JPH07327590A - Method and device for preserving citrus - Google Patents
Method and device for preserving citrusInfo
- Publication number
- JPH07327590A JPH07327590A JP12745894A JP12745894A JPH07327590A JP H07327590 A JPH07327590 A JP H07327590A JP 12745894 A JP12745894 A JP 12745894A JP 12745894 A JP12745894 A JP 12745894A JP H07327590 A JPH07327590 A JP H07327590A
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- Prior art keywords
- storage
- gas
- citrus
- temperature
- citrus fruits
- 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.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、柑橘類の保存方法お
よび保存装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for storing citrus fruits.
【０００２】[0002]
【従来の技術】一般に、青果物を、その鮮度を保持した
状態で長期間保存するために、ＣＡ貯蔵（Ｃｏｎｔｒｏ
ｌｌｅｄ Ａｔｍｏｓｐｈｅｒｅ Ｓｔｏｒａｇｅ）と
呼ばれる方法が知られている。2. Description of the Related Art Generally, in order to preserve fruits and vegetables for a long period of time while maintaining their freshness, they are stored in a CA (Contro
A method called "lled Atmosphere Storage" is known.
【０００３】この方法は、酸素および炭酸ガス濃度を通
常の空気におけるそれらの分圧より低く制御した貯蔵用
ガスを用いて貯蔵時の青果物の呼吸を抑制し、その鮮度
や品質を保持して貯蔵期間の可及的な延長を図る方法で
ある。This method suppresses the respiration of fruits and vegetables during storage by using a storage gas in which the oxygen and carbon dioxide concentrations are controlled to be lower than their partial pressures in ordinary air, and preserves their freshness and quality. This is a method of extending the period as much as possible.
【０００４】このようなＣＡ貯蔵方法は、オレンジ、グ
レープフルーツ、レモン、ウンシュウミカン（Ｃｉｔｒ
ｕｓ ｕｎｓｈｉｕ ＭARC.）等の柑橘類についても実
験され、また農林省果樹試験場報告（昭和４９年２月、
Ｂ第１号）等により報告がなされている。[0004] Such a method of storing CAs includes oranges, grapefruits, lemons, and oranges (Citr).
We also conducted experiments on citrus fruits such as us unshiu MARC., and report on the Fruit Tree Experiment Station of the Ministry of Agriculture and Forestry (February 1974,
B No. 1) and so on.
【０００５】また、果実類を収納した保存（冷蔵）室内
に、適当な温度と湿度条件を付与する手段としては、保
存室内に冷凍機、ファン、ヒータ、加湿器を取り付けた
装置が、特開平４−２１８３３２号公報に開示されてい
る。Further, as a means for imparting appropriate temperature and humidity conditions to a storage (refrigerating) room in which fruits are stored, a device equipped with a refrigerator, a fan, a heater and a humidifier in the storage room is disclosed in It is disclosed in Japanese Patent Publication No. 4-218332.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上記した従来
の果実等の青果類の保存方法では、柑橘類の皮から多量
に発生する水分が保存室内の湿度を過度に高め、またこ
のような高湿度の条件下に冷凍機から放出された冷気が
直接に柑橘類表面に触れたり、庫内の不均一な温度分布
によって柑橘類の表面に結露が生じ、これが腐敗や浮皮
の原因となるという問題点がある。However, in the above-mentioned conventional method for storing fruits and vegetables such as fruits, a large amount of water generated from citrus peels excessively raises the humidity in the storage room, and such high humidity is also present. There is a problem that the cold air discharged from the refrigerator directly touches the surface of the citrus under the conditions described above, and the uneven temperature distribution in the refrigerator causes dew condensation on the surface of the citrus, which causes rotting and rind. .
【０００７】また、果実類を収納した保存室は密閉され
た環境であるため、柑橘類の呼吸等の代謝産物としてエ
チレンガス等が発生し、このような代謝ガスが鮮度の維
持を困難にしているという問題点もある。Further, since the storage room for storing the fruits is a closed environment, ethylene gas or the like is generated as a metabolite such as respiration of citrus fruits, and such metabolic gas makes it difficult to maintain freshness. There is also a problem.
