| 摘要 |
Fats are extracted from raw material of animal, vegetable or marine origin by treating the comminuted raw material in counterflow with a water-miscible organic solvent or solvent mixture having a boiling point below that of water and distilling the extract to recover the solvent, water being added to the material before or during its treatment in order that the extract separates into at least two liquid phases, one phase being substantially a mixture of solvent, water and flavour components and the other mainly fat. Suitable solvents are acetone, and a mixture of equal volumes of acetone, ethyl acetate and ethanol. The solvent is suitably used in amounts of 1 1/2 -2/ba1/2 times by weight of the raw material, and the raw material is preferably given a second comminution during the counterflow extraction.ALSO:Protein free from fats and flavouring material is obtained from raw material of animal, vegetable or marine origin by treating the comminuted raw material in counterflow with a water-miscible organic solvent or solvent mixture having a boiling-point below that of water and distilling the extract to recover the solvent, water being added to the material before or during its treatment in order that the extract separates into at least two liquid phases. Suitable solvents are acetone, and an equi-volume mixture mixture of acetone, ethyl acetate and ethanol. The solvent is suitably used in amounts of 1 1/2 -2/ba1/2 times by weight of the raw material, and the raw material is preferably given a second comminution during the counterflow extraction. Specifications 905,607, 960,369 and 1,009,339 are referred to. |
