Time-temperature indicator and preparation method thereof

A label and time technology, applied in the measurement of color/spectral characteristics, etc., can solve the problems of large-scale production and use of unfavorable products, and achieve the effect of good compatibility, expansion of application scope, and low production cost.

Active Publication Date: 2014-03-12
SHANDONG INST OF COMMERCE & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN1547010A developed by Ye Xingqian et al. in 2004 uses monomer compounds (butyl stearate with a melting point of 12°C, dimethyl phthalate at -1.1°C, dibutyl phthalate at -10°C, dibutyl phthalate at -17°C octanediol) as an indicator, but since the melting point of butyl stearate is 12°C, it greatly exceeds the refrigerated temperature range (0-8°C) required by general refrigerated foods
After the time and temperature indication label of this patent is finished, it must be stored, transported and sold below the specified temperature, which is not conducive to the large-scale production and use of the product

Method used

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  • Time-temperature indicator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Measure petroleum jelly, vegetable oil, and glyceryl behenate in a ratio of 70:30:4, add a small amount of colorant corn yellow, heat and mix at a temperature of 60-80°C, and put it into the film storage bag 1 To seal it, place the diffusion medium 6 strip with one end embedded with the thorn piece 3 in the fixing slot 8, and finally assemble the other components one by one to make a time-temperature indicator label. Wherein, the diffusion medium belt 6 is a medium-speed filter paper strip with a specification of 8.0 cm×0.5 cm. When in use, treat at a low temperature below -5°C for 10 minutes, and then push the spines 3 into the film liquid storage bag 1 completely.

[0044] At 9.0°C, the diffusion rate of the time-temperature indicator label of this embodiment is 1.39×10 -2 cm / h. When the time-temperature indicates that the diffusion length of the label is 1.0 cm, it means that 72 hours have passed at 9.0°C. The time-temperature indicator label is able to accurately...

Embodiment 2

[0046] Measure petroleum jelly, vegetable oil, and glyceryl docosanoate at a ratio of 70:30:8, add a small amount of colorant maize yellow, heat and mix at 60-80°C and put it into a film storage bag 1. Inner seal, place the diffusion medium 6 with one end embedded with the thorn piece 3 in the fixed slot 8, and finally assemble the other components one by one to make a time-temperature indicator label. Wherein, the diffusion medium belt 6 is a medium-speed filter paper strip with a specification of 8.0 cm×0.5 cm. When in use, treat at a low temperature below -5°C for 10 minutes, and then push the spines 3 into the film liquid storage bag 1 completely.

[0047] At 10.0°C, the diffusion rate of the time-temperature indicator label of this embodiment is 7.47×10 -3 cm / h. When the time-temperature indicator label has a diffusion length of 0.5 cm, it means that 70 hours have passed at 10.0° C. The time-temperature indicator label of Example 2 can accurately measure the diffusion ...

Embodiment 3

[0049] Measure petroleum jelly, vegetable oil, and glyceryl behenate at a ratio of 70:30:1, add a small amount of colorant capsanthin, heat and mix at a temperature of 60-80°C and put it into the film storage bag 1 To seal it, place the diffusion medium 6 strip with one end embedded with the thorn piece 3 in the fixing slot 8, and finally assemble the other components one by one to make a time-temperature indicator label. Wherein, the diffusion medium belt 6 is a medium-speed filter paper strip with a specification of 8.0 cm×0.5 cm. When in use, treat at a low temperature below -5°C for 10 minutes, and then push the spines 3 into the film liquid storage bag 1 completely.

[0050] At 5.5°C, the diffusion rate of the time-temperature indicator label of this embodiment is 2.58×10 -2 cm / h. When the time-temperature indicates that the diffusion length of the label is 2.0 cm, it means that 77 hours have passed at 5.5°C. The time-temperature indicator label of Example 3 can accura...

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Abstract

The invention belongs to the technical field of cold storage and refrigeration, and particularly relates to a time-temperature indicator and a preparation method thereof. The time-temperature indictor comprises an indicator fixing plate and a sealing thin film, wherein a fixing clamping slot is formed in the other end of the indicator fixing plate, the end part of one end of the fixing clamping slot is close to a thin film liquid storage bag, a diffusion medium belt matched with the fixing clamping slot in length is fixed in the fixing clamping slot, a thorn sheet is embedded in one end, close to the thin film liquid storage bag, of the diffusion medium belt, and scale marks are marked on the front side of the indicator fixing plate. The time-temperature indicator can reflect the change of the quality of a frozen food and indicate the remaining shelf life of the frozen food, and the critical temperature is freely regulated within the scope of 0-12 DEG C, so that the scope of application of the indicator is greatly expanded.

Description

technical field [0001] The invention belongs to the technical field of refrigerating and freezing, and in particular relates to a time-temperature indicating label and a preparation method thereof. Background technique [0002] With the increasing demand of Chinese residents for high-quality food, traditional frozen packaged food can no longer meet the requirements of consumers, and high-quality frozen food is becoming more and more popular among consumers. In addition to the influence of food itself, the quality of refrigerated food is also affected by environmental conditions such as temperature, humidity, gas composition, and microorganisms. Temperature is usually the key factor affecting the quality of refrigerated food. In the process of storage, logistics, and distribution, temperature fluctuations will reduce the quality of refrigerated food and shorten its shelf life, which will not only cause large economic losses, but also cause potential food damage. safe questio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/29
Inventor 范维江郭风军葛月婷姜宁朋张长峰王国利
Owner SHANDONG INST OF COMMERCE & TECH
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