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Adsorption characteristics of various proteins to a titanium surface

Paper ID Volume ID Publish Year Pages File Format Full-Text
22299 43267 2008 6 PDF Available
Title
Adsorption characteristics of various proteins to a titanium surface
Abstract

Adsorption characteristics of 18 proteins, with different sizes and isoelectric points, to a titanium oxide surface were studied. The adsorption isotherms were categorized based on protein type and pH: type 1, irreversible adsorption; type 2, Langmuir-type reversible adsorption; and type 3, reversible and irreversible adsorption. Most of the proteins tested were irreversibly adsorbed in the pH range of 3–8, whereas most adsorbed reversibly at pH 8.5–9.4. Protamine, with a pI value of 12, adsorbed reversibly in the pH range of 3–9. pH values that gave maximal sums of irreversibly and reversibly adsorbed proteins were in the pH range of 3–8 and tended to increase slightly with the pI value of the corresponding protein. pH values that gave maximal quantities of irreversibly adsorbed protein ranged between 4–6 and were nearly independent of pI.

Keywords
adsorption; titanium surface; isotherms; isoelectric point; irreversible adsorption
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 106, Issue 3, September 2008, Pages 273–278
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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