A thin-layer chromatographic detection method for the leaves of Bamboo in Qingwenbaidu powder
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A technique of Qingwen Baidu Powder and TLC, which is applied in the field of thin-layer chromatography detection of pale bamboo leaves in Qingwen Baidu Powder, can solve problems such as poor effect, and achieves excellent development performance, remarkable effect, and extremely high degree of spot separation. good effect
Active Publication Date: 2018-01-30
SICHUAN DECHENG ANIMAL HEALTH PROD
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is: in the prior art, the thin-layer identification method of light bamboo leaves in Qingwen Baidu powder has a poor effect, and the purpose is to provide a thin-layer chromatography of light bamboo leaves in Qingwen Baidu powder with excellent detection effect Detection method
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Embodiment 1
[0026] A kind of thin-layer chromatography detection method of the leaves of Pachyrhiza in Qingwenbaidu Powder, comprising the following steps:
[0027] (1) Prepare the test solution, control medicinal material solution, and negative sample solution by using Qingwenbaidu powder, Danzhu leaf and Qingwen Baidu powder excluding Danzhu leaf; the specific preparation process is as follows:
[0028] Take 2g of Qingwenbaidu Powder, add 10ml of methanol, sonicate for 30min, filter, evaporate the filtrate to dryness, add 2mL of methanol to dissolve to obtain the test solution;
[0029] Take 0.5g of the reference medicinal material Pachyphyllum edulis, add 10ml of methanol, sonicate for 30min, filter, evaporate the filtrate to dryness, add 2mL of methanol to dissolve, which is the reference medicinal solution;
[0030] First prepare the prescription of Qingwenbaidu powder that does not include Danzhu leaves, take 1 / 500 of the prescription amount, add 10ml of methanol, ultrasonicate for ...
Embodiment 2
[0035] This embodiment is a comparative example of embodiment 1. In this embodiment, the composition ratio of the developing agent is different, as follows:
[0036] The developer is xylene, ethyl acetate, acetone, formic acid, and water in a ratio of 2.2:4.8:2.5:0.8:0.6.
[0037] When using the developing agent of the proportion of this embodiment to process, such as figure 2 As shown, the test product chromatogram is consistent with the negative sample chromatogram, and the negative interference is serious.
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Abstract
The invention discloses a thin-layer chromatography detection method for lophatherum gracile in scourge-clearing toxin-vanquishing powder.The problem that the effect of an existing thin-layer authentication method for lophatherum gracile in scourge-clearing toxin-vanquishing powder is poor is solved.The method comprises the steps that 1, the scourge-clearing toxin-vanquishing powder is utilized for preparing a solution for test articles; 2, the solution for test articles is sucked to be dispensed on a silica gel thin-layer plate, xylene, ethyl acetate, acetone, formic acid and water with the ratio of 2.2:4.8:2.5:0.8:1.5 are adopted as a development solvent, and the development agent is developed, taken out and dried in air; 3, the ultraviolet lamp is placed under an ultraviolet lamp to be viewed.The thin-layer chromatography detection method has the advantages that the development performance is excellent, and other ingredients in the thin-layer chromatography detection method have no effect on the lophatherum gracile detection effect.
Description
technical field [0001] The invention relates to a detection method, in particular to a thin-layer chromatographic detection method of dandelion leaves in Qingwenbaidu powder. Background technique [0002] Qingwenbaidu San is a famous prescription created by Yu Shiyu, a famous febrile disease scientist in the Qing Dynasty. It is contained in the book "Epidemic Disease Yide" written by him, and it is now included in the second volume of the 2010 edition of "The People's Republic of China Veterinary Pharmacopoeia" . This medicine is composed of 14 medicinal materials such as gypsum, rehmannia glutinosa, buffalo horn, and coptis. The prescription of Qingwenbaidu powder includes: raw gypsum 120g, rehmannia 30g, buffalo horn 60g, coptis 20g, gardenia 30g, moutan cortex 20g, scutellaria baicalensis 25g, red peony root 25g, scrophulariaceae 25g, anemarrhena 30g, forsythia 30g, Platycodon grandiflorum 25g, licorice 15g, and bamboo leaves 25g; it has the effect of purging fire, deto...
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