

Properties of a Biocatalyst Based on Immobilized Recombinant Lipase Geobacillus stearothermophilus G3 in Synthesis of Methyl Esters of Fatty Acids
https://doi.org/10.18412/1816-0387-2015-6-90-96
Abstract
A heterogeneous biocatalyst BCL based on recombinant extracellular lipase of thermophilic bacterium Geobacillus stearothermophilus G3 with the activity of 23,6 act.un./g was prepared by covalent immobilization on aminated silica gel. The influence of the solvent nature, temperature (30–60 °C), proportion of water (1–10 %) and catalyst (0,25–25 %) on the yield of methyl esters of fatty acids (MEFA) was studied in the reaction of methanolysis of sunflower oil over the BCL catalyst. The observed maximal MEFA yield was 43 %. A high operation stability of the catalyst under study was demonstrated: The catalyst kept more than 50 % of its initial activity after 480 h operation (20 cycles) that makes it promising for synthesis of fatty acid esters used for production of biodiesel fuel.
About the Authors
Yu. V. SamoilovaRussian Federation
A. S. Piligaev
Russian Federation
K. N. Sorokina
Russian Federation
A. S. Rozanov
Russian Federation
S. E. Pel’tek
Russian Federation
A. A. Novikov
Russian Federation
N. R. Almyasheva
Russian Federation
V. N. Parmon
Russian Federation
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Review
For citations:
Samoilova Yu.V., Piligaev A.S., Sorokina K.N., Rozanov A.S., Pel’tek S.E., Novikov A.A., Almyasheva N.R., Parmon V.N. Properties of a Biocatalyst Based on Immobilized Recombinant Lipase Geobacillus stearothermophilus G3 in Synthesis of Methyl Esters of Fatty Acids. Kataliz v promyshlennosti. 2015;15(6):90-96. (In Russ.) https://doi.org/10.18412/1816-0387-2015-6-90-96