The principle of ultrasonic extraction, the advantages of ultrasonic extraction

The principle is mainly to use the cavitation effect of ultrasonic waves in the liquid to accelerate the leaching and extraction of plant active ingredients. In addition, secondary effects such as mechanical vibration, diffusion, crushing, etc., are used to accelerate the diffusion and release of the extracted ingredients.

The superiority of ultrasonic extraction of Chinese herbal medicines is based on the special physical properties of ultrasound. The solid-liquid extraction separation is mainly achieved by reducing the force between the target extract and the sample matrix through the rapid mechanical vibration waves generated by the piezoelectric transducer.

Merit. 1. High extraction efficiency: the unique physical characteristics of ultrasonic promote the wall or deformation of plant cell tissues, so that the extraction of active ingredients of traditional Chinese medicine is more sufficient, and the extraction rate is significantly increased by 50-500% compared with traditional processes;

2. Short extraction time: ultrasonic-enhanced traditional Chinese medicine extraction usually achieves the best extraction rate in 24-40 minutes, and the extraction time is greatly shortened by more than 2 3 compared with traditional methods, and the processing capacity of medicinal raw materials is large;

3. Low extraction temperature: the best temperature for ultrasonic extraction of Chinese herbal medicines is 40-60, which has a protective effect on the active ingredients in the medicinal materials that are unstable in case of heat and easy to hydrolyze or oxidize, and greatly saves energy consumption;

The above content refers to: Encyclopedia - Ultrasonic Extraction.

High extraction efficiency: the unique physical properties of ultrasonic promote the breaking or deformation of plant cell tissues, so that the extraction of active ingredients of traditional Chinese medicine is more sufficient, and the extraction rate is significantly increased by 50-500% compared with traditional processes;

Short extraction time: ultrasonic-enhanced extraction of traditional Chinese medicine usually achieves the best extraction rate in 24-40 minutes, and the extraction time is greatly shortened by more than 2 3 compared with traditional methods, and the processing capacity of medicinal raw materials is large;

Low extraction temperature: The optimal temperature for ultrasonic extraction of Chinese herbal medicines is 40-60, which has a protective effect on the active ingredients in the medicinal materials that are unstable when heated, easy to hydrolyze or oxidize, and greatly saves energy consumption.

Wide adaptability: ultrasonic extraction of Chinese herbal medicines is not limited by the polarity and molecular weight of the components, and is suitable for the extraction of most types of Chinese herbal medicines and various components;

The extracted liquid has few impurities, and the active ingredients are easy to separate and purify;

The operating cost of the extraction process is low, and the comprehensive economic benefits are significant;

The operation is simple and easy, and the equipment maintenance and maintenance are convenient.

Ultrasonic extraction use

1. It can be used for biological and plant cell fragmentation;

2. It can be used for the extraction of active ingredients of organisms and plants;

3. It can be used for low-temperature extraction of effective ingredients of Chinese herbal medicine;

4. It can be used for BCR element form extraction;

5. The low-energy state can activate bacteria;

6. The high-energy state can kill live bacteria;

7. It can be used for DNA extraction and DNA shearing;

8. It can be used for gene introduction;

9. It can be used for the aging treatment of raw liquor;

10. It can be used to break the dormancy state of plant seeds to improve the germination rate and early maturity period;

11. It can be used for the polymerization of two different quality solutions.

Hello dear, what problems and solutions will occur in the ultrasonic extraction method:1The inlet temperature of the cooling water is in line with the blue, but the amount of the sail is insufficient.

2.In the case of using tap water or reservoirs, although the inlet pump of the ultrasonic extraction equipment is operating normally, it is due to the sudden drop in the pressure of the tap water itself, or the drop in the liquid level of the reservoir. 3.

There are foreign objects in the inlet pump and pipes of the cooling water or the inlet is blocked. 4.The inlet temperature of the cooling water is too high The inlet temperature of the cooling water is one of the main parameters that must be strictly controlled and regulated during operation, in the concentration equipment that uses hydro ejectors.

