1YL2000GC-MS100084YL2000GC-MSYL200068886YL2000YL2000*20060003072://[1]GC-MSGC-MSFinniganTRACEGC-MSCP-SIL8CB-MS(0.25mm×30m0.25µm)60100(6)10024042701.0mL0.8µl40:1EI20070eV240eV35625amuXcaliburNISTXcalibur2466863.050.15112570%8-34.109-7.83:-6.43.972.901010.13.191.132-1.37(octanal)C8H16O1280.21-46.69(acetophenone)C8H8O1202.320.1657.43C10H12O1522.680.0867.80(phenylethylalcohol)C8H10O1220.11-78.55(neroloxide)C10H18O21700.22-88.762-nonenalC9H16O1400.13-99.26(borneol)C19H18O1540.84-109.41C10C18O1542.13-119.64(octanoicacid)C8H16O21443.191.05129.82(2-nonenal)C10H18O1540.25-139.88(myrtenol)C10H16O1520.21-1411.52C10H18O1540.51-1512.12C9H10O21502.540.161612.21(nonanoicacid)C9H18O21580.700.181712.35(perillylalcohol)C10H16O1520.71-1812.93C10H14O1500.29-1915.08(n-decanoicacid)C10H20O21721.130.102015.19C10H16O1520.67-2116.36(2-decenoicacid)C10H18O21701.370.212217.77(1-dodecanol)C12H26O1860.35-2317.86(-curcumene)C15H222020.32-2418.4cadineneC15H242040.46-2518.77C12H14O21901.11-2618.84-bulgareneC15H242040.54-2718.98-cadineneC15H242041.19-2819.98(-elemol)C15H26O2223.30-2920.22nerolidolC15H26O2220.21-3020.84(spathulenol)C15H24O2203.970.803121.05(globulol)C15H26O2220.81-3221.34(guaiol)C15H26O2222.900.263321.97(apiol)C12H14O42220.84-3422.38C15H26O2226.405.04(-eudesmol)C15H26O22234.107.563623.9-bisabololC15H26O2227.831.093724.95C14H26O22262.21-3826.08(benzylbenzoate)C14H12O22120.33-3927.94C16H30O22541.110.334028.75(benzylsalicylate)C14H12O32281.00-4128.86(1-hexadecanol)C16H34O2420.54-4229.07ethylpentadecanoateC17H34O22700.11-4329.87(methylpalmitate)C17H34O22700.41-4430.04(hexadecanolide)C16H30O22540.76-4530.37linolenicalcoholC18H32O2640.37-4631.53(ethylpalmitate)C18H36O22841.89-4733.88(methyllinoleate)C19H34O22940.63-4833.98(heneicosane)C21H442960.51-4934.96(osthole)C15H16O32442.252.205035.43(ethyllinoleate)C20H36O23081.86-5135.57(ethyloleate)C20H38O23100.67-YL2000[1]0.06250.1520.15/0.0625YL2000%19.5668.102.573.687.1369.1910.108.802.253.086.58YL2000[1][2,3]608857.46YL20002.57%:2.25%9[2]50[3]YL2000::-eudesmol-eudesmolYL2000:YL2000(4):298-300GC-MS200631(8)663-666.1997,9(1):4-8GC-MSanalysisoftheessentialoilsfromYL2000ethanoldecoctionMaChao,WangWei,LiBo-nan,HuaLei,XingDong-ming,WangYu-gang,DuLi-jun(LaboratoryofPharmaceuticalSciences,DepartmentofBiologicalSciencesandBiotechnology,TsinghuaUniversity,Beijing100084,China)[Abstract]Objective:ToanalyzetheessentialoilsfromYL2000ethanoldecoction,andinvestigatethechangesoftheessentialoilsfromthoseofthewaterdecoctionandthefourherbs.Method:TheessentialoilsofYL2000ethanoldecoctionwereextractedbywater-steamdisstillation,seperatedandidentifiedbyGC-MS.Thecomponentswerecalculatedwithnormalizationmethodandcomparedwiththereferences.Result:68compoundshavebeenidentified;comparingwiththewaterdecoction,theamountoffattyacidswasdecreasedwhiletheamountofterpeneswasincreased;atthemeanwhile,careneandpinenewhichwereabundantinsingleherbwerenotdetected.Conclusion:Notonlycouldtheethanoldecoctionreservethecharactersofthewaterdecoction,reducingthecareneandpinene,butalsoitenrichedtheterpenesandreducedthefattyacidsinthewaterdecoction.[keywords]YL2000;essentialoils;ethanolextract;waterdecoction;GC-MS(LaboratoryofPharmaceuticalSciences,DepartmentofBiologicalSciencesandBiotechnology,TsinghuaUniversity,Beijing100084,China)