| The essential oil components in herbal pair(HP）Pericarpium Citri Reticulatae-Pericarpium Citri Reticulatae Viride（PCR-PCRV） and its single herbs were respectively extracted by steam distillation,then qualitatively and quantitatively analyzed by gas chromatography-mass spectrometry(GC-MS） and a chemometric resolution method,namely heuristic evolving latent projections(HELP）.In addition,temperature programmed retention indices(PTRIs） were employed to improve the precise degree of qualitative analysis.To sum up,27,27 and 23 volatile chemical components in essential oils of PCR,PCRV and HP PCR-PCRV were separated and identified,accounting for 93.64%,96.45% and 85.28% of total contents of the three tested samples,respectively.There are a total of 19 common compounds.The main volatile constituents in PCR,PCRV and HP PCR-PCRV are D-limonene,(γ)-terpinene,linalool and α-farnesene. |