Identification of raw herbs
Character identification
1. Yellow rhizome nodules. One end is thick, discoid like, one end is thin, cylindrical, full shape is similar to chicken head, 2.5-11cm long, thick end 1-2cm in diameter, often short branches, the upper stem marks are obvious, round, Dimples, diameter 2-3mm, visible around the link; thin end 2.5-4cm, diameter 5-10mm, the link is obvious, the internode distance 5-15mm, there are more fibrous roots or root marks, diameter of about 1mm. The surface is yellow-brown, translucent and wrinkled; the columnar surface has a longitudinal texture. Hard and brittle or slightly flexible, easily broken, yellow-white cross-section, granular, there are many yellow-brown bundles to the company. Gas slightly, taste sweet.
2. The flowering rhizomes are rhizomes or lumps, slightly cylindrical, 2-3 cm in diameter. The scar on each nodule is obvious, disc-shaped, about 1cm in diameter. Obviously cylindrical section, there are many traces of roots, diameter of about 1mm. The surface is yellowish brown with fine wrinkles. Solid, slightly flexible, fractured granular, with numerous yellow-brown vascular bundles. Gas slightly, taste sweet.
3. Radix Scutellariae rhizome hypertrophy, ginger fast or beaded, straight to 2-4cm or more, each nodule has obvious scars, disc-shaped, slightly concave, should go to 5-8mm; to be more root marks, often prominent, should The diameter is about 2mm. The surface is yellow-white to yellow-brown, with obvious links and irregular longitudinal wrinkles. Quality, flexible, not easily broken, yellow-white cross section, flat, granular, there are many dark vascular bundle dots. Gas slightly, sweet, sticky.
Positive identification
Root cross section:
(1) 1 row of Huangjing epidermal cells, outer layer of stratum corneum; some sites can see 4-5 columns of corky cells. The cortex is narrow and the endothelial layer is not obvious. The vascular bundles in the middle column are vascular bundles in the near-endothelial layer, with small vascular bundles, slightly arranged in a ring shape, gradually increasing inwardly, with multiple external toughness patterns, and occasionally with a phenotype. There are more mucous cells distributed in the parenchyma, with a long diameter of 37-11 μm, a short diameter of 20-50 μm, and a calcium oxalate needle beam.
2. Flowering Polygonatum epidermis cells in a row, the outer layer of the stratum corneum; local may cork tissue. The cortex is obvious. The vascular bundles are often hashed, externally tough, and occasionally the wood type. The mucous cells are large, with a major diameter of 50-140 μm and a minor diameter of 25-50 μm, and contain calcium oxalate crystals.
3. There are 1 epidermal cells of epidermis, exoskeleton, and sometimes 4-5 cork cells. Vascular hash, week wood type, rare external tough type. Mucus cells, long diameter 36-110μm, short diameter 20-66μm, containing calcium oxalate needle beam.
Jiangsu Tiera Biotechnology Co., Ltd , https://www.tierabio.com