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Biopolymer Adsorption, with Special Reference to the Serum Albumin-Polystyrene Latex System

J. Lyklema ; Laboratory for Physical and Colloid Chemistry of the Agricultural University, De Dreijen 6, Wegeningen, Netherlands
W. Norde ; Laboratory for Physical and Colloid Chemistry of the Agricultural University, De Dreijen 6, Wegeningen, Netherlands

Puni tekst: engleski, pdf (19 MB) str. 67-84 preuzimanja: 52* citiraj
APA 6th Edition
Lyklema, J. i Norde, W. (1973). Biopolymer Adsorption, with Special Reference to the Serum Albumin-Polystyrene Latex System. Croatica Chemica Acta, 45 (1), 67-84. Preuzeto s https://hrcak.srce.hr/197047
MLA 8th Edition
Lyklema, J. i W. Norde. "Biopolymer Adsorption, with Special Reference to the Serum Albumin-Polystyrene Latex System." Croatica Chemica Acta, vol. 45, br. 1, 1973, str. 67-84. https://hrcak.srce.hr/197047. Citirano 07.03.2021.
Chicago 17th Edition
Lyklema, J. i W. Norde. "Biopolymer Adsorption, with Special Reference to the Serum Albumin-Polystyrene Latex System." Croatica Chemica Acta 45, br. 1 (1973): 67-84. https://hrcak.srce.hr/197047
Harvard
Lyklema, J., i Norde, W. (1973). 'Biopolymer Adsorption, with Special Reference to the Serum Albumin-Polystyrene Latex System', Croatica Chemica Acta, 45(1), str. 67-84. Preuzeto s: https://hrcak.srce.hr/197047 (Datum pristupa: 07.03.2021.)
Vancouver
Lyklema J, Norde W. Biopolymer Adsorption, with Special Reference to the Serum Albumin-Polystyrene Latex System. Croatica Chemica Acta [Internet]. 1973 [pristupljeno 07.03.2021.];45(1):67-84. Dostupno na: https://hrcak.srce.hr/197047
IEEE
J. Lyklema i W. Norde, "Biopolymer Adsorption, with Special Reference to the Serum Albumin-Polystyrene Latex System", Croatica Chemica Acta, vol.45, br. 1, str. 67-84, 1973. [Online]. Dostupno na: https://hrcak.srce.hr/197047. [Citirano: 07.03.2021.]

Sažetak
A study has been made of the adsorption of human serum
albumin (HSA) on emursifier-free, negatively charged polystyrene
(PS) latices. The adsorption has been followed directly and
microcalorimetrically. Important variables are: pH, temperature,
csalt and the surface charge a0 of the latex.
Although all adsorption isotherms have a platform, the
Langmuir theory is inadequate to account for them. Distinction
must be made between the initial stages of adsorption, solely
determined by the HSA-PS interaction and the later stages, where
lateral interaction between adsorbed HSA molecules plays also an
important role. The adsorption platform as a function of pH is maximal in the isoelectric point. Here the adsorbed amount is roughly compatible
with side-on native HSA molecules. Both below and above the
i. e. p. adsorption proceeds in a more unfolded conformation
but a spread monolayer is never reached.
The adsorption is largely driven by a net entropy gain, both
in the initial and later states of the process. Besides this, there
is a recognizable influence of the electrostatic attraction between
the latex surface and local positive excesses inside the molecule.

Hrčak ID: 197047

URI
https://hrcak.srce.hr/197047

Posjeta: 98 *