Extraction and GC-MS Analysis of Essential Oil from Flower of Paniculate Goldraintree

OBJECTIVE To analyze the compositions of essential oil from flower of paniculate goldraintree. METHODS To isolate by steam distillation and analyze by GC-MS. Relative content of each component was determined by area normalization. Immersion them 20 hours and heating them to 8 hours until the essential oil did not increase. GS-MS conditions: DB-5MS capillary column (0.2 mm×30 m, 0.25 μm), carrier gas was high purity helium, flow rate was 1 mL·min^-1. MS conditions: EI ionization 70 eV, ion source temperature was 200 ℃. RESULTS Thirty-five compounds, representing 98.8% of total oil, were indentified and their relative amount was determined. CONCLUSION The oil is rich in 3-methyl-4-oxopentanoic acid (49.71%), n-hexadecanoic acid (16.16%), myristic acid(2.62%), linolenic acid(2.38%), (Z,Z)-9,12-octadecadienoic acid(2.36%), 2-pentadecanone(2.32%), hexatriacontane(2.17%), benzeneacetaldehyde(2.05%).