Some variations provide a system for extracting a product from biomass, comprising: a process chamber having an internal volume; one or more mechanical elements configured to controllably and reversibly mechanically seal the process chamber and reduce the internal volume to mechanically compress the biomass; a fluid port in flow communication with the process chamber; and a collection sub-system in flow communication with the fluid port. Other variations provide a method of extracting a product from biomass, the method comprising: introducing biomass into a process chamber; mechanically sealing the process chamber; mechanically compressing the biomass to release a first fluid material; mechanically decompressing the biomass; introducing an extraction solvent into the process chamber; maintaining process-chamber pressure from about 1 bar to about 1000 bar, wherein the extraction solvent extracts a second fluid material; and recovering the second fluid material from the process chamber. High processing throughput is enabled with this invention.

Some variations provide a system for extracting a product from biomass, comprising: a process chamber having an internal volume; one or more mechanical elements configured to controllably and reversibly mechanically seal the process chamber and reduce the internal volume to mechanically compress the biomass; a fluid port in flow communication with the process chamber; and a collection sub-system in flow communication with the fluid port. Other variations provide a method of extracting a product from biomass, the method comprising: introducing biomass into a process chamber; mechanically sealing the process chamber; mechanically compressing the biomass to release a first fluid material; mechanically decompressing the biomass; introducing an extraction solvent into the process chamber; maintaining process-chamber pressure from about 1 bar to about 1000 bar, wherein the extraction solvent extracts a second fluid material; and recovering the second fluid material from the process chamber. High processing throughput is enabled with this invention.

The present invention describes a method for extraction of a raw material or a combination of raw materials to produce a formulation (NEAT™) rich in phytochemicals and which is based on or rich in oil and proteins, said method comprising—bringing the raw material or combination of raw materials into contact with a solvent being carbon dioxide and which optionally is assisted with one or more co-solvents being GRAS (generally recognized as safe), such as but not limited to water, ethanol, dimethyl carbonate; —performing an extraction in high pressure conditions ranging from subcritical to super critical conditions in carbon dioxide in a pressure range of 250-800 bars and in a temperature range of 15-45° C. to provide a formulation being rich in phytochemicals, e.g. lipids, phenolics, terpenoids and alkaloids and proteins wherein a residue obtained in the method for extraction is subjected to extraction in carbon dioxide at supercritical conditions in a pressure above 72 bars and 31° C., and wherein pressurized hot water is used as a co-solvent or after the extraction with carbon dioxide.

Disclosed is an ultrasonic composite acidic water extraction method for a Cordyceps polysaccharide and cordycepin in Cordyceps militaris, which falls within the technical field of food processing. The method comprises: picking, washing, drying, pulverizing and degreasing Cordyceps militaris fruiting bodies to obtain a Cordyceps militaris dry powder; then immersing same in a prepared diluted hydrochloric acid solution to perform three cycles of ultra-low temperature freezing and microwave defrosting, and at the same time using low-frequency ultrasonic waves to carry out assisted stirring and extraction; then subjecting an extract to evaporation and concentration treatments; and finally, performing freeze-drying on the extract to collect a dry powder of a water extraction product. The amount of an additive used in the method meets domestic and foreign usage requirements of food additives, and the operation is simple, practical and uses a combination of chemical and physical methods, thereby saving time and being highly efficient.

The present disclosure broadly relates to a process for recovering gold and/or silver values from various feedstocks. More specifically, but not exclusively, the present disclosure relates to a process for the selective recovery of gold and/or silver values from a feedstock, the process comprising: leaching the feedstock in a sulfuric acid solution comprising thiourea while simultaneously sonicating the sulfuric acid solution thereby producing a pregnant solution; and selectively removing gold and/or silver compounds from the pregnant solution using a solvent extraction process or an ion exchange extraction process.

A process for the mobilization and extraction of organic matter such as kerogen from solids such as oil shale using ionic liquid. An ionic liquid is a salt in the liquid state which has a melting point below 200° C. The process may be carried out in a subsurface reservoir or at the surface.

The present disclosure relates, according to disclosed embodiments, to a system for extracting an organic compound from a natural source, the system comprising a computer processor operational to control the system; a storage vessel configured to store an extraction gas, the storage vessel comprising a storage vessel outlet in electrical communication with the computer processor; a valve in electrical communication with the computer processor, the valve comprising a valve inlet and a valve outlet, wherein the valve inlet connects to the storage vessel outlet; a dynamic extraction vessel; and a spray evaporation loop system configured to receive a solute from the dynamic extraction vessel, the spray evaporation loop system comprising an injection nozzle in electrical communication with the computer processor, the injection nozzle comprising an injection nozzle inlet connected to the first dynamic extraction vessel outlet; and a cyclonic separator in electrical communication with the computer processor.

An extraction method for nonpolar natural substances includes: a step of conducting extraction of natural raw materials to prepare a first liquid extract; a step of mixing the first liquid extract with a phase separation composition containing a lipophilic solubilizer and water, and conducting a second extraction; and a step of isolating the supernatant of the phase-separated solution to obtain non-polar natural substances.

A semi-aqueous method for extracting a substance. The method involves combining a first liquid or solid substance containing an extract with a semi-aqueous solution containing a water-soluble or water-emulsifiable (WSWE) compound. Said WSWE compound selectively dissolves extract during a dense phase CO.sub.2 expansion and salting-out process, which is simultaneously co-extracted using said dense phase CO.sub.2, and desolvated to produce a CO.sub.2 salted-out solvent mixture containing extract. Said CO.sub.2 salted-out solvent mixture is treated using various secondary processes. The present invention is useful for producing extracts for use as additives in pharmaceuticals, nutraceuticals, cosmetics, beverages, or foods, and for quantitative analysis.

Methods of isolating phenols from phenol-containing media. The methods include combining a phospholipid-containing composition with the phenol-containing medium to generate a combined medium, incubating the combined medium to precipitate phenols in the combined medium and thereby form a phenol precipitate phase and a phenol-depleted phase, and separating the phenol precipitate phase and the phenol-depleted phase. The methods can further include extracting phenols from the separated phenol precipitate phase. The extracting can include mixing the separated phenol precipitate phase with an extraction solvent to solubilize in the extraction solvent at least a portion of the phenols originally present in the phenol precipitate phase.