Enzymatic Biodiesel Production from Low-Quality Waste Oils and Non-edible Oils: Current Status and Future Prospects

Mun Yuen Chang, Jun Mann Loh, Cher Pin Song, Eng Seng Chan

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Otherpeer-review

5 Citations (Scopus)


Depletion of fossil fuel, increasing energy demand and environmental degradation have motivated the development and application of biofuels. Biodiesel is a promising replacement for fossil diesel because it can be derived from renewable sources and it lowers the emission of greenhouse gases. This chapter comprehensively reviews the process for biodiesel production, especially from low-quality and non-edible feedstocks that contain a high amount of impurities. The enzymatic process is highlighted as it provides more environmental benefits as compared to the conventional chemical-catalysed transesterification process. An overview of the reaction scheme and mechanism of an enzymatic process is presented along with a critical discussion on the different types of enzymes that have been studied for biodiesel production. The industrial adoption of enzymatic processes for biodiesel production is also presented. Finally, the limitations and challenges of enzymatic processes for biodiesel production are discussed to provide a direction for process improvement in the future.

Original languageEnglish
Title of host publicationRecent Advances in Edible Fats and Oils Technology
Subtitle of host publicationProcessing, Health Implications, Economic and Environmental Impact
EditorsYee-­Ying Lee, Teck-Kim Tang, Eng-Tong Phuah, Oi-Ming Lai
Place of PublicationSingapore Singapore
Number of pages29
ISBN (Electronic)9789811651137
ISBN (Print)9789811651120
Publication statusPublished - 2022


  • Acid-base process
  • Biodiesel
  • Free enzyme lipase
  • Glycerolysis
  • Immobilized enzyme lipase
  • Second generation feedstock

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