Subcritical liquid extraction device and subcritical liquid extraction method of active ingredients of natural products

A subcritical fluid and active ingredient technology, applied in the direction of solid solvent extraction, etc., can solve the problems of being limited to a specific subcritical fluid, cumbersome loading and unloading of extraction kettles, and high working pressure of equipment, so as to reduce solvent loss and low operating costs , The effect of reducing the project cost

Inactive Publication Date: 2010-02-10
HENAN YALINJIE BIOLOGICAL TECH
5 Cites 108 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0007] In order to overcome the low degree of automation of the existing subcritical fluid extraction device, the cumbersome loading and unloading of the extraction kettle, and the high working pressure of the equipment; at the same time, the subcritical fluid extraction method is limited to a specific subcritical fluid, and the extraction of medium polar and polar compounds Low efficiency and other defects, the present invention makes full use of the characteristics of subcritical fluids ...
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Abstract

The invention provides a subcritical liquid extraction device and a subcritical liquid extraction method of active ingredients of natural products, relating to a device and a method for extracting active ingredients of natural products. The device comprises a control system part and a leaching system part, wherein the leaching system part comprises an extraction tank 1, an evaporating tank 2, a buffer tank 3, a condenser 4, a solvent tank 5, an ultrasound generating device 11, a vacuum pump 9, a fire arrester 10, a compressor 8, a hot water pump 7 and a hot water box 6; the control system partcomprises a leaching temperature controller, a leaching time controller, a leaching frequency controller, a material dissolving ratio controller, an exsolution temperature regulation controller, an exsolution pressure feedback controller, an electric appliance controller of the device and an excess-temperature excess-pressure leaking alarm. The method can select different subcritical extraction media according to different extraction products, combines a subcritical liquid extraction technology and an ultrasonic extraction technology to increase extraction rate and reduce extraction time andis a new high-efficiency low-consumption environment-friendly technology for extracting active ingredients of natural products.

Application Domain

Solid solvent extraction

Technology Topic

SolventPressure feedback +9

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  • Subcritical liquid extraction device and subcritical liquid extraction method of active ingredients of natural products

Examples

  • Experimental program(4)

Example Embodiment

[0045] Example 1 Subcritical liquefied petroleum gas extraction of natural thorn fruit oil
[0046] Take 2.5 kg of natural thorn fruit, the raw material contains 0.3% impurities after pretreatment, the thickness of the embryo slice is 0.35mm, the water content is 8.5%, and the temperature is 45°C. Then, subcritical liquefied petroleum gas is used as the lysozyme to extract the thorn fruit oil, the extraction temperature is 45℃, the extraction time is 45min, and the extraction times are 5 times. The mixed oil is vaporized under reduced pressure, and after reaching 0Mpa (gauge pressure), it is vacuumed and dissolved. When the gauge pressure is -0.09MPa, the temperature is kept at 45℃ for 30min. The wet embryos are vaporized under reduced pressure and compressed to recover the lysozyme. The measurement results of the main quality indicators of the green thorn fruit oil: the residual soluble in oil is 0.85ppm; the impurity content is 0.1%; the oil content in the meal is 2.0%; the residual soluble in meal is 222ppm.

Example Embodiment

[0047] Example 2 Ultrasonic assisted subcritical propane extraction of natural thorn fruit oil
[0048] Take 2.5 kg of natural thorn fruit, the raw material contains 0.3% impurities after pretreatment, the thickness of the embryo slice is 0.35mm, the water content is 8.5%, and the temperature is 45°C. Then subcritical propane was used as the lysozyme, and the ultrasonic-assisted extraction of thorn fruit oil was performed at an extraction temperature of 45°C, an extraction time of 30 minutes, an extraction frequency of 3 times, an ultrasonic power of 1500W, and an ultrasonic frequency of 20KHz. The mixed oil is vaporized under reduced pressure, and after reaching 0Mpa (gauge pressure), it is vacuumed and dissolved. When the gauge pressure is -0.09MPa, the temperature is kept at 45℃ for 30min. The wet embryos are vaporized under reduced pressure and compressed to recover the lysozyme. The results of the main indicators of the green thorn fruit oil are as follows: the residual solubility in the oil is 0.85 ppm; the impurity content is 0.1%; the oil content in the meal is 1.2%; the residual solubility in the meal is 195 ppm.

Example Embodiment

[0049] Example 3 Subcritical propane and butane extraction of wheat germ oil
[0050] Take 2.5 kg of wheat germ, and after pretreatment such as cleaning and microwave drying, the impurity content is 0.15% and the water content is 7.5%. Subcritical propane and butane are used for extraction according to a countercurrent three-leaching process. The first and second passes are respectively extracted with the second and third mixed oils of the previous tank leaching, and the immersion is 35 minutes each. The mixed oil leached in the first pass is delivered to the evaporation tank, and the rest is delivered to the buffer tank in the second pass. The leaching temperature is room temperature, the pressure is 0.4MPa, the material-to-solution ratio is 1:2.5, and the ratio of propane to butane is 3:1. When the mixed oil evaporates, the circulating hot water temperature is controlled below 50°C, and after reaching 0Mpa (gauge pressure), it is vacuumed and dissolved. When the gauge pressure is -0.09MPa, keep it at 45°C for 30min. The wet meal desolventizes and controls the heating temperature below 50°C, and the wheat germ protein obtained is a high-grade food additive. The main indicators of wheat germ oil were determined: residual soluble in oil was 0.75 ppm; impurity content was 0.2%; oil content in meal was 0.9%; meal soluble in meal was 402 ppm.
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