Enzymatic Biodiesel Production from Renewable Feedstocks

Enzymatic biodiesel production employs lipase catalysts to transesterify lipid feedstocks into fatty acid esters under mild conditions. By replacing traditional alkaline catalysts, enzymatic processes reduce energy inputs and eliminate soap formation, enabling direct utilisation of high‐free‐fatty‐acid oils from non-edible or waste sources. Feedstocks range from refined vegetable oils to low-cost residues such as waste cooking oil, animal fats, microbial lipids cultivated from lignocellulosic hydrolysates, and algal biomass. The process benefits from enzyme selectivity, enabling high-purity biodiesel output with minimal downstream purification. Immobilisation techniques—including adsorption onto mesoporous silica or binding to magnetic nanoparticles—enhance enzyme stability, allow continuous operation and facilitate catalyst recovery. Integration of immobilised biocatalysts into continuous flow and centrifugal contactor systems has demonstrated steady-state yields and negligible deactivation over extended runs. Cross-disciplinary research combining materials science, protein engineering and process intensification is overcoming limitations in enzyme loading, mass transfer and solvent compatibility. As the quest for carbon neutrality intensifies, enzymatic routes offer a flexible and scalable pathway for decarbonising transport fuels and valorising regional waste streams, aligning with global sustainability targets.

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Enzymatic Biodiesel Production from Renewable Feedstocks publication trend

The graph below shows the total number of articles in enzymatic biodiesel production from renewable feedstocks across all publications each year (not limited to Nature Index journals).

Technical terms

Lipase: A hydrolase enzyme that catalyses the cleavage and formation of ester bonds in lipid substrates, facilitating transesterification.

Transesterification: A chemical reaction in which the alkoxy group of an ester is exchanged with an alcohol, producing biodiesel and glycerol.

Immobilisation: The process of confining enzymes or cells onto or within solid supports to enhance stability, reusability and ease of separation.

Biocatalyst: A biological molecule, such as an enzyme or whole cell, that accelerates chemical reactions under mild conditions.

Feedstock: Raw biological material, including vegetable oils, waste lipids or microbial oils, used as a source of fatty acids for biodiesel production.

Fatty Acid Methyl Ester (FAME): Methyl esters of fatty acids formed during transesterification, constituting the main components of biodiesel.

References

1. Evaluation of mesoporous silica particles as a support for lipase immobilization in biodiesel production: Enhanced ethyl ester synthesis from algal oil. Results in Engineering (2024).
2. Biodiesel Production from Waste Cooking Oil Using Recombinant Escherichia coli Cells Immobilized into Fe3O4–Chitosan Magnetic Microspheres. Molecules (2024).
3. Biocatalyzed Transesterification of Waste Cooking Oil for Biodiesel Production Using Lipase from the Amazonian Fungus Endomelanconiopsis endophytica. Energies (2023).
4. Process intensification of catalytic liquid-liquid solid processes: Continuous biodiesel production using an immobilized lipase in a centrifugal contactor separator. Chemical Engineering Journal (2017).