Wuyi Yan tea was one of Olong tea which was produced only in north of Fujian province. It was a famous tea in China and the quality of Zheng Yan tea which was manufactured of tea leaves planted in the centre area of Wuyi mountain was best in Wuyi Yan tea. To recognize Zheng Yan tea , Partial least Squares Discriminant Analysis（PLS-DA）combined with leverage correction was used to discriminate Zheng Yan tea and Ban yan tea based on near-infrared spectra in this paper. The result showed that Zheng Yan tea could be recognized by PLS-DA method. 100% was correctly recognized in training set(42 samples), test set(20 samples) separately. The result proved the feasibility of discriminant recognition of Zheng Yan tea and Ban Yan tea.
ZHOU Jian
,
CHENG Hao
,
WANG Li-yuan
,
XUE Feng-ren
,
HE Xiao-yan
,
XU Jin-bin
,
HE Wei
. Recognition of Wuyi Zheng Yan Tea with PLS-DA Based on Leverage Correction Using near Infrared Spectra[J]. Journal of Tea Science, 2009
, 29(1)
: 34
-40
.
DOI: 10.13305/j.cnki.jts.2009.1.006
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