JPS61249381A - Method of preserving refined sake (liquor) - Google Patents

Abstract

PURPOSE:To carry out continuously a deoxidation reaction without eluting a deoxidant and to prevent deterioration in quality of refined SAKE(liquor), by preserving SAKE and deoxidant in a closed container. CONSTITUTION:The deoxidant (the top 1 and the bottom 3 consist of a material such as polyethylene, etc., the middle part 2 consists of a material such as microporous film, etc., and the deoxidant 4 is sealed) 6, subjected preferably to blister packing, is packed into the inside of the cap 5 and the bottom is sealed with the microporous film 7, etc., and a container is closed hermetically in such a way that SAKE is not brought into contact with the deoxidant.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for preserving sake. More specifically, the invention relates to a method for preserving sake, characterized in that a blister-packaged oxygen absorber or a double-packaged oxygen absorber is stored together with the sake in a closed container.

[Conventional technology]

In general, sake ages during storage and tends to suffer from quality deterioration such as discoloration and aging. Conventional methods for preventing these quality deteriorations include (1) lowering the storage temperature; (2) Remove dissolved oxygen. As a method (2) for removing dissolved oxygen, attempts have been made to add activated carbon, replace N2 gas, etc.

However, these methods are not perfect. As an alternative method, a method using an oxygen scavenger has been used, but the conventional method using an oxygen scavenger is not perfect. .

Generally, iron-based oxygen absorbers are often used, but
When the oxygen absorber and sake come into contact, alcohol and
Moisture transfer caused the oxygen scavenger to become wet, reducing the oxygen scavenging rate or stopping the oxygen scavenging reaction midway through. Furthermore, coloration of the sake due to the reaction between the organic acids in the sake and iron was unavoidable, making it difficult to implement this method on an industrial scale.

[Problem that the invention seeks to solve]

The present invention uses an oxygen absorber containing iron powder, ascorbic acid, erythorbic acid, catechol, etc. as its main ingredient in a sealed container together with refined sake, thereby preventing the oxygen absorber from eluting even when it comes into contact with the sake. Oxygen absorber that performs a continuous deoxidizing reaction, can be easily filled into small containers such as bottles and cans, has a good appearance, and does not have the feeling of contamination with foreign matter, and a pre-heating agent using the same. This law concerns methods for preserving raw sake, unprocessed sake, and general sake before shipment.

[Means for solving problems]

In order to solve the above-mentioned problems, the present inventors packed the oxygen absorber in a blister made of packaging material as shown in the drawing, and further wrapped the blister in double packaging and placed it in the space inside the airtight container. This led to the completion of the present invention.

Figure 1 shows an oxygen absorber packaged in a blister, with the upper part (1) and lower part (3) made of a packaging material with low air permeability and moisture permeability, and the part in between (2) made of an air-permeable packaging material. These problems could be solved by filling the packed oxygen scavenger into a camp with a hole in the bottom. That is, by inserting an air-permeable packaging material between packaging materials with low air permeability and moisture permeability, oxygen can be removed from the sides of the packaging material, thereby preventing the oxygen absorber from leaching into the alcoholic beverage.

Figure 2 shows that after filling the inside of the cap with this blister, the lower part of the cap is made of microporous film or polyester, nylon, or aluminum with holes.
By sealing with a composite film made of polypropylene laminated with a sealable plastic film such as polyethylene, alcoholic beverages and oxygen scavengers are more completely prevented from coming into contact with each other.

FIG. 3 shows a case in which the oxygen absorber is directly filled into the cap without blister packaging, and the cap is double wrapped. The cap has a double structure, and by sealing the inside and outside with a microporous membrane and providing a space, the contact between the oxygen scavenger and sake is prevented more completely.

