Panax japonicus

Panax japonicus

Zhu Jieshen

[English name] rhizomapanacis japonici

[source] this product is the dried rhizome of Panax japonicus C.A.Mey.

In autumn, the taproot and bark were removed and dried.

[character] the product is slightly cylindrical, slightly curved, some with fleshy lateral roots. The length is 5-22cm and the diameter is 0.8-2.5cm. The surface is yellow or yellowish brown, rough, with dense longitudinal wrinkles and root marks. The internodes are 0.8-2 cm long, and each internodes has a concave stem mark. It is hard with yellowish white to light yellowish brown cross section and yellow punctate vascular bundles arranged in rings. Odorless, bitter and slightly sweet.

[identification] (1) cross section: the cork layer consists of 2-10 rows of cells. The cortex is wider with a few secretory channels. The vascular bundles are tough and arranged in rings, and the cambium forms rings. The phloem occasionally has secretory channels. The xylem bundles are arranged radially in 2-4 strands or in a single row, and the wood fibers are usually in 1-4 bundles, some of which are surrounded by large lignified sclerenchyma cells. There is a medulla in the center. There are many calcium oxalate group crystals in the parenchyma cells of this product, with a diameter of 17-70 μ m and starch granules. The powder is yellowish white to yellowish brown. Wood fiber bundles, about 25 μ m in diameter, slightly thick wall, pit inclined crack shape, some cross in herringbone. Calcium oxalate clusters are common, with a diameter of 15-70 μ M. The diameter of the scalariform, reticulated or bordered vessels was 20-70 μ M. Fragments of resin channel are occasionally seen, containing yellow lumps. The fragmented cells of cork tissue were polygonal, rectangular or irregular with thick wall. The powder grains are numerous, single, round, about 10 μ m in diameter, or gelatinized.

(2) Take 0.5g of the powder, add 5ml of ethanol, shake for 5min, filter, take the filtrate and evaporate to dryness, drop the saturated chloroform solution of antimony trioxide, and evaporate to dryness again to show purplish red.

(3) Take 1g powder of this product, add 5-10 drops of water, mix well, then add 10ml saturated n-butanol solution, tightly plug, shake for about 10 minutes, place the filtrate, filter, evaporate the filtrate, add 10ml mixed solution (1 → 20) of sulfuric acid and 30% ethanol to the residue, Heat and reflux for 2 hours, extract with 20 ml chloroform, separate chloroform layer, wash with 10 ml water, discard the washing solution, evaporate chloroform solution, dissolve the residue with 1 ml methanol, and take 2 mg oleanolic acid, 0.5 mg Panaxadiol and 0.5 mg Panaxatriol as control solution.

According to the test of thin layer chromatography (Appendix VI b), 5 μ l of the above test solution and 1 μ l of the reference solution were absorbed, and then they were respectively put on the same silica gel G thin layer plate, developed with benzene ethyl acetate (1:1) as the developer, taken out, dried, sprayed with 10% sulfuric acid ethanol solution, heated at 105 ℃ until the spots were clear.

In the chromatogram of the test sample, spots of the same color were found at the corresponding positions of the chromatogram of the reference sample.

[processing] removing impurities. It's time to pound.

It is sweet, slightly bitter and warm. It belongs to liver, spleen and lung meridians.

[function and indications] nourishing and strengthening, dispersing blood stasis and relieving pain, hemostasis and expectorant. It is used for weakness after illness, cough, hemoptysis, cough, phlegm and falling injury.

[usage and dosage] 6-9g.

[storage] store in a well ventilated and dry place to prevent moths.

Chinese PinYin : Zhu Jie Can