Effect of interfacial viscoelasticity on the bulk linear viscoelastic moduli of globular protein solutions

Zhenhuan Zhang, Sourav Barman, Gordon F. Christopher

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The role of interfacial rheology on the bulk linear viscoelastic moduli of low concentration bovine albumin solutions is probed. Previously reported soft gel properties of these systems were attributed to either protein aggregation or organization within the bulk. Instead, these behaviors are shown to be attributable to the measurement error caused by interfacial rheology due to adsorption of bovine serum albumin to the air and water interface. Even at low bulk concentrations, fast interfacial adsorption results in erroneous measurements. When these effects are removed, the solutions are viscous dominated with a dynamic viscosity slightly larger than water.

Original languageEnglish (US)
Article number052306
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume89
Issue number5
DOIs
StatePublished - May 14 2014

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Rheology
Viscoelasticity
viscoelasticity
albumins
rheology
Adsorption
Modulus
proteins
Protein
Water
adsorption
Measurement Error
serums
water
low concentrations
Aggregation
Viscosity
gels
viscosity
air

Cite this

Effect of interfacial viscoelasticity on the bulk linear viscoelastic moduli of globular protein solutions. / Zhang, Zhenhuan; Barman, Sourav; Christopher, Gordon F.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 89, No. 5, 052306, 14.05.2014.

Research output: Contribution to journalArticle

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