Variety of new fruit and vegetable packaging technologies

At present, developed countries have increased the research and development of fruit and vegetable fresh-keeping packaging, and have made many achievements. Different types of fruit and vegetable packaging products with different features and functions come to the fore and are welcomed by food manufacturers. Recently, the Japan Food Circulation System Association has developed a new type of fresh-keeping packaging carton: it uses a silicate named “Ristoval” as an additive for pulp; this kind of stone powder has a good absorption effect for various gases, and the price It is cheap and does not require low-temperature and high-cost equipment, has a long-term preservation effect, and the weight of preservation will not be reduced, so businesses are using this kind of fresh-keeping cartons.

A company in the Netherlands used microwave fresh-keeping technology to achieve results. It is a new method of cryogenic disinfection of fruits, vegetables and fish foods. The microwave is used to heat it up to 72°C in a short time. The processed food is listed at 0°C-4°C and can be stored for 42-45 days without deterioration. It is very suitable for fruits and vegetables in the off-season supply. , favored by people.

A Japanese packaging company recently developed a new one-time-use moisturizing fresh-keeping plastic packaging film. It is composed of two translucent nylon membranes with strong water permeability, and is filled with natural paste and high osmolarity sugar syrup between the membranes. It can slowly absorb moisture that oozes from the surface of vegetables, fruits and meat. , so as to achieve the purpose of preservation. Currently, Britain, the United States, Germany, France and some other countries generally adopt the new technology of decompression and preservation, and have developed low-voltage containers with standard specifications. This decompression and preservation method has good preservation effect; it has the advantages of convenient management, simple operation, low cost, etc. It is widely used in long-distance fruit and vegetable transportation.

In recent years, edible packaging has become a hot technology. A British company made an edible preservative for fruits and vegetables. It is a translucent emulsion made of sugar, starch, fat, and polyester. It can be sprayed, painted, or impregnated to cover apples, citrus, Watermelon, banana, tomato and other fruits and vegetables on the surface. As 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, thus prolonging the aging process and playing a preservation role. The preservation period of fruits and vegetables coated with this preservative can be as long as 200 days. Above: The best part is that this preservative can also be eaten with fruits and vegetables.

Source: Packaging World