Alligator Diesel

A researcher at the University of Louisiana in Lafayette is proposing that alligator fat is an ideal feed stock for conversion to biodiesel. Evidently, the high lipid content of alligator fat makes it a better candidate than other animal lards. The information on the paper and its abstract is below.

Potential of Alligator Fat as Source of Lipids for Biodiesel Production
Srividya Ayalasomayajula
Ramalingam Subramaniam
August Gallo
Stephen Dufreche
Mark Zappi
Rakesh Bajpai

Chemical Engineering Department and Chemistry Department
University of Louisiana at Lafayette
Lafayette, Louisiana 70504
United States

Large amount of alligator fat (AF) is produced by alligator meat processing industry and disposed in landfills or discarded as waste. The AF can be used as a potential feedstock for biodiesel production due to its high lipid content. In this work, recovery of lipids from the AF tissue was studied by solvent extraction as well as by microwave rendering. Microwave rendering resulted in AF oil recovery of 61% by weight of the frozen AF tissue obtained from producers. The fatty acid profile of the lipid showed that palmitic acid (C16:0), palmitoleic acid (C16:1), and oleic acid (C18:1) were the dominant fatty acids accounting for 89–92% of all lipids by mass; 30% of the fatty acids were saturated and 70% were unsaturated. The biodiesel produced from AF oil was found to meet the ASTM specifications of biodiesel concerning kinematic viscosity, sulfur, free and total glycerin, flash point, cloud point, and acid number.

Currently, alligator fat is a waste byproduct from processing alligator skins. Approximately 15 million pounds (7,500 tons) is produced annually and disposed of in landfills. This amount of fat could produce 1.25 million gallons (29,762 Bbls) of biodiesel. This is about 1/50 (2%) of the amount of diesel fuel that is consumed in the State of Louisiana.

Me, I still prefer Alligator Sauce Piquant!