NDLI: Microwave-assisted enzymatic synthesis of beef tallow biodiesel

Content Provider	Springer Nature Link
Author	Rós, Patrícia C. M. Castro, Heizir F. Carvalho, Ana K. F. Soares, Cleide M. F. Moraes, Flavio F. Zanin, Gisella M.
Copyright Year	2011
Abstract	Optimal conditions for the microwave-assisted enzymatic synthesis of biodiesel have been developed by a full 22 factorial design leading to a set of seven runs with different combinations of molar ratio and temperature. The main goal was to reduce the reaction time preliminarily established by a process of conventional heating. Reactions yielding biodiesel, in which beef tallow and ethanol used as raw materials were catalyzed by lipase from Burkholderia cepacia immobilized on silica-PVA and microwave irradiations within the range of 8–15 W were performed to reach the reaction temperature. Under optimized conditions (1:6 molar ratio of beef tallow to ethanol molar ratio at 50°C) almost total conversion of the fatty acid presented in the original beef tallow was converted into ethyl esters in a reaction that required 8 h, i.e., a productivity of about 92 mg ethyl esters g−1 h−1. This represents an increase of sixfold for the process carried out under conventional heating. In general, the process promises low energy demand and higher biodiesel productivity. The microwave assistance speeds up the enzyme catalyzed reactions, decreases the destructive effects on the enzyme of the operational conditions such as, higher temperature, stability, and specificity to its substrate, and allows the entire reaction medium to be heated uniformly.
Starting Page	529
Ending Page	536
Page Count	8
File Format	PDF
ISSN	13675435
Journal	Journal of Industrial Microbiology and Biotechnology
Volume Number	39
Issue Number	4
e-ISSN	14765535
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-11-26
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Biodiesel Microwave Beef tallow Transesterification Immobilized lipase Inorganic Chemistry Microbiology Bioinformatics Genetic Engineering Biochemistry Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Bioengineering Applied Microbiology and Biotechnology Biotechnology

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