Yellow bud tea aroma grade sorting method by use of electronic nose

A classification method and technology for yellow bud tea, applied in the field of aroma quality classification of electronic nose yellow bud tea, can solve the problems of insufficient classification accuracy, slow training speed of SMO algorithm, etc., and achieve the effect of improving classification accuracy and efficiency

Inactive Publication Date: 2015-08-19
ANHUI AGRICULTURAL UNIVERSITY
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AI Technical Summary

Problems solved by technology

In the face of these large amounts of tea data, the SMO algorithm has the defects of slow training speed and insufficient classification accuracy.

Method used

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  • Yellow bud tea aroma grade sorting method by use of electronic nose
  • Yellow bud tea aroma grade sorting method by use of electronic nose
  • Yellow bud tea aroma grade sorting method by use of electronic nose

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Embodiment Construction

[0028] The present invention will be described in further detail below according to the drawings and embodiments.

[0029] 1. Preparation of tea samples

[0030] Prepare 70 repeated samples of yellow bud tea leaves of various grades, each repeated sample has a mass of 5g, sealed in a 500ml beaker with a double-layer film, and allowed to stand for 45min at a room temperature of 25±°C.

[0031] According to the requirements of sensory evaluation, the ratio of tea to water is 1:50, and 5g of tea leaves are brewed with 250ml of water. The water for making tea is pure water boiling at a moderate temperature of 100°C, the brewing time is 5 minutes, and then the tea is filtered out. Seal the tea water and the tea bottom in a 500ml beaker respectively, and let it stand for 45 minutes so that the headspace of the beaker is enriched with the volatile components of the tea leaves, and at the same time, the water temperature is also cooled to room temperature, and the room temperature is...

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Abstract

The invention discloses a yellow bud tea aroma grade sorting method by use of an electronic nose. An electronic nose sensor is used for simulating the function and the characteristics of the sensory evaluation of human, an improved SMO algorithm is combined for aroma grade sorting and a corresponding prediction model and a prediction method can be acquired; the yellow bud tea aroma grade sorting method has the beneficial effects that the improved SMO sorting algorithm is applied into practical yellow bud tea data, the tea aroma grades are sorted, the data sorting precision and the data sorting efficiency are effectively improved, and the yellow bud tea aroma grade sorting method has important significance on further improvement of the research and the development of the tea science and technology in China.

Description

technical field [0001] The invention relates to a classification method, in particular to a method for classifying the aroma quality of electronic nose yellow bud tea. Background technique [0002] Use intelligent sensory analysis technology to simulate the functions and characteristics of human sensory evaluation, combine multiple algorithms to extract valuable, novel, refined, and understandable information in intelligent sensory testing, and then obtain corresponding prediction models and methods. The electronic nose is a new type of intelligent sensory instrument that emerged in the 1990s. It is an instrument that simulates the olfactory organ of animals. At present, it has been widely used in food, beverage, environmental monitoring and agricultural product processing and other fields. Compared with traditional detection and analysis methods, the electronic nose technology is simple to operate, has high sensitivity, and the measurement results are more objective and re...

Claims

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Application Information

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IPC IPC(8): G01N27/00
Inventor 杨宝华刘晓莹戴前颖王淑娟
Owner ANHUI AGRICULTURAL UNIVERSITY
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