In recent years, foreign companies have successively developed a variety of new technologies for the preservation of agricultural and sideline products, which has greatly improved people's quality of life.
Rice fresh-keeping bags: A Japanese company has introduced a strong, airtight packaging bag that is made of a plastic called “Cikron,†which has excellent oxygen barrier and uses it to package new rice. The preservation effect is particularly good, and the color, aroma, and taste of rice can be maintained for a long time, and the carbon dioxide generated in the bag has the effect of preventing insects and mildew.
New method of preservation of cereals: Bulgarian agricultural experts have invented a new and simple way of saving grain. After the crop is harvested, the seeds are lightly dried, filled into a large pocket made of polyethylene material and then sealed. The grains preserved in this way will neither evaporate nor be moldy and will be preserved until the second year of spring. The nutrient content of the grains will not be reduced at all.
Fruit and vegetable cling film: Japanese experts developed a disposable fruit and vegetable cling film consisting of two layers of highly water-permeable nylon semi-packing machine 'target=_blank> transparent film with high osmotic pressure between the two layers. Sugar syrup. The use of this cling film to package fruits and vegetables, can slowly absorb the water seeping from the surface of fruits and vegetables, so as to achieve the purpose of preservation.
Fresh fruit packaging box: A Japanese paper company produced a fresh fruit packaging box. It is to add a layer of polyethylene film on the corrugated liner of the corrugated carton, and then apply a layer of waterproof wax coating containing trace amounts of fruit disinfectant to prevent the fruit from evaporating and restrain the breath from reaching the purpose of preservation. Packing fruit in this kind of packing box keeps the fruit fresh within a month.
Air transport of fruits and vegetables: In order to keep fruits and vegetables fresh during the airlift process, a U.S. company invented a new method for reducing oxygen content and increasing nitrogen content in packaging boxes to keep fruits and vegetables fresh. This method uses a new type of air conditioning box with air-conditioning performance. This package has a special film, which can absorb oxygen molecules and allow nitrogen to pass through. After entering the box through the film in the air, the nitrogen content in the box can be as high as 98% or more, so that the respiration of fruits and vegetables can be slowed down, and the purpose of freshness preservation can be achieved for a longer period of time.
New type of fruit and vegetable storage bags: A company in the United States introduced a new type of fruit and vegetable fresh plastic bags, which can extend the shelf life of fruits and vegetables and reduce the loss of fruits and vegetables due to excessive aging. This kind of packaging bag is made of a mixture of natural activated clay and polyethylene. It is like a very fine filter screen. The gas and moisture generated during the ripening process of fruits and vegetables can pass through the packaging bag. It is not easy for the fungus to grow in the bag. The preservation period is extended by more than 1 time.
Shipping fresh shrimp packaging: A food company in Hokkaido, Japan, has developed a special package for the delivery of live shrimp in order to solve the problem that it is difficult for citizens to eat live shrimp. The package uses polyethylene as the inner layer, with foamed ethylene as the outer layer and crushed ice between the two layers. The inner layer should prevent water leakage and the outer layer should be prevented from damage. In the polyethylene tank where the live shrimp is moved, the sterilized seawater is filled with a certain amount of oxygen, and then it is sealed with a lid and transported. With this method, the survival rate of live shrimp can be maintained at more than 90% within 24 hours even at an external temperature of up to 40°C. When the outside temperature is low, the survival rate of live shrimp will be higher.
Rice fresh-keeping bags: A Japanese company has introduced a strong, airtight packaging bag that is made of a plastic called “Cikron,†which has excellent oxygen barrier and uses it to package new rice. The preservation effect is particularly good, and the color, aroma, and taste of rice can be maintained for a long time, and the carbon dioxide generated in the bag has the effect of preventing insects and mildew.
New method of preservation of cereals: Bulgarian agricultural experts have invented a new and simple way of saving grain. After the crop is harvested, the seeds are lightly dried, filled into a large pocket made of polyethylene material and then sealed. The grains preserved in this way will neither evaporate nor be moldy and will be preserved until the second year of spring. The nutrient content of the grains will not be reduced at all.
Fruit and vegetable cling film: Japanese experts developed a disposable fruit and vegetable cling film consisting of two layers of highly water-permeable nylon semi-packing machine 'target=_blank> transparent film with high osmotic pressure between the two layers. Sugar syrup. The use of this cling film to package fruits and vegetables, can slowly absorb the water seeping from the surface of fruits and vegetables, so as to achieve the purpose of preservation.
Fresh fruit packaging box: A Japanese paper company produced a fresh fruit packaging box. It is to add a layer of polyethylene film on the corrugated liner of the corrugated carton, and then apply a layer of waterproof wax coating containing trace amounts of fruit disinfectant to prevent the fruit from evaporating and restrain the breath from reaching the purpose of preservation. Packing fruit in this kind of packing box keeps the fruit fresh within a month.
Air transport of fruits and vegetables: In order to keep fruits and vegetables fresh during the airlift process, a U.S. company invented a new method for reducing oxygen content and increasing nitrogen content in packaging boxes to keep fruits and vegetables fresh. This method uses a new type of air conditioning box with air-conditioning performance. This package has a special film, which can absorb oxygen molecules and allow nitrogen to pass through. After entering the box through the film in the air, the nitrogen content in the box can be as high as 98% or more, so that the respiration of fruits and vegetables can be slowed down, and the purpose of freshness preservation can be achieved for a longer period of time.
New type of fruit and vegetable storage bags: A company in the United States introduced a new type of fruit and vegetable fresh plastic bags, which can extend the shelf life of fruits and vegetables and reduce the loss of fruits and vegetables due to excessive aging. This kind of packaging bag is made of a mixture of natural activated clay and polyethylene. It is like a very fine filter screen. The gas and moisture generated during the ripening process of fruits and vegetables can pass through the packaging bag. It is not easy for the fungus to grow in the bag. The preservation period is extended by more than 1 time.
Shipping fresh shrimp packaging: A food company in Hokkaido, Japan, has developed a special package for the delivery of live shrimp in order to solve the problem that it is difficult for citizens to eat live shrimp. The package uses polyethylene as the inner layer, with foamed ethylene as the outer layer and crushed ice between the two layers. The inner layer should prevent water leakage and the outer layer should be prevented from damage. In the polyethylene tank where the live shrimp is moved, the sterilized seawater is filled with a certain amount of oxygen, and then it is sealed with a lid and transported. With this method, the survival rate of live shrimp can be maintained at more than 90% within 24 hours even at an external temperature of up to 40°C. When the outside temperature is low, the survival rate of live shrimp will be higher.
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