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    Home > Precautions and product features of traditional Chinese medicine extraction and concentration equipment

    Precautions and product features of traditional Chinese medicine extraction and concentration equipment

    • Last Update: 2018-06-22
    • Source: Internet
    • Author: User
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    There are many kinds of extraction and concentration equipment for traditional Chinese medicine Because of the different process adopted by each manufacturer, the combination of extraction and concentration equipment is also different Hot reflux extraction unit is a kind of extraction and concentration equipment which is widely used at present In this paper, the precautions and characteristics of the product are introduced as follows: points for attention in the use of the hot reflux unit: (1) the amount of medicinal materials in each tank shall be determined by verification, and the principle of hot reflux extraction determines that the amount of materials in each tank is larger than that in the multi-functional extraction tank; (2) the time of starting reflux shall be determined according to the concentration of the liquid medicine If the reflux time is too early and the concentration of the extract is too low, the effective extraction time will be prolonged If the reflux time is too late, the concentration of the extract is saturated, which is not conducive to the extraction of effective components, but also wastes energy After extracting (boiling) for 1h, put part of the solution into the concentration tank, start reflux and timing Note: when the extraction tank is boiling, the air in the tank shall be removed, otherwise the pressure will be produced in the tank; (3) the temperature of reflux liquid shall be controlled, not too low At the same time, the temperature in the extraction tank shall be well controlled and the constant temperature shall be kept as far as possible Cold extraction (below 90 ℃) has few impurities, good clarity, high efficiency of hot extraction and poor clarity The purpose of boiling is to enhance the diffusion and permeation of the solution Although boiling can reduce the concentration difference of the solution in a short time, it will make many macromolecular impurities dissolve out; (4) determine the extraction and concentration time Too much extraction will increase the impurities in the extraction solution, which will make it more difficult to separate in the later stage If the time is too short, the extraction will not be complete and waste raw materials (it is necessary to check the solution concentration in the extraction process) During the extraction and concentration of traditional Chinese medicine, it should be noted that: according to the process of multi-functional extraction tank, the traditional Chinese medicine will form a cold pile at the bottom of the extraction tank, reduce the extraction amount of effective ingredients, and cause waste of traditional Chinese medicine The product features of hot reflux extraction unit are as follows: (1) combined with the three principles of reflux extraction, percolation extraction and Soxhlet extraction of the existing extraction equipment, combined with the external thermal cycle concentration technology, the two processes of extraction and concentration are concentrated on one equipment at the same time; (2) the secondary steam generated by concentration is continuously sent into the extraction tank as a new heat source for extraction, maintaining the extraction temperature in the extraction tank; (3) a large amount of steam in the extraction tank enters the reflux device to condense into hot condensate and falls back to the extraction tank, which is uniformly added to the medicinal material surface as a new solvent The new solvent passes through the medicinal material layer from top to bottom, dissolves the soluble substance in the medicinal material to the bottom of the extraction tank, eliminates the cold pile of medicinal material, and fully extracts The extraction solution enters the concentration tank, continuously reduces the concentration difference of the traditional Chinese medicine solution in the extraction tank, and greatly improves the yield of the effective components; due to the small use of solvent, the amount of medicine solution to be concentrated is small, the extraction and concentration process is short, saving energy.
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