Abstract
Simple alkyl ester derivatives of restaurant grease were prepared using a lipase from Pseudomonoas cepacia immobilized within a phyllosilicate sol-gel matrix as biocatalyst. Alcoholysis reactions of grease were carried out in solvent-free media using a one-step addition of alcohol to the reaction mixture. The immobilized lipase was active from 40 to 70 degrees C. Ester yields (60-97%) were highest when using a ratio of reactants of 2 mmol grease to 8 mmol alcohol and the biocatalyst was 10% (w/w) of grease in the presence of molecular sieves.
Publication types
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Comparative Study
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Evaluation Study
MeSH terms
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Alkylation
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Conservation of Energy Resources
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Enzymes, Immobilized / biosynthesis
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Enzymes, Immobilized / chemistry
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Esterification
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Esters / chemical synthesis*
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Ethanol / chemistry*
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Fatty Acids, Nonesterified / chemistry*
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Gasoline
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Gels / chemistry
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Industrial Waste / prevention & control*
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Lipase / biosynthesis
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Lipase / chemistry*
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Plant Oils / chemistry*
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Quality Control
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Silicates / chemistry*
Substances
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Enzymes, Immobilized
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Esters
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Fatty Acids, Nonesterified
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Gasoline
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Gels
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Industrial Waste
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Plant Oils
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Silicates
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Ethanol
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Lipase