JPH0425775B2 - - Google Patents
Info
- Publication number
- JPH0425775B2 JPH0425775B2 JP62118777A JP11877787A JPH0425775B2 JP H0425775 B2 JPH0425775 B2 JP H0425775B2 JP 62118777 A JP62118777 A JP 62118777A JP 11877787 A JP11877787 A JP 11877787A JP H0425775 B2 JPH0425775 B2 JP H0425775B2
- Authority
- JP
- Japan
- Prior art keywords
- storage
- pressure
- torr
- carbon dioxide
- partial pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- Storage Of Harvested Produce (AREA)
- Storage Of Fruits Or Vegetables (AREA)
Description
【発明の詳細な説明】
技術分野
本発明は、青果物等を低減圧下でCA貯蔵する
方法に関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for CA storage of fruits and vegetables under reduced pressure.
従来技術
青果物等の保存期間を延長させるには、貯蔵雰
囲気の酸素濃度（分圧）を下げることが有効であ
る。そこで、貯蔵庫内を減圧して酸素分圧を下げ
る減圧貯蔵方法が提案されている。しかし、従来
の減圧貯蔵技術では、減圧度は約1/10気圧程度と
することが必要であり、耐圧の重構造の貯蔵庫が
必要となつて、建設費が高くなつてしまう。ま
た、運搬容器として貯蔵庫を使用する場合には、
重量が重く運搬効率が悪くなつてしまう。これら
の欠点のため、減圧貯蔵の普及が著しく阻害され
ているのが実状である。特開昭59−88041号公報
には、減圧により低酸素濃度として果実蔬菜類を
貯蔵し、貯蔵庫内の換気を極端に減らし、果実蔬
菜類の呼吸により放出される二酸化炭素により高
二酸化炭素濃度を実現して、低酸素でしかも高二
酸化炭素濃度雰囲気で減圧貯蔵する真空貯蔵法が
提案されている。しかしこの方法では、CA貯蔵
の考え方が取り入れられるとしているものの、本
質的に減圧貯蔵法に他ならず、やはり上記の欠点
を有している。Prior Art In order to extend the storage period of fruits and vegetables, it is effective to lower the oxygen concentration (partial pressure) in the storage atmosphere. Therefore, a reduced pressure storage method has been proposed in which the pressure inside the storage is reduced to lower the oxygen partial pressure. However, with conventional reduced-pressure storage technology, it is necessary to reduce the pressure to about 1/10 of an atmosphere, which requires a heavy, pressure-resistant storage structure, which increases construction costs. In addition, when using storage as a transportation container,
It is heavy and transport efficiency is poor. The reality is that these drawbacks have significantly hindered the widespread use of reduced pressure storage. Japanese Patent Application Laid-open No. 59-88041 describes a method of storing fruits and vegetables with a low oxygen concentration by reducing pressure, extremely reducing ventilation in the storage, and reducing the high carbon dioxide concentration with the carbon dioxide released by the respiration of the fruits and vegetables. A vacuum storage method has been proposed in which the material is stored under reduced pressure in an atmosphere with low oxygen and high carbon dioxide concentration. However, although this method claims to incorporate the concept of CA storage, it is essentially a reduced-pressure storage method and still has the above-mentioned drawbacks.
一方、庫内の貯蔵雰囲気を調整して保存期間を
延長する方法として、CA（Controlled
Atomosphere）貯蔵法が知られており、以下の
ような種々の方式がある。 On the other hand, CA (Controlled
Atomosphere) storage methods are known, and there are various methods such as the following.
(1) 密閉庫内で青果物の呼吸により、O2を減少、
CO2を増加させる。余剰CO2ガスはスクラバー
で吸着する（リンゴの場合はCA状態になるま
で20〜30日を要する）。(1) O 2 is reduced by respiration of fruits and vegetables in an airtight storage.
Increase CO2 . Excess CO 2 gas is adsorbed by a scrubber (in the case of apples, it takes 20 to 30 days to reach the CA state).
(2) プロパンガスを燃焼させて、低酸素、高二酸
化炭素の燃焼ガスとし、これを庫内に送り込
む。(2) Propane gas is combusted to produce low oxygen, high carbon dioxide combustion gas, which is then sent into the refrigerator.
