Methods and systems for producing improved hemp seed products, such as proteins and oils are provided.

The invention relates to a method for producing an oil rich fraction (OF) from primary feedstock (FS) that comprises water, first salt, second salt, and biomass. The feedstock (FS) is provided to a first reaction zone (Z1) of a conversion reactor (100), where it is allowed to react at a temperature of at least 350° C. in a pressure of at least 160 bar to form converted primary feedstock. The method comprises separating from the converted primary feedstock a first salt rich fraction (SF1), a second salt rich fraction (SF2), and an oil rich fraction (OF). The method comprises withdrawing the oil rich fraction (OF) from the first reaction zone (Z1) and withdrawing the first salt rich fraction (SF1) and the second salt rich fraction (SF2) from the conversion reactor (100). In the method the first salt rich fraction (SF1) comprises at least some of the first salt dissolved in the water, the second salt rich fraction (SF2) comprises at least some of the second salt in solid form, and at least one of the first salt and the second salt is a salt capable of catalysing the reaction of the biomass of the primary feedstock (FS) with the water of the primary feedstock (FS) to produce the oil rich fraction (OF). A device for the same.

The invention relates to a method of extracting oil from plant matter including treating a liquid or liquefied plant material to a high pressure extraction step by contacting the plant material with CO.sub.2 at a pressure between 100 and 3000 psig. And then separating the CO.sub.2 and the extracted oil to form an extracted plant meal. Preferably the extracted plant meal comprises less than 2 wt % of residual oil. The plant material preferably has not been previously extracted with a hydrocarbon solvent and is not heat treated during the extraction step.

A process that allows the extraction of compounds of nutraceutical interest (specifically omega-3 and carotenoids) from microalgae and their separation through the use of CO.sub.2 in supercritical conditions (and when necessary a co-solvent), at the same time, wherein the removal of an unwanted component (tripalmitin) from the lipid extract, always by using supercritical CO.sub.2 in a fractional extraction, is advantageously carried out using its different extraction kinetics respect to the component present in the lipid phase.

The invention relates to a method for obtaining protein preparations from sunflower and/or canola seeds. At least the following steps are carried out: dehulling sunflower or canola seeds up to a shell content of <5 mass.%; partially deoiling the hulled sunflower or canola seeds in a mechanical manner by means of pressing up to a fat or oil content ranging between >7 and >35 mass.%; and carrying out one or more extraction steps using at least one organic solvent or supercritical CO2.

At least one of the extraction steps produces a further deoiling of the sunflower or canola seeds and is carried out after a previous comminution process or during a simultaneous comminution process of the pressed cake to a particle size of <2 mm or a flake thickness of <2 mm as a percolation or immersion extraction. By means of one extraction step or a plurality of the extraction steps, a deoiled protein-containing meal or granulate with a good protein digestibility is obtained as a protein preparation after a desolventization process.

The disclosed embodiments include systems and methods for the solvent extraction of a substance from a material. The disclosed systems include multiple tanks and an extraction column in communication with the tanks.

Methods and systems for producing improved hemp seed products, such as proteins and oils are provided.

A plant oil extraction device includes one or modules for extraction of a product, e.g., oil, from a plant biomass. Various embodiments of the plant oil extraction device are described that include one or more features for producing a clean organic stream, free from waxes and terpenes, from biomass feedstocks such as industrial hemp. Related systems, methods, and articles of manufacture are also described.

A process and a device for obtaining oil from seeds, wherein at least one of the parameters of moisture, fiber content and oil content of the pressed material is continuously measured and evaluated, thus making it possible to continuously control at least one of the following variables: moisture of the pressed material, speed of the press drive and amount of an extraction agent supplied. The oil yield can be increased, the fluctuations in the oil yield can be reduced and energy can be saved by implementing the device-related and process-related features according to the invention.

A carbon dioxide extraction system which recirculates CO.sub.2 and/or other gases in a continuous loop for maximum extraction efficiency and which recovers substantially all gases at the end of the extraction cycle for cost savings and greater workplace safety. The extractor utilizes a dual pumping system which can incorporate high vapor pressure CO.sub.2 and/or lower vapor pressure gases such as propane, butane, chemical refrigerants such as R134a, and other lower vapor pressure gases. The system allows the operators to work with supercritical CO.sub.2 alone with high pressure liquid pump(s), lower vapor pressure gases alone with modified refrigerant recovery pump(s), or a mixture of CO.sub.2 and lower vapor pressure gases using a combination of high pressure liquid pump(s) for extraction and modified refrigerant recovery pump(s) for full recovery of gases at the end of an extraction cycle.