1, main producing area
Wenshan, Yunnan is a famous local specialty, with different sizes. The bigger the size, the better the quality and the more expensive the price.
2. Main functions
It could have been summed up in the words "stopping bleeding, removing blood stasis and relieving pain". Therefore, Notoginseng has always been used as a medicine to treat traumatic gold sores, and it is rarely used as a tonic.
Extended data:
Identification method of true and false notoginseng.
(1) This product is grayish yellow. There are many starch grains, which are single round, semi-circular or polygonal, with a diameter of 4~30 microns; Many grains consist of 2~ 10 grains.
Resin duct fragments contain yellow secretions. The diameter of tapered, reticulated and threaded conduits is 15~55 microns. Calcium oxalate cluster crystals are rare, with a diameter of 50~80 microns.
(2) Take 2g powder of this product, add 65438±05ml methanol, soak it in warm water for 30min (or shake it in cold water for 65438±0h), and filter. Take 1ml filtrate, evaporate to dryness, and add 1ml acetic anhydride and 1~2 drops of sulfuric acid, which turns yellow and gradually turns red, purple, cyan and dirty green.
Put a few other drops of filtrate on the filter, dry it, and observe it under an ultraviolet lamp (365 nm), showing light blue fluorescence, and add 1 acetone solution saturated with boric acid and 10% citric acid solution drop by drop. After drying, they were observed under ultraviolet lamp and showed strong yellow-green fluorescence.
(3) Take 0.5g of this product powder, add about 5 drops of water, stir it evenly, then add 5ml of water-saturated n-butanol, plug it, shake it evenly for about 65438+/-00 minutes, stand for 2h, and centrifuge to get the supernatant.
Add 3 times the amount of n-butanol saturated water, shake well, place it in layers (centrifuge if necessary), take the n-butanol layer, put it in an evaporating dish, evaporate it to dryness, and add 1 ml methanol to dissolve the residue as a test solution.
In addition, ginsenoside Rb 1, ginsenoside Re, ginsenoside Rg 1 and panax notoginseng saponin R 1 were used as reference substances, and methanol was added to prepare a mixed solution containing 1 mg per 1 ml as reference substances.
According to the TLC test, absorb 65,438 0 microliters of the above two solutions, respectively spot them on the same silica gel G thin-layer plate, use chloroform-ethyl acetate-methanol-water sub-layer solution at 65,438 00℃ as developing agent, unfold, take out, dry, spray sulfuric acid solution, and heat at 65,438 005℃ until the spots become clear.
In the chromatogram of the test sample, spots with the same color appear in the position corresponding to the chromatogram of the reference sample; The same fluorescent spot was observed under purple external light (365 nm).
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