Processing of insect larvae
The present invention provides a method and system for processing insect larvae in an ethical manner and without imposing unnecessary stress on them. The method involves anaesthetising the insects by cooling and then cutting them, thereby destroying the nervous system of the insects. Thus, an energy-saving method of processing insects with minimal stress is provided.
1. A method of processing insect larvae comprising the steps of:
anaesthetising the insect larvae by cooling, wherein the insect larvae are stored in cold water before or after the anaesthetising step, followed by
cutting the insect larvae into pieces to effect destruction of a nervous system of the insect larvae while the insect larvae are anaesthetized.
2. The method according to claim 1 , wherein the insect larvae are cooled by mixing them with a fluid.
3. The method according to claim 2 , wherein a cooling temperature of the fluid is below 15° C.
4. The method according to claim 2 , wherein a cooling temperature of the fluid is below 7°.
5. The method according to claim 1 , wherein a cooling temperature of the insect larvae is below 15° C.
6. The method according to claim 1 , wherein a cooling temperature of the insect larvae is below 10° C.
7. The method according to claim 1 , wherein cutting the insect larvae into pieces comprises cutting at least 90% of the insect larvae into at least 5 pieces each.
8. The method according to claim 1 , wherein the insect larvae are processed to powder comprising protein and/or fat and/or chitin.
9. The method according to claim 1 , wherein the insect larvae are separated from rearing residue before the anaesthetising step.
10. The method according to claim 1 , wherein during storing, the insect larvae are agitated.
11. A system for processing insect larvae according to claim 1 comprising
means for cooling the insect larvae, and
means for cutting the insect larvae,
wherein the system is also configured to store and cool the insect larvae in cold water before processing.
12. The system according to claim 11 , wherein the cooling means are configured to maintain a temperature below 15° C.
13. The system according to claim 11 , wherein the insect larvae are separated from rearing residue by separating means.
14. The system according to claim 11 , wherein the cutting means are configured to cut the insect larvae in at least 5 pieces at once.
15. The system according to claim 11 , wherein the system is configured to agitate the insect larvae during storing.
16. The system according to claim 11 , wherein the cooling means are configured to maintain a temperature below 10° C.
17. The method according to claim 1 , wherein the insect larvae are cooled by mixing them with water.
18. The method according to claim 1 , wherein a cooling temperature of the insect larvae is below 7°.