Analysis of Volatile Oil in Helicteres angustifolia by GC-MS

OBJECTIVE:To analyze the chemical components of volatile oil from Helicteres angustifolia by GC-MS.METHODS:The volatile oil was extracted from H.angustifolia by steam distillation.The chemical components of volatile oil were identified by GC-MS,the content of chemical components from volatile oil were determined by normalization method.RESULTS:There were 81 chemical components,accounting for 76.52% of total volatile oil.Main chemical components were monoterpenes,sesquiterpenes and their oxygenated derivatives and aliphatic compounds.CONCLUSION:The methods are reliable,stable and good repeatability.The methods can be applied to the analysis of chemical components of volatile oil from traditional Chinese medicine.