Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 248, Issue 2, Pages 487-492Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/jcis.2001.8163
Keywords
semi-batch foam fractionation; ovalbumin; denaturation; stability; enrichment ratio
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Ovalbumin is a globular protein. When it is denatured, it can produce molecular species with different conformational states, each of which has different adsorption properties at a gas-liquid interface. Such changes in adsorption can then affect the foaming behaviors of ovalbumin. Results of semi-batch foam fractionation of both native and denatured ovalbumin aqueous solutions are reported in this paper, along with possible relationships between denaturation and foam fractionation outcomes, such as the enrichment ratio and mass recovery. Bubble size and foam stability are determined in the experiments to show the effect of denaturation on these measured parameters in this system. The relationships between the bubble size, void fraction, and ovalbumin enrichment are also reported to reflect the effect of the presence of denatured species. (C) 2002 Elsevier Science (USA).
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