食品科学 ›› 2019, Vol. 40 ›› Issue (8): 180-185.doi: 10.7506/spkx1002-6630-20180507-103

• 成分分析 • 上一篇    下一篇

基于滋味成分HPLC指纹图谱的判别分析及相似度评价在信阳毛尖茶分等定级中的应用

王淑慧,宋沙沙,曹学丽   

  1. 北京食品营养与人类健康高精尖创新中心,北京工商大学食品学院,北京市食品风味化学重点实验室,北京 100048
  • 出版日期:2019-04-25 发布日期:2019-05-05
  • 基金资助:
    国家质量监督检验检疫总局公益性行业科研专项(201310230)

Application of Discriminant Analysis and Similarity Evaluation of HPLC Fingerprints of Flavor Components in Xinyang Maojian Tea Grading

WANG Shuhui, SONG Shasha, CAO Xueli   

  1. Beijing Advanced Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Engineering, Beijing Key Laboratory of Food Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, China
  • Online:2019-04-25 Published:2019-05-05

摘要: 采用高效液相色谱方法分别建立信阳毛尖7 个等级茶汤滋味特征指纹图谱。基于15 种特征成分,采用判别分析技术对2 个系列41 个信阳毛尖茶样进行了良好的等级判别,判别正确率近100%;通过建立7 种指纹图谱相似度计算方法发现,各相似度计算方法均能反映茶叶等级间的差异大小,其中以新改良程度相似度法最佳。采用相似度计算方法对茶叶分等定级的结果与其实际等级相一致,并可实现对等级差异的量化分析。

关键词: 信阳毛尖, 滋味成分, HPLC指纹图谱, 判别分析, 相似度评价

Abstract: High performance liquid chromatography (HPLC) fingerprints of seven grades of Xinyang Maojian tea were established using 41 samples. Based on 15 characteristic flavor components found in all samples, discriminant analysis (DA) was used to differentiate between grades of Xinyang Maojiao tea with nearly 100% accuracy. All seven fingerprint similarity calculation methods employed could reflect the difference between grades of tea, while the new improved extent similarity method was proved to be the best. The results of similarity calculation in grading of tea were consistent with the actual grades and allowed quantification of the difference between grades of tea.

Key words: Xinyang Maojian tea, flavor components, high performance liquid chromatography (HPLC) fingerprint, discriminant analysis (DA), similarity evaluation

中图分类号: