Angelica dahurica is a perennial herb,Bai Zhi is the root of Angelica dahurica Fisch. ex Hoffm. Benth. et Hook.f.
Contents
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- Basic Botanical Info:Angelica dahurica.
- Botanical Descriptions:Bai Zhi.
- Angelica dahurica Characters and Identifications.
- Preparation Methods of Angelica dahurica.
- Angelica dahurica Constituents and Phytochemicals.
- Archeology and Classical Note:Angelica dahurica.
- Angelica dahurica Pharmacological Study.
- Toxicity and Safety Study:Angelica dahurica.
- Angelica dahurica Administrations and Applications.
- Research Update:Angelica dahurica.
Angelica dahurica Characters and Identifications.:
Shape elongated cone,10 to 25 cm long, 1.5 to 2.5 cm in diameter.Surface gray brown or yellow brown, root blunt head nearly four-vector form or shape, with vertical lines and branches and roots marks Pikong kind of horizontal processes, some arranged in four columns. Depression is the top of the stem scar. Of a solid, white or off-white section, flour, brown cambium ring, nearly square or circular, the Department of Paper casual brown oil a majority points. Smells aromatic,light hot,taste bitter.
Identification:
(1) take the goods powder 0.5 g, and 3 ml ether, shaking five minutes after standing 20 minutes, the supernatant from 1 ml, an increase of 7% methanol solution and hydroxylamine hydrochloride hydroxide and 20% methanol solution of potassium 2 to 3 drops, shake to equilibrium, a water bath at home micro heat, cooling, and diluted hydrochloric acid to adjust pH of 3 to 4, with 1% ethanol solution of ferric chloride was 1 to 2 drops significantly purple.
(2) take the goods powder 0.5 g, 3 ml water, shaking, filtration. Filtrate from 2 drops, points in the filter, home UV lamp (365 nm) under observation, in a blue fluorescence.
(3) take the goods powder 0.5 g, and 10 ml ether, soak 1 hour, constantly shaking, filtration and filtrate Hui dry ether, residue added with Ethyl acetate 1ml and make soluble as the test solution for the other admission isoimperatorin in reference substance, added with Ethyl acetate 1 ml made each containing 1 mg of the mixture solution, as a reference substance solution.
As thin-layer chromatography test, the solution to these two lessons 4ul, respectively at the same point in sodium carboxymethyl fiber silicone adhesive G plate, petroleum ether (30 ~ 60Deg C) - ether (3:2) for the launch of the following 25 Deg C start out, dried, home UV lamp (365 nm) under review.
Chromatography for the test, and reference substance in the corresponding location on chromatography, fluorescence was the same color spots.
Reference:
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- 1.Angelica dahurica is a perennial herb,Bai Zhi is the root of Angelica dahurica Fisch. ex Hoffm. Benth. et Hook.f.
Article Information:
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