Fruit and Vegetable Freshness and Packaging in Developed Countries

A U.S. company has invented a new method to reduce the oxygen and increase the nitrogen content in the packing box to keep fruits and vegetables fresh. This method uses a new type of air-conditioned packaging box. This package has a special film. The film fiber can absorb oxygen molecules and pass nitrogen. After the air enters the box through the film, the nitrogen content in the box can be As high as 98%, the respiration of fruits and vegetables is slowed down for a long time to keep fresh.

A U.S. company has developed a new method that can keep cut fruits and vegetables fresh. The researchers used cheese and acetylglycerol extracted from vegetable oil to make a covering that would be transparent. Food, odorless flakes are affixed to cut fruit and vegetable surfaces to prevent dehydration, prevent fruit browning, and prevent microbial invasion.

Japanese experts made a disposable fruit and vegetable cling film, which consists of two highly-permeable nylon semi-packing machines 'target=_blank' and a transparent film with high osmolarity between the two layers. The use of this cling film to package fruits and vegetables can slowly absorb moisture oozing from the surface of fruits and vegetables and thus extend the shelf life.

A papermaking company in Japan produced a fruit fresh-keeping packaging box that added a layer of polyethylene film to the corrugated paper liner of the corrugated box, and then applied a layer of waterproof wax coating containing a trace amount of fruit disinfectant to prevent fruit moisture from evaporating. And inhibit breathing to achieve the purpose of preservation. Use this kind of packing box to pack fruit and keep the fruit fresh within one month.

A British company has developed an edible fruit preservative, a translucent emulsion made from sucrose, starch, fatty acids and polyesters. It can be applied to apples, oranges, and watermelons by spraying, brushing or dipping. The surface of fruits such as bananas and tomatoes has a shelf life of up to 200 days. Because this preservative forms a sealing film on the surface of the fruit, oxygen can be prevented from entering the interior of the fruit, thereby prolonging the fruit ripening process. Play a freshness effect, this preservative can be eaten together with the fruit.

Israel Pollen Company developed a new method of fresh-keeping packaging of flowers. Solved the problem of easy withering after the flowers are cut. This method is a new package made by modifying the commonly used plastic with bubbles. When packing flowers, lining the new package into a box filled with flowers can not only reduce the temperature of the box by a few degrees, but also can block the oxygen outside the box, thus playing a good role in freshness preservation.

Source: Packaging and Food Machinery