Efficient Candida rugosa lipase immobilization on Maghnite clay and application for the production of (1R)-(−)-Menthyl acetate

Autor: Zeineddine Djeghaba, Fatiha Benamia, Abderahmane Belafriekh, Sabrina Benouis, Nacer Rebbani, Noura Semache
Rok vydání: 2016
Předmět:
Zdroj: Chemical Papers. 71:785-793
ISSN: 1336-9075
2585-7290
DOI: 10.1007/s11696-016-0080-9
Popis: This work focused on the identification of natural, economical, and efficient supports for immobilization of Candida rugosa lipase (CRL) to catalyze the resolution of (±)-menthol. To this purpose, CRL has been immobilized on natural montmorillonite from Algeria (Maghnite-H), ion-exchange resins (Amberjet®1200-H and Amberjet®4200-Cl), and diatomaceous earth (Celite®545). After a preliminary screening of supports, the immobilization of CRL led to a markedly improved enantioselectivity. Excellent enantioselectivity (E ≥ 134) was achieved by the four supported lipases (E = 68 for free enzyme). Compared to the three other supports tested, higher enantioselectivity was observed with Maghnite-H used as immobilization matrix. In this work, the effects of solvent, reaction time, and temperature, on the conversion as well as on enantioselectivity were investigated. The maximum of conversion (% C = 43%) with high enantiomeric excess of products (eep > 99) was obtained when the reaction is catalyzed by CRL immobilized on Maghnite-H at 30 °C for 24 h, and using toluene as selected solvent. Immobilized CRL on Maghnite-H exhibited good thermostability over a wide temperature range (30–90 °C) compared to the free one. These results suggest that CRL immobilized on Maghnite-H has good potential as biocatalyst for the production of (1R)-(−)-menthyl acetate.
Databáze: OpenAIRE
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