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Table 1 pH-dependent adsorption efficiency with 1 × 10 10 spores

From: Adsorption of β-galactosidase of Alicyclobacillus acidocaldarius on wild type and mutants spores of Bacillus subtilis

pH values of the adsorption reaction
  3.0 3.5 4.0 4.5
Total units (%) 0 262.55 ± 5.15 (100) 308.92 ± 11.13 (100) 353.64 ± 23.80 (100)
Spore-bound units (%) 0 139.64 ± 5.65 (53.18) 158.98 ± 2.41 (51.46) 26.89 ± 4.68 (7.60)
Unbound-units (%) 0 92.46 ± 8.24 (35.21) 127.77 ± 12.38 (41.36) 306.72 ± 26.96 (86.73)
  1. 1β-galactosidase unit is defined as an amount of β-Gal which is able to hydrolyze 1 μmol of substrate in 1 min at standard conditions [19].