The effects of ionic liquid media on the activity of Candida antarctica lipase B in a simple transesterification reaction were studied. In ionic liquids containing alkylsulfate, nitrate and lactate anions, which dissolved CaLB, the reaction was at least ten times slower than in [BMIm][BF4]. Only [Et3MeN][MeSO4] was an exception, as dissolved CaLB maintained its activity in this solvent. By means of FT-IR spectroscopy, denaturation of CaLB was observed upon dissolution in ionic liquids in which the activity was low, whereas the conformation of enzyme dissolved in [Et3MeN][MeSO4] closely resembled the native one.
Dissolution of Candida antarctica lipase B in ionic liquids: effects on structure and activity
Giacomo Carrea;Francesco Secundo;
2004
Abstract
The effects of ionic liquid media on the activity of Candida antarctica lipase B in a simple transesterification reaction were studied. In ionic liquids containing alkylsulfate, nitrate and lactate anions, which dissolved CaLB, the reaction was at least ten times slower than in [BMIm][BF4]. Only [Et3MeN][MeSO4] was an exception, as dissolved CaLB maintained its activity in this solvent. By means of FT-IR spectroscopy, denaturation of CaLB was observed upon dissolution in ionic liquids in which the activity was low, whereas the conformation of enzyme dissolved in [Et3MeN][MeSO4] closely resembled the native one.File in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
|
prod_17200-doc_9403.pdf
non disponibili
Descrizione: Articolo pubblicato
Dimensione
361.03 kB
Formato
Adobe PDF
|
361.03 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
