Packaging materials

Application of active packaging technology will be the future trend. "Active packaging" concept comes from and normally selected by law and custom "inert" instead of packaging materials, especially on food packaging applications and approved by the current European regulations have "mask" function of packaging materials. Active technology packaging includes packing and packaging inside the gas and food interactions. Active packaging can effectively keep food nutrition and flavor. Thanks to advances in materials science, biological science, and gas packaging, active packaging technology has developed rapidly in recent years, such as packaging space remaining oxygen will accelerate the oxidation of food, oxygen active packaging systems came into being. 70 's of the last century deoxidizer started for food packaging. Iron reducing agent is a fast-developing a reducing agent, followed by nitrate system in developed Asia, enzyme catalysis, organic photosensitive deoxidizer deoxidizer, and so on. If the sterilant activity of packaging systems, including sterilization systems such as ethanol, are food-grade ethanol into a carrier, loaded grocery bags, food can be, remain in a sterile State. Active combination of sterilized material and packaging material system is sorbitol, salt, sorbic acid, sodium benzoate, zeolite and other substances added to manufacturing packaging materials and manufacturing process into containers, makes its slow release of the active ingredient of sterilization. Found in the study of fruit and vegetable fresh-keeping packaging of fresh food, fresh-keeping packaging, vinyl releases for fruits and vegetables, when after you reach a certain concentration of ethylene, will accelerate the rotting of fruits and vegetables. Therefore, ethylene absorbents should be sought in the fresh-keeping packaging, will accelerate oxidation of ethylene released by food, so as to achieve good results to reduce packaging in the ethylene content increasing effect and extend shelf-life. Nanoparticles used as oxidation catalysts are mainly Fe3O4, Fe2O3, and Co3O4 and the NiO as well as Pt, Rh, Ag, Pd etc.