扬州大学学报（农业与生命科学版）2024，Vol.45Issue(1)：106-113,146,9.DOI:10.16872/j.cnki.1671-4652.2024.01.014
基于指纹图谱和化学计量学的茶叶种类鉴别和质量评价
Species identification and quality evaluation of tea based on HPLC fingerprint and stoichiometry
摘要
Abstract
To establish the high performance liquid chromatography(HPLC)fingerprint of tea and a stoichiometric method for tea species identification and quality evaluation.The contents of 9 components including gallic acid,theobro-mine,gallocatechin,epigallocatechin,caffeine,epicatechin,epigallocatechin gallate,gallocatechin gallate and epicatechin gallate in 16 batches of tea samples were determined by HPLC.The similarity analysis,cluster analysis,principal compo-nent analysis and discriminant analysis were used to compare and evaluate the quality of tea.The results showed that 20 common fingerprint peaks were calibrated by HPLC fingerprint of tea,9 components were identified.The contents of 9 components in different varieties of tea were different.Stoichiometric analysis showed that 16 batches of tea samples could be divided into 3 categories.In conclusion,this method can provide reference for species identification and quality evaluation of tea.关键词
茶叶/指纹图谱/化学计量学/种类鉴别/质量评价Key words
tea/fingerprint/stoichiometry/species identification/quality evaluation分类
农业科技引用本文复制引用
张媛婷,罗静,闫鹏,张志国,闫立地,刘畅,秦姝冕..基于指纹图谱和化学计量学的茶叶种类鉴别和质量评价[J].扬州大学学报（农业与生命科学版）,2024,45(1):106-113,146,9.基金项目
黑龙江省自然科学基金资助项目(LH2019C071) （LH2019C071）
大庆师范学院自然科学基金青年基金项目(21ZR10) （21ZR10）
