The knowledge of ultrasonic extraction equipment
Ultrasonic extraction equipment is an indispensable extraction container in the extraction of traditional Chinese medicine. It is suitable for the extraction of effective ingredients of traditional Chinese medicine. It is a new method and new process for traditional Chinese medicine pharmaceuticals to completely change the traditional water-boiled alcohol precipitation extraction method, and the use of this extraction equipment greatly It reduces the drawbacks of the previous traditional extraction, and makes the extraction work faster and purer.
It can be intensively extracted by ultrasonic wave at 40℃-50℃ water temperature F, boiled at high temperature without water, and will not destroy some of the medicinal ingredients of Chinese medicinal materials that are thermally unstable, easy to hydrolyze or oxidize. Ultrasound can promote the breaking of plant cells and improve the efficacy of traditional Chinese medicine. Ultra-acoustics is an important branch or part of acoustics. Its main content is to study the generation, transmission, reception and interaction of ultrasound in various substances, various effects and applications produced. Sound waves are mechanical waves, which are the propagation of mechanical vibrations in elastic media.
Working principle of ultrasonic extraction equipment
1. Accelerate the movement of medium particles. When an ultrasonic wave with a sound frequency higher than 20 KHz is propagated in water or medium, according to the Huygens wave principle, the medium particles including the important effective components of the medicinal material will move on the wavefront of the medium, causing the medium to move. The movement of the particle obtains huge acceleration and kinetic energy. The acceleration of the particle is generally calculated to be more than two thousand times the acceleration of gravity. Because the particles of the medium act on the particles of the medicinal ingredients in the medicinal materials with ultrasonic energy, they obtain huge acceleration and kinetic energy, and quickly escape the medicinal material matrix and free in the water.
2. Cavitation. The propagation of ultrasonic waves in the liquid medium produces a special "cavitation effect". The "cavitation effect" continuously generates countless microcavities with an internal pressure of thousands of atmospheres and continuously "blasts" to produce a powerful microscopic shock wave that acts on Chinese herbal medicines. , So that the medicinal ingredients are "bombarded" to escape, and the medicinal matrix is constantly eroded, and the medicinal ingredients that are not part of the plant structure are continuously separated. Speed up the leaching and extraction of plant active ingredients.
3. Homogenization of ultrasonic vibration. Make the action of each point in the sample medium consistent, and make the whole sample extraction more uniform. To sum up, under the action of ultrasonic field, the medicinal substances in Chinese medicinal materials not only obtain their own huge acceleration and kinetic energy as medium particles, but also obtain strong external force impact through the "cavitation effect", so they can be efficiently and fully separated .
