JP2008295437A - Triple-structured powdered green tea packaging body for long storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder green tea and freeze-dried tea which are suitable for simplified drinking, in a packaging form which withstands very long-term preservation tea. <P>SOLUTION: The triple-structured powdered green tea packaging body for long storage has a triple structure where a material to be stored is charged in a small bag under nitrogen gas seal, and the small bag is housed in a medium bag together with activated charcoal or high-temperature burned-conifer fly ash, and the medium bag is hermetically sealed in an outer bag under nitrogen gas seal so as to have a triple structure so as not to make the material lose its flavor or deteriorate easily. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

    The present invention relates to a sachet that can store powdered tea made from powdered tea leaves or a tea leaf component extract by freeze-drying for a considerable period of time.

    Traditionally, green tea is usually stored in a container such as a moisture-proof tea box or tea can, and it is also packaged in a tea bag form for portability or convenience, or the tea leaf extract can be stored in a can or Means to put in plastic bottles were taken.

    Tea leaves packed in tea bag form are weak in moisture resistance, and catechins, which are the main active ingredients of tea leaves, have the disadvantage of being highly oxidative and prone to deterioration among polyferres, and have poor long-term storage. Met.

  In order to eliminate such drawbacks, in the invention of JP-A-7-67530, a tea leaf extract is coated on the surface of raw tea, and further, an antioxidant for food such as vitamin C, spices, rice bran oryzanol or rice husk extract is added. Proposal of tea bag tea with high antioxidant properties by mixing.

  JP-A-2007-61036 treats a tea leaf extract with an anion-type ion exchange resin through which sulfite is passed for the purpose of a long-term storable tea beverage with no deterioration odor and stable color tone. Proposal of stuffed beverages.

In order to avoid deterioration due to oxygen in the air, tea leaves such as black tea, green tea, matcha tea, and cream powder are filled into a water-permeable sachet, and this sachet is put in an outer bag made of a gas barrier material and replaced with nitrogen gas. Thus, an invention (Japanese Patent Laid-Open No. 5-139472) has been made to provide a tea leaf package that does not deteriorate tea flavor and cream powder even when stored for a long period of time.
JP 7-67530 A JP 2007-61036 A Japanese Patent Laid-Open No. 5-139472

  For Japanese people, drinking tea is not just a luxury item, but also the fragrance of tea and the astringent nature of the tannin component, calms the mind and gives the heart stability. Bactericidal action, antipruritic action and intestinal regulating action can be obtained by catechin as a component, and vitamin C contained in a large amount of tea leaves can also be taken.

These features and actions of tea can be said to be particularly important in times of disaster, where anxious mental conditions and nutritional balance of eating habits tend to be poor.
However, since tannin and vitamin C are extremely oxidative, it is necessary to avoid touching the air even a little.
Various countermeasures against deterioration have been taken as in the above-mentioned conventional examples, but all of them require an extra manufacturing process such as tea leaf extract coating or ion exchange resin treatment, or a little more than usual by nitrogen-filled double packaging. It is of a level that enables long-term preservation, and cannot be kept for a very long period of 3 to 5 years.

  The present invention is always stored in an emergency take-out bag in case of a disaster, etc., and can be used for drinking just by dissolving it in hot water or water when necessary, without complicated manufacturing processes. We propose a tea package that can withstand storage for an extremely long period of time.

Originally, it is desirable to review and refill foods for emergency use every 1 to 2 years, but once prepared, it is generally left unattended for about 3 to 5 years. is there.
As in the invention of Japanese Patent Laid-Open No. 5-139472, a proposal has been made to put a small bag containing tea or the like into an outer bag made of a gas barrier material and to fill it with nitrogen gas. In this invention, the outer bag is adjacent. Due to wrinkles and kinks that occur when contacting or stuffing the product, the packaging material deteriorates over time due to aging and kinking, resulting in breaks in the wrinkle area and fine crinkles at the head of the scissors. Pinholes are created and sealing is lost.

  In order to avoid the inconveniences as described above, the basic structure of the present invention is to develop a triple-structured package in which an inner bag is interposed between a nitrogen-filled outer bag and a tea bag. What should be noted is that the fine charcoal wrapped with non-woven fabric is stored in the inner bag.

The charcoal used for the fine-grained charcoal can achieve its function with any charcoal, but it is desirable to use activated charcoal produced by treatment with an already widely used activator or high-temperature calcined charcoal.
Charcoal baked at low temperature contains oxygen and gas components, so the charcoal shows acidity, and the odor of various components such as charcoal vinegar peculiar to charcoal is not completely removed. Negative with drinks.
Charcoal is classified into low-temperature coal (500 ° C. or less), medium-temperature coal (500 to 800 ° C.) and high-temperature coal (800 to 1200 ° C.) depending on the firing temperature, and the characteristics are also quite different.

As the firing temperature rises, a large amount of gas escapes from the wood, so the proportion of carbon contained in the charcoal increases, and the charcoal properties change from neutral to alkaline.
Low-temperature calcined charcoal easily absorbs alkaline gas such as ammonia, whereas high-temperature calcined charcoal has a property of absorbing oxidant gas and the like well.

Coniferous high-temperature charcoal has an extremely large number of fine pores in its internal structure, and when gas enters there, it becomes difficult to diverge, which is said to have a high adsorption capacity.
A conifer is literally a tree with a sharp point, such as cedar, pine, fir, hiba, and cypress. .

