The fingerprint of essential oils of
Pogostemon Cablin(Blanco) Benth from different culture varieties was studied by capillary
gas chromatography,and then analyzed by means of 2 parameters(the relative retention value and the relative peak area) and 2 methods(the fingerprint methods of Strong Eight Peaks and Dividing Sections).As shown in the result,the fingerprint of
Pogostemon Cablin(Blanco) Benth from different culture varieties had some similarities and also had some differences.The similarities were demonstrated as follows: all peaks were stable and the numbers of peaks were the same in each dividing section of the fingerprint;there were 5 common peaks which were parts of Strong Eight Peaks in 12 samples;every reference peak was the most intensive one of Strong Eight Peaks in each sample.The differences were demonstrated as follows: the peak shape and the relative peak area of characteristic peaks were different in each dividing section of the fingerprint;the 19th and 20th peak were the unique ones of Strong Eight Peaks in P.cablin(Blanco) Benth. cv.Zhangjiangensis;the 14th and 17th peak were the unique ones of Strong Eight Peaks in P.cablin(Blanco) Benth.cv.Shipaiensis.The same conclusions could be drawn by means of the fingerprint method either of Strong Eight Peaks or Dividing Sections.