Study on Fingerprint Construction of Pu'er Raw Tea by GC-MS

Abstract

Abstract:Taking example for Pu'er raw tea 7542(106) in paper, sample pre-treatment conditions ( Headspace) and detection of the gas chromatography mass spectrometry (GC-MS) were optimized. Under the condition of optimization, the chromatographic fingerprints of nine batches of Pu'er raw tea 7542 sample for different ages and batches were determined by GC-MS, followed by the analysis with the traditional chinese medicine (TCM) chromatographic fingerprint similarity evaluation system (A) 2004 edition software and the SPSS 19.0 software, to establish the mutual fingerprints of Pu'er raw tea. The results showed that GC-MS fingerprint of Pu'er raw tea had superioritied on the qualitative determination of multiple components at the same time, and good performance on repeatability, precision and stability. The chromatographic fingerprint provided scientists with useful tools in understanding the huge amounts of data generated by the analytical advances and proved to be valuable for quality control, classification and discrimination between Pu'er raw tea fingerprints.