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Method for identifying producing area of tea by using element content in the tea

A technology of element content and tea, applied in the field of spectral analysis, can solve problems such as ineffectiveness, and achieve the effect of high discrimination accuracy

Inactive Publication Date: 2014-03-12
FOOD INSPECTION CENT OF CIQ SHENZHEN
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AI Technical Summary

Problems solved by technology

[0004] A common feature of modern analysis technology is that the analysis results obtained from the measurement of each sample are multi-parameter data. It is difficult to analyze multi-parameter data only by visual judgment or simple data comparison.

Method used

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  • Method for identifying producing area of tea by using element content in the tea
  • Method for identifying producing area of tea by using element content in the tea
  • Method for identifying producing area of tea by using element content in the tea

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not restricted in any way. Any changes or substitutions made according to the teachings of the present invention shall fall within the protection scope of the present invention.

[0019] Example: For tea from six different origins including Hangzhou West Lake Longjing, Suzhou Dongting Biluochun, Anhui Huangshan Maofeng, Jiangxi Lushan Yunwu, Fujian Wuyi Yancha, and Fujian Anxi Tieguanyin, the origin was identified by mathematical modeling of the element content contained in it . The main steps are as follows:

[0020] 1. Establish a database of tea element content

[0021] ① Collect the 6 tea samples in the place of origin;

[0022] ② Tea sample processing

[0023] The sample processing of selenium refers to "National Food Safety Standard Determination of Selenium in Food" GB 5009.93-2010;

[0024] For other elements, weigh about 0.5 g sample (accurat...

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Abstract

The invention discloses a method for identifying producing area of tea by using element content in the tea. Spectroscopy analysis technique is used for determination and establishment of a tea element content database; based on the partial least squares, VBA code of EXCEL is used to establish a multielement content tea producing area discrimination model; through the determination of the contents of 21 elements in the tea, data is input into a prediction module of a piece of software for calculation; if a judgment value of a certain tea is greater than 0.8, the tea can be considered as belonging to the tea producing area, and otherwise the tea doesn't belong to the tea producing area. The analysis results of the invention are only decided by software prediction value, so as to rule out subjectivity and uncertainty of human judgment; and the method with high determination accuracy can be used to identify different teas from different producing areas and has a broad application prospect.

Description

Technical field [0001] The invention relates to a method for identifying the origin of the tea by using the element content in the tea, and belongs to the technical field of spectrum analysis. Background technique [0002] Tea is an important economic crop in my country, but the quality of tea products on the market is chaotic, and the information on the place of origin is unknown. The phenomenon of fake products and shoddy products is common. Therefore, studying the differences between teas from different origins, developing the true attribute characterization technology of teas, is of positive significance for the quality control of teas, the protection of products from the origin regions and the rights of consumers, the standardized operation of the market, and the promotion of Chinese teas to the international market. At present, the most common identification method for tea is the sensory identification method. However, sensory evaluation is susceptible to various factors a...

Claims

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Application Information

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IPC IPC(8): G01N21/73G06F17/30
Inventor 陈波
Owner FOOD INSPECTION CENT OF CIQ SHENZHEN
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