Immobilized enzymatic biocatalyst for biodiesel production that converts any vegetable oil, used or crude oil, or animal fat across FFA levels (1–99%) with >99.5% conversion and 99.5% yield. Targets biodiesel producers and plants with an energy‑efficient, lower‑cost, greener alternative to conventional chemical catalysts compatible with greases, palm/rapeseed, jatropha and other feedstocks.