qián hú 2 English reference
Angelica decursiva [Landau Chinese-English Dictionary]
Peucedanum declursivum Maxim. [Landau Chinese-English Dictionary]
radices peucedani [Landau Chinese-English Dictionary]
radices peucedani declaivi [Landau Chinese-English dictionary]
hogfennel root [Xiangya medical dictionary]
peucedani. radix [Xiangya medical dictionary]
peucedanum decursivum [21st century bilingual dictionary of science and technology]
whiteflower hogfennel root [Xiangya medical dictionary]
root of purple flowered peucedanum [Xiangya medical dictionary].
Radix Peucedani (La) [Chinese Medicine Terminology Examination Committee. Chinese Medicine Terminology (24)]
hogfennel root [Chinese Medicine Terminology Examination Committee. Chinese Medicine Terminology (24)] 3 Overview
Peucedanum is the name of Chinese medicine, and The Theory of Leigong Baking is published. It is the dried root of Peucedanum praeruptorum Dunn or Peucedanum decursivum Maxim. of Umbelliferae.
the pharmacopoeia of the people's Republic of China (21 edition) records the pharmacopoeia standard of this Chinese medicine. 4 Latin name
Radix Peucedani (La) (Terminology of Traditional Chinese Medicine (24)) 5 English name
hogfennel root (Terminology of Traditional Chinese Medicine (24)) 6 Source
Peucedanum praeruptorum Dunn or Peucedanum purpurea (Mimium) of Umbelliferae. 7 origin
Peucedanum praeruptorum mainly produces in Zhejiang, Jiangxi, Anhui, Hunan and other places [2]. 8. The taste of Qianhu is bitter, pungent and slightly cold. Into the lung meridian [2]. 9 efficacy and indications
Peucedanum has the effects of dispelling wind and clearing heat, lowering qi and resolving phlegm, and can treat wind-heat common cold, lung heat, cough, asthma and phlegm, chest and diaphragm fullness and nausea [2]. 1 usage and dosage of peucedanum
decoction: 4.5 ~ 9g [2]. 11 chemical constituents of Peucedanum praeruptorum
Peucedanum praeruptorum root contains Peucedanum praeruptorum A, B, C, D, E, and a small amount of Peucedanum praeruptorum, as well as volatile oil and mannitol [2].
Peucedanum praeruptorum root contains volatile oil, imperatorin, imperatorin, Andelin, Decursin, 4' isovaleryl Decursidin, umbelliferone and so on. It also contains mannitol and sponge sterol [2]. 12 pharmacological effects of peucedanum praeruptorum
praeruptorin can increase coronary flow in isolated heart, inhibit the contraction of rabbit aortic strips induced by calcium chloride and high potassium depolarization, and inhibit the extracellular calcium contraction induced by serotonin, but it does not affect the endogenous calcium contraction [2].
Peucedanum purpurea decoction has expectorant effect on anesthetized cats, and Peucedanum has some antibacterial effects [2]. 13 pharmacopoeia standard of peucedanum 13.1 name
peucedanum
Qianhu
PEUCEDANI? RADIX 13.2 source
This product is Peucedanum? praeruptorum? Dunn's dried roots. From winter to the next spring, when the stems and leaves wither or the flowering stems are not drawn, they are excavated. 13.3 characteristics
this product is irregular cylindrical, conical or spindle-shaped, slightly twisted, with branches at the lower part, 3 ~ 15cm long and 1 ~ 2cm in diameter. The surface is dark brown or grayish yellow, and there are many stem marks and fibrous leaf sheath residues at the root head, with dense fine ring lines at the upper end and longitudinal grooves, longitudinal wrinkles and transverse lenticels at the lower part. Soft in quality, hard in dry, breakable, irregular in cross-section, yellowish white, scattered with most brownish-yellow oil spots on the skin, and the cambium is ringed with brown rays. The breath is fragrant, and the taste is slightly bitter and pungent. 13.4 identification
(1) cross section of this product: the cork layer is ten to dozens of rows of flat cells. The tubing near the inner layer of the plug is sparsely arranged in a round. The phloem is broad, and most cracks of different sizes can be seen on the outside; Most of the oil pipes are round and scattered, and the phloem rays are mostly curved near the cortex. The cambium is annular. Large vessels and small vessels in xylem are arranged alternately; The line width of wood shoots is 2 ~ 1 rows of cells, and oil pipes are scattered sporadically; Wood fiber is rare. Thin-walled cells contain starch granules.
