C - Chemistry – Metallurgy – 07 – J
Patent
C - Chemistry, Metallurgy
07
J
260/61
C07J 9/00 (2006.01)
Patent
CA 1133467
ABSTRACT OF THE DISCLOSURE A process is provided herein for the isolation and recovery of .beta.-sitosterol substantially free of .alpha.-sitosterol from the unsaponifiables obtained from crude soap skimmings or from a crude sterol mixture contain- ing .beta.-sitosterol, .alpha.-sitosterol and campesterol. The starting material is treated with an inorganic or organic acid in an organic solvent, whereby .alpha.-sitosterol reacts with the acid giving rearrangement products. The solution is cooled and filtered or the solvent is distilled off, whereafter the obtained crude .beta.-sitosterol is recrystalliæed from an organic solvent, to yield the pure material. This provides a simple effective process for the production of .beta.-sitosterol substantially free of .alpha.-sitosterol on a commercial scale.
341562
Koskenniska Lasse A.
Puhakka Maire M.
Farmos - Yhtyma Oy
Marcus & Associates
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