Interfacial properties of whey proteins at air/water and oil/water interfaces studied by dynamic drop tensiometry, ellipsometry and spreading kinetics

被引：24

作者：

Nylander, T

Hamraoui, A

Paulsson, M

机构：

[1] Lund Univ, Dept Phys Chem 1, SE-22100 Lund, Sweden

[2] Lund Univ, Dept Food Technol, SE-22100 Lund, Sweden

来源：

INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY | 1999年 / 34卷 / 5-6期

关键词：

air/water; beta-lactoglobulin; ellipsometry; oil/water; surface rheology; surface tension; wetting; whey protein concentrate; whey protein isolate;

D O I：

10.1046/j.1365-2621.1999.00327.x

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

The behaviour of different whey protein preparations at the air/aqueous and oil/aqueous interfaces have been investigated by surface tension measurements and ellipsometry, respectively. The results are discussed in relation to the composition of the different samples. For the ellipsometry measurement at the oil-aqueous interface, a new methodology has been developed and it will be discussed in relation to the experimental results. The surface viscoelastic properties of protein films formed at the air/aqueous interface have also been determined. Further information about the dynamics of the proteins at the interfaces was obtained by studying the kinetics of spreading of an oil droplet on the protein solutions.

引用

页码：573 / 585

页数：13

共 32 条

[21] MEASUREMEMT OF THICKNESS AND REFRACTIVE INDEX OF VERY THIN FILMS AND OPTICAL PROPERTIES OF SURFACES BY ELLIPSOMETRY [J].