Method for separating the toxic resinous fraction from prepared whole jojoba seeds or jojoba seed press-cake

摘要

The resinous fraction comprising toxic p-coumaric acid derivatives is extracted from jojoba press-cake by means of an apolar mixture of solvents which mixture is a selective eluter for said p- coumaric acid derivatives. Particularly the extraction is performed with a mixture of acetone and hexane comprising up to 70 vol. % acetone or with a mixture of methyl ethyl ketone and hexane comprising up to 80 vol. % methyl ethyl ketone.