Herbal identification
Identification of traits: The seeds are slightly flat and round, slightly raised in the middle, about 2-3cm in diameter and about 5mm in thickness. The surface is gray-brown or gray-black, rough, with a concave reticular pattern, and there are more than ten opposing jaggies on both sides. The outer cortex is firm and brittle, and the seed coat is filmy. The surface is gray-green and villous. The inside is two large-shaped hypertrophy cotyledons, yellow-white, oil-rich, with a special greasy gas and bitter taste. It is better to have full, unbroken kernels, body weight, yellow and white kernels, and no oil.
Exocarp epidermal cells have a slightly cross-sectional view of the epidermis, the outer layer of the stratum corneum, the length of the cells are different, the sidewalls are slightly curved or wavy; the surface view is polygonal or square-like, and the vertical wall is relatively straight or slightly curved.
Seed skin cells are smaller, thicker, and contain grayish-brown cells.
The stellate-shaped thick-walled cells are irregularly branched and interlocked with each other. The boundaries are not clearly defined, the branches are more truncated, the walls are thicker, and the woody cells are irregular and have pores.
The outer epidermis has a large epidermis-like epidermis, with irregular shapes and extended lengths. The boundary is not clear, the wall is wavy, the stratification is clear, and the pores are not obvious.
The epidermis stellate parenchyma cells are irregularly branched, with thin or slightly thick walls, micro-lignification, inconspicuous pore sulcus, and some with square-shaped pits. In addition, cotyledon cells are ambiguous with powdered particles and fatty oil droplets. This product is full, the shell is not broken, the kind of kernel color yellow is better.
Microscopic identification of seed cross-section: the epidermis cells of the seed coat 1 layer, nearly rectangular, often prolonged, thin wall; under the epidermis is 3-4 thin-walled cells, nearly square or short round, smaller, neatly arranged, The inner side is more than ten layers of nearly round or irregularly shaped thick-walled cells, large and extremely thick wall, edge wavy, more stratified; inside is 3-4 layers of rectangular or oblong parenchyma cells, the wall is often presented In the wavy form, the cell walls on both sides of the seed gradually thicken, and the cell wall thickens to longitudinally elongated stone cells at both ends, and the cross section is circular. The endosperm parenchyma cells range from two to many layers, some of which have become decadent, and the cotyledon parenchyma is full of aleurone particles.
Powder characteristics: grayish yellow or light brownish yellow.
1 There are two kinds of thick-walled cells: a brownish-yellow, irregularly oval or oblong, more wavy, 50-338μm in length, 45-143μm in width, and 9-50μm in wall thickness, woody and lamellar. Cell stenosis or few cells. The other is in the shape of a bar or rod, 100-270 μm long, about 25 μm in diameter and about 10 μm in wall thickness, with a deep wavy edge.
2 Cotyledons cells pentagonal or hexagonal, filled with aleurone and fatty oil, fatty oil round, surface visible mesh texture.
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