Identification of raw herbs

Character identification

This product is a very fine powder, grayish blue or dark blue, light weight, easy to fly, sticky paper. Grassy, ​​slightly sour taste. Lightweight, fine powder, can float on the surface, and it is better to have a purple flame when burning. Such as the quality of solid, was a mass, there are white dots, set the quality of the water in the subsidence of particles.

Mainly produced in Fujian, Yunnan, Jiangsu, Anhui and other places. In addition, Jiangxi, Henan, Sichuan and other places are also produced. Fujian produced the best quality, known as Jian Qing Ye.

Microscopic identification

Cross-section of rhizomes: 1 column of epidermal cells. The cortex is wide and the cells are tangentially elongated; the globules have more cells, which are round or elliptical and 17-33 μm in diameter; the fibers are scattered or bundled, and the walls are either woody or non-woody. The xylem catheters are scattered or aggregated together; the wood fiber is more developed and the wall is wooded. Rays are 2-8 cells wide. The pit of cells in the pith is obvious;

Physical and chemical identification

1, take a small amount of this product, with a slight fire burning, there are purple smoke.

2, take a small amount of this product, add nitric acid, resulting in bubbles and brown red or yellow brown.

3, thin-layer chromatography to take this product 50mg, add 5ml chloroform, stir, filter, for the test solution. Another indigo and indirubin reference substance was added and chloroform was added to prepare a mixed solution of 1 mg per 1 ml as a reference solution. Each 5-10 μl of the above two solutions was pipetted on the same silica gel G plate, and benzene-chloroform-acetone (5:4:1) was developed, removed, and allowed to dry. In the chromatogram of the test sample, the spots of the same color appear on the positions corresponding to the chromatogram of the reference substance.

Dehydrated Carrot Granules

Vegetable Chopped Carrot,Carrot Flakes For Sell ,Dehydrated Carrot Slices,Carrot Powder By Dried

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