| 摘要 |
A method for extracting oil from fish offal comprises the step of heating the offal to a temperature above +30 DEG C while the offal is kept in a liquid-permeable container from which oil extracted from the offal by heating is separated by dripping off, the rest of the offal remaining in the container. In an initial step and before heating to the above-mentioned temperature, the fish offal is deep-frozen, i.e. frozen to a temperature below -18 DEG C, whereupon it is thawed from the deep-frozen state. |
