Method for identifying producing area of Heishan brown shell eggs

Abstract

The invention discloses a method for identifying the producing area of Heishan brown shell eggs. The method comprises the following steps: respectively pretreating egg samples from different producing areas; measuring the isotope ratio and mineral element content of the pretreated eggs by using isotope ratio mass spectrometry and inductively coupled plasma mass spectrometry; screening out difference traceability indexes among different regions by combining a chemometrics method, and establishing a Fisher function discrimination model by applying the screened traceability indexes; determining the producing area of the brown shell egg sample to be detected by comparing the size of the Fisher function discrimination model. According to the method, Fisher function discrimination models of the brown-shell eggs from three producing areas of Heishan County, Heishan County surroundings and Hebei are established for the first time, the original classification discrimination accuracy is 100.0%, the cross validation accuracy is 98.5% by utilizing the models, the discrimination accuracy is high, the stability is good, effective source tracing of geographical indication products and non-geographical indication brown-shell eggs of the Heishan brown shell eggs is realized, technical support is provided for Heishan brown shell egg production place confirmation and further protection.

Description

technical field [0001] The invention relates to a method for identifying the origin of Heishan brown-shell eggs, and belongs to the technical field of agricultural product geographical indication identification methods. Background technique [0002] my country is the largest egg production and consumption country in the world, and eggs have become an important animal-derived food that is indispensable in people's daily life. In recent years, my country's per capita egg possession is 23.63 kg / year, reaching the level of developed countries. With the increase of per capita consumption level, the demand for eggs has been upgraded, requiring safer, healthier, nutritious and high-quality eggs. The No. 1 document of the central government emphasizes the need to promote the structural reform of the agricultural supply side. Heishan brown-shell eggs are a regional brand product launched by Heishan County, Liaoning Province, to adjust the agricultural industrial structure based on m...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for identifying the origin of Heishan brown-shell eggs to overcome the defect in the prior art that there is a gap in the traceability technology for the origin of eggs with geographical indications

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