Abstract
Neem (Azadirachta indica A. Juss.) oil has been widely used in pharmaceuticals and cosmetics. The oil was extracted by the hydraulic press at the pilot scale. The effect of various critical factors such as the morphology of material, moisture of the neem seed, applied pressure, a number of presses turn, pressing time on the oil yield was considered. It was found that the oil yield increased with increasing applied pressure and pressing time. The moisture content of the neem seed kernel has a great influence on the oil yield, the higher the moisture content, the harder it is to recover the oil. The highest oil yield of 378mL/kg dry seed kernel was obtained at 190 MPa, 4% moisture content for 10 minutes of pressing per turn, and 3 turns of pressing. The main ingredients in neem kernel oil were oleic acid (45.9%), stearic acid (18%), palmitic acid (16.9%), and linoleic acid (15.65%). The results obtained can be used in the production of Neem oil at an industrial scale.
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