Vegetables refer to a type of plants or fungi that can be cooked or cooked into food. Vegetables are one of the essential foods in people's daily diet and are a kind of green food. Vegetables can provide a variety of vitamins and minerals necessary for the human body. Nutrients. So what are the packaging elements of vegetables?
1. The role of packaging
The water content of fruits and vegetables is very high, but their epidermal protective tissue is poor. They are easily damaged during harvesting, storage and transportation. Mechanical damage and microbial infringement. In addition, after harvesting, fruits and vegetables are still living bodies with respiration and transpiration, which will produce a large amount of respiratory heat, which will increase the temperature of the surrounding environment and cause the product to lose water. Therefore, fruits and vegetables are prone to rot and deterioration, losing commercial value and edible value. Packaging It can buffer the adverse effects of too high and too low ambient temperatures on products, prevent products from being contaminated by dust and microorganisms, and reduce the spread of pests and diseases and the loss of water and wilting of products. During storage, transportation and sales, packaging can reduce friction, collisions and The damage caused by extrusion allows the product to maintain good stability in circulation and improve the commodity rate. In addition, packaging is also an auxiliary means of trade and can provide standard specification units for market transactions. The standardization of packaging is conducive to the mechanized operation of warehousing work and reduces labor intensity design. Reasonable packaging is also conducive to making full use of storage space
2. Requirements for packaging containers
Packaging containers for fruits and vegetables have special requirements. First of all, they should have sufficient mechanical strength to protect the products during loading, unloading, transportation and stacking. Avoid damage during the coding process. Secondly, it must have a certain degree of permeability to facilitate the elimination of respiratory heat generated by the product and gas exchange. The packaging container should be moisture-proof to prevent water absorption and deformation. In addition, the packaging container must also be clean, pollution-free, odor-free, The packaging container has the characteristics of no toxic chemicals, smooth inner wall, beautiful appearance, light weight and low cost. The outside of the packaging container should be marked with the trademark, product name, grade, weight, place of origin and packaging date
3. Types and specifications of packaging containers
/>Packaging containers for fruits and vegetables can be divided into transportation packaging, storage packaging and sales packaging according to their uses. The packaging containers suitable for fruits and vegetables mainly include cartons, wooden boxes and plastic boxes. Some products with relatively hard texture can also use sacks, Packaging such as woven bags, mesh bags, etc. The size and capacity of the packaging can vary depending on the type and variety of the product. At the same time, convenience in carrying, stacking, handling, and mechanized and palletized operations must be considered. The aspect ratio of the packaging box is: Product The weight of the additional packaging generally does not exceed kilograms. After harvest, the products can be transported in large wooden boxes to the packaging shed for refrigeration and controlled atmosphere storage. In addition to the above outer packaging, in order to prevent the product from losing water and reduce mechanical damage, inner packaging should be added to the packaging box. Packaging is mainly various plastic films, paper or paper partitions, etc.
Packaging elements of fruits and vegetables