Back to results
US 12,616,217 B2Granted
Food packaging films for food storage and freshness monitoring
AssigneeKhalifa University of Science and Technology
InventorsFawzi Banat, Vengatesan Muthukumaraswamy Rangaraj, Mohammad Abu Haija, Fathima Sumaiya Mohamed Rafeek
Life of this patent
Estimating the term…
Abstract
A pH responsive film for indicating food freshness includes a protein, a polysaccharide, and anthocyanin, wherein the protein and the polysaccharide form a protein/polysaccharide matrix within the film, and wherein the film is sufficient to change color in response to a change in pH of the film. Methods of making and using the film are included in the present disclosure. Food preservation systems utilizing the film are also presented.
Claims6
A food preservation system, the food preservation system comprising:
- a film for preserving freshness of a food item, the film including a protein, a polysaccharide, and a date seed extract including anthocyanin, wherein a weight percentage of the date seed extract in the film ranges from about 1 wt. % to about 40 wt. %, and
- wherein the film provides a colorimetric indication sufficient to indicate freshness of the food item.
Dependencies are inferred from the claim text.