Artículos de revistas
Influence Of Protein-pectin Electrostatic Interaction On The Foam Stability Mechanism
Registro en:
Carbohydrate Polymers. , v. 103, n. 1, p. 55 - 61, 2014.
1448617
10.1016/j.carbpol.2013.11.070
2-s2.0-84891706778
Autor
Sadahira M.S.
Lopes F.C.R.
Rodrigues M.I.
Netto F.M.
Institución
Resumen
This study aimed at evaluating the effect of three independent variables: biopolymer concentration (egg white proteins and pectin) (2.0-4.0%, w/w); protein:pectin ratio (15:1-55:1); and temperature (70-80 C), at pH 3.0, using a central composite design on the foaming properties (overrun, drainage and bubble growth rate). Foams produced with protein:pectin ratio 15:1 showed the lowest bubble growth rate and the greatest drainage, whereas protein:pectin ratio 55:1 presented the lowest drainage. Complexes obtained with protein:pectin ratio 15:1 were close to electroneutrality and showed larger size (95.91 ± 8.19 μm) than those obtained with protein:pectin ratio 55:1 (45.92 ± 3.47 μm) not electrically neutral. Larger particles seemed to build an interfacial viscoelastic network at the air-water interface with reduced gas permeability, leading to greater stability concerning the disproportionation. 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