Analysis of the volati le components of Penthorun chinel se by gas chramatography-mass spectrcmetry
FENG Chang-gen, WANG Hong-wu,REN Qi-sheng (Center for Research and Development of Medicine,Beijing In-stitute of Technology,Beijing 100081, China;Beijing Jiangzhong Institute of Materia Medica,Beijing 100050,China)
OBJECTIVE To study the chemical constituents of the volatile oil of penthorum Chinese Pusrsh.. METHODS The essential oil was obtained by steam distillation. The chemical components were searated and identified by GC-MS.The relative per-centage of each composition was determined by area nomalization. RESULTS The extraction efficiency of steam distillation was 0.30%.38peaks were found and 26 of them were identified representing 95% of the total contents, CONCLUSI ON Ketones and esters appeared to be the main constituents of the volatile oil.The relative contents of palmitic acid ethyl ester(18.64%),(E)-6,10-dimethyl-5,9-undecadien-2-one( 14.95%), (E, E)-6,10,14-trimethyl-5,9,13-pentadecatre-2-one( 10.42%), palmitic acid (9.60%)and (z,z,z)-9,12,15-octadcatrien-l-ol(7.40%) were higher than that of others,The study and the results were re-ported for the first time.