Physical and chemical identification of Prunella vulgaris
Physical and chemical identification
1. Take 1g of the product powder, add 15ml of ethanol, heat reflux for 1 hour, and filter. Take the filtrate 1ml, set the evaporating dish, evaporated to dryness, add 1 drop of acetic anhydride to the residue to dissolve, add trace amounts of sulfuric acid, that is, purple, then dark green.
3. Take this product powder 1g, add ethanol 20ml, heat reflux for 1 hour, filtered, the filtrate evaporated to dry, soaked with petroleum ether (30 ~ 60 °C) 2 times, each time 15ml (about 2 minutes), pour petroleum ether, The residue was dissolved in 1 ml of ethanol to prepare a test solution. Another ursolic acid reference substance was added and ethanol was added to prepare a solution containing 1 mg per 1 ml as a reference solution. According to thin layer chromatography (Appendix VIB) test, 2 μl of each of the above two solutions were pipetted on the same silica gel G thin plate, with cyclohexane-chloroform-ethyl acetate-glacial acetic acid (20:5:8: 0.5) for the developing agent, expand, remove, air dry, spray with 10% ethanol solution of sulfuric acid, 100 °C heating to spot color is clear, set the daylight and UV light (365nm) under the inspection. In the chromatogram of the test sample, spots or fluorescent spots of the same color are respectively displayed at the positions corresponding to the chromatogram of the reference substance.
[taste] bitter, cold.
1 "The Classic": Bitter, cold.
2 "Do not record": non-toxic.
3 "Materia Medica": taste bitter, slightly pungent.
Prunella vulgaris
ã€Cursuit】Into the liver and gallbladder.
1 "Southern Yunnan Materia Medica": Liver.
2 "Ben Cao Jing Shu": Foot yin, Shaoyang Jing.
ã€Usage and Dosage】 Oral: Decoction, 10 to 25 grams; cream or into the pill, scattered.
External use: Jianshui wash or apply.
Prunella vulgaris (8 photos) [Storage] set dry place.
ã€Preparation】Prunella Paste
ã€Remarks】
2. For phlegm on the liver, red eyes and swelling, eye pain; headache, dizziness embolism.
3. Used to check the nucleus. The nucleus of the ancestral calendar is composed of liver qi stagnation, long-term fire, and phlegm fire.
Protein series
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