Extracted oil from each source was analyzed considering: (i)
acid value and free fatty acid content (using volumetric titration
method according to EN ISO 660), (ii) viscosity at 40
C (employing
Cannon-Fenske viscometers according to ASTM D445) and (iii)
density (Anton Paar DMA 38 density meter, calibrated and performed according to ASTM D4052)