Vegetable oil compositions having an ethyl ester content of from 0 to 18 weight percent of the total weight of the oil composition, and uses thereof are provided.

A method for using a filtration system is provided. The filtration system can include a container, an inner cup, and a filter pad. The filtration system can be configured to remove undesirable impurities from liquid. For example, the filtration system can be configured to remove total polar molecules and lovibond color red from used cooking oil.

A method for treating edible cooking oil which significantly expands the life of the edible cooking oil used to deep fry, wherein a rested combination of diatomaceous earth and anhydrous magnesium silicate are used as a frying and filtering aid.

Provided herein are systems and methods for the facile extraction and purification of oils from plant material, including cannabis and hemp. The systems and methods herein are versatile, and may utilize a wide range of solvents to extract oils from a variety of plant-based material. Further, the provided systems and methods are closed loop, reducing the loss solvent and decreasing the risk of safety concerns such as human exposure to solvent chemicals or explosion of volatiles. In some embodiments, the systems and methods remove impurities from the extracted oils, for example waxes or other precipitates, and provide a higher purity and higher quality extract.

Membrane-based method of washing and deacidification of oils, wherein a stream of oil is conveyed from an oil reservoir along one side of porous hydrophobic membrane, and washing aqueous solution is conveyed along another side of this membrane. The membranes form hollow fibers, and their total surface area and porosity are large enough for efficient removal of fatty acids, water, ions and hydrophilic organic impurities from oil. Membrane pore size is small enough, so that hydrodynamic mixing of oil and aqueous solution does not take place. Additional stabilization of oil/water meniscus in the pores is achieved by transmembrane pressure difference.

Methods for producing oil from fats and oils having high free fatty acid content are provided. In the method, fats and oils are treated with a mixture including an alcohol to result in a low-free fatty acid oily phase and an alcohol phase. The mixture may also include an alkali. The alcohol may be a monohydric alcohol and an aqueous alcohol, such as an aqueous alcohol having a concentration of at least about 15% alcohol-by-weight. The low-free fatty acid phase may include oil and at least one impurity. The low-free fatty acid phase may be cooled, and the oil may be separated from the at least one impurity. Fats and oils amenable to such a method may include, but are not limited to, waste fats, waste oils, high acid grease, high acid tallow, sorghum wheat oil, and corn oil, such as corn oil produced at an ethanol production plant.

A filter aid composition may include an acid-treated composite silicate. The composite silicate comprises a silicate substrate and a precipitated silica. A method for making a filter aid composition may include providing a silicate substrate, precipitating a silica onto the silicate substrate to form a composite silicate, and treating the composite silicate with an acid to form an acid-treated composite silicate. A method for filtering a non-aqueous liquid may include providing a non-aqueous liquid for filtering and filtering the non-aqueous liquid through an acid-treated composite silicate. The composite silicate may include a silicate substrate and a precipitated silica. A filter aid may include an acid-treated composite diatomite. The acid-treated composite diatomite may include a diatomite substrate and a precipitated silica gel coating. The precipitated silica may be a precipitated ilica gel.

A metathesized natural oil composition comprising (i) a mixture olefins and/or esters, or (ii) a metathesized natural oil, is disclosed. The metathesized natural oil composition has a number average molecular weight in the range from about 100 g/mol to about 150,000 g/mol, a weight average molecular weight in the range from about 1,000 g/mol to about 100,000 g/mol, a z-average molecular weight in the range from about 5,000 g/mol to about 1,000,000 g/mol, and a polydispersity index of about 1 to about 20. The metathesized natural oil composition is metathesized at least once.

The present disclosure relates generally to a process for manufacturing products enriched in the content of at least one vitamin E component, preferably tocotrienol, using solvent extraction and membrane filtration.

The invention relates to a method for aggregating and separating an organic material mixture which is provided in a dissolved form in an aqueous emulsion. The method is characterized by the following steps: a) providing an aqueous emulsion with organic compounds which are provided in the emulsion in a dissolved form, said organic compounds being carboxylic acids, phospholipids, glycolipids, glyceroglycolipids, phenols, sterols, chlorophyll, and/or sinapines, b) mixing the emulsion from step a) with an aqueous solution containing copper(II) ions and/or calcium ions until an aggregate formation is achieved, and c) separating the aggregates from step b) by means of a sedimentation, filtration, or centrifugation process after achieving an aggregated phase of the organic compounds from step b).