[Studies on tannin and hydrolysate in three species of Chinese Caesalpinia plants].
OBJECTIVE
To get Chinese Caesalpinia plants that can replace the imported Tara to produce tannin and gallic acid.


METHODS
Extract tannin with water, condense and hydrolyze the extracts with alkali, the hydrolysates were identified. Furthermore, an enlarged scale experiment was conducted.


RESULTS
Tannin contents of the plants were 32.2%, 46.6% and 58.5% respectively, the converted ratios of raw material to hydrolysate were 154:1, 11.8:1, 3.09-2.79:1 respectively.


CONCLUSIONS
We got the Tara-replacing plants in Chinese Caesalpinia plants for the first time.
Ye
S
S
Guizhou Provincial Institute of Chinese Materia Medica, Guiyang 550002.
Lu
J
J
He
S
S
Chen
L
L
Hu
J
J
D029911:Caesalpinia / Q000737:chemistry* / Q000145:classification; D005707:Gallic Acid / Q000032:analysis*; D047348:Hydrolyzable Tannins / Q000032:analysis*; D010946:Plants, Medicinal / Q000737:chemistry* / Q000145:classification
D047348:Hydrolyzable Tannins; D005707:Gallic Acid