Identification of Chinese herbal medicines
Medicinal character
Silver Bupleurum
The product is cylindrical, occasional branches, length 15 ~ 40cm, diameter 0.5 ~ 2.5cm. The surface is light brown-yellow to light-brown, with distorted longitudinal wrinkles and rooting marks. There are many cave-like or dish-shaped depressions. It is commonly known as "sand-eye". Broken brown spots are visible from the sand holes, fine sand is scattered, and the root head Slightly inflated, there are dense, streaky buds, stems, or rhizome residues that are commonly referred to as "pearl plates." Hard and brittle, easy to break, cross-section is not flat, relatively loose, cracked, skin is very thin, wood has a yellow, white and radial texture. Gas slightly, sweet. There are branches in the cultivated products and there are many twists in the lower part. The diameter is 0.3~1.2cm. The surface is light brown or yellowish brown, and the longitudinal wrinkles are delicate and delicate. Most of the root heads have verrucous protrusions. Little bit of trachoma. The fracture surface has a tight texture, few cracks, and a slight powdery texture. The radial texture of the wood is not obvious. Sweet taste.
Silver Bupleurum is a commonly used Chinese herbal medicine in China and has a long history of application. The product is a dry root of silver bamboo and wood plants. For the "Chinese Pharmacopoeia" 1990 edition. The name of Yinchahu was first seen in the "Compendium of Materia Medica," and was recorded as a pseudo-fill of Bupleurum. Silver Bupleurum is cold, tastes slightly sweet, liver and stomach. There is a clear heat, in addition to the role of heat. For yin deficiency fever, bone steam and labor heat, pediatric fever and so on.
Character identification
The roots are cylindrical, 15-40cm long, 1-2.5cm in diameter, and the roots are often broken. Yellowish white or pale yellow surface, longitudinal wrinkles. Obviously, it gradually twists downward toward the left, sparsely with hole-like depressions (fine root marks), and it is commonly called "trachoma." The head of the top root is slightly enlarged, with dense brownish-brown, scalloped stem marks, and infertile spores. It is commonly referred to as the "pearl plate." Hard and brittle, easy to break, cracks in the cross-section; skin is thin, and the wood has yellow, white and radial textures (rays and xylem bundles are interspersed). Gas slightly, tasteless, slightly sweet. The root bar is long and slender, the surface is yellowish-white and glossy, and the top has a "pearl plate." The quality is better.
Physical and chemical identification
Take the product powder 1g. Add ethanol 10ml, immersed for 15min, filtered. 2ml of the filtrate was collected and observed under a UV lamp (365 nm) to reveal bright blue-purple fluorescence.
Drug Application Identification
1, Yin Bupleurum, Artemisia are cooling blood in addition to steamed goods, but the artemisinin spicy incense through the bones, can make warm evil from the yin points through the Zhi Yang points, so the temperature of the evil wounded camp, night heat early cool, with It is appropriate. It can clear heat and relieve heat, treat malaria and fever, and is a good product for blinding fever; while Yin Bupleurum has no clear power, but it can remove heat from children.
2. Yinchaihu and Bupleurum are similar in name and have the power to heat down. However, Yinchaohu can clear heat, in addition to phlegm-heat, Youshan treatment of yin deficiency fever, children with fever; and Bupleurum can express fever, good governance of exogenous fever, evil in the cold and heat exchange between Shaoyang.
Microscopic identification
Cork cells numbered to more than 10 columns, flat rectangular or square-like, brown-yellow. The cortex is narrow, with 4-8 columns of tangentially elongated parenchyma cells; the phloem sieve group is evident; the layers form a ring; the xylem is reached, the catheter is slightly arranged radially, and the wood ray is wider than 10 rows of cells. Parenchyma cells contain calcium oxalate crystals, especially in ray cells, calcium oxalate clusters and tiny oil droplets are still visible.
Powder characteristics: yellowish white.
Calcium oxalate crystals are very numerous, scattered or stuffed in parenchyma cells; crystals are triangular, square-like, arrowhead-shaped, wedge-shaped, diamond-shaped, or irregular (root)-shaped, 2-9(-18) μm in diameter .
2. Calcium oxalate clusters are numerous, scattered or aggregated with the sand crystals in parenchyma cells, 9-3 μm in diameter. There are many tracheae and bordered pits with a diameter of 9-134μm.
3, cork cells light brown, thin wall, micro-wood.
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