may be mixed in the green tea beverage, in the present invention, 5-20 wt% of NaOH aqueous solution in the water flowing into the anode chamber 21 is in the range of 10-300 mg / l (actual NaOH). Injection concentration is determined according to the applied voltage in the rectifier, the value of ORP in the cathode chamber 22, the pHI value in the anode chamber 21) and discharged from the centrifugal dehydration process flowing into the cathode chamber 22. Diffusion extract, which is a dehydrated filtrate, is used as an electrolyte as L-ascorbic acid, citric acid, Reducing substances such as tartaric acid, malic acid, and succinic acid, and organic acids that generate minerals (Fe, Mg, Zn, Ca…, etc.) and chelating complex salts, have pHI of the cathode chamber 22. Supply the value in the range 7.2 to 7.8.

The organic acid supplied to the cathode chamber 22 is an aqueous solution in which L-ascorbic acid (vitamin-C) is mixed with at least one organic acid such as citric acid, tartaric acid, malic acid, succinic acid, and dissolved in water. The concentration is not important. An aqueous solution of 5-20 wt% is used.

In the electrolytic reduction process, the differential reduction water, which is the electrolytic reduction water with the redox potential adjusted to the range of +100 to -300 mV, is sent to the extraction difference dilution process to treat the small groups of water molecules in the small grouping process. Water is poured into the extraction difference (differential reduction water) 3 to 5 times and diluted.

The diluted tea liquor is subjected to microfiltration with a filter cloth of 0.5-5μ (micron), and then sent to the green tea beverage reservoir for storage.

At this time, if the ultrafiltration treatment is performed as in the filtration of drinking water, it is preferable not to perform the filtration process too high because it can reduce the quality of the product by filtering a considerable amount of green tea components.

Microfiltered green tea beverage is sterilized at 120-135 ℃ for 0.5-10 minutes, then sent to a container filling process, filled into a container (can or plastic bottle), inspected and then packaged and shipped as a product.

As described above, the present invention, after extracting the green tea with a small number of groups of small groups of water molecules, the green tea beverage treated with the electrolyzed source does not produce a precipitate even after long-term preservation while improving the freshness and flavor It is expected to have a widely used effect in green tea beverage manufacturing.

Claims (3)

(1) supplying mineral water or tap water to the raw water storage tank, and then removing suspended solids, organic substances and free chlorine in the filtration process; (2) The filtered filtrate is stainless steel filled with charcoal or activated carbon and magnetized magnetite ingots of high conductivity inside the electronic treatment tank 1 of stainless steel. A net of stainless steel electrode 2 is installed, and an insulator 3 such as polyethylene, polyvinyl chloride (PVC) and styroform is provided at the bottom, and a conductor and corrosion resistance under the insulator. A stainless steel sheet 4 is formed between the concrete structures 5, and the stainless steel sheet 4 is placed in the electronic treatment tank 1 of the small grouping process of water molecules grounded to the ground. And a high-voltage alternating current constant voltage is supplied from a constant voltage generator (Electron charger) 7 to a network of 3,000 to 5,000 (field strength of 0.3 to 15 mA / m) and 0.4 to 1.6 mA. Applying a current for 4 hours or more to transfer the treated water to the intermediate treatment water storage tank (8) The intermediate treatment water transfer pump 9 is a packing material in which minerals or ceramics emitting far-infrared rays, minerals or ceramics emitting negative ions, magnetic magnetite or magnetic ceramics, and ceramics containing divalent trivalent iron salts are mixed in the same weight ratio ( 11) is sent to the packed column 10 filled with a residence time of 30 minutes or more, and then treated, followed by insulating materials such as synthetic resins (PVC, PE, styrene resin), ebonite, FRP, and Bakelite. Solenoid magnetizer 12 for applying AC or DC low voltage in the range of 0.5 ~ 5V to coil wound on cylindrical conduit and magnetization of magnetic flux density over 10,000G (Gauss) Nuclear magnets are sent to the permanent magnet magnetizer (13) of the neodymium-based rare earth magnets, which are then magnetized and partially returned to the electronic treatment tank (1), and the remainder is sent to the small group water storage tank (16). Resonance; number of sub-groups of less than 60㎐ the measurement of the ¹⁷ O-NMR (核磁氣共鳴Nuclear magnetic resonance) (小集團水; Treatment with microclustered water, ③ Green tea processed by sending a part of the small group water that the group of water molecules were treated as a small group to a heating process (heat exchanger), supplying heat from a boiler, and sending hot water of 50 to 85 ° C to the liquid extraction process. Inject 25 to 35 kg per 1 ㎥ (tons) of hot water, extracting green tea components for 3 to 15 minutes while stirring about 1 to 10 times, (4) removing the difference while sequentially passing the extracted difference between 10-30 mesh and 100-200 mesh filters; ⑤ The green tea extract from which the shell is removed is sent to a cooling process (plate heat exchanger), cooled to 20 ° C. or lower, and then sent to a centrifuge that rotates at 3,000 to 10,000 rpm to dehydrate the solid matter. (6) The extraction difference liquid, which is a dehydration filtrate, is separated by a diaphragm 20 between the anode chamber 21 and the cathode chamber 22, and the anode 23 of the anode chamber 21 is titanium oxide on a titanium plate. Dimensionally stable anode (DSA) electrodes coated with (TiO ₂ ) and Ruthenium oxide (RuO ₂ ) are used, and the cathode 24 is coated with Ranney nickel, an active nickel, on a metal plate. An electrode having a high hydrogen generation overvoltage is used, a diaphragm is used as a cation exchange membrane, and the electrolytic cell 20 is a cathode chamber 22 of an electrolytic reduction process step using a corrosion resistant material. L-ascorbic acid mixed with organic acids of citric acid, tartaric acid, malic acid, and succinic acid as an electrolyte. The pHI value of is supplied in the range 7.2 ~ 7.8, and the NaOH aqueous solution is supplied to the anode chamber 21 as an electrolyte in water. Supplying a voltage of 3 to 20 V from the rectifier while supplying in the range of 10 to 300 mg / L, the value of ORPI (Oxidation Reduction Potential Indicator) of the cathode chamber 22 to the anode 23 and the cathode 24 is +100 to -300 kV. In the range (in the extraction liquid dilution process, the value of ORP is in the range of +200 to -200 mA), and the redox potential is in the range of +100 to -300 mA while applying a current. Producing differential reduced water which is reduced water; ⑦ the dilution of the difference between the reduced water of the electrolytic reduction water and the small group water produced in the small group treatment process of the water molecules into the differential reduction water to produce a diluted extraction difference, ⑧ After fine-filtering the diluted extraction difference with 0.5 ~ 5μ (micron) filter cloth and sending to the green tea beverage storage tank, ⑨ The fine filtered extract tea of the green tea beverage storage tank is subjected to high temperature sterilization treatment at 120-135 ° C. for 0.5-10 minutes, and then sent to the container filling process to be filled into the container, and then packaged after inspection and commercialized. Method for producing a green tea drink by the above-described process. The method of claim 1, wherein the green tea beverage is prepared by a process in which only one of the solenoid magnetizer (12) and the permanent magnet (13) is installed. The electrolytic treatment tank (1) and the packing material according to claim 1, wherein a net of electrodes (2) of stainless steel filled with charcoal or activated charcoal and magnetized magnetite mass is embedded. Method for producing a green tea beverage by the step of installing the packed column (10) filled with (11) in multiple stages.

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