RRenewable and Sustainable Energy Reviews4/20/2026Lipid feedstocks for sustainable aviation fuel (SAF) production via hydroprocessed esters and fatty acids (HEFA) pathway: Current status and challenges in quality, sustainability, availability and costMin Ying Liow·Eng‐Seng Chan·Cher Pin Song·Mun Yuen Chang·Siti Hanifah Adiiba·Chee Sheau Chien·Noorazlenawati Borhan·Azima Syafaini Japar·M. Syazwan M. Shukor·Tg M.Uzaini Tg Mat·M. Ghadaffi M. Nor·Wei Zhe NgRead at Renewable and Sustainable Energy ReviewsTagsBiodiesel Production and ApplicationsBiomedical Engineering