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Table 2 Maximal adsorption, affinity constant (K) and area per adsorbed BSA molecule on silica (0.1 mg/ml) or on DODAB covered silica particles in two different media

From: Silica-based cationic bilayers as immunoadjuvants

Particles

Maximal adsorption

(molecules m-2)

Affinity Constant

(K, M-1)

Area per adsorbed molecule

(nm2)

SiO2/BSA(i)

4.14 × 1016

1.19 × 109

24.15

SiO2/BSA(ii)

4.75 × 1016

8.19 × 107

21.05

SiO2/DODAB/BSA(i)

7.20 × 1016

5.18 × 107

13.88

SiO2/DODAB/BSA(ii)

3.22 × 1017

8.98 × 108

3.10

SiO2/18 kDa-hsp(ii)

1.12 × 1017

-

-

SiO2/DODAB/18 kDa-hsp(ii)

10.00 × 1017

-

-

  1. (i) 1 mM NaCl (pH 6.3).
  2. (ii) 5 mM Tris.HCl (pH 7.4).
  3. Final DODAB concentration was 0.05 mM.