Disclosed is a chromatographic process complex for the refining of krill oil extract including desalting, removal of impurities such as trimethylamine oxide (TMAO), and the production of krill oil products including desalted krill oil extract, polar lipid products having polar lipid contents greater than 50 wt-% on a dry or solvent free basis, neutral lipid streams for biodiesel production and astaxanthin. The refinery includes a continuous desalting zone, a fixed bed polar lipid extraction zone to adsorb neutral lipids and astaxanthin to provide a polar lipid extract stream comprising solvent and polar lipids and being essentially free of neutral lipids and astaxanthin, and an astaxanthin separation zone to recover essentially pure astaxanthin and provide a neutral lipid stream. The enriched products of the krill oil refinery are essentially free of TMAO and salt and provide products which can be used as dietary supplements and as medicinal additives.

This invention discloses new krill oil compositions characterized by having high amounts of phospholipids, astaxanthin esters and/or omega-3 contents. The krill oils are obtained from krill meal using supercritical fluid extraction in a two stage process. Stage 1 removes the neutral lipid by extracting with neat supercritical CO.sub.2 or CO.sub.2 plus approximately 5% of a co-solvent. Stage 2 extracts the actual krill oils by using supercritical CO.sub.2 in combination with approximately 20% ethanol. The krill oil materials obtained are compared with commercially available krill oil and found to be more bioeffective in a number of areas such as anti-inflammation, anti-oxidant effects, improving insulin resistances and improving blood lipid profile.

This invention discloses new krill oil compositions characterized by having high amounts of phospholipids, astaxanthin esters and/or omega-3 contents. The krill oils are obtained from krill meal using supercritical fluid extraction in a two stage process. Stage 1 removes the neutral lipid by extracting with neat supercritical CO.sub.2 or CO.sub.2 plus approximately 5% of a co-solvent. Stage 2 extracts the actual krill oils by using supercritical CO.sub.2 in combination with approximately 20% ethanol. The krill oil materials obtained are compared with commercially available krill oil and found to be more bioeffective in a number of areas such as anti-inflammation, anti-oxidant effects, improving insulin resistances and improving blood lipid profile.

Disclosed are methods of improving the sensory and oxidative stability of oils (e.g., plant and animal oils) by combining an oil and an antioxidant composition comprising green tea extract and deodorizing the oil. Oils prepared by these methods are also disclosed.

Disclosed are methods of improving the sensory and oxidative stability of oils (e.g., plant and animal oils) by combining an oil and an antioxidant composition comprising green tea extract and deodorizing the oil. Oils prepared by these methods are also disclosed.

The present invention broadly relates to a process for preparing fatty acid alkyl esters from fat-containing feedstocks using sulfonated fatty acid catalysts.

The present invention broadly relates to a process for preparing fatty acid alkyl esters from fat-containing feedstocks using sulfonated fatty acid catalysts.

A method is provided for processing an organic oil in steps, including the following: A) providing a raw oil; B) degumming the raw oil by adding water or acid to the raw oil and forming at least two phases, an aqueous phase and an oil phase, and separating the aqueous phase enriched in phospholipid from the oil phase; C) adding sodium hydrogencarbonate and/or sodium acetate to the oil phase from step B, and removing alkaline-earth compounds and/or phospholipids and/or stearyl glycosides, in solution or suspension in an aqueous phase, from the oil phase.

A method for reducing neutral oil losses during a neutralization step including (1) mixing an acid-treated vegetable oil with a base to neutralize (a) free fatty acid and (b) added acid in the acid-treated vegetable oil to obtain a pretreated mixture; (2) subjecting the pretreated mixture to at least two successive cycles of localized shear effects, each cycle including a step of forcing the pretreated mixture at a pressure through one or more nozzles, each cycle of localized shear effects having a shear duration time of less than 510.sup.5 seconds and a shear rate of at least about 6000 sec.sup.1.

Products produced from distillers corn oil include once refined corn oil product, food grade corn oil product, and free fatty acid product which may be used in a variety of applications. The products have varying specifications for free fatty acid content and moisture content. The applications include food, feed, additives, and manufacture of industrial products.