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Oolong tea quality evaluating method based on near-infrared spectrum technology

A technology of near-infrared spectroscopy and near-infrared spectrometer, which is applied in the field of oolong tea quality appraisal, can solve the problems of unsuitable tea production pattern and tea sales market, restriction of tea circulation and fair trade, and the influence of subjective factors, so as to shorten the running time, The effect of shortening inspection time and improving work efficiency

Active Publication Date: 2015-09-09
FUJIAN AGRI & FORESTRY UNIV
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Problems solved by technology

However, the current evaluation of tea quality mainly relies on traditional artificial sensory evaluation, and the results are easily affected by the subjective factors of reviewers. Traditional chemical inspection methods are cumbersome and complicated, and are not suitable for tea production patterns and tea sales markets. The circulation and fair trade of Chinese tea in the international market

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  • Oolong tea quality evaluating method based on near-infrared spectrum technology
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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Please refer to figure 1 , the present invention provides a kind of oolong tea quality appraisal method based on near-infrared spectrum technology, it is characterized in that comprising the following steps:

[0025] Step S1: Preparation of tea powder samples: collect tea samples from various oolong tea producing areas, grind the tea samples into tea powder through a pulverizer, pass the tea powder through an 80-mesh sample sieve, and take 10-15 g of tea powder under the sieve Number it, package and refrigerate it as a tea powder sample;

[0026] Step S2: Collection of spectral information: Based on Workflow, set the near-infrared spectral information collection workflow of the tea powder sample, and use the Antaris II Fourier near-infrared spectrometer to collect the diffuse reflectance spectral information of the tea powder sample in the near-...

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Abstract

The invention relates to an oolong tea quality evaluating method based on the near-infrared spectrum technology. The oolong tea quality evaluating method includes steps of preparing tea powder samples, acquiring spectrum information, preprocessing the spectrum information, screening wavelength based on genetic algorithm, setting up an evaluation model and scoring oolong tea quality. The oolong tea quality evaluating method is simple in sample preprocessing, quality of oolong tea can be accurately and quickly evaluated, operability is high, influence of subjective consciousness in sensory evaluation and complicated operation of conventional chemical analysis method are avoided, and results are objective and accurate.

Description

technical field [0001] The invention relates to a method for identifying the quality of oolong tea based on near-infrared spectroscopy. Background technique [0002] Oolong tea is one of the six major teas in my country. It has distinctive and unique quality characteristics and is loved by consumers. With the continuous expansion of the oolong tea market, people have higher requirements for the quality of oolong tea, and high-quality oolong tea has attracted more and more attention. However, the current evaluation of tea quality mainly relies on traditional artificial sensory evaluation, and the results are easily affected by the subjective factors of reviewers. Traditional chemical inspection methods are cumbersome and complicated, and are not suitable for tea production patterns and tea sales markets. The circulation and fair trade of Chinese tea in the international market. [0003] Therefore, it is particularly urgent to study the method of rapid detection of tea quali...

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Application Information

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IPC IPC(8): G01N21/359G01N21/3563
Inventor 孙威江王冰玉
Owner FUJIAN AGRI & FORESTRY UNIV
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