Title
Emulsifying properties of hydrolysed and low HLB sunflower lecithin mixtures
Date Issued
01 July 2016
Access level
metadata only access
Resource Type
journal article
Author(s)
Universidad Nacional de Quilmes
Publisher(s)
Wiley-VCH Verlag
Abstract
Most commonly processes for lecithin modification are deoling, fractionation with absolute ethanol to produce phosphatidylcholine or phosphatidylinositol-enriched fractions, or enzymatic hydrolysis of these compounds. These modifications are important for achieving an optimal balance between hydrophilic and lipophilic compounds (HLB) and ensure a good food processing ability. The aim of this work was to improve the O/W emulsifying properties of modified lecithins with low HLB mixing them with hydrolysed sunflower lecithin obtained using a microbial phospholipase A2 (PLA2). Thereby, three modified sunflower lecithins (hydrolysed (HL), deoiled (DSL), and PI fraction (PIf)) were obtained. These modified lecithins and their mixtures were applied as emulsifying agent of coarse and fine O/W emulsions (Φm= 0.3). Stability of different emulsions was evaluated through the evolution of backscattering profiles, particle size distribution, and mean particle diameters. Mixtures with a hydrolysed lecitihin increased the HLB (addition of lysophospholipids) and improved the O/W emulsifying properties of DSL and PIf in each case. Mixtures 0.5:0.5 of DSL/HL or PIf/HL produced a similar behavior than 1% HL emulsions, constituting a good alternative for production of new bioactive agents. Practical applications: This study deals about the increase of the O/W emulsifying properties and thereby the commercial value of modified sunflower lecithins with low HLB values. The main target of this research work is to contribute with useful information to the food industry. Flow diagram of the process used for producing different modified lecithins to analyze their emulsifier properties in mixtures.
Start page
975
End page
983
Volume
118
Issue
7
Language
English
OCDE Knowledge area
Biotecnología agrícola, Biotecnología alimentaria
Ingeniería química
Subjects
Scopus EID
2-s2.0-84945206875
Source
European Journal of Lipid Science and Technology
ISSN of the container
14387697
Sources of information:
Directorio de Producción Científica
Scopus