基于电子鼻的有机正山小种红茶的检测

Detection of organic lapsang souchong black tea based on electronic nose

利用电子鼻分别对有机正山小种红茶、普通一级正山小种红茶和普通二级正山小种红茶的香气进行分析,然后采用主成分分析(PCA)、判别因子分析(DFA)和聚类分析(CA)方法对电子鼻区分有机正山小种红茶和普通正山小种红茶香气的可行性进行分析,结果说明电子鼻结合主成分分析、判别因子分析和聚类分析可以明显迅速地区分有机和普通正山小种红茶的香气,为进一步有机茶的鉴定和认证工作提供帮助。

Electronic nose was used to discriminate fragrance from organic lapsang souchong, ordinary primary lapsang souchong and ordinary secondary lapsang souchong. Then, principal component analysis（PCA）, discriminant factor analysis（DFA） and cluster analysis（CA） were used for analysing the ability of distinction between organic lapsang souchong and ordinary lapsang souchong. The results showed that electronic nose combined with principal component analysis, discriminant factor analysis and cluster analysis could clearly and rapidly distinguish the difference of fragrances among organic and ordinary lapsang souchong, providing assistance for further identification and certification of organic tea.