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Alcoholysis of palm oil mid-fraction by lipase from Rhizopus rhizopodiformis


Basri, Mahiran and Heng, A. C. and Abdul Razak, Che Nyonya and Wan Yunus, Wan Md. Zin and Ahmad @ Ayob, Mansor and Raja Abdul Rahman, Raja Noor Zaliha and Ampon, Kamaruzaman and Salleh, Abu Bakar (1997) Alcoholysis of palm oil mid-fraction by lipase from Rhizopus rhizopodiformis. Journal of the American Oil Chemists' Society, 74 (2). pp. 113-116. ISSN 0003-021X; ESSN: 1558-9331


A mycelial lipase from Rhizopus rhizopodiformis was prepared in fragment form. The lipase was examined to catalyze the alcoholysis of palm oil mid-fraction (PMF) in organic solvents. High percentage conversions of PMF to alkyl esters were achieved when methanol or propanol was used as acyl acceptor. Of the two most prevalent fatty acids in PMF, palmitic acid seemed to be preferred over oleic acid in the formation of methyl and propyl esters. The optimal ratio of oil to methanol in the alcoholysis reaction is 1 to 2 moles. The lipase exhibited high alcoholysis activities in nonpolar solvents (log P>2), such as hexane, benzene, toluene, and heptane. The enzyme showed exceptionally high thermostability.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science and Environmental Studies
DOI Number: https://doi.org/10.1007/s11746-997-0154-5
Publisher: AOCS Press
Keywords: Alcoholysis; Mycelial lipase; Solvents; Stability
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 17 May 2016 07:06
Last Modified: 17 May 2016 07:06
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1007/s11746-997-0154-5
URI: http://psasir.upm.edu.my/id/eprint/36007
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