Due to the increasing development of world trade, fruits, vegetables and flowers growing thousands of miles away will become your delicacies on the table and the interior decoration is no longer a dream. However, fruits, vegetables, and flowers are things that are not easy to preserve after all. No matter how advanced traffic is, they cannot ensure that fresh fruits and vegetables do not deteriorate in transit, nor can they guarantee that flowers do not wilt during the journey. In order to allow fruits and vegetables and flowers to appear in the freshest state in the market thousands of miles away, researchers in various countries have increased research and development efforts in the preservation of fresh fruits and vegetables, and have made a lot of achievements.
In order to keep fruits and vegetables fresh in the air, a U.S. company invented a new method to reduce oxygen and increase nitrogen content in the packaging. This air-conditioned new package for air transport has a special film that absorbs oxygen molecules and allows nitrogen to pass through. In this way, after the air enters the packaging box through the film, the nitrogen content in the box can be as high as 98% or more. High nitrogen content can slow down the respiration of fruits and vegetables, thus achieving the purpose of keeping freshness for a long time. A food company in the United States made an edible package using cheese and acetylated monoglycerides extracted from vegetable oils. This is a transparent, odorless cover film, which is affixed to the surface of cut fruits and vegetables to prevent dehydration, blackening, and the infiltration of microorganisms, so that cut fruits and vegetables can also be long-lasting. Stay fresh.
In response to the problem of flowers wilting, Israel recently developed a new method for fresh-keeping packaging of flowers. The method is to improve the bubble-filled plastic, which is generally used for packaging computers and electronic instruments, to make a new packaging filling, which is filled in a box filled with flowers, not only inside the box but also inside the box. The temperature is lowered by a few degrees, and the exchange of air inside and outside the box is also slowed down, which plays a good role in freshness preservation.
At present, foreign research on the preservation of fresh fruits and vegetables and food packaging mainly focuses on materials selection and technology.
Japan introduced a one-time use of fruit and vegetable cling film, which is composed of two highly transmissive nylon semi-packing machines 'target=_blank> transparent film, a layer of sand syrup between the two layers, so that the packaging film is slow Absorb moisture from the surface of fruits and vegetables to achieve preservation. A Japanese food company also produced a fruit preservation box. It added a layer of polyethylene film to the corrugated paper lining of the corrugated boxes, and then applied a layer of waterproof wax coating containing trace amounts of fruit disinfectant to prevent fruit. Moisture evaporates and inhibits its breathing. This box can keep fruit fresh for up to one month.
In recent years, edible packaging has become a hot technology. A British company has made an edible preservative for fruits and vegetables. It is a translucent emulsion formulated with sugar, starch, fatty acids and polyesters. It can be applied to apples, sprayed, brushed or impregnated. Citrus, watermelon, bananas, tomatoes and other fruits and vegetables on the surface. Because this preservative forms a layer of sealing film on the surface of fruits, it can prevent oxygen from entering the interior of fruits and vegetables, thereby prolonging the curing process and playing a role in freshness preservation. The freshness of fruits and vegetables coated with this preservative can be up to 200 days or more. . The best part is that this preservative can also be eaten with fruits and vegetables.
In order to keep fruits and vegetables fresh in the air, a U.S. company invented a new method to reduce oxygen and increase nitrogen content in the packaging. This air-conditioned new package for air transport has a special film that absorbs oxygen molecules and allows nitrogen to pass through. In this way, after the air enters the packaging box through the film, the nitrogen content in the box can be as high as 98% or more. High nitrogen content can slow down the respiration of fruits and vegetables, thus achieving the purpose of keeping freshness for a long time. A food company in the United States made an edible package using cheese and acetylated monoglycerides extracted from vegetable oils. This is a transparent, odorless cover film, which is affixed to the surface of cut fruits and vegetables to prevent dehydration, blackening, and the infiltration of microorganisms, so that cut fruits and vegetables can also be long-lasting. Stay fresh.
In response to the problem of flowers wilting, Israel recently developed a new method for fresh-keeping packaging of flowers. The method is to improve the bubble-filled plastic, which is generally used for packaging computers and electronic instruments, to make a new packaging filling, which is filled in a box filled with flowers, not only inside the box but also inside the box. The temperature is lowered by a few degrees, and the exchange of air inside and outside the box is also slowed down, which plays a good role in freshness preservation.
At present, foreign research on the preservation of fresh fruits and vegetables and food packaging mainly focuses on materials selection and technology.
Japan introduced a one-time use of fruit and vegetable cling film, which is composed of two highly transmissive nylon semi-packing machines 'target=_blank> transparent film, a layer of sand syrup between the two layers, so that the packaging film is slow Absorb moisture from the surface of fruits and vegetables to achieve preservation. A Japanese food company also produced a fruit preservation box. It added a layer of polyethylene film to the corrugated paper lining of the corrugated boxes, and then applied a layer of waterproof wax coating containing trace amounts of fruit disinfectant to prevent fruit. Moisture evaporates and inhibits its breathing. This box can keep fruit fresh for up to one month.
In recent years, edible packaging has become a hot technology. A British company has made an edible preservative for fruits and vegetables. It is a translucent emulsion formulated with sugar, starch, fatty acids and polyesters. It can be applied to apples, sprayed, brushed or impregnated. Citrus, watermelon, bananas, tomatoes and other fruits and vegetables on the surface. Because this preservative forms a layer of sealing film on the surface of fruits, it can prevent oxygen from entering the interior of fruits and vegetables, thereby prolonging the curing process and playing a role in freshness preservation. The freshness of fruits and vegetables coated with this preservative can be up to 200 days or more. . The best part is that this preservative can also be eaten with fruits and vegetables.
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