• M.A.SURYAWANSHI
• Dr. M. V. Bagal
• Mishal Shaju
• Abhimanyu Yadav
• Shubham Chavan

Conventional fuels are known for polluting air by emissions of sulfur dioxides, carbondioxides, particulate matter and other gases. Biodiesel is a renewable, biodegradable and non-toxic alternative fuel to ‘fossil’ diesel. Biodiesel manufacturers are focusing their attention on using low-cost feedstock such as waste cooking oil to ensure economic viability in biodiesel production. Waste cooking oil(WCO) is far less expensive than refined vegetable oils and therefore has become a promising alternative feedstock to produce biodiesel. WCO contain large amount of free fatty acid (FFA) and water. Enzymatic transesterification has drawn researcher's attention in last ten years due to the downstream processing problem such as huge amount of wastewater generation and difficulty in glycerol recovery posed by chemical transesterification in turn results in increase in the overall biodiesel production cost In contrast, enzyme catalysis proceeds without the generation of by-products, easy recovery of product, mild reaction condition, insensitive to high FFA oil and catalyst can be reused. The present review focusses on the enzyme catalyzed biodiesel production which is eco friendly and promising alternative to the chemical process. High cost of enzyme is main disadvantage of enzymatic transesterification. So to overcome this drawback immobilization and pretreatment of enzyme is necessary. Along with that various lipase as biocatalyst and their operating conditions are discussed. With proper research focus and development, waste cooking oil can indeed become the next ideal feedstock for biodiesel production using enzyme as a catalyst.

Biodiesel, waste cooking oil, enzymatic, transesterification.

"REVIEW : ENZYMATIC TRANESTERIFICATION OF WASTE COOKING OIL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 6, page no.1132-1142, June 2020, Available :http://www.jetir.org/papers/JETIR2006499.pdf

"REVIEW : ENZYMATIC TRANESTERIFICATION OF WASTE COOKING OIL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 6, page no. pp1132-1142, June 2020, Available at : http://www.jetir.org/papers/JETIR2006499.pdf