Abstract
Modified Candida rugosa lipase was co-lyophilized with two gemini-type amphiphiles, l- and d-2-(3-bis-[3-(2,3,4,5,6-pentahydroxy-hexanoylamino)-propyl]-carbamoyl -propionylamino)-pentanedioic acid didodecyl ester or dodecanoic acid 2-[(3-bis-[3-(2,3,4,5,6-pentahydroxy-hexanoylamino)-propyl]-carbamoyl -propionyl)-(2-dodecanoyloxy-ethyl)-amino]-ethyl ester. Enzymatic activities of the modified lipases in the transesterification between racemic 2,2-dimethyl-1,3-dioxolane-4-methanol and vinyl butyrate in cyclohexane were enhanced as much as by 37-78, 1.5–5- and 41–83-fold of magnitude relative to that of native enzyme, respectively. The lack of significant enhancement of the enzymatic activity, only in the case of the d-isomeric amphiphile-modified lipase, was considered from the topological view of the amphiphile.
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