Wuyi rock tea production place identification method through combination of electronic tongue and chromatographic separation technology

Abstract

The invention relates to a Wuyi rock tea production place identification method through combination of electronic tongue and a chromatographic separation technology, and belongs to the technical field of geographical indication product authenticity recognition. In the prior art, the single detection data cannot represent all production place traceability key information, the data matching problem exists when different types of the detection data are subjected to combined use in the metrology method, and other problems exist. A purpose of the present invention is to solve the problems in the prior art. According to the present invention, based on the least square support vector machine discrimination model, the electronic tongue data and the chromatographic separation data (including amino acids, catechin and the like) of the rock teas (produced inside and outside the geographical indication production place) from different production places are integrally fused, the LS-SVM analysis model is established, the sample is extracted, and the rock tea production place is objectively and accurately determined by using the model, wherein the recognition rate of the model formed through the data fusion is highest, achieves 100.0%, and is higher than the LS-SVM result of the single data, and the recognition rate of the blind sample achieves 100%; and the method has the good application prospect, and can be used as the Wuyi rock tea production place traceability recognition technical method.

Description

[0001] (1) Technical field [0002] The invention relates to a method for identifying the origin of Wuyi rock tea combined with electronic tongue and chromatographic separation technology, and belongs to the technical field of authenticity identification of geographical indication products. [0003] (2) Background technology [0004] According to the definition of GB / T 17924-2008, a geographical indication product refers to the use of raw materials produced in a specific region and produced in a specific region according to traditional techniques. The quality, characteristics or reputation are essentially determined by the geographical characteristics of the region of origin , and products named after the name of the region of origin have been reviewed and approved according to legal procedures. Tea has obvious regional characteristics and quality characteristics. The quality and taste are closely related to the geographical conditions, climatic factors, and environmental facto...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problem that a single detection data cannot represent all the key information of origin traceability and the joint use of different types of detection data in the metrology method. It provides a combination of electronic tongue data and chromatographic separation (including Amino acids and catechins) data of Wuyi rock tea origin identification model technology method, the method is based on the least squares support vector machine (LS-SVM), different origin rock tea (including geographical indication origin and outer origin rock tea) electronic Tongue data and chromatographic separation (amino acid and catechin) data are fused together to establish an analysis model, and the model is used to objectively and accurately determine the origin of rock tea after extracting samples

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