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A method for identifying the origin of tea by utilizing the content of elements in 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: 2016-01-13
FOOD INSPECTION CENT OF CIQ SHENZHEN
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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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  • A method for identifying the origin of tea by utilizing the content of elements in tea
  • A method for identifying the origin of tea by utilizing the content of elements in tea
  • A method for identifying the origin of tea by utilizing the content of elements in 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 limited in any way, and any changes or replacements made according to the teaching of the present invention belong to the protection scope of the present invention.

[0019] Example: For teas from six different origins, including Hangzhou West Lake Longjing, Suzhou Dongting Biluochun, Anhui Huangshan Maofeng, Jiangxi Lushan Yunwu, Fujian Wuyi Rock Tea and Fujian Anxi Tieguanyin, identify the origin by mathematical modeling of the content of the elements contained . The main steps are as follows:

[0020] 1. Establishment of tea element content database

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

[0022] ②, tea sample processing

[0023] The sample processing of selenium refers to "National Food Safety Standard Determination of Selenium in Food" GB5009.93-2010;

[0024] For the remaining elem...

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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 tea leaves by utilizing the content of elements in tea leaves, and belongs to the technical field of spectral analysis. Background technique [0002] Tea is an important economic crop in our country. However, the quality of tea products in the market is chaotic, the origin information is unknown, and the phenomenon of passing fakes as real and substandard ones is common. Therefore, studying the differences between teas from different origins and developing the true attribute characterization technology of teas are of positive significance for the quality control of teas, the protection of products in origins and the rights and interests of consumers, the standardized operation of the market, and the help of Chinese teas to enter the international market. At present, the most common identification method of tea is still the sensory identification method. However, sensory evaluation is susc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/73G06F17/30
Inventor 陈波靳保辉颜治谢丽琪林燕奎涂小珂王丙涛朱尔一
Owner FOOD INSPECTION CENT OF CIQ SHENZHEN
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