JP2006075037A - Method for packaging dried persimmon together with organic deoxidant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for packaging dried persimmons together with organic deoxidant having no fear of making the dried persimmons fully ripened, sterilized and packaged turn brownish during preservation, and keeping their taste favorable. <P>SOLUTION: The method for packaging dried persimmons together with organic deoxidant comprises the following process: making fresh persimmons naturally afterripen; paring the fresh persimmons; forming a range of the pared persimmons, hooking the range of the persimmons on a drying rack or a drying place followed by drying and ripening the persimmons to obtain dried persimmons; sterilizing the obtained dried persimmons and a small bag charged with the organic deoxidant via far-infrared ray irradiation followed by housing both of them in a packaging bag or a packaging container each low in oxygen permeability; and sealing it. Moisture-dependent type organic deoxidant is used when packaging one dried persimmon, and self-reacting organic deoxidant is used when packaging several dried persimmons on a tray. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for wrapping dried cocoon, which is obtained by storing and packaging a well-ripened dried cocoon and an oxygen scavenger-containing sachet.

Dried persimmon is, peeled raw persimmon skin, bleaching, sterilization, or the sun drying is performed 15 to 30 minutes sulfur smoke steam for the purpose of insecticides, around 40 ℃, then gradually flame-dried at 60-70% humidity Then, the temperature is lowered in the middle to make the water uniform, and the drying is continued again in about one week. Recently, instead of thermal drying, sulfur fumigation is followed by far-infrared irradiation to shorten the processing days. In any case, it is necessary to suppress the residual amount as sulfurous acid to 0.03 g or less per 1 kg of the product. Sulfur fumigation often pollutes the environment with odors and acid air associated with the emission and leakage of sulfur fumes. In addition, there is a growing interest among consumers that the consumption of pollution-free and pesticide-free foods is effective in maintaining health. It is desired to improve.
On the other hand, in order to improve the shelf life of dried persimmons, vacuum packaging and nitrogen gas filling packaging have been carried out slightly. However, despite the low unit price of dried persimmons, large-scale facilities had to be installed, and the cost was high. In addition, iron-based oxygen scavengers, ethanol preparations, and desiccants have been frequently used to maintain the freshness of dried persimmons.

Oxygen scavengers are mainly used to remove oxygen in packaging bags by chemical reaction and maintain the quality of foods. Filling air-permeable bags with iron powder, ascorbic acid, activated carbon, etc. based on paper or plastic. It is common. As the oxygen scavenger, there are an iron type (inorganic type) using an oxidation reaction of iron or an iron compound and an organic type using an oxidation reaction of reductones such as ascorbic acid and an adsorption ability of activated carbon. Inorganic oxygen scavengers are safe, easy to handle, and inexpensive, but organic ones are not affected by metal detectors.
In addition, the oxygen scavenger contains the moisture necessary for the reaction with oxygen in advance and is a self-reactive type that begins to absorb oxygen as soon as it comes into contact with oxygen, and a dry that begins to absorb oxygen upon exposure to air. It is classified as a moisture-dependent type that does not absorb oxygen in the atmosphere and absorbs oxygen after contact with high-humidity air.
Iron-based oxygen scavengers not only swell dried straw due to the generation of carbon dioxide and ethylene, but also deteriorate the quality, and may generate carcinogenic substances due to the reaction between trace amounts of manganese in the oxygen scavenger and ethylene. . An iron-based oxygen scavenger can easily maintain an atmosphere having a low oxygen concentration of 0.1% or less if the oxygen absorbing capacity of the oxygen scavenger and the gas barrier property of the packaging material are appropriate. Further, a high barrier packaging material required for vacuum packaging or gas replacement packaging is not required.
There are many manufacturers of oxygen scavengers, and the freshness-preserving agents of AGELESS (registered trademark of Mitsubishi Gas Chemical Co., Ltd.) and Toppan Printing Co., Ltd. are mainly used.
AGELESS has a moisture-dependent type and a self-reactive type as a packaging form, but the main purpose of keeping freshness of dried persimmon is to prevent deterioration, mold prevention, discoloration, etc. (Example: Ageless F type, letterpress FT type) Use self-reactive type (example: Ageless Z type, letterpress C type) when packaging several raisins in one tray.

