Ultrasonic field and rectangular pulsed electric field parallel coupling extraction method and device

Abstract

The invention discloses an ultrasonic field and rectangular pulsed electric field parallel-coupling and extracting method and device. According to the method, parallel coupling between an ultrasonic field and a rectangular pulsed electric field is adopted for extracting effective components of natural products. The device comprises an ultrasonic extracting groove, a rectangular pulsed electric field generator, a central electrode and a constant-temperature water device. The extracting groove is a hexagonal column body groove. An ultrasonic energy converter is installed on each side face. A flat-base boiling tube is adopted as an extracting container, and extracted materials and solvent are contained in the extracting container. The central electrode is sleeved with a silica gel insulating sleeve and fixed to the center of the flat-base boiling tube through a rubber plug, and then the flat-base boiling tube is fixed to the center in the extracting groove through an iron stand table. A voltage output electrode of a rectangular pulse electric field generator is electrically connected with the central electrode. The grounding end of the rectangular pulse electric field generator is electrically connected with the side wall of the extracting groove. The constant-temperature water tank and the extracting groove are connected to form circulation. By means of the method and the device, polarity components and non-polarity components can be extracted, the extracting yield is high, the extracting time is short, and the extracting temperature is low.

Description

technical field [0001] The invention relates to the technical field of extracting effective components of natural products, in particular to a parallel coupling extraction method and device of an ultrasonic field and a rectangular pulsed electric field. Background technique [0002] The traditional methods for extracting effective components of natural products mainly include: water decoction, solvent extraction, and steam distillation, etc., which have the advantages of simple process and easy operation, but there are disadvantages such as long extraction time, low extraction yield, and high energy consumption. question. When ultrasound propagates in the medium, it will produce a series of effects such as mechanical, thermal and cavitation, which can destroy the cell wall tissue of natural products, increase the penetration of cells, and promote the target substance to flow out of the cell quickly and fully. It plays an important role in the extraction process of natural pr...

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Problems solved by technology

The combination of ultrasonic field and high-voltage pulsed electric field will not deform the cavitation bubbles, but will only cause some cavitation bubbles to collapse prematurely. Moreover, the pulsed electric field belongs to alternating current, so the shell cannot be grounded, and there is a risk of electric shock

[0004] The existing patent No. "200910214229.4" discloses a device for extracting effective plant components by ultrasonic and electrostatic fields, but the device disclosed in this patent uses orthogonal coupling, so it cannot fully reflect the advantages of ultrasonic and electrostatic field extraction. According to foreign Scholars have conducted studies on the influence of DC electric fields on the amplitude of ultrasonic signals, showing that: ultrasonic-electrostatic field orthogonal coupling is not as effective as parallel coupling

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