What Are The Advantages Of Ultrasonic Extraction Of Traditional Chinese Medicine?

The characteristics of ultrasonic extraction device are suitable for the extraction of effective components of traditional Chinese medicine. It is a new method and process for traditional Chinese medicine pharmacy to completely change the traditional water boiling and alcohol precipitation extraction method. Compared with water boiling and alcohol precipitation process, ultrasonic extraction equipment has the following outstanding characteristics:

(1) High temperature is not required. Ultrasonic enhanced extraction at 40 ℃ - 50 ℃ water temperature F, no water boiling, high temperature, and no damage to some pharmacodynamic components in traditional Chinese medicine that are thermally unstable, easy to hydrolyze or oxidize. Ultrasound can promote the wall breaking of plant cells and improve the curative effect of traditional Chinese medicine.

(2) Atmospheric pressure extraction has the advantages of good safety, simple operation and convenient maintenance. Online communication

(3) High extraction efficiency. The best extraction rate can be obtained by ultrasonic enhanced extraction for 20 ~ 40 minutes, and the extraction time is only one third or less of that of water boiling and alcohol precipitation. The extraction is sufficient and the extraction amount is more than twice that of the traditional method. According to statistics, the working efficiency of ultrasonic is very high at 65 ~ 70 ° C. The effective components of Chinese herbal medicine plants are basically not damaged when the temperature is 65 ° C. After adding ultrasonic (at 65 degrees), the extraction time of plant effective components is about 40 minutes. The cooking time of cooking method often takes two to three hours, which is more than three times that of ultrasonic extraction machine.

(4) It has broad spectrum. Wide applicability, the vast majority of various components of traditional Chinese medicine can be extracted by ultrasonic.

(5) Ultrasonic extraction has little effect on the properties of solvent and target extract (such as polarity). Therefore, there are many kinds of extraction solvents to choose from and a wide range of target extracts.

(6) Reduce energy consumption. Because ultrasonic extraction device does not need heating or the heating temperature is low and the extraction time is short, the energy consumption is greatly reduced.

(7) The processing capacity of medicinal materials is large, which is doubled or multiplied, and there are few impurities. The effective components are easy to separate and purify. (

8) The extraction process has low cost and significant comprehensive economic benefits. Ultrasonic wave refers to the mechanical wave with a frequency of about 20 kHz ~ 50 MHz, which needs an energy carrier medium for propagation. In the process of ultrasonic transmission, there is an alternating period of positive and negative pressure. In the positive phase, it squeezes the medium molecules and increases the original density of the medium; In negative phase, the medium molecules are sparse and discrete, and the medium density decreases. In other words, ultrasound can not polarize the molecules in the sample, but produce acoustic cavitation between the solvent and the sample, resulting in the formation, growth, explosion and compression of bubbles in the solution, so as to disperse the solid sample, increase the contact area between the sample and the extraction solvent, and improve the mass transfer rate of the target from solid phase to liquid phase. In industrial applications, ultrasonic cleaning, drying, sterilization, atomization and nondestructive testing are very mature and widely used technologies.