Extraction combination of biologically active substances and ultrasonic microwave combined extraction method

Abstract

The invention discloses an extracting assembly for bioactive substances and an ultrasonic-microwave combined extracting method, and belongs to the bioactive substance extracting technology. The extracting assembly is formed by connecting two or three of an ultrasonic-microwave extracting unit, an ultrasonic extracting unit and a microwave extracting unit in series. The extracting assembly is high in integration degree, small in occupied space and capable of realizing ultrasonic-microwave modularization, the microwave head and the ultrasonic head are separated in space, so that mutual interferences between the ultrasonic and the microwaves are reduced, and work can be simultaneously or independently performed according to the material properties; on the condition that the quantity or power of the microwave heads is not increased, the complete processing of an extracting feed liquid by microwaves is achieved without a dead corner, so that a few materials can be processed, and a large number of materials can be processed; a microwave processing mode in the prior art is changed into a short-time mobile continuous processing mode, so that bioactive substances sensitive to heat can be effectively protected.

Description

technical field [0001] The invention belongs to the extraction technology of biological active substances. Background technique [0002] In the extraction of biologically active substances, a large number of studies have shown that ultrasonic extraction and microwave extraction have many advantages. [0003] Ultrasound has: ① mechanical effect. The mechanical action of ultrasound can facilitate the emulsification of liquids, the liquefaction of gels and the dispersion of solids. ② Cavitation. When ultrasonic waves act on liquids, a large number of small air bubbles can be generated. One reason is that there is a local tensile stress in the liquid to form a negative pressure, and the reduction of the pressure makes the gas originally dissolved in the liquid supersaturated, and escapes from the liquid to become small bubbles; the other reason is that the strong tensile stress "tears the liquid apart". " into a hole, called cavitation. Inside the cavity is a liquid vapor o...

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Problems solved by technology

[0011] Publication No. CN100479898C Chinese patent document discloses a three-frequency ultrasonic extraction device and its method of use. Ultrasonic probes of different frequencies are fixed in the hexahedral vibrator in the center of the extraction tank, so that although ultrasonic vibrations of different frequencies can be produced, different The frequency of ultrasonic vibration will also offset part of the ability of the ultrasonic vibration plate

In addition, the ultrasonic device is required to be immersed in the material liquid, such a fixed volume mode cannot handle small-volume tailings

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