| 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 aceton and hexane comprising up to 70 vol.% aceton or with a mixture of methyl ethyl ketone and hexane comprising up to 80 vol.% methyl ethyl ketone. |