(3) 庫内の空気でプロパンを燃焼させO2をCO2に
変え、このガスを再び庫内に戻す。余剰のガス
は活性炭などで吸着する。(3) Propane is burned in the air inside the refrigerator, converting O 2 to CO 2 , and this gas is returned to the interior of the refrigerator. Excess gas is adsorbed with activated carbon.
しかしながら、これらのCA法では、いずれも、
所定の雰囲気とするのに長時間を要したり、庫内
の供給ガスの組成が不安定でコントロールが難し
い等の問題があり、また、余剰のCO2の除去装置
が必要である。 However, in these CA methods,
There are problems such as it takes a long time to create a predetermined atmosphere, the composition of the supply gas inside the chamber is unstable and difficult to control, and a device for removing excess CO 2 is required.
発明の目的
本発明は、低減圧下で容易に低酸素−高二酸化
炭素雰囲気を作ることができる貯蔵方法を提供す
ることを目的とする。OBJECTS OF THE INVENTION An object of the present invention is to provide a storage method that can easily create a low oxygen-high carbon dioxide atmosphere under reduced pressure.
発明の構成
本発明の青果物等の貯蔵方法は、貯蔵庫内を
300から760torr未満に減圧し、貯蔵庫内に外部か
ら二酸化炭素ガスを導入して分圧を0.5〜76torr
の低酸素濃度雰囲気として保ち、青果物等を該貯
蔵庫内に収納、保存することを特徴とする。Structure of the Invention The method for storing vegetables, fruits, etc. of the present invention includes
Reduce the pressure from 300 to less than 760 torr, and introduce carbon dioxide gas into the storage chamber from the outside to reduce the partial pressure to 0.5 to 76 torr.
A low oxygen concentration atmosphere is maintained, and fruits and vegetables are stored and preserved in the storage.
以下、本発明についてさらに詳細に説明する。 The present invention will be explained in more detail below.
第１図は本発明の貯蔵方法の実施例を示す説明
図である。 FIG. 1 is an explanatory diagram showing an embodiment of the storage method of the present invention.
貯蔵庫１１には、排気口１３が設けられ、真空
ポンプなどから成る排気系１５に連結されてい
る。また、貯蔵庫１１は、CO2ガス導入口２１お
よび空気導入口１７を有し、それぞれ流量調節弁
２３，１９が設けられている。 The storage 11 is provided with an exhaust port 13 and is connected to an exhaust system 15 consisting of a vacuum pump or the like. Further, the storage 11 has a CO 2 gas inlet 21 and an air inlet 17, and is provided with flow rate control valves 23 and 19, respectively.
まず、排気系１５により貯蔵庫１１内を減圧す
る。減圧度は、O2分圧およびCO2分圧の設定値に
より決定される。次に、CO2ガス導入口２１から
希望する二酸化炭素分圧になるまでCO2ガスを貯
蔵庫内１１に導き入れれば、所望のCO2分圧およ
びO2分圧雰囲気を作ることができる。例えば、
大気圧下でO2およびCO2が10％の雰囲気と同じ
O2、CO2分圧（76torr）をもつ雰囲気を低減圧下
に作るときは、貯蔵庫１１内を362torrに減圧し、
次に438torrとなるまで二酸化炭素を導入すれば
よい。これにより、貯蔵庫内圧力＝438torr、O2
分圧＝76torr、CO2分圧＝76torrの貯蔵雰囲気を
実現できる。 First, the pressure inside the storage 11 is reduced by the exhaust system 15. The degree of pressure reduction is determined by the set values of O 2 partial pressure and CO 2 partial pressure. Next, by introducing CO 2 gas into the storage 11 from the CO 2 gas inlet 21 until the desired partial pressure of carbon dioxide is reached, a desired CO 2 partial pressure and O 2 partial pressure atmosphere can be created. for example,
Same as atmosphere with 10% O2 and CO2 under atmospheric pressure
When creating an atmosphere with O 2 and CO 2 partial pressure (76 torr) under reduced pressure, reduce the pressure inside the storage chamber 11 to 362 torr,
Next, carbon dioxide can be introduced until the pressure reaches 438 torr. As a result, the pressure inside the storage chamber = 438 torr, O 2
A storage atmosphere of partial pressure = 76 torr and CO 2 partial pressure = 76 torr can be achieved.
