Quick detection method of meat freshness and detection platform thereof

A detection method and freshness technology, applied in the field of electrochemistry, can solve problems such as time-consuming, complex equipment, poor sensitivity, etc., and achieve the effects of improving detection capability, easy assembly and low cost

Inactive Publication Date: 2010-08-18
无锡市疾病预防控制中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, judging the freshness of meat is mainly carried out from three aspects: the sensory properties of meat, the characteristics and content of spoilage decomposition products, the number of bacteria and the degree of pollution. However, these methods are often time-consuming, complicated equipment, and not sensitive enough. very good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0013] Example 1 Detection of pork freshness:

[0014] 1. Sample processing

[0015] (1) Sample pork

[0016] 5.0g of fresh meat is placed in a closed container, the air sampler is used to extract the gas in the closed container, and the collected gas sample is introduced into 10mL 0.1mol / L HCl solution, the sampling rate is 0.5L / min, and the sampling time is 5min .

[0017] (2) Meat with bones

[0018] Separate the sample meat as much as possible. At the same time, try to put 5.0g sample meat in a closed container. Use an atmospheric sampler to extract the gas in the closed container, and introduce the collected gas sample into 10mL0.1mol / L HCl solution, and sample The rate is 0.5L / min, and the sampling time is 5min.

[0019] 2. Freshness determination

[0020] Adjust the pH value of the introduced gas 10mL0.1mol / L HCl solution to 6.5, use the MWNTs / PVA / iridium complex modified electrode as the working electrode, the platinum wire electrode as the counter electrode, and the Ag / AgCl ele...

Embodiment 2

[0025] Example 2 Detection of beef freshness

[0026] 1. Sample processing

[0027] (1) Sample beef

[0028] Place 5.0g of fresh beef in a closed container, use an atmospheric sampler to extract the gas in the closed container, and introduce the collected gas sample into 10mL0.1mol / L HCl solution, the sampling rate is 0.5L / min, and the sampling time is 5min .

[0029] (2) Meat with bones

[0030] Separate the sample meat as much as possible. At the same time, try to place 5.0g of sample beef in a closed container. Use an atmospheric sampler to extract the gas in the closed container, and introduce the collected gas sample into 10mL 0.1mol / L HCl solution. The rate is 0.5L / min, and the sampling time is 5min.

[0031] 2. Freshness determination

[0032] Adjust the pH value of the introduced gas 10mL0.1mol / L HCl solution to 6.5, use the MWNTs / PVA / iridium complex modified electrode as the working electrode, the platinum wire electrode as the counter electrode, and the Ag / AgCl electrode as th...

Embodiment 3

[0037] Example 3 Detection of Lamb Freshness

[0038] 1. Sample processing

[0039] (1) Sample lamb

[0040] Place 5.0g of fresh lamb in a closed container, use an atmospheric sampler to extract the gas in the closed container, and introduce the collected gas sample into 10mL 0.1mol / L HCl solution at a sampling rate of 0.5L / min and a sampling time of 5min .

[0041] (2) Meat with bones

[0042] Separate the sample meat as much as possible. At the same time, try to put 5g of sample meat in a closed container. Use an atmospheric sampler to extract the gas in the closed container, and introduce the collected gas sample into 10mL0.1mol / L HCl solution, sampling rate It is 0.5L / min, and the sampling time is 5min.

[0043] 2. Freshness determination

[0044] Adjust the pH value of the introduced gas 10mL0.1mol / L HCl solution to 6.5, use the MWNTs / PVA / iridium complex modified electrode as the working electrode, the platinum wire electrode as the counter electrode, and the Ag / AgCl electrode as t...

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PUM

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Abstract

The invention discloses a quick detection method of meat freshness and a detection platform thereof, which belong to the electrochemical field. The invention is based on an electrochemical luminescence theory, has very good response to inorganic ammonia with an MWNTs/PVA/(pq)2Ir(N-phMA) modified electrode, takes an MWNTs/PVA/iridium compound modified electrode as a working electrode, a platinum wire electrode as a counter electrode and an Ag/AgCl electrode as a reference electrode, carries out CV-ECL scanning with the scanning scope of 0.2 to 1.8V and the scanning rate of 100mv/s, can continuously monitor the ammonia produced in the meat corruption change process, can quickly and sensitively detect the meat freshness, and improves the food quarantine efficiency and accuracy. The detection platform provided by the invention has the advantages of easy assembly, low cost and easy popularization, and is applicable to on-site rapid detection and mass screening.

Description

Technical field [0001] A rapid detection method for meat freshness belongs to the field of electrochemistry. The invention also relates to a detection platform for fast and efficient detection of meat freshness. A fast detection platform for meat freshness. Background technique [0002] With the continuous improvement of people's living standards and the increasing consumption of meat, people's requirements for meat quality are also constantly improving. How to accurately assess the freshness of meat is related to people's vital interests. my country’s sanitary standards for fresh and frozen livestock and poultry meat are clearly stipulated. According to the sanitary standards, the evaluation of the freshness of meat mainly adopts the method of combining sensory standards and physical and chemical standards. GB / T 12516-1990, GB / T 5009.44-2003 and GB2707-2005. The metamorphic process of meat is the process of gradual corruption of the external sensory properties and internal comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/66
Inventor 钮伟民张敬平孙秀兰张银志宋启军李再均李芳周磊万琛
Owner 无锡市疾病预防控制中心
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