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- W2143402382 abstract "Five microbial lipase preparations from several sources were immobilized by hydrophobic adsorption on small or large poly-hydroxybutyrate (PHB) beads and the effect of the support particle size on the biocatalyst activity was assessed in the hydrolysis of olive oil, esterification of butyric acid with butanol and transesterification of babassu oil (Orbignya sp.) with ethanol. The catalytic activity of the immobilized lipases in both olive oil hydrolysis and biodiesel synthesis was influenced by the particle size of PHB and lipase source. In the esterification reaction such influence was not observed. Geobacillus thermocatenulatus lipase (BTL2) was considered to be inadequate to catalyze biodiesel synthesis, but displayed high esterification activity. Butyl butyrate synthesis catalyzed by BTL2 immobilized on small PHB beads gave the highest yield (≈90 mmol L(-1)). In biodiesel synthesis, the catalytic activity of the immobilized lipases was significantly increased in comparison to the free lipases. Full conversion of babassu oil into ethyl esters was achieved at 72 h in the presence of Pseudozyma antarctica type B (CALB), Thermomyces lanuginosus lipase (Lipex(®) 100 L) immobilized on either small or large PHB beads and Pseudomonas fluorescens (PFL) immobilized on large PHB beads. The latter preparation presented the highest productivity (40.9 mg of ethyl esters mg(-1) immobilized protein h(-1))." @default.
- W2143402382 created "2016-06-24" @default.
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- W2143402382 creator A5067285100 @default.
- W2143402382 creator A5087946278 @default.
- W2143402382 date "2012-04-01" @default.
- W2143402382 modified "2023-10-17" @default.
- W2143402382 title "Evaluation of immobilized lipases on poly-hydroxybutyrate beads to catalyze biodiesel synthesis" @default.
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- W2143402382 doi "https://doi.org/10.1016/j.ijbiomac.2012.01.020" @default.
- W2143402382 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22285987" @default.
- W2143402382 hasPublicationYear "2012" @default.
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