【０００８】そこで、この発明の課題は、上記した問題
点を解決し、柑橘類の皮の表面に結露が生じることを防
止すると共に、代謝ガスの速やかな排除を計り、腐敗、
浮皮および鮮度低下を可及的を抑制して、特に柑橘類に
対する優れた保存方法および装置を提供することであ
る。Therefore, an object of the present invention is to solve the above-mentioned problems, prevent dew condensation on the surface of citrus peel, measure the rapid elimination of metabolic gas, and putrefaction,
An object of the present invention is to provide an excellent preservation method and device, particularly for citrus fruits, by suppressing budding and deterioration of freshness as much as possible.
【０００９】[0009]
【課題を解決するための手段】上記の課題を解決するた
め、この発明においては、窒素９０〜９８％、酸素１．
７〜１０％、二酸化炭素０．２〜０．４％からなる柑橘
類の貯蔵用ガスを調製し、この貯蔵用ガスを一時的に調
整室に滞留させ、この調整室にて前記貯蔵用ガスの温度
を１〜５℃に調整すると共に湿度を８２〜９０％に調整
した貯蔵用ガスを、柑橘類の保管庫に供給して庫内を循
環させた後、排気する柑橘類の保存方法としたのであ
る。In order to solve the above problems, in the present invention, nitrogen is 90 to 98%, oxygen is 1.
A citrus storage gas composed of 7 to 10% and carbon dioxide 0.2 to 0.4% is prepared, and the storage gas is allowed to temporarily stay in the adjustment chamber. The storage gas, the temperature of which was adjusted to 1 to 5 ° C. and the humidity of which was adjusted to 82 to 90%, was supplied to a storage container for citrus fruits, circulated in the storage chamber, and then evacuated, which was a method for storing citrus fruits. .
【００１０】また、空気に窒素ガスおよび二酸化炭素を
添加して柑橘類の貯蔵用ガスを製造する調製装置を設
け、加湿器、除湿器および温度調節装置を付設した温・
湿度調整室を設け、前記調製装置で調製された貯蔵用ガ
スは前記温・湿度調整室を介して柑橘類の保管庫に連通
させ、この保管庫には庫内雰囲気の循環装置および排気
装置を設けてなる柑橘類の保存装置としたのである。Further, there is provided a conditioning device for adding nitrogen gas and carbon dioxide to air to produce a gas for storing citrus fruits, and a humidifier, a dehumidifier, and a temperature control device attached thereto.
A humidity adjusting chamber is provided, and the storage gas prepared by the adjusting device is communicated with a citrus storage via the temperature / humidity adjusting chamber, and this storage is provided with a circulation device and an exhaust device for the atmosphere inside the storage. It was used as a storage device for citrus fruits.
【００１１】[0011]
【作用】この発明に係る柑橘類の保存方法は、貯蔵用ガ
スの窒素、酸素および二酸化炭素を所定の組成とし、か
つ所定の温度条件下で貯蔵されている柑橘類の呼吸量が
減少し、糖類や酸の変化もなく、腐敗および浮皮現象が
発生し難い。The method for preserving citrus fruits according to the present invention has a predetermined composition of nitrogen, oxygen and carbon dioxide as a storage gas, and reduces the respiration rate of citrus fruits stored under prescribed temperature conditions to reduce sugars and sugars. There is no change in acid, and it is difficult for rot and skin to occur.
【００１２】また、柑橘類に触れる貯蔵用ガスは、調整
室にて予め所定の温度に調整され、かつ所定の湿度に調
整されているので、この貯蔵用ガスに触れる柑橘類の皮
の表面に結露が発生せず、腐敗や浮皮が発生し難い。貯
蔵用ガスは、柑橘類の保管庫内を循環した後、排気され
るので、柑橘類から呼吸等の代謝産物として発生するエ
チレンガス等が保管庫内に滞留せず、保管された柑橘類
の鮮度維持を図ることができる。Further, since the storage gas which comes into contact with the citrus fruits is adjusted to a predetermined temperature and a predetermined humidity in advance in the adjusting chamber, dew condensation is formed on the surface of the citrus peel which comes into contact with the storage gas. It does not occur, and it is difficult for rot and skin to occur. Since the storage gas is circulated in the storage room for citrus fruits and then exhausted, ethylene gas, which is generated as a metabolite such as respiration from citrus fruits, does not stay in the storage room, and the freshness of the stored citrus fruits is maintained. Can be planned.
