Artículos de revistas
Interesterification of milkfat and soybean oil blends catalyzed by immobilized Rhizopus oryzae lipase
Fecha
2010Registro en:
JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC, v.65, n.1/Abr, Special Issue, p.117-121, 2010
1381-1177
10.1016/j.molcatb.2009.12.008
Autor
PAULA, Ariela V.
NUNES, Gisele F. M.
FREITAS, Larissa
CASTRO, Heizir F. de
SANTOS, Julio C.
Institución
Resumen
Milkfat (MF)/soybean oil (SBO) blends ranging from 50% to 100% of milkfat (w/w) were enzymatically interesterified with a sn-1,3 specific lipase from Rhizopus oryzae immobilized on polysiloxane-polyvinyl alcohol matrix, in a solvent free medium. Interesterification progress was monitored by following the changes in the relative proportions of 50-carbon triacylglycerols (TAGS) to 44-carbon TAGs (50/44 ratio) in the reaction. The starting materials and products were also analyzed in terms of consistency measured in a texturometer. All reactions gave interesterified (IE) products with lower consistency than non-interesterified (NIE) MF:SBO blends and interesterification degree varied from 0.54 to 2.60 in 48 h reaction. The highest interesterification degree was achieved for 65:35 MF:SBO blends, which gave 76% reduction in the consistency. These results showed the potential of the immobilized lipase to change the TAGs profile of the MF:SBO blend allowing to obtain cold-spreadable milkfat. (C) 2010 Elsevier B.V. All rights reserved.