Problem: Very recently, harsh conditions have been demanded for dried straw from the viewpoint of ensuring food safety.
1. Since conventional oxygen scavengers are mainly composed of iron, they are detected by metal detectors. For this reason, there was a suspicion that metal pieces (needle, cutter blade) remained in the drying basket, which was inconvenient in shipment.
2. In the oxygen scavenger whose main component is iron, components such as manganese are also included. Dried persimmons (anpo persimmons) have a high moisture content of 40 to 50%, so they are fermented in packaging bags and generate harmful gases such as ethylene in warm rooms. It is said that carcinogens are generated when manganese and ethylene gas react. Because of this suspicion, iron-based oxygen scavengers should not be used.
3. Moisture-reactive iron-based oxygen scavengers have a deoxidation period of 0.5 to 1 day in a room at 25 ° C., which is convenient for maintaining freshness, but the same is true for oxygen scavengers whose main components are self-reactive organic substances. Under the conditions, it takes 3 to 4 days for deoxidation. This has too many problems in maintaining freshness.
It is an object of the present invention to provide a method for producing a well-ripened dried persimmon that has been sufficiently aged and sterilized and deaired.

  In order to achieve the above object, claim 1 of the present invention sterilizes a sachet filled with an organic oxygen scavenger by irradiating far infrared rays, and then stores both in a low oxygen permeable packaging bag or packaging container. A method for wrapping dried persimmon, characterized in that claim 2 uses a moisture-dependent organic oxygen scavenger in the case of a single persimmon wrapping, and self-reaction in the case of tray packaging of several persimmons A type of organic oxygen scavenger is used.

  1 above. And 2. A common solution is to employ a self-reactive oxygen scavenger whose main component is an organic substance (eg, ageless G type, letterpress C type). 3. In addition to bagging the dried persimmon, it is sealed with an organic oxygen scavenger, and then irradiated with far-infrared rays for 2 to 3 minutes in a room at 20 ° C to prevent deterioration, discoloration and gas generation. it can. There is no mold. Therefore, the above problems 1, 2, and 3 have been solved.

  The present invention relates to a dried persimmon that is sterilized by irradiating far-infrared rays with a dried persimmon obtained by natural ripening, peeling, drying and aging, and an organic oxygen scavenger, and then storing both in a packaging bag or packaging container for sealing. This is a packaging method in which a moisture-dependent organic oxygen scavenger is used in the case of packaging a single dried straw, and a self-reactive organic oxygen scavenger is used in the case of tray packaging of several dried straw. As a result, it is possible to maintain the flavor by maintaining the quality of the dried persimmon, preventing the growth of microorganisms, preventing insect damage, preventing ripening, and preventing discoloration.

Table 1 shows a comparative experiment between using an iron-based oxygen absorber and using an organic oxygen absorber.
The left column in Table 1 is for a single bee-dried rice cake, the right column is the average value for each three-packed, room temperature 20 ° C, expiration date: 14 days, and the oxygen inhalation amount of each oxygen scavenger means the absorption capacity To do.
Result (1) If you use an organic oxygen scavenger for the purpose of preventing deterioration, discoloration, mold, and gas generation
a. It is possible to accurately detect whether or not metal pieces remain in the dried straw.
b. Dried persimmons can be eaten without worrying about cancer-causing substances.
(2) In order to overcome the handicap that the organic oxygen scavenger is inferior to the iron oxygen scavenger, irradiate far red to the packaging pouch containing the dried straw and the organic oxygen scavenger. As a result, the dried potato bacteria are sterilized, the fermentation enzyme is suppressed, and no harmful gas is generated. Therefore, there is no browning of the color tone.

  As described above, the present invention naturally ripens the ginger, peels it off, forms and reams and dries it, and then irradiates and sterilizes the dried koji and the oxygen scavenger packaging sachet to seal both. It is possible to provide a method for wrapping dried persimmons that is aged, sterilized and deoxygenated, and has no fear of browning during storage, and maintains a good taste.

Claims (2)

  After sterilization of dried cocoons obtained by natural ripening, peeling, drying and ripening, and sachets filled with organic oxygen scavengers by far-infrared irradiation, both are stored in low oxygen permeable packaging bags or containers A method for packaging dried persimmons, which is characterized by being sealed.   2. The water-dependent organic oxygen scavenger is used in the case of packaging a single dried persimmon, and a self-reactive organic oxygen scavenger is used in the case of tray packaging of several dried persimmons. How to wrap the dried potatoes.