Microbial degradation of palm (Elaeis guineensis) biodiesel.
The kinetics of biodegradation of palm-derived fatty methyl and ethyl esters (Elaeis guineensis biodiesel) by a wild-type aerobic bacterial population was measured at 20 degrees C, as the rate of oxygen uptake by a manometric technique. The methyl and ethyl biodiesels were obtained by potassium-hydroxide catalysed trans-esterification of palm oil, respectively. The bacterial flora included the genera Bacillus, Proteus, Pseudomonas, Citrobacter and Enterobacter. The rate of oxygen uptake for palm biodiesel is similar to the quantity observed in the biodegradation of 1.0 mM solutions of simple substrates such as carbohydrates or amino acids. Palm methyl or ethyl biodiesel is subjected to facile aerobic biodegradation by wild-type bacteria commonly present in natural open environments. This result should lessen any environmental concern for its use as alternative fuel, solvent or lubricant.
Lutz
Giselle
G
Laboratory of Bio-organic Chemistry, School of Chemistry, University of Costa Rica, 2060, Costa Rica. glutz@equi.ucr.ac.cr
Chavarría
Max
M
Arias
María Laura
ML
Mata-Segreda
Julio F
JF
D001673:Biodegradation, Environmental; D004736:Energy-Generating Resources; D006090:Gram-Negative Bacteria / Q000378:metabolism*; D006094:Gram-Positive Bacteria / Q000378:metabolism*; D000073878:Palm Oil; D010938:Plant Oils / Q000737:chemistry / Q000378:metabolism*
D010938:Plant Oils; D000073878:Palm Oil