【００１３】この発明に係る柑橘類の保存装置では、調
製装置で製造された適当な組成の貯蔵用ガスが温・湿度
調整室に滞留した際に貯蔵に適当な温度と湿度に調整さ
れる。このように組成、温度および湿度が調整されたガ
スは、柑橘類の保存に適当な状態に調製されているか
ら、保管庫に導入して直接に柑橘類に触れさせても過度
の冷却が起こったり結露することがなく、保管庫内の温
度・湿度分布を循環装置によって極めて均一に保てるの
で、柑橘類が変質し難い。また、柑橘類から発生する呼
吸等による代謝ガスは、排気装置で庫内に排出されるの
で、鮮度の低下を防止できる。In the storage apparatus for citrus fruits according to the present invention, when the storage gas having an appropriate composition produced by the preparation apparatus stays in the temperature / humidity adjusting chamber, the temperature and humidity are adjusted to be suitable for storage. Since the gas whose composition, temperature and humidity are adjusted in this way is prepared in a state suitable for the storage of citrus fruits, excessive cooling or dew condensation will occur even if it is introduced into a storage cabinet and directly contacted with the citrus fruits. Since the temperature and humidity distribution in the storage can be kept extremely uniform by the circulation device, it is difficult for citrus fruits to deteriorate. In addition, since the metabolic gas generated from citrus fruits due to respiration or the like is discharged into the storage by the exhaust device, it is possible to prevent the freshness from being lowered.
【００１４】[0014]
【実施例】柑橘類の保存方法の発明における柑橘類は、
その種類を特に限定するものでなく、ミカン科のミカン
亜科に属するミカン属Ｃｉｔｒｕｓ、キンカン属Ｆｏｒ
ｔｕｎｅｌｌａおよびカラタチ属Ｐｏｎｃｉｒｕｓに属
するものの果実であればよい。このうち、ミカン属が主
要なものである。[Example] The citrus fruits in the invention of the method for storing citrus fruits are
The type is not particularly limited, and there are citrus citrus and kumquat For belonging to the citrus subfamily of the citrus family.
Any fruit may be used as long as it belongs to tunella and Poncilus genus. Of these, the citrus genus is the main one.
【００１５】柑橘類の貯蔵用ガスは、窒素９０〜９８
％、酸素１．７〜１０％、二酸化炭素０．２〜０．４％
（％はモル％または容量％）に調製して用いる。The storage gas for citrus fruits is nitrogen 90-98.
%, Oxygen 1.7 to 10%, carbon dioxide 0.2 to 0.4%
(% Is mol% or volume%) and used.
【００１６】なぜなら、貯蔵用ガス中の窒素が９０％未
満では、呼吸量を充分に抑制できずに鮮度が低下し易く
なり、９８％を越える多量では、柑橘類に最低限で必要
な呼吸量が確保できないからである。貯蔵用ガス中の酸
素が１．７％未満では、柑橘類が腐敗し易くなり、１０
％を越える多量では、呼吸量が過度に多くなって鮮度を
維持できない。When the amount of nitrogen in the storage gas is less than 90%, the respiration rate cannot be sufficiently suppressed and the freshness tends to be lowered, and when the amount exceeds 98%, the minimum respiration rate required for citrus fruits is required. This is because it cannot be secured. If the oxygen content in the gas for storage is less than 1.7%, the citrus fruits will easily rot, and 10
If the amount exceeds%, the breathing volume becomes excessively high and freshness cannot be maintained.
【００１７】また、貯蔵用ガス中の二酸化炭素が０．２
％未満では、呼吸抑制の効果が低くなって好ましくな
く、０．４％を越える多量では、貯蔵された柑橘類の果
実と皮が分離する浮皮現象が生じ易くなって好ましくな
い。The carbon dioxide in the storage gas is 0.2
If it is less than 0.1%, the effect of respiratory depression becomes low, which is not preferable, and if it exceeds 0.4%, a buoyancy phenomenon in which the stored citrus fruit and the skin are separated easily occurs, which is not preferable.
