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Rotary evaporator has a key role in the pre-treatment purification of Chinese herbal medicine

Time:

2021-05-21

Source:

www.jinghuayiqi.com

Author:

京华仪器

The rotary evaporator is a device that uses a rotary evaporation bottle (flask). The evaporation area is placed in a water bath under reduced pressure while rotating and heating. The principle is: under vacuum conditions, constant temperature heating makes the rotating bottle rotate at a constant speed, and the material A large area film is formed on the bottle wall for evaporation. The dissolved coal vapor is cooled by the glass condenser and recovered in the collection bottle, which greatly improves the evaporation efficiency. It is especially selected for the concentration and purification of biological products that are easily decomposed and denatured at high temperatures. Rotary evaporators are widely used in scientific research and production processes in pharmaceutical, chemical, biological products and other industries. They are indispensable equipment in evaporation, concentration, crystallization, drying, separation, solvent recovery and other processes. Among them, the concentration of traditional Chinese medicine extract is a typical application of the rotary evaporator. The rotary evaporator uses a heating tank to heat and evaporate the solution, and removes part of the extractant through the condensed steam in the condenser tube, thereby increasing the solute concentration in the solution.

  During the pretreatment process of Chinese patent medicine preparations, Chinese patent medicines can be extracted with purified water or ethanol of a certain concentration. For the prepared licorice extract, rhubarb extract, angelica extract, etc., the solvent can be recovered with a rotary evaporator. The rotary evaporator works under vacuum conditions, the bath is heated at a constant temperature, and the evaporation bottle rotates at a constant speed. Dirt is not easily formed in the bottle, which affects the heat transfer effect. At the same time, the material forms a large-area film on the bottle wall, which greatly improves the evaporation efficiency of the solvent. , because the water temperature of the constant temperature bath is low, it will not cause decomposition and denaturation of the medicinal solution. Therefore, the rotary evaporator is especially suitable for concentrating and concentrating traditional Chinese medicine preparations that are easily decomposed and denatured at high temperatures. Especially in the fight against the epidemic, the combination of Chinese and Western medicine has achieved good results, and it has also greatly promoted pharmaceutical production and research and development.

The above is the relevant content   brought to you by Jinghua Instrument about the role of rotary evaporator in the pretreatment and purification of Chinese medicinal materials . If you have any questions, you can contact us at any time and we will serve you wholeheartedly. Phone: 400-088-3616