氯离子杂质对离子液体中脂肪酶催化酯交换反应的不利影响。
Adverse effect of chloride impurities on lipase-catalyzed transesterifications in ionic liquids.
作者信息
Lee Sang Hyun, Ha Sung Ho, Lee Sun Bok, Koo Yoon-Mo
机构信息
Department of Biological Engineering, ERC for Advanced Bioseparation Technology, Inha University, Incheon 402-751, Korea.
出版信息
Biotechnol Lett. 2006 Sep;28(17):1335-9. doi: 10.1007/s10529-006-9095-6. Epub 2006 Jul 4.
The adverse influence of chloride impurities on the lipase-catalyzed transesterification in ionic liquid is described. The activity of lipase from Rhizomucor miehei exponentially decreased with increasing Cl(-) content in 1-octyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl] amide, [Omim][Tf(2)N], and the activity of lipase in [Omim][Tf(2)N] mixture containing 2% [Omim] [Cl] was only about 2% of the activity in pure [Omim][Tf(2)N]. The activity of lipase from Candidantarctica linearly decreased at about 5% with every 1% increase in [Omim][Cl] with there being no activity in [Omim][Tf(2)N] containing about 20% [Omim][Cl].
描述了氯化物杂质对离子液体中脂肪酶催化酯交换反应的不利影响。在1-辛基-3-甲基咪唑双[（三氟甲基）磺酰基]酰胺（[Omim][Tf₂N]）中，米黑根毛霉脂肪酶的活性随Cl⁻含量增加呈指数下降，在含有2%[Omim][Cl]的[Omim][Tf₂N]混合物中，脂肪酶活性仅为纯[Omim][Tf₂N]中活性的约2%。每增加1%的[Omim][Cl]，南极假丝酵母脂肪酶的活性线性下降约5%，在含有约20%[Omim][Cl]的[Omim][Tf₂N]中则无活性。
Zotero 插件