Method for manufacturing pure oxygen—containing diluted soju
The present invention relates to pure oxygen-containing soju and a manufacturing method thereof. The invention provides the pure oxygen-containing diluted soju, which has excellent economy and shows a greatly reduced degree of a hangover after drinking thereof, because the amount of lost oxygen is minimized by injecting the largest possible amount of oxygen while preventing the release of oxygen using a method of injecting oxygen, and the amount of dissolved oxygen in the soju is maximized by injecting fine oxygen bubbles at low temperature, as well as a manufacturing method thereof.
1. A method for manufacturing pure oxygen-containing diluted soju, comprising the steps of:
(1) preparing 95% ethyl alcohol;
(2) diluting the ethyl alcohol with brewing water to an alcohol concentration of 40-60% to make a first dilution;
(3) aging the first dilution at room temperature for 7-10 days;
(4) diluting the aged solution with brewing water to an alcohol concentration of 20-36% to make a second dilution;
(5) passing the second dilution through nine columns packed with activated carbon at a space velocity (SV) of 3-5 h −1 so as to deodorize and purify the dilution;
(6) filtering the purified dilution through a filter, thus preparing diluted soju;
(7) transferring the diluted soju of step (6) to a storage tank and then subjecting the diluted soju to a first pure oxygen injection process, in which the diluted soju is aerated with pure oxygen (99.8-99% purity) bubbles using an air stone placed in the storage tank;
(8) transferring the diluted soju of step (6) to a cooler, in which it is cooled to 15-20° C., and then subjecting the cooled soju is subjected to a second pure oxygen injection process, in which pure oxygen bubbles are sprayed into the cooled soju using an air stone;
(9) transferring the oxygen-injected soju of step (8) to a bottling unit, in which it is bottled;
(10) subjecting the bottled soju to a third pure oxygen injection process, in which pure oxygen is sprayed directly into the uncapped bottle containing the diluted soju; and
(11) transferring the bottled soju of step (10) to a capping unit, in which the bottle containing the diluted soju is sealed with a cap.
2. A method for manufacturing diluted soju containing pure oxygen comprises:
(1) preparing 95% ethyl alcohol;
(2) diluting the ethyl alcohol with brewing water to an alcohol concentration of 40-60% to make a first dilution;
(3) aging the first dilution at room temperature for 7-10 days;
(4) diluting the aged dilution with brewing water to an alcohol concentration of 20-36% to make a second dilution;
(5) passing the second dilution through nine columns packed with activated carbon at a space velocity (SV) of 3-5 h −1 so as to deodorize and purify the dilution;
(6) treating the purified dilution with far-infrared rays by passing it through one column packed with a far infrared-emitting carrier and silver particles at a space velocity of 25 h −1 ;
(7) adding, to the far-infrared-treated dilution of step (6), a syrup prepared from at least six food additives selected from additives provided in the Liquor Tax Law, in an amount of 0.01-2 vol % based on the total volume of the dilution;
(8) filtering the mixture solution of step (7) through a filter, thus preparing diluted soju;
(9) transferring the diluted soju of step (8) to a storage tank of a first oxygen supply unit and subjecting the transferred diluted soju to a first pure oxygen injection process, in which pure oxygen (99.8-99.99% purity) bubbles are aerated into the diluted soju using an air stone placed in the storage tank;
(10) transferring the diluted soju of step (9) to a second oxygen supply unit, in which the diluted soju is cooled 15-20° C. using a cooler, and then subjected to a second pure oxygen injection process, in which pure oxygen bubbles are sprayed into the diluted soju using an air stone;
(11) transferring the diluted soju of step (10) to a bottling unit, in which it is bottled;
(12) subjecting the bottled diluted soju to a third pure oxygen injection process, in which pure oxygen is sprayed directly into the uncapped bottle containing the diluted soju; and
(13) transferring the bottled soju of step (10) to a capping unit, in which the bottle containing the diluted soju is sealed with a cap.
3. The method of claim 2 , wherein the aeration in the first pure oxygen process is carried out at an oxygen flow rate of 2-8 l/min for 3-20, and the spraying in the second pure oxygen process is carried out at an oxygen flow rate of 2-8 l/min.
4. The method of claim 2 , wherein the first oxygen supply unit in step (9) comprises: the storage tank for receiving and storing the diluted soju; a pure oxygen supply pipe for supplying pure oxygen generated from an oxygen generator; a pressure gauge disposed at the pure oxygen supply pipe to control the supply pressure of oxygen; and the air stone placed in the storage tank so as to be connected to the pure oxygen supply pipe and serving to aerate the diluted soju with the pure oxygen bubbles.
5. The method of claim 2 , wherein the second oxygen supply unit in step (10) comprises: a soju transfer pipe for transferring the diluted soju subjected to the first pure oxygen injection process; the cooler for cooling the diluted soju subjected to the first pure oxygen injection process; a pure oxygen supply pipe for supplying pure oxygen generated from a oxygen generator; a pressure gauge 121 placed at the pure oxygen supply pipe so as to control the supply pressure of oxygen; and an air stone placed in the soju transfer pipe so as to be connected with the pure supply pipe 120 and serving to spray pure oxygen bubbles into the diluted soju.
6. The method of claim 2 , wherein the third oxygen supply unit in step 12 comprises: an air curtain for preventing the diluted soju from coming in contact with external air; a pure oxygen supply pipe for supplying pure oxygen generated from an oxygen generator; and an air nozzle for spraying the pure oxygen.