Abstract：OBJECTIVE To study the pharmacognostic characteristics of Dalbergia pinnata (Lour.) Prain and provide the scientific basis for identification and quality standard establishment. METHODS Morphological identification, paraffin section,powder microscopic identification and tissue dissociation were performed to analyze the characteristics of D.pinnata and the cell type of xylem yellow interlayers was determined by microchemistry identification. The chemical components were tested by physicochemical identification. RESULTS Delicate surface wood grain could be observed with resin stripes of yellow-white, yellow-brown, red-brown, purple or black, and there were bitter, spicy and numbing tastes with flowery, coconut-like or cinnamon-like fragrance. It was diffuse-porous wood, while pores solitary or in radial multiples of 2-7 pore clusters also occurred. Axial parenchyma was paratracheal banded. Wood rays were heterogeneous, with 5-14 cells in height and 1-2 cells in width. Besides, three cells in width could also be found but rare. Bordered pit vessels, wood fibers, parenchyma cells and wood ray cells could be observed in the powder and dissociated tissues under microscope. Vasicentric anomalous structure was found in phellem occasionally. D. pinnata contained volatile oil, flavonoids, polyphenols, steroids, triterpenoids, glucoses and organic acids. CONCLUSION This pharmacognosy study on D. pinnata provides significant reference for its identification and quality standard establishment.
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