An ellipsometric study of protein adsorption at the saliva-air interface

Holterman, H.J. and 's-Gravenmade, E.J. and Waterman, H.A. and Mellema, J. and Blom, C. (1989) An ellipsometric study of protein adsorption at the saliva-air interface. Journal of Colloid and Interface Science, 128 (2). pp. 523-532. ISSN 0021-9797

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Abstract:	At the liquid-air interface of human saliva a protein layer is adsorbed. From ellipsometric measurements it was found that the thickness of the surface layer ranged from 400 to 3600 Å and the amount of protein material adsorbed was 9–340 mg/m2. Based on the concentration of protein in the layer the samples could be classified into two groups: a low concentration (ca. 0.15 g/ml) and a high concentration (0.7–1.1 g/ml). In the low concentration group the surface layers appeared to be thin (500–600 Å) while those in the high concentration group appeared to be much thicker (1000–3500 Å). A correlation between the bulk pH and the thickness of the surface layer could be established.
Item Type:	Article
Copyright:	© 1989 Elsevier
Link to this item:	http://purl.utwente.nl/publications/70454
Official URL:	http://dx.doi.org/10.1016/0021-9797(89)90367-6
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