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Updated: Aug 9, 2026

Ultrasonic-Assisted Preparation of Biodiesel Products from Vegetable Oils
Published on: April 19, 2024
Lipase-mediated transformation of vegetable oils into biodiesel using propan-2-ol as acyl acceptor
Mukesh Kumar Modi1, J R C Reddy, B V S K Rao
1Division of Lipid Science and Technology, Indian Institute of Chemical Technology, Hyderabad, India.
Abstract:
Propan-2-ol was used as an acyl acceptor for immobilized lipase-catalyzed preparation of biodiesel. The optimum conditions for transesterification of crude jatropha (Jatropha curcas), karanj (Pongamia pinnata) and sunflower (Helianthus annuus) oils were 10% Novozym-435 (immobilized Candida antarctica lipase B) based on oil weight, alcohol to oil molar ratio of 4:1 at 50 degrees C for 8 h. The maximum conversions achieved using propan-2-ol were 92.8, 91.7 and 93.4% from crude jatropha, karanj and sunflower oils, respectively. Reusability of the lipase was maintained over 12 repeated cycles with propan-2-ol while it reached to zero by 7(th) cycle when methanol was used as an acyl acceptor, under standard reaction conditions.
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