Preparation method and application of time temperature indicator based on lipase reaction diffusion

A time temperature, indicator technology, applied in thermometers that give average/integrated values, material analysis by observing the effect on chemical indicators, and analysis by causing chemical reactions to occur in materials, etc., can solve the color ring. The color band becomes lighter, the diffusion is difficult, the identification is difficult, etc., to achieve the effect of complete gel structure, obvious diffusion change, and obvious diffusion phenomenon.
CN102175677AActive Publication Date: 2011-09-07JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2011-09-07

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Abstract

The invention relates to a preparation method and application of a time temperature indicator based on lipase reaction diffusion. The preparation method comprises the following steps of: preparing an upper cover containing a gel reaction substrate and a bottom board containing a gel enzyme substrate; before activation, separating the upper cover containing the gel reaction substrate from the bottom board containing the gel enzyme substrate and refrigerating at the temperature of 4 DEG C; during use, pressing the upper cover containing the gel reaction substrate on the bottom board containing the gel enzyme substrate, so that substrate gel of the gel reaction substrate is contacted with the gel enzyme substrate for activation; performing an enzymatic reaction after the substrate gel is contacted with the gel enzyme substrate to form a yellow belt; judging and determining the accumulation effect of the yellow belt on time and temperatures according to the diffusion length of the yellow belt; and performing the matching of activation energy with food to be predicted according to the relation between the activation energy of an established time temperature indicator (TTI) and influence factors, so that the quality condition of the food during production, storage and transportation and sale can be monitored conveniently and reliably.
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Description

technical field

[0001] The invention relates to a time-temperature indicator based on the principle of lipase reaction and diffusion and a method for using it. The time-temperature indicator is based on the principle of lipase reaction and diffusion, and can indicate the time and temperature of an item in the process of production, storage, transportation and sales. Accumulation effect, so that it is convenient and reliable to monitor the quality status of items. Background technique

[0002] With the improvement of people's living standards, food safety issues are getting more and more attention from consumers. The issue of shelf life is an important aspect of food safety, and the influence of temperature on shelf life is crucial, especially for those foods that are greatly affected by temperature (such as some easily spoiled foods that need to be frozen or refrigerated). The shelf life (that is, the open shelf life) on the outer label of the package that people usually se...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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