Rapid sensitive method for detection of freshness of meat
A meat and sensitive technology, applied in the field of rapid detection of meat freshness, can solve the problems of large error, time-consuming analysis, weak alkalinity, etc., and achieve the effect of high accuracy, fast detection speed and high cost performance
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Embodiment 1
[0035] Put 10g of fresh pork in a 1L air bag of a closed constant volume container, use a 100 microliter sampler to extract the gas in the 1L air bag, and send the collected gas sample into the ion mobility spectrometry thermal desorption sampler. The mobility spectrum adopts the positive ion mode to detect the presence of sulfur-containing compounds, benzene compounds and amine compounds in the gas, as well as the content of these compounds at regular intervals within a week. The test results are as follows Figure 4 shown. The data in the figure is the interval sampling analysis every 24 hours at 8:00 a.m. for 1 day. It can be seen that the sample signal peaks at 3.4ms, 4.8ms, and 5.6ms all increase with time, indicating that pork corruption is intensifying.
Embodiment 2
[0037] Put 10g of fresh shrimp meat in a 1L air bag of a sealed constant volume container, take a 100 microliter sampler to extract the gas in the 1L air bag, and send the collected gas sample into the ion mobility spectrometry thermal desorption sampler. The ion mobility spectrometer adopts the positive ion mode to detect the presence of sulfur compounds, benzene compounds and amine compounds in the gas, as well as the content of the above-mentioned compounds at regular intervals within a week; the test results are as follows Figure 5 shown. The data in the figure is the interval sampling analysis every 24 hours at 8:00 a.m. for 1 day. It can be seen that the signal peaks of the samples with migration times of 3.4ms, 4.8ms, 5.6ms and 8ms all increase with time, indicating that the corruption of shrimp meat is intensifying.
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