【００１８】そして、調整室にて貯蔵用ガスの温度は１
〜５℃であり、湿度は８２〜９０％に調整することが好
ましい。なぜなら、貯蔵用ガスの温度を１℃未満に設定
すると、計器の精度と庫内の温度分布の関係で０℃以下
になる庫内区域が生じて、果実に低温障害を起こすおそ
れがある。５℃を越えると、貯蔵期間が３箇月を越える
ような条件では果実の腐敗する率が高まって好ましくな
いからである。Then, the temperature of the storage gas is 1 in the adjusting chamber.
It is preferable to adjust the humidity to 82 to 90%. This is because if the temperature of the gas for storage is set to less than 1 ° C, there is a possibility that a temperature inside the refrigerator will be 0 ° C or less due to the relationship between the accuracy of the measuring instrument and the temperature distribution in the refrigerator, which may cause low temperature damage to the fruit. This is because if the temperature exceeds 5 ° C, the rate of fruit spoilage increases under the condition that the storage period exceeds 3 months, which is not preferable.
【００１９】また、湿度条件は、前記温度条件に対応し
て変化するので、単独の条件として説明することは困難
であるが、前記温度範囲のうち比較的低温の条件でも８
２％未満の低湿度では生理的障害である虎斑病が発生し
易くなって好ましくない。また、比較的高温の条件でも
９０％を越える高湿度では、灰色かび病、黒腐病、浮皮
が発生し易くなって好ましくない。Further, since the humidity condition changes in accordance with the temperature condition, it is difficult to describe it as a single condition, but even if the condition is relatively low in the temperature range,
Low humidity of less than 2% is not preferable because tiger spot disease, which is a physiological disorder, is likely to occur. Further, even under relatively high temperature conditions, high humidity of more than 90% is not preferable because gray mold, black rot, and skin are likely to occur.
【００２０】この発明では、調整室を経由して上記した
温度および湿度に調整した貯蔵用ガスを、柑橘類の保管
庫に供給して庫内を循環させた後、排気する。In the present invention, the storage gas adjusted to the above-mentioned temperature and humidity is supplied to the citrus storage via the adjustment chamber, circulated inside the storage, and then exhausted.
【００２１】この場合、調整室および保管庫は、通常の
冷蔵庫の設備に用いられるような発泡樹脂等からなる断
熱材を天井や床、壁に敷設したもの、または小規模に行
なう場合はプレハブ方式で設置できるものであって、例
えば容積が１．９〜１６．６ｍ3 程度のものを採用して
もよい。In this case, the adjustment room and the storage room have a heat insulating material made of foamed resin or the like laid on the ceiling, floor, or wall, which is used in ordinary refrigerator equipment, or a prefabricated system when it is carried out on a small scale. in a can be disposed, for example, volume may be employed of about 1.9~16.6m 3.
【００２２】保管庫に供給する貯蔵用ガスの供給量は、
保管庫の容積、柑橘類の保管の形態（容器の形態）また
は保存量によって異なるので、一概に規定することはで
きないが、２０〜２４時間で冷蔵庫内容量分を供給する
ことを目安にして好ましい結果を得ている。The amount of storage gas supplied to the storage is
It cannot be unconditionally specified because it depends on the volume of the storage, the storage form of the citrus (form of the container) or the storage amount, but it is not possible to specify unconditionally, but it is preferable to supply the capacity of the refrigerator in 20 to 24 hours as a guide. Is getting
【００２３】貯蔵用ガスを庫内に循環させるには、保管
庫の上部に取り付けたファンにて、定期的または連続し
て雰囲気を攪拌し、保管庫内のほぼ全体に強制的に対流
を起こさせることが好ましい。排気は、前記した貯蔵ガ
スの供給量に見合う速度で適宜に行なうことが好まし
く、強制排気、自然排気の何れであってもよい。In order to circulate the storage gas in the storage, a fan attached to the upper part of the storage is used to periodically or continuously stir the atmosphere to force convection in almost the entire storage. Preferably. It is preferable that the exhaust is appropriately performed at a speed commensurate with the supply amount of the stored gas, and either forced exhaust or natural exhaust may be used.