The material of the cap here is polyethylene, which is usually used.
The microporous membrane that seals this cap is generally called a microporous film and has an air permeability of 0.
01-10000sec/100m1 preferably 1-1
000sec/100ml and allows only gas to pass through without liquid at normal pressure, such as Dura Guard (
USA, manufactured by Celanese), FP-2 (manufactured by Fukkasei), N0
P (manufactured by Nippon Petrochemicals), Nidoflon NTF (Nitto Electric Industries), Cellboa NWOI (manufactured by Building Block Chemical), Boertex (manufactured by Gore, USA), and Tyvek (manufactured by DuPont, USA).

In the present invention, plastic films or sheets made of polyethylene, polyethylene terephthalate, vinyl chloride, etc. are used as packaging materials with low air permeability and low moisture permeability as shown in (1) and (3) in FIG. 1, for example. Also (2)
Packaging materials with air permeability indicated by
A microporous film or the like is used. Furthermore (1)
It is also possible to use a combination of (2) and (3) by using a microporous film in (2) without using a packaging material with low air permeability and low moisture permeability.

As the oxygen scavenger, a conventional oxygen scavenger such as iron-based, hydrosulfide-based, ascorbic acid-based, etc., formed into an appropriate shape such as powder, granules, granules, tablets, etc., is used.

〔Example〕

The present invention will be explained below using examples.

Example 1 A hole was made in the cap of a glass bottle containing 1.81 g of unprocessed sake that had been pasteurized once, and a blister pack-shaped oxygen scavenger was filled into the cap, the bottle was sealed and stored at room temperature of 25° C. for 150 days.

Sensory evaluation of sake after 150 days showed that the overall quality was excellent, the absorbance indicating coloration was 0.033 at 430 mM, and 3. indicating the degree of ripening. D, G (3, deoxyglycosone) 0.0
83mM, dissolved oxygen 0. At 3 ppm of O, ripening did not proceed and the quality was well maintained. - Unprocessed sake that does not use an oxygen agent is not acceptable due to the integrated quality of sake, and the absorbance is 0.07.
, dissolved oxygen was 5.6 ppm3. D, G is 0.427mM
The quality deteriorated due to discoloration and aged aroma due to the progress of ripening.

Example 2 150 cc of commercially available sake was placed in a 200 cc sample bottle, a blister pack-shaped oxygen absorber was filled in the back of the cap, and the headspace oxygen removal rate and dissolved oxygen of the sake were measured. As a result, the headspace oxygen level was 0.0 after 4 days.
The dissolved oxygen content of sake was 0.02 p, p, m.

Example 3: 180 cc of commercially available liquor was placed in a 200 cc sample bottle, and the oxygen absorber packed in a blister pack and a packaging material consisting of OP coated oil-proof paper/PH/Warif/PR was immersed in the bottle for 30 days. The degree of coloration was compared by absorbance.

As a result, the absorbance of the sake soaked in the oxygen absorber in the form of a blister pack was 0.03 at 430 mμ, and no coloration was observed. The absorbance of the sample soaked in the sample was 0.07 due to the elution of iron, and it was colored yellow.

[Brief explanation of the drawing]

FIG. 1 shows a blister pack-shaped oxygen absorber used in the present invention. Figures 2 and 3 show the double packaging of the oxygen scavenger in a cap. FIG. 4 is a cross-sectional view for explaining a preferred example of applying the present invention to containers such as bottles and cans, and the symbols in the figure are as follows. 1 - Packaging material with low air permeability and moisture permeability 2 - Packaging material with low air permeability 3 - Packaging material with low air permeability and moisture permeability 4 - Oxygen absorber 5 - Cap (inner lid) 6 - Blister pack form Oxygen absorber 7 - Packaging material with air permeability (microporous film, etc.) 8 - Hole at the bottom of the cap 9 - Space 10 - Outer lid 11 - Container

Claims (1)

[Claims] 1. A method for preserving sake, which comprises storing the sake in a closed container together with an oxygen absorber. 2. Method according to claim 1, in which the oxygen absorber is packaged in a blister; 3. Method according to claim 1, in which the oxygen absorber is double packaged.