Time—temperature indicators

  • J. D. Selman

Abstract

Time—temperature indicators are part of the developing interest in intelligent packaging, and there has been considerable interest in small temperature indicators (TIs) and time—temperature indicators (TTIs) for monitoring the useful life of packaged perishable products. There are over 100 patents extant for such indicators based on a variety of physico-chemical principles; however, widespread commercial use has been very limited for a number of reasons. For example, TTIs must be easily activated and then exhibit a reproducible time-temperature dependent change which is easily measured. This change must be irreversible and ideally mimic or be easily correlated to the food’s extent of deterioration and residual shelf-life.

Keywords

Sugar Migration Microwave Chlorophyll Steam 

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© Springer Science+Business Media Dordrecht 1995

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  • J. D. Selman

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