【００２４】次に、この発明に係る柑橘類の保存装置の
実施例を添付図面に基づいて説明する。図１に示すよう
に、保存装置の実施例は、空気と窒素ガスおよび二酸化
炭素を混合調製する貯蔵用ガスの調製装置１を設け、加
湿器２、除湿器３および温度調節装置４を付設した温・
湿度調整室５を設け、調製装置１で調製された貯蔵用ガ
スＧは、温・湿度調整室５を介して柑橘類の保管庫６に
連通させ、保管庫６には庫内雰囲気の循環装置７および
排気装置８を設けたものである。Next, an embodiment of a storage device for citrus fruits according to the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, in the embodiment of the storage device, a storage gas preparation device 1 for mixing and preparing air, nitrogen gas and carbon dioxide was provided, and a humidifier 2, a dehumidifier 3 and a temperature control device 4 were attached. Warm
A humidity adjusting chamber 5 is provided, and the storage gas G prepared by the adjusting device 1 is communicated with the citrus storage 6 via the temperature / humidity adjusting chamber 5, and the storage 6 has a circulation device 7 for the atmosphere inside the storage. And the exhaust device 8 is provided.
【００２５】貯蔵用ガスの調製装置１は、酸素分離装置
１ａと、製造された低酸素分圧空気を外気と所定の割合
で混合する混合室１ｂとからなる。The storage gas preparation device 1 comprises an oxygen separation device 1a and a mixing chamber 1b for mixing the produced low oxygen partial pressure air with the outside air at a predetermined ratio.
【００２６】酸素分離装置１ａは、酸素分離機構を特に
限定して採用したものでなく、例えば、気体分離膜とし
てポリ（４−メチルペンテン−１）またはポリ（２，６
−ジメチルフェニレンオキシド）といったポリジメチル
シロキサン誘導体からなる酸素−窒素分離膜にに空気を
強制的に通過させ、分離された酸素を排気して窒素およ
び二酸化炭素の濃縮された空気を取り出す周知の酸素分
離装置を採用できる。市販の酸素分離装置としては、日
立製作所製の窒素−酸素分離装置を採用することができ
る。The oxygen separation device 1a is not limited to the oxygen separation mechanism, and may be, for example, poly (4-methylpentene-1) or poly (2,6) as a gas separation membrane.
-Oxygen-nitrogen separation membrane consisting of a polydimethylsiloxane derivative such as dimethylphenylene oxide) is forced to pass air, and the separated oxygen is exhausted to take out air enriched with nitrogen and carbon dioxide. The device can be adopted. As a commercially available oxygen separator, a nitrogen-oxygen separator manufactured by Hitachi, Ltd. can be adopted.
【００２７】温・湿度調整室５には、調製された貯蔵ガ
スを一時的に滞留させる気密容器内に、加湿器２、除湿
器３、温度調節装置４、温度計９、湿度計１０、酸素濃
度計１１を設けている。加湿器２は、フィルタを用いた
気化式のもの、遠心噴霧式、超音波式のいずれも周知の
加湿器を採用することができる。また、除湿器３は、凝
縮を利用した周知の低温電気自動除湿装置を採用するこ
とができる。In the temperature / humidity control chamber 5, a humidifier 2, a dehumidifier 3, a temperature control device 4, a thermometer 9, a hygrometer 10, and oxygen are provided in an airtight container for temporarily retaining the prepared stored gas. A densitometer 11 is provided. The humidifier 2 may be a vaporization type using a filter, a centrifugal spraying type, or an ultrasonic type, which is a well-known humidifier. Further, the dehumidifier 3 can employ a well-known low-temperature electric automatic dehumidifier utilizing condensation.
【００２８】温度調節装置４は、制御する温度が１〜５
℃の範囲で良いことから、ヒートポンプ式の空調機器を
採用して効率良く温度制御を行なうことができる。The temperature control device 4 controls the temperature in the range of 1-5.
Since the range of ℃ is good, it is possible to employ a heat pump type air conditioner for efficient temperature control.