5.Leakage of components Air infiltration due to the leakage of a component in the ultrasonic extraction equipment causes a decrease in the vacuum level, such as the head and manhole. I hope it can help you, and I wish you a smooth work and a happy life

Accurately weigh 10g of soil samples and place them in 30ml glass bottles, add about 2 times the volume of extraction agent, ultrasonic extraction for a certain time, centrifugal separation of the extract, repeat twice, and then extract the sample with 1 times the volume of the extraction solution for 1 time, separate the extract, merge and purify the extract. The extraction solvent is acetone n-hexane = 1 1.

Transfer the extraction solution to a concentrator to concentrate to a volume of 1 ml. The results of the contaminant content in 10g soil samples were detected by GC MS, and the results are shown in the table, and the figure can show the measurement results more intuitively.

Table 10g ultrasonic extraction results of soil samples (unit: ng).

Continued. Figure Comparison of ultrasonic extraction effects.

As can be seen from the figure, the overall extraction effect is better for ultrasonic extraction for 20min (3 extractions). However, for the latter few compounds with larger molecular weights, with the extension of extraction time, the ** rate increased slightly.

The results show that in a certain extraction time, the extraction efficiency is improved with the increase of the oscillation extraction time (5 25min), and the extraction effect is better when the ultrasonic time is 20min, but when the ultrasonic time is too long, the ** rate of some substances will be reduced, which may be due to the extension of ultrasonic (oscillation) time, the soil particles are broken into smaller particles (particle size becomes smaller), the specific surface area and surface energy of soil particles can increase rapidly, and the reaction develops in the direction conducive to the adsorption process, so some components** The rate has decreased. Therefore, the time taken for ultrasonic extraction will have a certain impact on the ** rate of pollutants, and the extraction time should be controlled within a certain range.

Ultrasonic extraction is to use the mechanical, cavitation and thermal effects of ultrasonic waves to extract bioactive ingredients by increasing the movement speed of medium molecules and increasing the penetration of medium. Like other physical waves, the propagation process of ultrasonic waves in the medium is also a process of energy propagation and diffusion, that is, in the propagation process of ultrasonic waves in the medium, its sound energy is continuously absorbed by the particles of the medium, and the medium converts all or most of the absorbed energy into heat energy, which leads to the increase of the temperature of the medium itself and the tissue of the medicinal materials, and increases the dissolution rate of the active ingredients of the drug. Since the increase in the internal temperature of the drug tissue, caused by this absorption of sound energy, is instantaneous, it is possible to keep the biological activity of the extracted component intact.

Ultrasonic extraction (also known as ultrasonic extraction) is a modern high-tech means to replace the traditional shearing process method to achieve efficient, energy-saving and environmentally friendly extraction by innovative people who have the unique advantages of low extraction temperature, high extraction rate and short extraction time.

Ultrasonic extraction has two meanings: the application of ultrasound technology and the extraction of chemical components in drugs. It is a new extraction technology that uses the cavitation and other special effects generated by ultrasound to quickly and efficiently extract the chemical components contained in drugs.

Simple method and mechanism description of ultrasonic extraction of traditional Chinese medicine and natural medicine: add the extraction solvent (water, ethanol or other organic solvents, etc.) to the container, crush or cut the Chinese herbal medicine into granules as needed, and put it into the extraction solvent; The outer wall of the container is bonded with the transducer oscillator or the oscillator is sealed in a stainless steel box and put into the container; On the one hand, the 'cavitation effect' and mechanical action produced by ultrasonic waves in the extraction solvent can effectively break the cell wall of the medicinal materials, so that the active ingredients are in a free state and dissolved into the extraction solvent, and on the other hand, the molecular movement of the extraction solvent can be accelerated, so that the extracted solvent and the active ingredients in the medicinal materials can quickly contact, melt and mix with each other.

Ultrasonic extraction (also known as extraction) is a modern high-tech means to replace the traditional shearing process method to achieve efficient, energy-saving and environmentally friendly extraction by innovative people who have the unique advantages of low extraction temperature, high extraction rate and short extraction time.