Abstract
Supercritical impregnation is one of the novel technologies exploited for incorporation of active components into packaging material. This technique uses carbon dioxide as solvent to incorporate the active components in the polymeric matrix. The major advantages of using supercritical carbon dioxide as a solvent rely on the possibility to operate under mild temperature and so to process with thermo-sensitive active components. This technique permits the impregnation of diverse natural and synthetic polymers which is the main advantage of this process. This review covers recent developments in the application of supercritical impregnation technology for incorporation of active components in polymers for food packaging applications.
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