Extraction method of Liuhedan bulk drugs
An extraction process and raw material medicine technology, which is applied in the field of medicine, can solve the problems of low content of chrysophanol components and further optimization of extraction conditions
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Embodiment 1
[0024] Embodiment 1 extraction process of the present invention
[0025] Prescription of raw materials: rhubarb 140g, white and 81g, cork 140g, ebony 65g, angelica 30g, licorice 65g.
[0026] Weigh the four medicinal materials of rhubarb, Phellodendron cortex, licorice, and Angelica dahurica, add 12 times the volume of the medicinal materials in 40% v / v ethanol aqueous solution, heat and reflux for extraction, 1.5 hours each time, extract twice, filter, and combine twice The filtrate was concentrated to obtain an alcohol extract;
[0027] Weigh the white and black plums of the prescribed amount, add 10 times the volume of medicinal materials in purified water, reflux extraction, 1.5 hours each time, extract twice, filter, combine the two filtrates, concentrate, and obtain the water extract;
[0028] Concentrate the above-mentioned alcohol extraction and water extract respectively to a relative density of 0.8-1.10 (measured at 60-70°C); add the concentrated water extract to th...
experiment example 1
[0057] Experimental example 1 Comparison of alcohol extraction process parameters of raw materials rhubarb, Phellodendron phellodendron and Angelica dahurica
[0058] According to the prescription ratio, take 9 parts of rhubarb, Phellodendron phellodendron, and Angelica dahurica medicinal materials respectively according to the dosage shown in Table 2, carry out reflux extraction under the conditions of ethanol concentration, reflux time, reflux times and solid-liquid ratio shown in Table 3, and combine the extracts , filtered, and the filtrate was recovered until it had no alcohol smell, concentrated, transferred to a dried container, and weighed after drying under reduced pressure at 65 degrees Celsius. Measure and calculate the transfer rate of the total anthraquinone in the extract yield and the extract, and score with the weight that the extract yield and the total anthraquinone transfer rate account for 50% each (score=the actual yield of each group of extract / each time ...
experiment example 2
[0064] The extraction process comparison of experimental example 2 crude drug Radix Glycyrrhizae
[0065] 1. Water extraction process
[0066] The traditional technology of licorice is decocted with water. Therefore, in this experiment, licorice is decocted with black plum, white and medicinal materials. The specific method is as follows:
[0067] According to the prescription ratio, take 10 parts of ebony, licorice, white and medicinal materials respectively by the dosage shown in Table 4, carry out reflux extraction under the conditions of extraction time, extraction times and solid-liquid ratio shown in Table 5, combine the extracts, filter After filtration, the filtrate was recovered until it had no alcohol smell, concentrated, transferred to a dried container, dried under reduced pressure at 65°C and weighed. Measure and calculate the yield of extract, the transfer rate of liquiritin and glycyrrhizic acid in the extract, and score with the weight of the total transfer ra...
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