چكيده فارسي :
Active packaging has been investigated for more than 40 years. The main purpose of food packaging is to protect the food from microbial and chemical contamination, oxygen, water vapor and light. The type of packaging used therefore has an important role in determining the shelf life of a food. Active packaging does more than simply provide a barrier to outside influences. It can control, and even react to, events taking place inside the package [1]. Active food contact materials absorb or release substances in order to improve the quality of packaged food or to extend its shelf life. Intelligent food contact materials monitor the condition of packaged food or the surrounding environment [2].
In this study,polyethyleneterephthalate (PET)used as the packaging polymer, Eriochrome Black T as PH sensor, nanoparticles of iron oxide as the radical scavenger, copper oxide as the antibacterial, and alpha-tocopherol as the antioxidants food preservatives are stabilized on the packaging polymer. The nanoparticles are characterized by Transmission Electron Microscopy (TEM).This work confirmed that indicator, embedded on polymer, displayed a color change from Amethystine red to blue during release of amines from food which represented food spoilage in the package polymer.
