Green extraction procedures of lipids from Tunisian date palm seeds

Results showed that Deglet Nour presents the highest lipids extraction yield (7.24-5.97%) using the both solvents. Hansen solubility simulation demonstrated that MeTHF is a good alternative solvent for lipid date seeds extraction. In addition, extraction of oils from date pits with ultrasound and micro-wave were better in terms of extraction time (30 min versus 8 h) comparing to soxhlet procedure and of extraction yield comparing to maceration (about 6% versus 4%). Triglycerides represent almost the whole recovered oils composition with 99% and the fatty acids were mainly oleic (44.02-46.9%), lauric (20.00-23.10%), myristic (8.88-11.26%), palmitic (9.00-10.73%) and linoleic (6.13-9.21%) acids.