A method and system for identifying pork freshness
A technology of freshness and pork, which is applied in the identification method and system field of pork freshness, and can solve the problems of time-consuming, complicated process, unfavorable rapid identification and analysis of pork quality, etc.
Active Publication Date: 2021-06-01
FOSHAN UNIVERSITY
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Problems solved by technology
[0003] The national standard detection method has problems such as cumbersome pre-processing, complicated process, and long time-consuming, and requires testing personnel with certain professional qualities, which is not suitable for rapid identification and detection of large quantities
At present, the widely used high-performance liquid chromatography, gas chromatography-mass spectrometry, near-infrared spectroscopy, etc., all need to carry out complex pretreatment of pork, extract the liquid to be tested, and then carry out identification analysis, which takes a long time , or the resolution is low, which is not conducive to the rapid identification and analysis of pork quality
Computer technology that simulates human senses, such as electronic noses, has low accuracy and can only obtain identification results due to the selectivity and limitations of sensors, as well as their sensitivity to environmental humidity, temperature and other disturbances. Unavailable information on biomarkers affecting pork freshness
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[0045] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0046] It should be noted that although the functional modules are divided in the system schematic diagram and the logical order is shown in the flow chart, in some cases, it can be executed in a different order than the module division in the system or the flow chart steps shown or described. The terms "first", "second" and the like in the specification and claims and the above drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence.
[0047] figure 1 It is a kind of identification method of pork freshness that the embodimen...
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The invention discloses a method and system for identifying the freshness of pork. The method includes obtaining pork samples of different freshness levels, and using a fast mass spectrometer combined with dynamic headspace water bath heating sampling, vacuum ultraviolet photoionization and ion trap mass spectrometry to detect all pork sample, the obtained mass spectrometry data is used as a data set, and is divided into a training set and a verification set; a pork freshness discrimination model based on a decision tree is constructed according to the training set, and the model is verified with a verification set; K biomarker information of freshness; obtain the mass spectrometry data of the pork sample to be tested, input it into the pork freshness discriminant model for identification, and output the freshness category. The present invention directly obtains mass spectrometry data of pork samples without sample pretreatment, and then constructs a pork freshness discrimination model, not only can quickly realize the identification of pork freshness, but also can intuitively know the biomarker information that affects pork freshness.
Description
technical field [0001] The invention relates to the technical field of meat freshness detection, in particular to a pork freshness identification method and system. Background technique [0002] During the transportation and storage of pork, due to environmental factors such as storage conditions and storage time, as well as its own factors, its freshness is continuously reduced, even spoiled, and toxic and harmful chemical products are produced. Therefore, freshness is an indicator of pork quality. an important measure. [0003] The national standard detection method has problems such as cumbersome pre-processing, complicated process, and long time-consuming, and requires testing personnel with certain professional qualities, which is not suitable for rapid identification and detection of large quantities. At present, the widely used high-performance liquid chromatography, gas chromatography-mass spectrometry, near-infrared spectroscopy, etc., all need to carry out complex...
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IPC IPC(8): G01N27/64G06K9/62
CPCG01N27/64G06F18/24
Inventor 郭伟清欧阳永中
Owner FOSHAN UNIVERSITY