US 8,138,362 B2 · Method for extracting internal lipids from wool using supercritical fluids

Abstract

A method for extracting internal lipids from wool that is substantially free of lanolin, comprising the use of a fluid under supercritical conditions and an agent that can change the polarity of said fluid, selected from methanol and/or ethanol, is disclosed. According to the operating conditions described, the temperature is between 40° C. and 120° C., and the pressure is between 120 bars and 330 bars. The polarity-changing agent represents between 3% and 15% expressed as volume/volume. The inventive method can be used to obtain internal lipids from wool, one of the most significant components of which are ceramides, which can be used in compositions intended to protect human skin against environmental damage.

Claims20

Dependent claims

A process for obtaining internal wool lipids from substantially lanolin-free wool comprising extracting the lipids from the wool with a fluid in supercritical conditions and a polarity-modifying agent,

wherein the polarity-modifying agent is at least one of methanol and ethanol, and
wherein said extraction is carried out at a temperature between about 40° C. and about 120° C., at a pressure between about 120 bars and about 330 bars, and with a content in polarity-modifying agent between about 3% and about 15% relative to the supercritical fluid.

Dependencies are inferred from the claim text.

Method for extracting internal lipids from wool using supercritical fluids

Life of this patent

Method for extracting internal lipids from wool using supercritical fluids

Life of this patent

Abstract

Claims20