Cherry simple silicon window air-conditioned storage
2019-09-04 07:04:24
Easy-to-silient window air-conditioning storage is the use of non-toxic polyvinyl chloride modified atmosphere bags or bags made of plastic film, and then a silicon window film that can automatically adjust the gas composition in the books is installed on the airbag to control the gas composition and extend the fruit. A method of storage period. The principle is to rely on the respiration of the fruit itself to reduce oxygen, increase the concentration of carbon dioxide, and use the gas permeability of the bag or silica window to select the permeability of the gas, adjust the composition of the storage atmosphere, and achieve spontaneous atmosphere. This method is also based on low temperature storage, simple operation, low cost, and good preservation effect.
(a) Select a suitable modified atmosphere storage bag. There are two types of commonly used storage bags for storing cherries, one is a non-toxic PVC non-silicon window, and the single layer thickness of the bag is 0.04 mm. The atmosphere-modified bags of this material are relatively resistant to low temperatures. The other type is called a silicon window air-conditioned bag, and the silicon window is made of a silicone rubber film. At present, most of the silicon window bags use non-toxic polyvinyl chloride film and silicon rubber film heat sealing, its specifications are mostly 60cm40cm or 40cm40cm, capacity of 5-10kg. There are finished products on the market.
(b) fruit processing, bagging. The pre-cooled cherry fruit is soaked in 0.01%-0.05% benzene solution for 3 minutes. The water is drained and bagged. The quantity is strictly in accordance with the indicated storage. After loading, lightly pressurize the atmosphere-adjusting bag to discharge the air in the bag, tie the bag mouth, and then put it into the outer packing box. When using silicon window bags to store on the shelves, be sure to expose the silicon window upwards, and do not overlap and cover, otherwise it will affect the effect of air-conditioning storage. Shelves should be covered with cardboard or soft material to prevent cherry damage.
(3) Control of warehouse temperature and humidity. Cold storage temperature is controlled between -1-1°C and relative humidity is controlled between 90%-95%.
(d) Detection and regulation of gas components in bags. During storage, the contents of oxygen and carbon dioxide in the modified atmosphere bag are recorded once a week. The inspection method is to select 3-5 sampling points for the modified atmosphere bags in different locations and use a disposable syringe to pull the bags directly to draw enough gas samples. The syringe is marked on the label with the sample number, and the syringe port of the sampling port is sealed with tape. The sample number, oxygen concentration, and carbon dioxide concentration must be recorded in detail when measuring a sample of gas.
Tests have shown that a high carbon dioxide environment is conducive to the storage and preservation of cherries, and the oxygen concentration is not very strict. In the low oxygen environment below 10%, the carbon dioxide concentration is required to be between 10% and 25%. If the concentration of oxygen in the bag is too high and the concentration of carbon dioxide is low, check whether the bag is tightly fastened, whether the bag is broken or not, whether the bottom of the ironing bag is cracked, whether the heat-sealed silicon window cloth is separated, etc. . If none of the above conditions are detected, it is necessary to consider whether the area of ​​the rubber window of the silicon window is too large, and whether the silicone coating of the film surface is even, and it is possible to seal a part or all of the silicon window with a normal tape or tape. If the concentration of carbon dioxide in the bag is too high, unfasten the bag and use your hands to shake a few bags, fill in some air, and tighten the bag.
(e) Monitoring of storage indicators. Before the fruit is bagged, the hardness index and the solids index of the cherry fruit shall be measured, and records shall be made and marked on the side bag. Afterwards, the hardness index and the solids index are measured by regular sampling in conjunction with gas detection. If there is no change or a small change, it means that the storage effect is better. If the above two indicators change a lot, it means that the storage quality is reduced. It is necessary to take timely measures to get out of the store as soon as possible.
(a) Select a suitable modified atmosphere storage bag. There are two types of commonly used storage bags for storing cherries, one is a non-toxic PVC non-silicon window, and the single layer thickness of the bag is 0.04 mm. The atmosphere-modified bags of this material are relatively resistant to low temperatures. The other type is called a silicon window air-conditioned bag, and the silicon window is made of a silicone rubber film. At present, most of the silicon window bags use non-toxic polyvinyl chloride film and silicon rubber film heat sealing, its specifications are mostly 60cm40cm or 40cm40cm, capacity of 5-10kg. There are finished products on the market.
(b) fruit processing, bagging. The pre-cooled cherry fruit is soaked in 0.01%-0.05% benzene solution for 3 minutes. The water is drained and bagged. The quantity is strictly in accordance with the indicated storage. After loading, lightly pressurize the atmosphere-adjusting bag to discharge the air in the bag, tie the bag mouth, and then put it into the outer packing box. When using silicon window bags to store on the shelves, be sure to expose the silicon window upwards, and do not overlap and cover, otherwise it will affect the effect of air-conditioning storage. Shelves should be covered with cardboard or soft material to prevent cherry damage.
(3) Control of warehouse temperature and humidity. Cold storage temperature is controlled between -1-1°C and relative humidity is controlled between 90%-95%.
(d) Detection and regulation of gas components in bags. During storage, the contents of oxygen and carbon dioxide in the modified atmosphere bag are recorded once a week. The inspection method is to select 3-5 sampling points for the modified atmosphere bags in different locations and use a disposable syringe to pull the bags directly to draw enough gas samples. The syringe is marked on the label with the sample number, and the syringe port of the sampling port is sealed with tape. The sample number, oxygen concentration, and carbon dioxide concentration must be recorded in detail when measuring a sample of gas.
Tests have shown that a high carbon dioxide environment is conducive to the storage and preservation of cherries, and the oxygen concentration is not very strict. In the low oxygen environment below 10%, the carbon dioxide concentration is required to be between 10% and 25%. If the concentration of oxygen in the bag is too high and the concentration of carbon dioxide is low, check whether the bag is tightly fastened, whether the bag is broken or not, whether the bottom of the ironing bag is cracked, whether the heat-sealed silicon window cloth is separated, etc. . If none of the above conditions are detected, it is necessary to consider whether the area of ​​the rubber window of the silicon window is too large, and whether the silicone coating of the film surface is even, and it is possible to seal a part or all of the silicon window with a normal tape or tape. If the concentration of carbon dioxide in the bag is too high, unfasten the bag and use your hands to shake a few bags, fill in some air, and tighten the bag.
(e) Monitoring of storage indicators. Before the fruit is bagged, the hardness index and the solids index of the cherry fruit shall be measured, and records shall be made and marked on the side bag. Afterwards, the hardness index and the solids index are measured by regular sampling in conjunction with gas detection. If there is no change or a small change, it means that the storage effect is better. If the above two indicators change a lot, it means that the storage quality is reduced. It is necessary to take timely measures to get out of the store as soon as possible.
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