【００２９】保管庫６は、断熱材を用い、かつ気密性の
高い一般的な貯蔵庫であればよく、その内部には庫内雰
囲気の循環装置７および排気装置８を設けている。ここ
で循環装置７は、ファン１２を有して上部から吹出しを
行ない、下部から吸気を行なうものを示したが、庫内雰
囲気が循環できるものであれば、どのような形式のもの
であってもよい。The storage box 6 may be a general storage box using a heat insulating material and having high airtightness, and a circulation device 7 and an exhaust device 8 for the atmosphere inside the storage box are provided therein. Here, the circulation device 7 has a fan 12 that blows air from the upper part and inhales air from the lower part, but any type of device can be used as long as it can circulate the atmosphere in the refrigerator. Good.
【００３０】排気装置８は、庫内上部の雰囲気を自然換
気するように開口部を形成したものであり、適宜に操作
弁１３を開閉操作して換気量を調整することができる。
なお、図中番号１４は逆止弁を示している。The exhaust device 8 has an opening so as to naturally ventilate the atmosphere in the upper part of the refrigerator, and the operating valve 13 can be opened / closed as appropriate to adjust the ventilation amount.
In the figure, numeral 14 indicates a check valve.
【００３１】〔実験例〕上記構成の実施例の柑橘類の保
存装置を使用して、１９９３年の１２月末から１９９４
年の５月までの約４箇月間、温州ミカン（Ｃｉｔｒｕｓ
ｕｎｓｈｉｕＭＡＲＣ．）を保存した場合の実験例を
以下に説明する。[Experimental example] From the end of December 1993 to 1994, using the storage apparatus for citrus fruits having the above-mentioned configuration
For about four months until May of the year Wenzhou mandarin orange (Citrus)
unshiu MARC. ) Will be described below.
【００３２】内容積１６．６ｍ3 のプレハブ冷蔵庫に
１．１ｋｗの冷凍機２台を設置したものを保管庫６とし
て採用し、内容積１．９ｍ3 のプレハブ冷蔵庫に１．５
ｋｗの冷凍機１台を設置したものを温・湿度調整室５と
して採用し、酸素分離装置１ａとして日立製作所製：窒
素発生機（モレキュラーシーブ活性炭を使用した圧力変
動サイクル式吸着分離法によるもの、窒素濃度９９％、
吐出流量２．６ｍ3 ／ｈ）を採用した。A prefabricated refrigerator with an internal volume of 16.6 m 3 equipped with two 1.1 kw refrigerators was adopted as the storage 6, and a prefabricated refrigerator with an internal volume of 1.9 m 3 had a capacity of 1.5.
Adopting one kw refrigerator as the temperature / humidity adjusting chamber 5, and Hitachi as oxygen separator 1a: Nitrogen generator (by pressure fluctuation cycle adsorption separation method using molecular sieve activated carbon, Nitrogen concentration 99%,
A discharge flow rate of 2.6 m 3 / h) was adopted.
【００３３】保管方法としては、温州ミカン（早生Ｓ
級、晩生Ｍ級および無選別品）１０ｋｇ（約６０〜１２
０個）をバラ詰めにしたプラスチックコンテナの１４４
箱を前記保管庫６に積み重ねて収容し、以下の（ｉ）、
（ii）の貯蔵温度・湿度条件で以下の（iii ）の保存ガ
スを１２リットル／分で供給して、保管庫６内を第４１
日〜第１１０日の約８０日間、窒素９０〜９８％、酸素
１．７〜１０％、二酸化炭素０．２〜０．４％からなる
貯蔵用ガス雰囲気内で貯蔵し、延べ１３３日間保存し
た。As a storage method, there are Satsuma mandarin (early S
Grade, late-stage M grade and unsorted product) 10 kg (about 60-12)
144 in a plastic container packed with 0 pieces)
The boxes are stacked and stored in the storage box 6, and the following (i),
Under the storage temperature / humidity condition of (ii), the storage gas of (iii) below is supplied at 12 liters / minute, and the inside of the storage box 6 is cooled to the 41st temperature.
It was stored in a storage gas atmosphere consisting of 90 to 98% of nitrogen, 1.7 to 10% of oxygen, and 0.2 to 0.4% of carbon dioxide for about 80 days from the 110th day to the 110th day, and stored for a total of 133 days. .
