[Quantitative determination of ethyl-p-hydroxybenzoate in resins extracted from Dracaena cochinchinensis with two technologies].
OBJECTIVE
Quantitative determination was made of ethyl-p-hydroxybenzoate in Dracaena cochinchinensis extracted with two technologies.


METHODS
The sample was resolved with methanol and isolated by TLC, purged with methanol. Tge sample solution was chroma to graphed on a C18 column with acetonitrile-1% acetic acid (31:69) as mobile phase, detecting at 257 nm and content was calculated with external standard method.


RESULTS
The standard curves of ethyl-p-hydroxybenzoate were linear in the range of 0.206-4.12 ng, r = 0.9998. The average recovery was 97.2% and RSD was 1.4%.


CONCLUSIONS
The content of ethyl-p-hydroxybenzoate in D. cochinchinensis extracted with heating-tree technongy is higher than that with traditional technology.
Song
Yue-ying
YY
Medical College of Chinese People's Armed Police Forces, Tianjin, 300162, China.
Zhang
Qing-yun
QY
Hu
Ying-qing
YQ
Deng
Chang-hu
CH
D031409:Dracaena / Q000737:chemistry*; D010226:Parabens / Q000032:analysis*; D010946:Plants, Medicinal / Q000737:chemistry*; D013678:Technology, Pharmaceutical / Q000379:methods*
D010226:Parabens; C012313:ethyl-p-hydroxybenzoate