Identification of raw herbs
Character identification This product is long cylindrical or semi-cylindrical, length 10-100cm, diameter 3-12cm. The surface is yellow-red to brown-red, with cuts and branches, and vertical cracks. The cross section is slightly glossy, the annual rings are obvious, and some have dark brown, loose texture, and a pith with bright spots. Hard quality. Odorless, taste astringent.
Microscopic identification of cross-section of heartwood: ray width 1-2 rows of cells. The catheters are round in shape and have a diameter of about 160 μm and often contain yellow-brown or red-brown. Wood fiber polygon, the wall is very thick. Wood parenchyma cells are thick, woody, and some contain calcium oxalate crystals. The parenchyma cells are irregularly polygonal, with different sizes, and the walls are slightly woody and pitted.
Powder characteristics: yellow-red. 1 Very many wood fibers and crystal fibers, bundles, orange or colorless. The fiber is slender, with a diameter of 9-22 μm, a thick or slightly thick wall, sparse holes in the twill veins, and a linear or wide cavity. Some fiber bundles contain calcium oxalate crystals around the fiber bundles, forming crystal fibers, containing crystalline cells like square, uneven thickening of the wall, wood. 2 Wood ray radial longitudinal fragments are more easily seen, the cells are rectangular, 32-60μm long, 16-26μm in diameter, wall beaded thickening, woody, with a single pit, tangential wall and pit denser, hole The sulcus was obvious; the tangential-direction ray widened l-2(-3) rows of cells, with a height of about 62 cells, with prominent pits. 3 lines with different sizes of tracheal tube, the largest diameter of about 160μm, more broken, with dense arrangement of pits, mutual columns. The pits are oval or short and the ducts often contain brown lumps. 4 Calcium oxalate formula is less, plate-like, rectangular, square-like or double-cone-shaped, diameter of about 17μm. 5 The wood cells are oblong or narrow, 58-108 μm long, 17 μm in diameter, slightly thicker in wall, and woody, with prominent pits. 6 Brown blocks are irregularly shaped.
Drug Application Identification
Hemu and Chuanxiong, both can relieve blood pain. Hemu heat and heat, Chuanxiong blood qi stagnation. The two drugs can also be matched and applied, and their blood circulation, elimination of phlegm and analgesic effect are enhanced.
Chemical identification of traditional Chinese medicine
(1) Take a small piece of this product and add a dark red calcium hydroxide solution. (check hematoxylin)
(2) Take this product powder 1g, add water 50ml, place 4h, always shake, filter, the filtrate was orange-red, set the UV light (365nm) observation, showed yellow-green fluorescence; take filtered 5ml, add sodium hydroxide Two drops of test solution were scarlet red, observed under a UV lamp (365 nm), and showed blue fluorescence. After adding hydrochloric acid to make the solution acidic, the solution turned orange and was observed under a UV lamp (365 nm). Fluorescence. (Check Brazilian hematoxylin)
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