Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/6612
Título: Lipase-catalyzed modification of butterfat via acidolysis with oleic acid
Autor: Balcão, Victor M.
Malcata, F. Xavier
Palavras-chave: Butterfat
Fatty acid
Lipase
Mucor javanicus
Hollow fiber reactor
Interesterification
Immobilization
Data: 1997
Editora: Elsevier
Citação: BALCÃO, Victor M. ; MALCATA, F. Xavier - Lipase-catalyzed modification of butterfat via acidolysis with oleic acid. Journal of Molecular Catalysis B: Enzymatic. ISSN 1381-1177. 3:1-4 (1997) 161-169
Resumo: During the last decade increased interest in reactions catalyzed by lipases from various microbial sources has prompted attempts to rationally design lipases and lipase-catalyzed processes aiming at modification of functional properties of oils and fats. The present communication reports experimental work on the chemical modification of anhydrous butterfat via interesterification reactions with oleic acid catalyzed by a commercial lipase immobilized by plain physical adsorption on a bundle of hydrophobic hollow fibers. The main goal of this research effort was to engineer butterfat so as to increase its level of unsaturated fatty acid residues (viz. oleic acid) and concomitantly decrease its level of medium-to-long chain saturated fatty acid residues (viz. myristic and palmitic acids). All reactions were carried out at 40 °C in the absence of any solvent but under controlled water activity, and their extent was monitored via Chromatographic assays for free fatty acids. Although a certain degree of net hydrolysis of butterfat was observed, the enzymatic process studied was technically feasible and able to reach the predefined goals.
Peer review: yes
URI: http://hdl.handle.net/10400.14/6612
Versão do Editor: doi:10.1016/S1381-1177(96)00053-7
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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