このように減圧度およびCO2の導入量を制御す
ることにより、O2分圧は大気圧下の空気のO2分
圧を上限とし、また、CO2分圧は大気圧を上限と
して、これらを適宜の値に設定することができ
る。 By controlling the degree of pressure reduction and the amount of CO 2 introduced in this way, the O 2 partial pressure has an upper limit of the O 2 partial pressure of air under atmospheric pressure, and the CO 2 partial pressure has an upper limit of atmospheric pressure. can be set to an appropriate value.
貯蔵庫の構造を簡略化するためには、比較的低
い減圧、つまり、300〜760torrとすることが必要
である。この場合、得られる酸素・二酸化炭素濃
度はある程度の範囲に制限されるが、貯蔵に有利
な低酸素−高二酸化炭素雰囲気を実現することが
できる。 In order to simplify the structure of the storage, a relatively low vacuum is necessary, i.e. 300-760 torr. In this case, although the oxygen and carbon dioxide concentrations obtained are limited to a certain range, it is possible to realize a low oxygen and high carbon dioxide atmosphere that is advantageous for storage.
また、貯蔵庫１１内の換気を連続して行なう場
合には、設定された酸素分圧および二酸化炭素分
圧比となるように流量調節弁１９，２３で空気と
CO2ガスの流量比を調整して導入しながら、所定
減圧度となるように排気系１５で排気すればよ
い。前記の具体例のように、庫内圧力＝438torr、
O2分圧＝76torr、CO2分圧＝76torrの場合には、
排気して庫内圧力を438torrに保ちながら、空気
１に対して二酸化炭素0.21の割合で庫内に導入す
ればよい。また、換気は庫内を大気圧に解放する
ことによつても行なえる。 In addition, when continuously ventilating the inside of the storage 11, the flow rate control valves 19 and 23 are used to adjust the air to the set oxygen partial pressure and carbon dioxide partial pressure ratio.
The exhaust system 15 may be used to exhaust the CO 2 gas to a predetermined degree of pressure reduction while adjusting the flow rate ratio of the CO 2 gas. As in the above specific example, the internal pressure = 438 torr,
If O 2 partial pressure = 76 torr and CO 2 partial pressure = 76 torr, then
It is sufficient to introduce carbon dioxide into the refrigerator at a ratio of 0.21 parts to 1 part of air while evacuating and maintaining the internal pressure at 438 torr. Ventilation can also be achieved by releasing the inside of the refrigerator to atmospheric pressure.
O2分圧、CO2分圧は、貯蔵される物によつて適
宜設定される。温度および湿度にもよるが青果物
の場合にはO2分圧を38〜76torr、CO2分圧を0.5
〜76torrとすることが望ましい。この範囲に貯蔵
庫内雰囲気を設定することにより、青果物が無酸
素呼吸により醗酵するのを防ぐとともに、青果物
の呼吸量および青果物の追熱ホルモンであるエチ
レンの発生量を抑制することができる。 The O 2 partial pressure and CO 2 partial pressure are set appropriately depending on the items to be stored. Depending on the temperature and humidity, for fruits and vegetables, the O 2 partial pressure should be 38 to 76 torr, and the CO 2 partial pressure should be 0.5
~76torr is desirable. By setting the atmosphere in the storage within this range, it is possible to prevent fruits and vegetables from fermenting due to anaerobic respiration, and to suppress the amount of respiration of fruits and vegetables and the amount of ethylene, which is a reheating hormone for fruits and vegetables, generated.
以上の説明では青果物を貯蔵する場合を中心と
して説明したが、本発明では貯蔵対象はこれに限
定されず、例えば下記のようなものにも適用する
ことができる。 In the above explanation, the case where fruits and vegetables are stored was mainly explained, but the storage object of the present invention is not limited to this, and can be applied to the following items, for example.
(1) 肉、魚貝類、その他生鮮食料品の保存貯蔵。(1) Preservation of meat, fish and shellfish, and other perishable foods.
(2) 穀物、飼料等の保存貯蔵。(2) Preservation and storage of grain, feed, etc.
(3) 野菜、花卉等の新鮮植物の保存貯蔵。(3) Preservation and storage of fresh plants such as vegetables and flowers.
(4) 切花、鉢物等の観葉植物の保存貯蔵。(4) Preservation and storage of ornamental plants such as cut flowers and potted plants.
(5) その他加工食品等の保存貯蔵。(5) Preservation and storage of other processed foods, etc.
