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Table 2 Parameters assessed by isothermal titration calorimetry (ITC) for EPS extracted from S. mutans strains using different carbohydrate source

From: Effect of divalent ions on cariogenic biofilm formation

Carbohydrate Titration agent S. mutans ATCC 25175
k ΔH1 (kJ/mol) ΔG1 (kJ/mol) ΔS1 (J/(k x mol))
Glucose CaCl2 3.7x103 (±5.0x102) −58.5 (±3.6) −20.3 −127.9
Sucrose 3.1x103 (±7.9x102) −58 (±14) −19.9 − 126.4
Fructose 9.2x103 (±1.7x103) −25.6 (±1.2) −22.6 −9.9
Glucose MgCl2 7.9x103 (±1.5x103) −43.6 (±2.6) −22.2 −71.8
Sucrose 5.3x103 (±2.3x103) 7.8 (±1.4) −21.5 97.1
Fructose 1.9x103 (±1.3x103) 22 (±40) −19.0 137.6
Glucose ZnCl2 1.4x104 (±0.72x104) 16 (± 2.8) −23.9 133.2
Sucrose 3.9x103 (±0.71x103) 17 (±12) −20.7 220.9
Fructose 3.6x103 (±0.66x103) 31 (±5.6) −20.5 172.1
Carbohydrate Titration agent S. mutans CI
k ΔH1 (kJ/mol) ΔG1 (kJ/mol) ΔS1 (J/(k x mol))
Glucose CaCl2 1.1x104 (±3.2x103) −29.0 (±2.0) −23.2 −19.6
Sucrose 4.9x104 (±2.0x103) 4.78 (±0.20) −26.8 105.9
Fructose 1.2x104 (±2.2x103) −6.0 (±0.25) −24.2 58.6
Glucose MgCl2 1.4x104 (±0.44x104) 9.5 (±0.73) −23.9 110.9
Sucrose 1.5x104 (±0.91x104) 4.4 (±0.65) −24.1 94.9
Fructose 1.7x104 (±1.4x104) 6.2 (±1.5) −24.4 101.7
Glucose ZnCl2 4.8x103 (±0.79x103) 42 (±6.3) −21.2 209.2
Sucrose 4.2x103 (±1.1x103) 34 (±4.8) −20.9 182.8
Fructose 4.8x103 (±0.79x103) 42 (±6.3) −21.2 209.2
  Titration agent Dextran
k ΔH1 (kJ/mol) ΔG1 (kJ/mol) ΔS1 (J/(k x mol))
  CaCl2 2.6x104 (±7.3x103) 5.60 (±0.21) −25.2 102.2
  MgCl2 3.2x104 (±8.6x103) 8.29 (±0.28) −25.9 113.7
  ZnCl2 2.1x104 (±5.2x103) 5.99 (±0.25) −24.7 102.9