(2) Take .5g of this product powder, add 1ml of chloroform, perform ultrasonic treatment for 1min, filter, evaporate the filtrate to dryness, and add 5ml of methanol to dissolve the residue as the test solution. In addition, the reference substances of praeruptorin A and praeruptorin B were taken, and methanol was added to make a mixed solution containing .5mg per 1ml as the reference solution. According to the test of thin-layer chromatography (Appendix Ⅵ D), absorb 5μl of the above two solutions, spot them on the same silica gel G thin-layer plate, and use petroleum ether (6 ~ 9? C) Using ethyl acetate (3:1) as developing agent, developing, taking out, air drying, and inspecting under ultraviolet lamp (365nm). In the chromatogram of the test sample, fluorescent spots with the same color appear at the positions corresponding to the chromatogram of the reference sample. 13.5 check that the moisture content
in 13.5.1 shall not exceed 12.% (appendix ⅸ h first method). 13.5.2 the total ash
shall not exceed 8.% (appendix ⅸ k). 13.5.3 the acid-insoluble ash
shall not exceed 2.% (appendix ⅸ k). 13.6 the extract
shall be determined by the cold immersion method under the alcohol-soluble extract determination method (appendix ⅹ a), and dilute ethanol shall be used as the solvent, which shall not be less than 2.%. 13.7 content determination
according to high performance liquid chromatography (appendix ⅵ d). 13.7.1 chromatographic conditions and system adaptability test
octadecylsilane bonded silica gel is used as filler; Methanol-water (75: 25) was used as mobile phase; The detection wavelength is 321nm. The theoretical plate number should be not less than 3 according to the peak of praeruptorin A.. 13.7.2 preparation of reference solution
take a proper amount of praeruptorin A and praeruptorin B as reference materials, accurately weigh them, and add methanol to make a mixed solution containing 5μg each in 1ml, thus obtaining the product. 13.7.3 preparation of test solution
take about .5 g of this product powder (passed through the No.3 sieve), weigh it accurately, put it in a conical flask with a stopper, add 25 ml of chloroform precisely, tightly plug it, weigh it, perform ultrasonic treatment (power is 25W, frequency is 33 kHz) for 1 minutes, let it cool, weigh it again, and make up with chloroform. Accurately measure 5ml of the filtrate, evaporate it to dryness, dissolve the residue with methanol, transfer it to a 25ml volumetric flask, add methanol to the scale, and shake it evenly. 13.7.4 determination method
accurately suck 1μl of reference solution and 1 μ l of test solution respectively, inject them into a high performance liquid chromatograph, and determine them, thus obtaining the product.
calculated as a dry product, this product contains not less than .9% praeruptorin A (C21H22O7) and not less than .24% praeruptorin B (C24H26O7). 13.8 Radix Peucedani pieces 13.8.1 Processed 13.8.1.1 Radix Peucedani
to remove impurities, washed, moistened thoroughly, sliced and dried.
this product is a round or irregular sheet. The outer epidermis is dark brown or grayish yellow, and sometimes residual fibrous leaf sheath residues can be seen. The section is yellowish white to light yellow, and there are many brown oil spots scattered in the skin, and a brown ring and radial texture can be seen. The breath is fragrant, and the taste is slightly bitter and pungent. 13.8.1.1.1 Check that
(moisture) is the same as that of medicinal materials. 13.8.1.1.2 the determination of extract and content
is the same as that of medicinal materials. 13.8.1.2 honey peucedanum praeruptorum
Take peucedanum praeruptorum slices and fry them according to honey-frying method (Appendix Ⅱ D) until they are not sticky.
this product is shaped like Qianhu tablet, with a yellowish brown surface, slightly shiny and moist. It tastes a little sweet. 13.8.1.2.1 The determination of extract and content < P > is the same as that of medicinal materials. 13.8.2 sexual taste and channel tropism
bitter, pungent, slightly cold. Return to lung meridian. 13.8.3 Functions and indications < P > Reduce qi and eliminate phlegm, dispel wind and clear heat. It can be used for asthma due to phlegm-heat, yellow and thick expectoration, and cough due to wind-heat. 13.8.4 usage and dosage
3 ~ 1g. 13.8.5 storage
keep it in a cool and dry place to prevent mildew and moth. 13.9 Source