Meat freshness indicating array and preparation method and application thereof

A freshness and indication technology, applied in material analysis by observing the effect on chemical indicators, analysis by chemical reaction of materials, measuring devices, etc. higher question

Inactive Publication Date: 2020-10-27
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The application also provides a detection tube for visually detecting the freshness of meat, which includes a transparent tube body and a transparent tube cover connected to the tube body, and a gel

Method used

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  • Meat freshness indicating array and preparation method and application thereof
  • Meat freshness indicating array and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1 Preparation method of a meat freshness indicator array

[0041] This embodiment is carried out according to the following sequence of steps:

[0042] 1. After dissolving polyethylene glycol-6000 in distilled water, add it to the solid methyl cellulose to form a uniform colloidal solution, and let it stand to remove air bubbles to obtain solution A;

[0043] The concentration of polyethylene glycol-6000 in the solution A made is =10g / L, the concentration of methylcellulose is =30g / L;

[0044] 2. Divide solution A into nine parts to obtain solutions A1~A9, add corresponding indicators and reagents to solutions A1~A9 as shown in Table 1, stir evenly, remove air bubbles, and then dry at T=40°C t=15h, the indicating membranes B1~B9 are obtained;

[0045] The amount of indicator added per liter of solution A1~A9 is V 1 =40mL, and the amount of added reagent is V 2 =40mL;

[0046] 3. Cut the indicator membranes B1~B9 to get 1.2cm*1.2cm indicator membranes C1~C...

Embodiment 2-6

[0051] Example 2-6 Preparation method of a meat freshness indicating array

[0052] The preparation process of Examples 2-6 is roughly the same as that of Example 1, except that the specific parameters are different, and the involved parameters are shown in Table 2 below.

[0053] The parameter of table 2 embodiment 2-6

[0054] .

[0055] For the convenience of operation, in each embodiment of embodiment 1-6, the concentrations of the methanol solution and the HCL solution added in the solutions A1-A6 of step 2 respectively adopt the same concentration. In fact, the solutions A1-A6 in the same embodiment The concentration of the added reagent added in the solution does not have to be consistent, and the concentration of the methanol solution and the HCL solution only needs to be within the range of 35% to 40%.

Embodiment 7

[0056] Example 7 A Meat Freshness Indicating Array and Its Application

[0057] This embodiment provides a meat freshness indicator array prepared by Embodiment 1-6, and provides its application.

[0058] During use, nine indicator labels included in embodiment 1-6 are placed in the packing box / packaging bag and fixed, forming such as figure 1 The circular meat freshness indicator array shown, realizes changes in meat freshness through changes in the color of the indicator film contained in the indicator label.

[0059] The user can also change the shape of the meat freshness indicator array according to actual needs.

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Abstract

The invention discloses a preparation method of a meat freshness indication array. The method comprises the following steps of uniformly mixing and dissolving methylcellulose and polyethylene glycol-6000 in distilled water to obtain a solution A; dividing the solution A into nine parts to obtain solutions A1 to A9, respectively adding corresponding indicators and adding reagents into the solutionsA1 to A9, and drying to obtain indicator films B1 to B9; and finally, preparing the indicating films B1 to B9 into the meat freshness indicating array. The invention further discloses the meat freshness indication array and application thereof. The indication array comprises nine indicators, can indicate the freshness state of meat at the same time, and is comprehensive in obtained information, accurate in measurement result, visual and clear in result, easy in implementation of the preparation method, low in cost and simple in operation during use. The invention belongs to the technical field of fresh food fresh-keeping detection, and is used for detecting meat freshness.

Description

technical field [0001] The invention belongs to the technical field of fresh food preservation detection and is used for detecting the freshness of meat, in particular to a meat freshness indicator array, its preparation method and application. Background technique [0002] Meat is an important source for people to obtain protein, fat, vitamin B2, vitamin B1, niacin and iron, and plays a pivotal role in people's lives. [0003] Meat is highly perishable. On the one hand, its freshness is one of the most important factors affecting its quality and safety. On the other hand, it directly affects its flavor and nutrition, and even affects the production and accumulation of harmful substances. Therefore, the freshness of meat ultimately affects the health and safety of consumers and their willingness to purchase, and is directly related to the profits of food producers and sellers. [0004] With people's emphasis on food safety issues, how to identify the freshness of meat has b...

Claims

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Application Information

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IPC IPC(8): G01N21/78
CPCG01N21/783
Inventor 王琳高晓光孙志伟陈引娣任栩王佳
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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