Topic
Butyl butyrate
About: Butyl butyrate is a research topic. Over the lifetime, 211 publications have been published within this topic receiving 5065 citations. The topic is also known as: n-butyl butyrate & n-butyl butanoate.
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TL;DR: In this paper, two water-immiscible ionic liquids (ILs), 1-ethyl-3-methylimidizolium bis(trifluoromethylsulfonyl)imide and butyltrimethylammonium bis (triflooromethythmophosphamide) bis(tphosphoric acid), were used for butyl butyrate synthesis from Vinyl Butyrate catalyzed by Candida antarctica lipase B (CALB).
305 citations
TL;DR: In this article, four ionic liquids based on dialkylimidazolium cations associated with perfluorinated and bis(trifluoromethyl)sulfonyl amide anions were used as reaction media for butyl butyrate synthesis catalyzed by free Candida antarctica lipase B at 2% (v/v) water content and 50 °C.
Abstract: Four different ionic liquids, based on dialkylimidazolium cations associated with perfluorinated and bis(trifluoromethyl)sulfonyl amide anions were used as reaction media for butyl butyrate synthesis catalyzed by free Candida antarctica lipase B at 2% (v/v) water content and 50 °C. Lipase had enhanced synthetic activity in all ionic liquids in comparison with two organic solvents (hexane, and 1-butanol), the enhanced activity being related to the increase in polarity of ionic liquids. The continuous operation of lipase with all the assayed ionic liquids showed over-stabilization of the enzyme. The reuse of free lipase in 1-butyl-3-methylimidazolium hexafluorophosphate in continuous operation cycles showed a half-life time 2300 times greater than that observed when the enzyme was incubated in the absence of substrate (3.2 h), and a selectivity higher than 90%.
241 citations
TL;DR: Candida rugosa lipase was immobilized by covalent binding on controlled poresilica (CPS) using glutaraldehyde ascross-linking agent under aqueous and nonaqueous conditions and revealed good potential for recycling under ahydrous (olive-oil hydrolysis) andNonaqueous (butyl butyrate synthesis) conditions.
Abstract: Candida rugosa lipase was immobilized by covalent binding on controlled pore silica (CPS) using glutaraldehyde as cross-linking agent under aqueous and nonaqueous conditions. The immobilized C. rugosa was more active when the coupling procedure was performed in the presence of a nonpolar solvent, hexane. Similar optima pH (7.5–8.0) was found for both free and immobilized lipase. The optimum temperature for the immobilized lipase was about 10°C higher than that for the free lipase. The thermal stability of the CPS lipase was also greater than the original lipase preparation. Studies on the operational stability of CPS lipase revealed good potential for recycling under aqueous (olive-oil hydrolysis) and nonaqueous (butyl butyrate synthesis) conditions.
209 citations
TL;DR: Soluble Candida antarctica lipase B dissolved in ionic liquids showed good synthetic activity, enantioselectivity and operational stability in supercritical carbon dioxide for both butyl butyrate synthesis and the kinetic resolution of 1-phenylethanol processes by transesterification.
206 citations
TL;DR: In this paper, nine potential bio-fuels derived from sustainable sources were tested for their compatibility with Jet A-1 aviation kerosene, and the effect of each fuel on the range vs. the payload, relative to Jet A -1 was determined using a simplified model in order to ascertain likely impact of adoption upon airline operations.
205 citations