Use of ionic liquids as additives for the immobilization of lipase from Bacillus sp. was written by Cabrera-Padilla, Rebeca Y.;Melo, Elvio B.;Pereira, Matheus M.;Figueiredo, Renan T.;Fricks, Alini T.;Franceschi, Elton;Lima, Alvaro S.;Silva, Daniel P.;Soares, Cleide M. F.. And the article was included in Journal of Chemical Technology and Biotechnology in 2015.Recommanded Product: 1-Butyl-3-methylpyridinium Chloride This article mentions the following:
BACKGROUND: Ionic liquids (ILs) have been used as additives to immobilize lipase from a new source of Bacillus sp. (ITP-001) by the phys. adsorption method supporting green poly(3-hydroxybutyrate-co-hydroxyvalerate) (PHBV) in order to evaluate the influence of the cationic core ([C4mpy]Cl, [C4min]Cl), of anions ([C4min]Cl, [C4min]N(CN)2, [C4min]Tf2N) and the cation chain length ([C2min]Tf2N, [C4min]Tf2N)) in the immobilization process. The immobilized biocatalysts (IB) were characterized with regard to morphol. and physico-chem. properties, and total activity recovery yield (Ya) and biochem. properties of more efficient IB were evaluated. RESULT: Total activity recovery yield (Ya) for the immobilized biocatalysts employing LI as additives always resulted in higher values compared with the control. The most efficient was using the more hydrophobic IL [C4min]Tf2N, which represents a 2-fold greater increase in the recovery of enzymic activity. It retained more than 73% of its original activity after 20 reuses compared with the control, which, after ten cycles, retained only 33% of its original activity. CONCLUSION: The anions and the cation chain length of ionic liquids have a strong influence on the immobilization process. The results for biocatalyst immobilized with [C4min]Tf2N showed an increase in total activity recovery yield and considerable improvement in operational stability. © 2014 Society of Chem. Industry. In the experiment, the researchers used many compounds, for example, 1-Butyl-3-methylpyridinium Chloride (cas: 125652-55-3Recommanded Product: 1-Butyl-3-methylpyridinium Chloride).
1-Butyl-3-methylpyridinium Chloride (cas: 125652-55-3) belongs to pyridine derivatives. In contrast to benzene, Pyridine’s electron density is not evenly distributed over the ring, reflecting the negative inductive effect of the nitrogen atom. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Recommanded Product: 1-Butyl-3-methylpyridinium Chloride