IP Library Granted Patent US 7,884,221
Granted Patent B2
US 7,884,221 · App. 10/532,682 · Granted Feb 8, 2011

Method of separating ergosterol

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Quick Facts
Patent No.
US 7,884,221
App. No.
10/532,682
Granted
Feb 8, 2011
Kind
B2
Abstract

The present invention provides a method of separating ergosterol from a solution containing ergosterol in water-insoluble organic solvent, comprising supplying water to the solution and precipitating ergosterol. According to the method of the present invention, ergosterol crystals can be obtained at a high yield. Moreover, controlled water supply provides granular ergosterol aggregates exhibiting good solid-liquid separation character at a high yield.

Claims (3)

1. A method of separating ergosterol from a solution containing ergosterol in hexane, which comprises:

supplying a trace amount of water to said solution and precipitating ergosterol from said solution containing ergosterol in hexane by cooling crystallization,

wherein the trace amount of water supplied is between 1 and 100 ppm with respect to the hexane, and no phase separation to form two liquid phases occurs between the hexane and water.

Assignments (2)
CHANGE OF ADDRESS Recorded Jan 15, 2014
From: KANEKA CORPORATION
To: KANEKA CORPORATION
Reel/Frame 032019/0901 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 26, 2005
From: KAWACHI, HIDEO
To: KANEKA CORPORATION
Reel/Frame 016933/0440 →