Titre du document / Document title

Lipase-mediated conversion of vegetable oils into biodiesel using ethyl acetate as acyl acceptor

Auteur(s) / Author(s)

MUKESH KUMAR MODI ⁽¹⁾ ; REDDY J. R. C. ⁽¹⁾ ; RAO B. V. S. K. ⁽¹⁾ ; PRASAD R. B. N. ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Division of Lipid Science and Technology, Indian Institute of Chemical Technology, Hyderabad 500 007, INDE

Résumé / Abstract

Ethyl acetate was explored as an acyl acceptor for immobilized lipase-catalyzed preparation of biodiesel from the crude oils of Jatropha curcas (jatropha), Pongamia pinnata (karanj) and Helianthus annuus (sunflower). The optimum reaction conditions for interesterification of the oils with ethyl acetate were 10% of Novozym-435 (immobilized Candida antarctica lipase B) based on oil weight, ethyl acetate to oil molar ratio of 11:1 and the reaction period of 12 h at 50 °C. The maximum yield of ethyl esters was 91.3%, 90% and 92.7% with crude jatropha, karanj and sunflower oils, respectively under the above optimum conditions. Reusability of the lipase over repeated cycles in interesterification and ethanolysis was also investigated under standard reaction conditions. The relative activity of lipase could be well maintained over twelve repeated cycles with ethyl acetate while it reached to zero by 6th cycle when ethanol was used as an acyl acceptor.

Revue / Journal Title

Bioresource technology   ISSN 0960-8524 

Source / Source

2007, vol. 98, n^o6, pp. 1260-1264 [5 page(s) (article)] (1/4 p.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier Science, Oxford, ROYAUME-UNI  (1991) (Revue)

Mots-clés anglais / English Keywords

Enzyme ; Thallophyta ; Fungi ; Fungi Imperfecti ; Ethanol ; Acetate ; Lipolytic enzyme ; candida antarctica ; Interesterification ; Acyl ; Diesel fuel ; Biodiesel ; Vegetable oil ;

Mots-clés français / French Keywords

Enzyme ; Thallophyta ; Fungi ; Fungi Imperfecti ; Ethanol ; Acétate ; Lipolytic enzyme ; Candida antarctica ; Interestérification ; Acyle ; Carburant diesel ; Biodiesel ; Huile végétale ;

Mots-clés espagnols / Spanish Keywords

Enzima ; Thallophyta ; Fungi ; Fungi Imperfecti ; Etanol ; Acetato ; Lipolytic enzyme ; candida antarctica ; Interesterificación ; Acilo ; Carburante diesel ; Biodiesel ; Aceite vegetal ;

Mots-clés d'auteur / Author Keywords

Biodiesel ; Candida antarctica ; Ethanol ; Ethyl acetate ; Interesterification ; Lipase ;

Localisation / Location

INIST-CNRS, Cote INIST : 18769, 35400015950869.0150