📜异丁醇,月桂酸乙烯酯置于二氧化碳体系中,46.02 °C,8.81 Mpa 条件下,反应 3.5H,以98%的收率获得产物十二烷酸异丁酯
参考文献:Immobilization Of Lipase On Biocompatible Co-Polymer Of Polyvinyl Alcohol And Chitosan For Synthesis Of Laurate Compounds In Supercritical Carbon Dioxide Using Response Surface Methodology
标题:Immobilization Of Lipase On Biocompatible Co-Polymer Of Polyvinyl Alcohol And Chitosan For Synthesis Of Laurate Compounds In Supercritical Carbon Dioxide Using Response Surface Methodology
摘要:Biocompatible Co-Polymer Matrix Has Great Importance For Enzyme Immobilization And Subsequent Bio-Catalytic Applications To Synthesize Important Organic Moieties. Citronellyl Laurate Is A Fatty-Acid-Ester Having Pleasant Fruity Aroma And Widely Used As/in Emulsifier,Lubricant In Textile,Paint Or Ink-Additives,Surfactants,Perfumery And Food-Flavouring Ingredient. In Present Study,Burkholderia Cepacia Lipase (Bcl) Was Immobilized On Biodegradable Co-Polymer Of Chitosan (Chi) And Polyvinyl Alcohol (Pva). The Synthesized Bio-Catalyst {pva:Chi:Bcl (6:4:2.5)} Was Characterized By Sem,Tga,Lipase Assay And Protein-Content Analysis. This Biocatalyst Was Applied To Synthesize Citronellyl Laurate In Supercritical Carbon-Dioxide (Sc-Co2) Using Response Surface Methodology With Five-Factor-Three-Level Box-Behnken-Design To Optimize Reaction Parameters (Citronellol: 8.5 Mmol; Vinyl Laurate: 19.87 Mmol; Biocatalyst: 175.6 Mg; Temperature: 46.02 Degrees C; Pressure: 8.81 Mpa) Which Provided 94 +/-1.52% Yield. The Protocol Is Extended To Synthesize Various Important 12 Laurate Compounds With Excellent Yield (90-98%) And Noteworthy Recyclability (Upto Studied 5 Recycles). Interestingly,Immobilized Pva/chi/lipase Biocatalyst Showed 4-Fold Higher Bio-Catalytic Activity Than Free Lipase In Sc-Co2. Moreover,The Biocatalyst Activity Assessment Study Showed Remarkable Activity-Stability Of Immobilized Biocatalyst In Sc-Co2 Media As Compared To Free Enzyme. Thus,Present Protocol Demonstrated Potential Biocatalytic Applications For Synthesis Of Important Laurate Compounds With Excellent Recyclability In Sc-Co2 As Greener Biocatalyst And Reaction Medium. (C) 2015 Elsevier Ltd. All Rights Reserved.
DOI:10.1016/j.Procbio.2015.04.019