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    • 2. 发明公开
    • A process of extraction and purification of polyunsaturated fatty acids from natural sources
    • Verfahren zur Extraktion und Reinigung vonpolyungesättigtenFettsäurenaus Naturquellen。
    • EP0347509A1
    • 1989-12-27
    • EP88401555.3
    • 1988-06-21
    • CENTURY LABORATORIES INC.
    • Rubin DavidRubin Elyiahu J
    • C07C57/03C07C51/42C11C1/00
    • C09F5/02C09F5/10
    • To extract and purify polyunsaturated fatty acids, particularly EPA and DHA, without cis-trans conversion, from naturally occurring oils, such as marine animal oil and various vegetable oils, a mixture of free fatty acids is first extracted from the oil. The resulting mixture of pure fatty acids is then sub­jected to separation by means of urea complexing to remove saturated fatty acids and most mono-unsaturated fatty acids. Remaining solvent and urea are then re­moved from the filtrate which is then subjected to low temperature fractional crystallization in the presence of an organic solvent such as acetone. Substantially pure polyunsaturated fatty acids, especially EPA and DHA, can be separately precipitated by reducing the temperature of the filtrate in two steps. Alternative­ly, the volume of the filtrate is is reduced in two steps and cooled to form precipitates, which are re­moved. The final product is a mixture of substantially pure DHA and EPA.
    • 从天然存在的油(例如海洋动物油和各种植物油)提取和纯化多不饱和脂肪酸,特别是EPA和DHA,无顺反式转化,首先从油中提取游离脂肪酸的混合物。 然后将所得的纯脂肪酸混合物通过尿素络合进行分离以除去饱和脂肪酸和大多数单不饱和脂肪酸。 然后从滤液中除去剩余溶剂和尿素,然后在有机溶剂如丙酮存在下进行低温分级结晶。 基本上纯的多不饱和脂肪酸,特别是EPA和DHA,可以通过两步降低滤液的温度来分别沉淀。 或者,将滤液的体积分两步进行还原,并冷却以形成析出物,将其除去。 最终产品是基本上纯的DHA和EPA的混合物。
    • 4. 发明授权
    • Method of extraction and purification of polyunsaturated fatty acids
from natural sources
    • 从天然来源提取和纯化多不饱和脂肪酸的方法
    • US4792418A
    • 1988-12-20
    • US810550
    • 1985-12-19
    • David RubinElyiahu J. Rubin
    • David RubinElyiahu J. Rubin
    • C09F5/02C09F5/10C09F5/00
    • C09F5/10C09F5/02
    • To extract and purify of polyunsaturated fatty acids, particularly EPA and DHA, without cis-trans conversion, from naturally occurring oils, such as marine animal oil and various vegetable oils a mixture of free fatty acids is first extracted from the oil. The resulting mixture of pure fatty acids is then subjected to separation by means of urea complexing to remove saturated fatty acids and most mono-unsaturated fatty acids. Remaining solvent and urea are then removed from the filtrate which is then subjected to low temperature fractional crystallization in the presence of an organic solvent such as acetone. Substantially pure polyunsaturated fatty acids, especially EPA and DHA, can be separately precipitated by reducing the temperature of the filtrate in two steps. Alternatively, the volume of the filtrate is reduced in two steps and cooled to form precipitates, which are removed. The final product is a mixture of substantially pure DHA and EPA.
    • 从天然存在的油(例如海洋动物油和各种植物油)中提取和纯化多不饱和脂肪酸,特别是EPA和DHA,不经顺反式转化,首先从油中提取游离脂肪酸的混合物。 然后将所得的纯脂肪酸混合物通过尿素络合进行分离,以除去饱和脂肪酸和大多数单不饱和脂肪酸。 然后从滤液中除去剩余的溶剂和尿素,然后在有机溶剂如丙酮存在下进行低温分级结晶。 基本上纯的多不饱和脂肪酸,特别是EPA和DHA,可以通过两步降低滤液的温度来分别沉淀。 或者,将滤液的体积分两步降低,并冷却形成析出物,将其除去。 最终产品是基本上纯的DHA和EPA的混合物。