また、本発明において貯蔵庫とは、倉庫のよう
な建造物のみを指すのではなく、貯蔵槽や運搬を
前提とした貯蔵容器内など、広く貯蔵空間全般を
含むものである。 Furthermore, in the present invention, the term "storage" does not refer only to buildings such as warehouses, but includes a wide range of storage spaces in general, such as storage tanks and storage containers intended for transportation.
発明の効果
本発明によれば、貯蔵庫内を低減圧とし、酸素
量を減らし、ここに二酸化炭素ガスを外部から導
入することにより、減圧度および二酸化炭素の導
入量を調節するだけで、容易に任意の低酸素−高
二酸化炭素濃度雰囲気を得ることができる。低減
圧度下で、簡便に低酸素−高二酸化炭素の雰囲気
を実現することができるので、耐圧の重構造は必
ずしも必要でなく貯蔵庫の耐圧構造を簡略化する
こともできる。Effects of the Invention According to the present invention, by reducing the pressure inside the storage chamber, reducing the amount of oxygen, and introducing carbon dioxide gas from the outside, it is possible to easily adjust the degree of pressure reduction and the amount of carbon dioxide introduced. Any low oxygen-high carbon dioxide concentration atmosphere can be obtained. Since a low oxygen-high carbon dioxide atmosphere can be easily achieved under reduced pressure, a heavy pressure-resistant structure is not necessarily required, and the pressure-resistant structure of the storage can also be simplified.
第１図は本発明の実施例を示す説明図である。
１１……貯蔵庫、１３……排気口、１７……空
気導入口、２１……CO2ガス導入口。
FIG. 1 is an explanatory diagram showing an embodiment of the present invention. 11...Storage, 13...Exhaust port, 17...Air inlet, 21... CO2 gas inlet.
Claims (1)
該貯蔵庫内に二酸化炭素ガスを貯蔵庫外から導入
して分圧を0.5〜76torrの高二酸化炭素−分圧を
38〜76torrの低酸素雰囲気として保ち、該貯蔵庫
内に青果物等を収納・保存することを特徴とする
青果物等の貯蔵方法。1 Reduce the pressure inside the storage from 300 to less than 760 torr,
Carbon dioxide gas is introduced into the storage from outside the storage to create a high partial pressure of carbon dioxide of 0.5 to 76 torr.
A method for storing fruits and vegetables, etc., characterized in that the fruits and vegetables, etc. are stored and preserved in a storage chamber in which a low oxygen atmosphere of 38 to 76 torr is maintained.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62118777A JPS63283538A (en) | 1987-05-18 | 1987-05-18 | Storage of vegetables and fruits or such |
| KR1019880005504A KR950007612B1 (en) | 1987-05-18 | 1988-05-12 | How to store fruits and vegetables |
| US07/193,912 US4894997A (en) | 1987-05-18 | 1988-05-13 | Method of storing fruits and vegetables |
| DE3851464T DE3851464T2 (en) | 1987-05-18 | 1988-05-17 | Storage process for fruits and vegetables. |
| EP88107848A EP0292834B1 (en) | 1987-05-18 | 1988-05-17 | Method of storing fruits and vegetables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62118777A JPS63283538A (en) | 1987-05-18 | 1987-05-18 | Storage of vegetables and fruits or such |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63283538A JPS63283538A (en) | 1988-11-21 |
| JPH0425775B2 true JPH0425775B2 (en) | 1992-05-01 |
Family
ID=14744818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62118777A Granted JPS63283538A (en) | 1987-05-18 | 1987-05-18 | Storage of vegetables and fruits or such |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63283538A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1145640A1 (en) * | 2000-04-10 | 2001-10-17 | Frieder Haaf | Gas treatment system and its use for treating food products and/or plants |
| KR101120496B1 (en) * | 2009-06-09 | 2012-06-27 | 대한민국 | The carbon dioxide pre-treatment apparatus for agricultural products |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60217858A (en) * | 1984-04-13 | 1985-10-31 | Ulvac Corp | Two-staged vacuum ca storage of fruit and vegetable |
| JPS60217857A (en) * | 1984-04-13 | 1985-10-31 | Ulvac Corp | Storage of fruit and vegetable |
-
1987
- 1987-05-18 JP JP62118777A patent/JPS63283538A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63283538A (en) | 1988-11-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |