Daryono, E. D., Widi, I. K. A., & Purnomo, Y. (2025). The effective process of waste cooking oil biodiesel production by interesterification with reaction using curcumin biocatalyst. Eastern-European Journal of Enterprise Technologies, 4(6 (136), 14–22. https://doi.org/10.15587/1729-4061.2025.333086