Journal
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 147, Issue 2, Pages 1143-1156Publisher
SPRINGER
DOI: 10.1007/s10973-020-10408-4
Keywords
Biocatalysts; Hybrid support; Immobilization; Ionic liquids; Transesterification
Funding
- CoordenacAo de Aperfeicoamento de Pessoal de Nivel Superior-Brasil [001]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
Ask authors/readers for more resources
The present study evaluated the synergistic effect of imidazolium-based ionic liquids (IL) in the preparation and immobilization of Burkholderia cepacia lipase, using a hybrid support of poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) and silica. The results showed that the use of IL significantly increased the immobilization yield of the lipase and caused changes in the morphological structure of the hybrid support. Transesterification reactions using the immobilized lipase showed high conversion rates under specific conditions.
The present work aims to evaluate the synergistic effect of imidazolium-based ionic liquids (IL) in the preparation and immobilization of Burkholderia cepacia lipase in a new hybrid support of poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) and silica. In addition, these biocatalysts were applied in transesterification reactions of crude coconut oil for the production of ethyl esters. Lipase immobilized on hybrid support with [C(4)min][NTf2] or [C(6)min][NTf2] ionic liquid exhibited nearly approximate to 1.6-fold immobilization yield greater than IB-Control. The use of IL during the preparation of the hybrid support promoted changes in its morphological structure as presented by B.E.T. and FTIR. Thermogravimetric analyzes were used to characterize the prepared derivatives and support the results of immobilization yields and the synergic effect of IL used. Transesterification reactions applying biocatalysts showed that the conversion maximum in esters (59%) was found under conditions of molar ratio 1:7 (oil:ethanol) in 72 h of reaction. These results were obtained using [C(4)min][NTf2] during the preparation of the hybrid support for the immobilization of Burkholderia cepacia lipase, thus showing the potential of these new biocatalysts.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available