Nondestructive testing method for freezing storage period of pork based on electronic nose

Abstract

The invention discloses a nondestructive testing method for the freezing storage period of pork based on an electronic nose. The nondestructive testing method comprises the following steps: step S01, sampling: extracting a frozen pork sample; step S02, data acquisition: carrying out headspace gas acquisition on the pork sample by using the electronic nose; step S03, establishment of a prediction model: observing the capability of the electronic nose in distinguishing different freezing storage periods and long-time refrigeration before freezing storage by using principal component analysis, variance analysis based on repeated measurement data and nonparametric testing of independent samples, and then establishing the prediction model for determining the freezing storage period of pork and for determining whether pork has undergone long-time refrigeration before freezing storage by using an artificial neural network algorithm; and step S04, result prediction: predicting results according the headspace gas acquisition results of the unknown sample and the prediction model. The nondestructive testing method provided by the invention is applicable to rapid and nondestructive testing of the freezing storage period of frozen pork and testing of whether frozen pork has undergone long-time refrigeration before freezing storage.

Description

technical field [0001] The invention relates to a non-destructive detection method for pork frozen storage period, in particular to an electronic nose-based nondestructive detection method for pork frozen storage period. Background technique [0002] Pork is the most consumed meat in my country, accounting for more than 60% of the meat consumption of urban and rural residents for a long time. Due to the special periodicity of pork production and its important impact on my country's economy, a large amount of pork reserves are needed to deal with emergencies and stabilize meat price fluctuations, etc., making frozen storage pork has become my country's meat reserve, regulating meat prices and meat prices. An important means of import and export trade. Frozen meat can be stored for a long time under strict freezing conditions, but if the storage time is too long or the ambient temperature changes too much during storage and transportation, the quality of frozen meat will deter...

AI Technical Summary

Problems solved by technology

However, the research on the establishment of a non-destructive testing method for pork frozen storage period using the electronic nose system has not yet been involved.

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