Therefore, considering that chitosan and PVA can be safely used
in food packaging and that natural extracts can be incorporated into
chitosan/PVA blends, we report here the development and characterization
of a TimeeTemperature Indicator sensor based on a
PVA and chitosan polymer blend incorporated with anthocyanins.
This sensor aims to establish variations in temperature indirectly
from changes in the pH of food products during a period of time
when the foodstuff is kept at different temperatures from those
recommended for storage.