Both hardwood high-temperature charcoal and coniferous high-temperature charcoal have a large number of micropores, but hardwood has more variable micropore size, and softwood has more uniform micropores.
However, broad-leaved trees contain more silica components than conifers, and the silica components elute during the firing process and block the micropores.

  In the case of Umegashi, which is a broad-leaved tree used as a raw material for Bincho charcoal, the cell wall is thick and dense, and heat shrinkage occurs in the firing process to block the fine pores, resulting in a low adsorption capacity.

  The larger the surface area per unit of charcoal, the higher the adsorption capacity. When listed in order of increasing surface area, activated charcoal ⇒ conifer charcoal ⇒ bamboo charcoal ⇒ hardwood charcoal (and ⇒ Bincho charcoal), the order of good charcoal as charcoal and the gas adsorption capacity are reversed.

  From these points of view, activated carbon and softwood high-temperature calcined charcoal have the best oxygen adsorption performance as fine-grained charcoal stored in non-woven fabric packaging in the inner bag. There is an advantage that

An embodiment of the tea-containing package according to the present invention will be described with reference to the drawings.
FIG. 1 shows a state in which a portion of the sealed sachet 1 containing the matcha tea 2 and filled with nitrogen gas is broken. The contents to be stored are preferably Matcha 2 but may also be tea leaves freeze-dried powder. The sachet 1 and the non-woven bag 4 containing activated carbon or fine-grained charcoal 3 are stored in an inner bag 5 as shown in FIG. 2 and heat sealed in a vacuum state to form a sealed inner bag 5.

  As the fine-grained charcoal 3, one obtained by baking a softwood at a high temperature of 800 ° C. to 1200 ° C. is preferable, but activated carbon may be used.

  Further, the inner bag 5 is accommodated in an outer bag 6 filled with nitrogen, and the outer bag 6 is heat-sealed to produce a triple-structured matcha package suitable for long-term storage. FIG. 3 shows a partially broken state of the outer bag 6 containing the inner bag 5 containing the matcha-containing small bag 1 in this way.

The outer bag 6 and the inner bag 5 are provided with a zipper portion, and can be resealed even after being opened once, and have a structure suitable for medium-term storage after opening.
Matcha tea to be filled in sachet 1 is suitable to be melted in 250 ml and used for drinking two cups. However, depending on the purpose, matcha for a large number of adults is filled in size, and the size gradually increases. A triple package may be formed by preparing a bag.

  As a material for forming the bag, a laminated body having a sufficient gas barrier property in which the inside is a heat-sealable vinyl layer and the outside is an aluminum foil is employed. As shown in FIG. 4, the sachet 1 and the inner bag 5 are formed by a two-layer structure in which an aluminum foil outer layer material 7 and a vinyl inner layer material 8 are combined.

  It is desirable that the outer bag 6 has a four-layer structure using two sets of the two-layer structure as shown in FIG. 5 in consideration of being easily damaged by physical influence from the outside.

The invention's effect

  Not only that the package has a triple structure, but also that it retains fine-grained charcoal inside in addition to filling with nitrogen, so it has excellent antioxidant properties and excellent odor component removal, and has been stored for an extremely long period of time. Also made it possible to provide a packaged green tea package that allows you to enjoy the fresh aroma and taste of tea.

  You can drink the stick-type sachets stored in the sachet just by dissolving them in water, so when climbing or hiking, you can take a lightweight stick matcha and melt it in the fresh water that is springing up. It is not only very convenient for portable use, but also suitable for permanent storage in an emergency take-out bag when a disaster occurs. This is effective not only for such permanent storage in each household but also for storing in a disaster storage warehouse in municipalities. In this case, it is preferable to store a large number of medium bags containing a large number of small storage bags in large bags.

  Thus, if the green tea packaging body of the present invention is always stored, it is natural that it is useful for the preservation party itself, and it can be immediately dealt with as an emergency relief supplies to a disaster area that suddenly occurred. So it is extremely useful.

It is a figure which shows the small bag which included the matcha tea. It is a figure which shows the inside bag which included the some sachet and the nonwoven fabric bag which accommodated the fine-grained charcoal. Partially cutaway view of outer bag 6 containing an inner bag containing a plurality of green tea-containing sachets It is a cross-sectional laminated sheet figure of the bag raw material which comprises a small bag and an inside bag. It is a section lamination sheet figure of the bag material which constitutes an outer bag.

Explanation of symbols

1 Small bag 2 Matcha 3 Fine coal 4 Non-woven bag 5 Medium bag 6 Outer bag 7 Aluminum foil layer 8 Vinyl layer

Claims (3)

  The green tea or tea leaf ingredient freeze-dried powder 2 is stored in a nitrogen-filled sealed sachet 1, and the non-woven bag 4 containing activated carbon or fine-grained charcoal 3 and the sachet are heat-sealed and stored in an inner bag 5 in a vacuum state. A triple-matched green tea package for long-term storage, wherein the inner bag is stored in an outer bag 6 filled with nitrogen, and the outer bag is heat-sealed.   3. The triple-matched green tea package for long-term storage according to claim 1, wherein fine-grained charcoal 3 baked at a high temperature of 800 ° C. to 1200 ° C. is stored in an inner bag 5.   2. The long-term package according to claim 1, wherein the sachet 1, the inner sack 5 and the outer sachet 6 have a two-layer structure in which a vinyl inner layer material and an aluminum foil outer layer material are set as one set or a four-layer structure which uses two sets in alternation. Triple structure green tea packaging for storage.