摘要:
This invention refers to a process for extraction of active biological compounds from plants by simultaneous application of ultrasounds and microwaves in a laminar continuous flow regime of extraction, under conditions of a controlled flow regime, at temperatures which do not affect the structure of thermolabile active biological compounds and to a new type of chemical reactor for extraction of active biological compounds from plants, continuous, for carrying out this process. Also, the invention refers to an installation for continuous extraction of active biological compounds with the new type of chemical reactor for extraction. By the application of the process according to the invention there are obtained essential oils, fatty oils, blends of polyphenols, blends of anthocyanins, terpenes, sesquiterpenes compounds, stabilized proteins or in pure form which cannot be obtained by others techniques of extraction due to thermal degradation and/or structural degradation occurring during the process of extraction.
摘要:
The invention relates to a method of applying high-intensity ultrasound in order to accelerate and improve the efficiency of the mass transfer method in supercritical fluids. The inventive method comprises the contact separation of a substance containing components that can be extracted with a solvent under supercritical conditions or conditions close to the critical point. The invention also relates to a device which has been developed in order to carry out said method and which is based on the generation of an intense stationary ultrasonic field inside a standard pressurised container for supercritical fluids. The invention further relates to the use of the inventive method for the separation or extraction of natural products which can be used in, for example, the agri-food, chemical, cosmetic and pharmaceutical sectors.
摘要:
A method of extracting recovering oil from vegetable material in which oil bearing material is heated and subjected to sonication at least one frequency above 400 kHz, removing a first yield of oil by decanting and subjecting the retained material to centrifugal separation to separate out a second yield of oil. Preferably the raw vegetable material is passed through a screw press and the obtained material is heated and subjected to the ultrasonic treatment and then allowed to settle for a predetermined period before decanting the oil layer. Preferably two frequencies above 400 kHz are used, one below 1 MHz and the second from 1 MHz. There are many potential transducers arrangements possible for producing standing waves.
摘要:
The present invention relates to a system for cultivation of algae, extraction of lipids and transesterification of the lipids to obtain biodiesel. The system comprises three sections, that is to say cultivation, extraction and storage and reaction. In the lipid extraction area there is an ultrasonic reactor wherein the external walls of the alga are ruptured together with those of the oil sac to permit the extraction of lipids in the transesterification area there is also an ultrasonic reactor which ruptures the molecules of the fluid which passes therethrough to accelerate the reaction and render it almost immediate.
摘要:
Methods, systems, and apparatuses for extracting non-polar lipids from microalgae are achieved using a lipid extraction device having an anode and a cathode that forms a channel and defines a fluid flow path through which an aqueous slurry is passed. An electromotive force is applied across the channel at a gap distance in a range from 0.5 mm to 200mm to cause the non-polar lipids to be released from the algae cells. The non-polar lipids can be extracted at a high throughput rate and with low concentrations of polar lipids such as phospholipids and chlorophyll.
摘要:
The present invention relates to a system for cultivation of algae, extraction of lipids and transesterification of the lipids to obtain biodiesel. The system comprises three sections, that is to say cultivation, extraction and storage and reaction. In the lipid extraction area there is an ultrasonic reactor wherein the external walls of the alga are ruptured together with those of the oil sac to permit the extraction of lipids in the transesterification area there is also an ultrasonic reactor which ruptures the molecules of the fluid which passes therethrough to accelerate the reaction and render it almost immediate.
摘要:
The invention relates to a method of applying high-intensity ultrasound in order to accelerate and improve the efficiency of the mass transfer method in supercritical fluids. The inventive method comprises the contact separation of a substance containing components that can be extracted with a solvent under supercritical conditions or conditions close to the critical point. The invention also relates to a device which has been developed in order to carry out said method and which is based on the generation of an intense stationary ultrasonic field inside a standard pressurised container for supercritical fluids. The invention further relates to the use of the inventive method for the separation or extraction of natural products which can be used in, for example, the agri-food, chemical, cosmetic and pharmaceutical sectors.