食品与机械2017，Vol.33Issue(8)：34-37,65,5.DOI:10.13652/j.issn.1003-5788.2017.08.009
GC-TOF MS结合化学计量学用于安化黑茶的识别
Discrimination of Anhua dark tea by gas chromatography-time of flight mass spectrometry combined with chemometrics
摘要
Abstract
The volatile components in Anhua and other dark teas were analyzed by headspace solid phase microextraction (HS-SPME) combined with gas chromatography-time of flight mass spectrometry (GC-TOF MS).About 41 volatile compounds were analyzed qualitatively and quantitatively.A classification model and predict the authenticity obtained from variance analysis,principal component analysis (PCA) and partial least squares discriminate analysis (PLSDA).In addition,the 26 compounds significant impacting on the classification were screened out from Anhua dark tea.The straight forward classification trend of Anhua dark tea and other samples was visualized through projection score plots obtained by PCA.Effective classification and identification of Anhua dark tea,other origin dark tea and other kinds were carried out.The 14 important components for classification were found.The results showed that the developed GCTOF MS method combined with chemometrics based on the volatile components in tea could be used to discriminate Anhua dark tea.关键词
顶空固相微萃取/气相色谱—飞行时间质谱/主成分分析/偏最小二乘判别分析法/安化黑茶/识别Key words
gas chromatography-time of flight-mass spectrometry (GC-TOF MS)/principal component analysis (PCA)/partial least squares discriminate analysis (PLSDA)/volatile components/Anhua dark tea/discriminate引用本文复制引用
颜鸿飞,彭争光,李蓉娟,陈练,王美玲,付善良,戴华,张帆..GC-TOF MS结合化学计量学用于安化黑茶的识别[J].食品与机械,2017,33(8):34-37,65,5.基金项目
湖南省科技计划项目(编号:2015JC328) （编号:2015JC328）
粮油深加工与品质控制湖南省2011协同创新项目资助(编号:湘教通[2013]448号) （编号:湘教通[2013]448号）
