Research and Application of Freshness Indicative Smart Packaging for Food
Freshness indicative smart packaging can easily judge and indicate food freshness, therefore help con- sumers to purchase the fresh food. The principles of freshness indicative smart packaging were described, the specific researches and applications for food were summarized in microbial sensitive smart packaging, carbon dioxide sensitive smart packaging, volatile basic nitrogen sensitive smart packaging, hydrogen sulphide sensitive smart packaging and ethylene sensitive smart packaging. The future direction of development of the smart packaging was also prospected.