【００３４】 （ｉ）庫内温度 ２．０〜３．０℃、 （ii）庫内湿度 ８３〜９０％、 （iii ）保存ガス（供給ガス濃度）と供給量 貯蔵開始時〜３０日 普通空気（二酸化炭素０．０３〜０．０５％） ３１〜４０日 ＊ 酸素濃度 ７％、その他９３％ ４１〜１１０日 ＊ 酸素濃度１０％、その他９０％ １１０〜１３３日 普通空気 ＊ 酸素濃度は、供給開始後約６０時間で供給ガス濃度
と同濃度になる。(I) In-compartment temperature of 2.0 to 3.0 ° C., (ii) In-compartment humidity of 83 to 90%, (iii) Storage gas (supply gas concentration) and supply amount From the start of storage to 30 days Normal air (Carbon dioxide 0.03-0.05%) 31-40 days * Oxygen concentration 7%, other 93% 41-110 days * Oxygen concentration 10%, other 90% 110-133 days Normal air * Oxygen concentration is supplied About 60 hours after the start, the concentration becomes the same as the supply gas concentration.
【００３５】以上の試験結果は、腐敗果発生率と、外
観、食味によって評価し、表１にまとめて示した。な
お、評価に供する果実は、コンテナの最上段、最下段お
よび中段から、早生、晩生の果実を無作為に抽出した。
外観におけるいちょう果（萎縮して皺のあるもの）は、
中程度以上、浮皮は触感にて明らかなものを計数し、食
味は、いちょう果、浮皮果も含め、早生、晩生各２０果
を４名にて食し、食味の劣化がある果実を計数した。The above test results were evaluated according to the spoilage occurrence rate, the appearance and the taste, and are summarized in Table 1. As the fruits to be evaluated, early and late fruits were randomly extracted from the top, bottom and middle of the container.
Ginkgo fruits (those that are atrophied and wrinkled)
Medium or higher, the number of buoyant skins that were apparent to the touch was counted, and the eating habits of 20 early and late fruits including ginkgo fruits and rind fruits were eaten by 4 persons, and the fruits with deteriorated taste were counted.
【００３６】[0036]
【表１】 [Table 1]
【００３７】表１の結果からも明らかなように、実験例
の保存方法では腐敗果発生率が極めて低率であり、ま
た、いちょう果、浮皮果の発生割合も低く、保存状態と
しては極めて好ましいことが確認できた。As is clear from the results shown in Table 1, the storage method of the experimental example has a very low rate of spoilage and a low rate of generation of ginkgo fruits and pomegranate fruits, which is extremely preferable as a storage state. I was able to confirm that.
【００３８】[0038]
【効果】この発明は、以上説明したように、柑橘類の保
存方法および装置を、貯蔵用ガスの窒素、酸素および二
酸化炭素を所定の組成に整え、しかも適当な湿度条件で
保管庫内の温度分布にむらがないようにしたので、柑橘
類の皮の表面に結露が生じることを防止でき、腐敗、浮
皮および鮮度低下を可及的を抑制できるようになり、特
に柑橘類に対して優れた保存方法および装置となる利点
がある。As described above, the present invention provides a method and apparatus for storing citrus fruits by adjusting the storage gas nitrogen, oxygen and carbon dioxide to a predetermined composition, and further, keeping the temperature distribution in the storage cabinet under appropriate humidity conditions. Since there is no unevenness on the surface, it is possible to prevent the formation of dew condensation on the surface of the citrus peel, and to prevent spoilage, budding and deterioration of freshness as much as possible. It has the advantage of being a device.
【図１】実施例の保存装置の模式図FIG. 1 is a schematic diagram of a storage device according to an embodiment.
