Method and product for indicating alkaline lipase type time and temperature

A technology of time temperature and lipase, applied in thermometers, devices for measuring time intervals, thermometers with physical/chemical changes, etc., can solve problems such as economic losses, poor quality, improper temperature control, etc., and achieve the effect of reducing costs
CN101349599AInactive Publication Date: 2009-01-21NANJING AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING AGRICULTURAL UNIVERSITY
Publication Date
2009-01-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an alkali lipase type time and temperature indicating process and a product, belonging to the technical field of farm product storage and transportation. The reaction system comprises using 0.1mL alkali lipase solution with 1gL-1 concentration, 0.5mL reaction substrate glyceryl triacetate, PVA9.5mL emulsifier with 20gL-1 concentration, 0.7mL CaC12 solution with 1molL-1 concentration, 39mL Gly-NaOH buffer solution with 0.05molL-1 concentration and 10.6pH, and 0.2mL phenol red-thymolphthalein mixing solution as the indicator of the reaction, deciding the relative relation with the time and temperature accumulating effect according to the reaction system color parameters values L*, a* and b* detected by CIE in the colourometry after starting the reaction. The alkali lipase type time and temperature indicating process of the invention can accurately indicate the time and temperature accumulating effect of objects in the process of production, storage, transportation and marketing.
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Description

1. Technical field

[0001] The invention relates to an alkaline lipase-type time and temperature indicating method and product, and belongs to the technical field of storage and transportation of agricultural products. It can be used to indicate the cumulative effect of time and temperature during the production, storage, transportation and sales of items, and to a certain extent, it can indicate the quality of the product. 2. Background technology

[0002] The frequent occurrence of food quality and safety issues has aroused widespread concern. In addition to being affected by internal factors such as its own composition, food quality is also affected by external environmental conditions such as atmospheric pressure, mechanical pressure, light, and temperature, and quality and safety problems often occur during food production, storage, transportation, or shelf life, so control it well The external environment is a very important link. Among all external environmental fact...

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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