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Quantitative determination of ethyl-p-hydroxybenzoate in resins extracted from Dracaena cochinchinensis with two technologies / 中国中药杂志
China Journal of Chinese Materia Medica ; (24): 323-325, 2004.
Article in Chinese | WPRIM | ID: wpr-256363
ABSTRACT
<p><b>OBJECTIVE</b>Quantitative determination was made of ethyl-p-hydroxybenzoate in Dracaena cochinchinensis extracted with two technologies.</p><p><b>METHOD</b>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 (3169) as mobile phase, detecting at 257 nm and content was calculated with external standard method.</p><p><b>RESULT</b>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%.</p><p><b>CONCLUSION</b>The content of ethyl-p-hydroxybenzoate in D. cochinchinensis extracted with heating-tree technongy is higher than that with traditional technology.</p>
Subject(s)
Full text: Available Index: WPRIM (Western Pacific) Main subject: Parabens / Plants, Medicinal / Chemistry / Technology, Pharmaceutical / Dracaena / Methods Language: Chinese Journal: China Journal of Chinese Materia Medica Year: 2004 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Parabens / Plants, Medicinal / Chemistry / Technology, Pharmaceutical / Dracaena / Methods Language: Chinese Journal: China Journal of Chinese Materia Medica Year: 2004 Type: Article