[Investigation on representation methods of dissolubility property of total alkaloid extract from Peganum harmala].
OBJECTIVE
To investigate the representation methods of dissolubility property of total alkaloid extract from Peganum hamala in different solvents, and to investigate the evaluation method of the dissolubility property of extracts from traditional Chinese medicine.


METHODS
The dissolubility property of the whole extract and markers of harmaline and harmine, as well as the particle diameter distribution of the extract in different solvents were evaluated by precipitation method, solubility test, and the particle diameter test.


RESULTS
Both the alkaloid extract and it's index ingredients had good solubility in absolute ethanol, 95% ethanol, and 80% ethanol, while the solubility in 60% ethanol was poor, and worst in water. The sequence of particle diameter of extract in solvents was in the following order water > 95% ethanol > 60% ethanol > 60% ethanol > 80% ethanol.


CONCLUSIONS
The extract has good solubility in the ethanol solution whose concentration is over 80%. The results between precipitation method and index components method have certain correlation. The particle diameter method can provide distribution information of the extract in different solvents. Combination of those three methods could reflect the dissolubility property of extracts from traditional Chinese medicine more comprehensively.
Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, China.
Kemin
K
Ding
Li
L
Liu
Xuemei
X
Cheng
Changhong
C
Wang
Zhengtao
Z
Wang
D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D005591:Chemical Fractionation / Q000379:methods*; D010316:Particle Size; D032443:Peganum / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D012995:Solubility; D012997:Solvents / Q000737:chemistry
D000470:Alkaloids; D010936:Plant Extracts; D012997:Solvents