Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/319993
Type: Artigo de Periódico
Title: Comparison Of The Regiospecific Distribution From Triacylglycerols After Chemical And Enzymatic Interesterification Of High Oleic Sunflower Oil And Fully Hydrogenated High Oleic Sunflower Oil Blend By Carbon-13 Nuclear Magnetic Resonance
Author: Lopes
TIB; Ribeiro
MDMM; Ming
CC; Grimaldi
R; Goncalves
LAG; Marsaioli
AJ
Abstract: The nutritional and organoleptic attributes of oils can proceed via interesterification of oils blends catalyzed by enzymes or chemicals. Enzymatic interesterification processes are preferred due the regiospecific outcome. Traditionally, monitoring of distribution of fatty acids (FA) in glycerol backbone is performed by enzymatic and chromatographic methods that are time-consuming, involving a series of chemical manipulations employing large volumes of organic solvents. Alternatively, carbon-13 nuclear magnetic resonance (C-13 NMR) is a fast and reliable technique that could be applied to determine the saturated and unsaturated FA distribution of the triacylglycerols (TAGs) present in high oleic sunflower oil (SO) and fully hydrogenated high oleic sunflower oil (HSO) blends and their interesterification products. The enzymatic interesterification was conducted employing the immobilized lipase from Thermomyces lanuginosus (Lipozyme TL IM), the results show that the process was not completely regiospecific at sn-1,3 positions, due to the spontaneous acyl migration from position sn-2 to sn-1,3. (C) 2016 Elsevier Ltd. All rights reserved.
Subject: C-13 Nmr
High Oleic Sunflower Oil
Regiospecificity
Interesterification
Editor: ELSEVIER SCI LTD
Rights: fechado
Identifier DOI: 10.1016/j.foodchem.2016.06.024
Address: http://www-sciencedirect-com.ez88.periodicos.capes.gov.br/science/article/pii/S0308814616309177
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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