Abstract
Adsorption of bovine serum albumin onto positively and negatively charged particles, microcapsules, was examined in view of electrical interactions. The overall adsorption profiles were governed by the sign of net charge of the protein and the adsorbent, but in the immediate vicinity of the microcapsule surface it was suggested that the charge balance could affect the adsorption and the molecular structure of BSA. The amount of adsorption was smallest on the surface which has an isoelectric point similar to that of BSA, indicating again the important role in adsorption of the charge balance for both BSA molecules and the adsorbent surface.
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