Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/319283
Type: Artigo de periódico
Title: Effect Of Egg White Protein-pectin Electrostatic Interactions In A High Sugar Content System On Foaming And Foam Rheological Properties
Abstract: The aim of this study was to evaluate the effect of electrostatic interaction between egg white protein (EW) and pectin in a high sugar content system (80 wt% total solid) on the foaming properties (density, overrun and stability) and foam rheological properties. A central composite rotatable design was carried out to study the effects of biopolymer concentration (1.40-5.60%, w/w) and EW:pectin ratio (7:1-63:1) on the apparent viscosity before whipping, foaming capacity (density and overrun) and foam rheological properties (storage modulus G', loss modulus G" and phase angle δ) of sugar/EW/pectin mixtures at pH 3.0. The apparent viscosity increased as biopolymer concentration increased while EW:pectin ratio had no significant effect (p>0.10) on this response. At 7:1 EW:pectin ratio, the mixture presented low foaming capacity, resulting in foam with less solid character and low stability, possibly due to the pectin excess in the system. At 49:1 EW:pectin ratio, the mixture showed higher foaming capacity and foam elasticity. The formation of soluble complexes between EW and pectin possibly increased the continuous phase viscosity and enhanced the foam stability by slowing liquid drainage. © 2016 Elsevier Ltd.
Editor: Elsevier
Citation: Food Hydrocolloids. Elsevier, v. 58, p. 1 - 10, 2016.
Rights: fechado
Identifier DOI: 10.1016/j.foodhyd.2016.02.007
Address: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958521080&partnerID=40&md5=c2d49de90b1c2ee4b826e824d3fb3b6a
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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