Electronic tongue detection information-based Wuyi rock tea taste grade discrimination method

Abstract

The invention relates to an electronic tongue detection information-based Wuyi rock tea taste grade discrimination method. The method comprises the following steps: preparing a liquid sample, acquiring detection information, constructing a Logistic regression discriminant connection function, and calculating the centroid distance of various grades of samples. The discrimination method effectively solves the problem of unable long-time examination of artificial examination due to sensory fatigue, well eliminates discrimination result errors among examination personnel, improves the stability and the consistence of taste grade examination results, and has the advantages of convenient and fast examination process, short time, and realization of completion of a whole process from sample preparation to discrimination completion in 5min; and a model analysis result obtained through the method has good stability, the consistency of the model analysis result with an artificial examination result is higher than 90%. The method has very good practical values, and is of great significance to application of automatic control means in the production process of Wuyi rock tea and quality evaluation description, sales and circulation of final tea products.

Description

technical field [0001] The invention relates to a method for discriminating tea grades, in particular to a method for discriminating taste grades of Wuyi rock tea based on electronic tongue detection information, which belongs to the technical field of food. Background technique [0002] Wuyi rock tea belongs to the oolong tea in northern Fujian, produced in the Wuyi Mountain area in the northern part of Fujian Province, one of the top ten famous teas in China, famous all over the world for its unique "rock bone flower fragrance", and has always been the boutique of traditional famous teas in my country. The quality composition of Wuyi rock tea is complex, and its grade evaluation "firstly focuses on rock rhyme", and the taste is "clear, fragrant, sweet, and alive". The traditional quality evaluation needs to rely on the "sensory" of the judges. The period is long, and it is easily interfered by various subjective and external factors. The "consistency" and "quantification" ...

AI Technical Summary

Problems solved by technology

The quality composition of Wuyi rock tea is complex, and its grade evaluation "firstly focuses on rock rhyme", and the taste is "clear, fragrant, sweet, and alive". The traditional quality evaluation needs to rely on the "sensory" of the judges. The period is long, and it is easily interfered by various subjective and external factors. The "consistency" and "quantification" of the data are insufficient, and it is difficult to objectively and stably characterize the actual quality of rock tea. Therefore, it is necessary to find a standardized and The easy-to-operate method realizes the stable discrimination of the taste quality grade of Wuyi rock tea