Comparison of volatile components from Curcuma longa extracted by headspace solid-phase microextraction and steam distillation

Objective:To compare the volatile components from Curcuma longa extract by headspace solid-phase microextraction and steam distillation,and verify the analysis results bu PCA technology.Methods:The volatile oils from Curcuma longa were extracted by using steam distillation or headspace solid-phase microextraction.Then the oils were analyzed by GC-MS combined with principal components analysis(PCA).Results:The results indicated that totally 48 different volatile compounds were identified in the extracts,with 41 from headspace solid-phase microextraction and 33 from steam distillation.Among which,26 mutual compounds were detected.Conclusion:There were some differences between the two methods.PCA was further used in validating the differences and similarities.As compared with steam distillation,both the number and varieties of the constituents were more in the volatile oils extracted by solid-phase microextraction.Solid-phase microextraction was obviously superior to steam distillation.