Abstract:
Tomato seeds are the major constituents of the waste processing industry in tomato fruits, they
represent 0,5% of the weight of the fruit and contain between 18 - 30% fat. The purpose of this
work is the caracterization and extraction tomato seed oil. Tomato seed utilised in this
experiment came from a pile waste in storage at the cannery Ammour - Mouzaia - Algeria.
After separation, screening and dry in air, tomato seeds are placed in a device Soxhelet
containing n-hexane as extraction solvent. The extraction yield was calculed, it is 209,88grams
of oils from 934,06grams seeds, or 22,47%. After, filtration efficiency is 21,47% representing
82% of fat tomato seeds. Physicochemicals properties of the oil quality were measured before
and after refining, it appears that refining reduces the acidity of 0,9 to 0, O6%, the chlorophyll
content of 15,46 to 0,0092% and causes the disappearance of phosphorus. The result of the
chromatographic analysis of the lipid fraction of tomato seed oil showed a chromatographic
profil composed of 07 fatty acids from 16 to 18 carbon atoms.The linoleic and oleic acids
predominates with 52 and 22% respectively, saturated faty acids are essentially represented by
palmitic acid (13,18%) and stearic acid (6,18%). Finaly, the induction time estimated by the
Rancimat test, characteristic of stability and resistance of oxidation 4,7 hours at 120'C,
corresponding durabiity of 223 days at 20'C. |
