Table 1.

Stability parameters for soluble compounds in the HS and LS sets of reactors

ParameterReactorsGlucoseLactateButyrateAcetatePropionate
Resistance (% of ee of total glucose added)HS-6, -7, -82.6, 6.6, 3.729, 37, 2814, 21, 265.7, 5.1, 5.0
HS mean ± SD(4.3 ± 2.1)31 ± 4.920 ± 6.05.3 ± 0.38
LS-1, -2, -368, 60, 5853, 58, 5034, 31, 335.5, 4.1, 8.4
LS mean ± SD62 ± 5.3 (0.003)a 54 ± 4.0 (0.009)33 ± 1.5 (0.075)6.0 ± 2.2 (0.626)
Resilience (days)HS-6, -7, -80.63, 0.83, 0.830.65, 0.92, 0.928, 10, 1013, 16, 1416, 20, 18
HS mean ± SD0.76 ± 0.12 (0.010)0.83 ± 0.169.3 ± 1.214 ± 1.518 ± 2.0
LS-1, -2, -30.25, 0.38, 0.330.26, 0.42, 0.4216, 16, 1626, 24, 2632, 35, 35
LS mean ± SD0.32 ± 0.070.37 ± 0.09 (0.021)16 ± 0.0 (0.010)25 ± 1.2 (0.002)34 ± 1.7 (0.002)
Reactivity (% ee · day−1)HS-6, -7, -812, 23, 1671, 102, 8131, 27, 322.7, 2.2, 1.7
HS mean ± SD17 ± 5.685 ± 1630 ± 2.72.2 ± 0.50
LS-1, -2, -3256, 221, 18141, 42, 523.1, 2.0, 2.04.5, 1.6, 12
LS mean ± SD219 ± 38 (0.012)45 ± 6.1 (0.056)2.4 ± 0.64 (0.003)6.0 ± 5.4 (0.343)
Declivity (% ee · day−1)HS-6, -7, -8155, 120, 1201.9, 6.0, 3.44.2, 4.1, 3.21.2, 1.4, 2.00.95, 0.85, 0.50
HS mean ± SD132 ± 203.8 ± 2.13.8 ± 0.551.5 ± 0.420.77 ± 0.24
LS-1, -2, -3385, 240, 24039, 38, 373.8, 4.1, 3.42.6, 2.6, 3.00.92, 0.32, 0.76
LS mean ± SD288 ± 84 (0.088)38 ± 1.0 (0.002)3.8 ± 0.35 (0.871)2.7 ± 0.23 (0.022)0.67 ± 0.31 (0.687)
Stability (% ee · day2)b HS-6, -7, -812, 22, 231.1, 6.6, 3.0383, 819, 6171,078, 1,424, 1,118406, 552, 540
HS mean ± SD19 ± 6.13.6 ± 2.8606 ± 2181,207 ± 189499 ± 81
LS-1, -2, -35.3, 5.3, 3.042, 55, 251,412, 1,750, 1,5445,981, 4,825, 5,8632,111, 1,819, 4,446
LS mean ± SD4.5 ± 1.3 (0.057)41 ± 15 (0.052)1,569 ± 170 (0.009)5,556 ± 636 (0.008)2,792 ± 1,440 (0.110)
  • a The values in parentheses are theP values for 95% confidence intervals for two-samplet tests conducted on the corresponding stability parameters for the two reactor sets. A P value less than 0.05 implies that the difference in the means for the two sets was significant at the 95% confidence interval.

  • b The total soluble compound stability for the HS set was 2,335% ± 473% ee · day2, and the total soluble compound stability for the LS set was 9,962% ± 1,750% ee · day2 (P = 0.018).