Acidic emulsified composition for temperature history recording and indicator for temperature history recording

摘要

PPROBLEM TO BE SOLVED: To provide an emulsified composition for recording a temperature history, being a substance used as an indicator for recording a temperature history in order to record the history of not having frozen (non-frozen), the history of having frozen, or the history of having been unfrozen, which is demulsified in freezing and develops visible oil layer separation by being unfrozen after the demulsification. PSOLUTION: This emulsified composition for recording a temperature history, demulsified in freezing and developing visible oil layer separation by being unfrozen after the demulsification, contains vegetable oil and fat (excepting palm oil) containing unsaturated fatty acid and palm oil of a melting point not higher than 25C. This emulsified composition for recording a temperature history is demulsified in freezing on condition of 10 hour storage at -20C in cases where the composition is packed and sealed in a bag 5cm square of transparent resin film so as substantially not to leave dead space therein, and develops visible oil layer separation by being unfrozen on condition of 30 minute storage at 10C or higher after the demulsification. PCOPYRIGHT: (C)2007,JPO&INPIT