Practise 6: Oil extraction

This exercise is comparated with the process of an "olive oil mill" in the oil extraction, but in the laboratory.
1- Grind trituration:
We get 100 olives and we take off the bones. We mold the pulp of all the olives with a mixter (in the alamzara industrial the olives are grind with mills or metallic grinds).
2- Milkshake:
When we have the olives grind, it adds a bit of cold water. We remove slowly the paste with a little spoon, while we put it in slow fire for it can warm up, in this way the oil extraction will be more easy.
3- Pressed:
We put the strainer on a hasty cup, we add bit by bit the paste on the strainer to separate the liquid from the solid part. In the almazara industrial it separates the liquid from the solid part with a press system or by spining.
4- Pour off:
When the orujo liquid is separated inthe glass of hastys, we let it separate by pour off during a week in 3 different phases: the first is oil, the second is the alpechín and the third is the remaining orujo, all of them differenciated.
5- Oil separation:
With a pippet, we extract the oil carefuly and we pour it in a test tube.
6- Centrifugation:
Finally, we could centrifuge this oil to finish of separate it from other wastes and it seems clean.