Optimisation of Bioethanol Production from Oil Palm Trunk Sap Jolius Gimbun, Nor Shahirah Mohd Nasir, Sumaiya Zainal Abidin, Chin Kui Cheng and Maizirwan Mel E3S Web Conf., 422 (2023) 01004 Published online: 06 September 2023 DOI: 10.1051/e3sconf/202342201004