１ 調製装置 １ａ 酸素分離装置 １ｂ 混合室 ２ 加湿器 ３ 除湿器 ４ 温度調節装置 ５ 温・湿度調整室 ６ 保管庫 ７ 循環装置 ８ 排気装置 1 Preparation Device 1a Oxygen Separation Device 1b Mixing Chamber 2 Humidifier 3 Dehumidifier 4 Temperature Control Device 5 Temperature / Humidity Control Room 6 Storage 7 Circulation Device 8 Exhaust Device
Claims (2)
％、二酸化炭素０．２〜０．４％からなる柑橘類の貯蔵
用ガスを調製し、この貯蔵用ガスを一時的に調整室に滞
留させ、この調整室にて前記貯蔵用ガスの温度を１〜５
℃に調整すると共に湿度を８２〜９０％に調整し、前記
調整室を経由した貯蔵用ガスを、柑橘類の保管庫に供給
して庫内を循環させた後、排気することからなる柑橘類
の保存方法。1. Nitrogen 90 to 98%, oxygen 1.7 to 10
%, Carbon dioxide 0.2 to 0.4%, a citrus storage gas is prepared, and the storage gas is temporarily retained in the adjusting chamber, and the temperature of the storage gas is adjusted to 1 in the adjusting chamber. ~ 5
The storage of citrus fruits is performed by adjusting the temperature to 82 ° C. and adjusting the humidity to 82 to 90%, supplying the storage gas that has passed through the adjustment chamber to a storage container for citrus fruits, circulating the gas inside, and then exhausting the gas. Method.
して柑橘類の貯蔵用ガスを製造する調製装置を設け、加
湿器、除湿器および温度調節装置を付設した温・湿度調
整室を設け、前記調製装置で調製された貯蔵用ガスは前
記温・湿度調整室を介して柑橘類の保管庫に連通させ、
この保管庫には庫内雰囲気の循環装置および排気装置を
設けてなる柑橘類の保存装置。2. A preparation device for producing a citrus storage gas by adding nitrogen gas and carbon dioxide to air, and a temperature / humidity control chamber provided with a humidifier, a dehumidifier and a temperature control device, The storage gas prepared by the preparation device is communicated with the citrus storage via the temperature / humidity control chamber,
This storage is a storage device for citrus fruits that is equipped with a circulation device and an exhaust device for the atmosphere inside the storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12745894A JPH07327590A (en) | 1994-06-09 | 1994-06-09 | Method and device for preserving citrus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12745894A JPH07327590A (en) | 1994-06-09 | 1994-06-09 | Method and device for preserving citrus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07327590A true JPH07327590A (en) | 1995-12-19 |
Family
ID=14960431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12745894A Pending JPH07327590A (en) | 1994-06-09 | 1994-06-09 | Method and device for preserving citrus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07327590A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004286386A (en) * | 2003-03-24 | 2004-10-14 | Matsushita Electric Works Ltd | Storage amount detection device of repository and repository |
| JP2009153420A (en) * | 2007-12-26 | 2009-07-16 | Takenaka Komuten Co Ltd | Environmental control system |
| JP2018169124A (en) * | 2017-03-30 | 2018-11-01 | 宮崎県 | Vegetables and fruits storage device and vegetables and fruits storage method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01174366A (en) * | 1987-12-28 | 1989-07-10 | Aisin Seiki Co Ltd | Storehouse for fresh food |
| JPH02283239A (en) * | 1989-04-21 | 1990-11-20 | Daiwa Jitsugyo Kk | Method for keeping freshness of agricultural products |
| JPH04218332A (en) * | 1990-12-18 | 1992-08-07 | Fujita Toshio | Method for preserving fruits for long period and its apparatus |
-
1994
- 1994-06-09 JP JP12745894A patent/JPH07327590A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01174366A (en) * | 1987-12-28 | 1989-07-10 | Aisin Seiki Co Ltd | Storehouse for fresh food |
| JPH02283239A (en) * | 1989-04-21 | 1990-11-20 | Daiwa Jitsugyo Kk | Method for keeping freshness of agricultural products |
| JPH04218332A (en) * | 1990-12-18 | 1992-08-07 | Fujita Toshio | Method for preserving fruits for long period and its apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004286386A (en) * | 2003-03-24 | 2004-10-14 | Matsushita Electric Works Ltd | Storage amount detection device of repository and repository |
| JP2009153420A (en) * | 2007-12-26 | 2009-07-16 | Takenaka Komuten Co Ltd | Environmental control system |
| JP2018169124A (en) * | 2017-03-30 | 2018-11-01 | 宮崎県 | Vegetables and fruits storage device and vegetables and fruits storage method |
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