Interrelationship between the zeta potential and viscoelastic properties in coacervates complexes

被引：109

作者：

Espinosa-Andrews, Hugo ^{[1
]}

Esmeralda Enriquez-Ramirez, Karina ^{[1
]}

Garcia-Marquez, Eristeo ^{[2
]}

Ramirez-Santiago, Cesar ^{[3
,4
]}

Lobato-Calleros, Consuelo ^{[3
,4
]}

Vernon-Carter, Jaime ^{[2
]}

机构：

[1] Ctr Invest & Asistencia Tecnol & Diseno Estado Ja, Unidad Tecnol Alimentaria, Guadalajara 44270, Jalisco, Mexico

[2] Univ Autonoma Metropolitana Iztapalapa, Dept Ingn Proc & Hidraul, Mexico City 09340, DF, Mexico

[3] Univ Autonoma Chapingo, Dept Preparatoria Agr, Texcoco 56230, Edo Mexico, Mexico

[4] Univ Autonoma Chapingo, Dept Ingn Agroind, Texcoco 56230, Edo Mexico, Mexico

来源：

CARBOHYDRATE POLYMERS | 2013年 / 95卷 / 01期

关键词：

Gum Arabic; Chitosan; Polyelectrolytes; Complex coacervation; Zeta-potential; Rheology; BETA-LACTOGLOBULIN; MULTIPLE EMULSIONS; AQUEOUS-SOLUTIONS; MOLECULAR-WEIGHT; CHITOSAN; GUM; BIOPOLYMERS; W-1/O/W-2; SYSTEMS; CHEESE;

D O I：

10.1016/j.carbpol.2013.02.053

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The formation of the complex coacervate (CC) phases between gum Arabic (GA) and low molecular weight chitosan (Ch) and the interrelationship between the zeta-potential and viscoelastic properties of the coacervate phase were investigated. The maximum charge difference of biopolymers stock dispersion was displayed in a range of pH between 4.0 and 5.5. Titration experiment between the oppositely charged biopolymers showed that the isoelectric point was found at a biopolymers mass ratio (R-[GA:Ch]) of R-[5.5:1]. Turbidity, size and zeta-potential of the soluble complexes (SC) showed an interrelation with the complex coacervate yield (CCY). Higher CCY values (82.2-88.1%) were obtained in the range from R-[3:1] to R-[5.5:1]. Change the R-[GA:Ch] in dispersion, make possible to produce CC's phases exhibiting cationic (R-[1:1] and R-[3:1]), neutral (R-[5.5:1]) or anionic (R-[9:1] and R-[7:1]) charged. All CC's exhibited liquid-viscoelastic behavior at lower frequencies and a crossover between G '' and G' at higher frequencies. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：161 / 166

页数：6

共 26 条

[1] PRACTICAL ANALYSIS OF COMPLEX COACERVATE SYSTEMS [J].