不同品种红茶及茶膏的Fisher判别分析

为探究Fisher判别分析法对不同品种红茶及茶膏种类品质区分的可行性,针对不同品种红茶及滇红碎茶茶膏,以蛋白质、总糖、茶红素、茶黄素、茶褐素及9种矿物质元素为变量进行判别分析。结果表明:采用Fisher判别分析法评定不同品种红茶及不同加工工艺滇红碎茶茶膏的真实归属及品质是可靠的。红茶茶叶及茶膏品质评定中采用Fisher判别分析有利于降低传统感官评定过程中人为主观因素的干扰,避免模糊性和不确定性,保证评审的稳定和可靠性。

Application of Fisher’s Discriminant Analysis to Discriminate Different Varieties of Black Tea and Dianhong Tea Cream Produced by Different Methods

The feasibility of using Fisher’s discriminant analysis to distinguish different varieties of black tea and tea cream
produced by different methods was investigated. Protein, total sugar, thearubigins, theaflavin, theabrownin and 9 mineral
elements were used as the variables for discriminant analysis of different varieties of black tea and tea cream made from
broken Diangong tea. The results showed that Fisher’s discriminant analysis is reliable in discriminating all tested samples.
Fisher discriminant analysis is helpful to reduce interference from subjective factors in the process of sensory evaluation,
avoiding ambiguity and uncertainty and ensuring the stability and reliability.