oiloil

ComeniusComenius

italyitaly

Kind of oil:Kind of oil:

Olive oil, Olive oil, sunflowersunflower oil, palm oil. oil, palm oil. Most commonly used is the oil Most commonly used is the oil

extracted olives from.Olive’s oil , it’s extracted olives from.Olive’s oil , it’s coming pressing olive from.Pomace coming pressing olive from.Pomace oil , from pomace of olives by oil , from pomace of olives by treatment of chemical extraction, treatment of chemical extraction, and other physical processes.They and other physical processes.They have different characteristics. And have different characteristics. And physical-chemical properties.By physical-chemical properties.By analysis of purity and quality, it’s analysis of purity and quality, it’s possible to know thatpossible to know that

Criteria of quality:

Oil’s composition through gas-chromatography

Criteria of purity :

organoleptic characteristics( such as smell, color, look 1)acid composition:

quality criteria has been different parameter ACIDITY Show acidity of oil, best is from 0,1 to 0,2. if is more high oil is not good.

2)number of peroxide :

Into oil’s molecule there are links oxygen with double bonds who aren’t Stable, this is the reason because the oil can’t be to contact of air.Number of peroxide must be from 15 to 20.

CriteriaCriteria ofof puritypurity : :

3)wax:3)wax: Wax is into olives,it’ll has small amount in Wax is into olives,it’ll has small amount in

oil obtained pressin olives from.oil obtained pressin olives from.

4)spectrophometric u.v.:4)spectrophometric u.v.:This analisys show double and triple This analisys show double and triple

bonds. High value mens oil is old.bonds. High value mens oil is old.

5)purity criteria5)purity criteria: : sensory statement of value has based on sensory statement of value has based on

characteristic flavor.characteristic flavor.