Table 1 Dry biomass (g L^-1) and RP production (CV mL^-1 culture filtrate) of the isolated mutant strains grown for ten successive generations

9.37 ± 0.12^a

1.52 ± 0.98^a

8.18 ± 0.18^a

1.71 ± 0.11^c

9.68 ± 0.56^b

5.32 ± 0.14^a

9.36 ± 0.32^a

2.32 ± 1.09^a

10.22 ± 0.82^a

1.48 ± 1.08^a

9.76 ± 0.82^a

3.30 ± 0.83^a

9.11 ± 0.19^a

1.03 ± 0.19^a

7.96 ± 0.43^a

1.33 ± 0.05 ^cd

9.49 ± 0.12^a

5.18 ± 0.09^a

9.41 ± 0.51^a

0.87 ± 1.09^b

9.98 ± 0.39^a

0.98 ± 0.07^ab

9.62 ± 0.71^a

2.41 ± 0.41^b

9.65 ± 0.48^a

0.95 ± 0.03^ab

8.01 ± 0.18^a

1.04 ± 0.04 ^cd

9.37 ± 0.75^a

5.42 ± 0.11^a

9.52 ± 0.34^a

0.92 ± 1.09^b

10.10 ± 0.91^a

0.92 ± 0.07^ab

8.99 ± 0.44^a

2.56 ± 0.91^b

9.56 ± 0.21^a

0.89 ± 0.09^ab

7.98 ± 0.21^a

2.47 ± 0.16^b

9.68 ± 0.70^a

5.51 ± 0.09^a

9.38 ± 0.47^a

0.79 ± 1.09^b

10.02 ± 0.82^a

1.01 ± 0.21^ab

8.82 ± 0.82^a

3.78 ± 0.76^a

9.44 ± 0.72^a

0.93 ± 0.11^ab

8.31 ± 0.28^a

1.01 ± 0.04^d

9.24 ± 0.85^a

5.37 ± 0.08^a

9.49 ± 0.71^a

0.56 ± 1.09^b

10.11 ± 0.75^a

0.85 ± 0.55^b

9.39 ± 0.39^a

1.22 ± 0.52^c

9.76 ± 0.37^a

0.75 ± 0.03^ab

8.21 ± 0.16^a

3.00 ± 0.17^a

9.71 ± 0.71^a

5.76 ± 0.10^a

9.30 ± 0.41^a

0.59 ± 1.09^b

9.87 ± 0.92^a

0.42 ± 0.01^c

9.46 ± 0.76^a

1.00 ± 0.11^c

9.92 ± 0.63^a

0.53 ± 0.10^b

8.33 ± 0.36^a

1.21 ± 0.09 ^cd

9.51 ± 0.32^a

5.59 ± 0.14^a

9.43 ± 0.67^a

0.61 ± 1.09^b

10.05 ± 0.78^a

0.57 ± 0.01^c

9.59 ± 0.31^a

1.21 ± 0.18^c

9.52 ± 0.48^a

0.57 ± 0.04^b

8.87 ± 0.41^a

0.89 ± 0.03^d

9.63 ± 0.87^a

5.38 ± 0.09^a

8.99 ± 0.98^a

0.58 ± 1.09^b

10.21 ± 0.18^a

0.56 ± 0.04^c

9.81 ± 0.19^a

0.56 ± 0.08^d

9.31 ± 0.11^a

0.55 ± 0.03^b

8.00 ± 0.21^a

0.76 ± 0.01^d

9.77 ± 0.89^a

5.41 ± 0.08^a

9.81 ± 0.31^a

0.71 ± 1.09^b

10.31 ± 0.76^a

0.57 ± 0.02^c

9.77 ± 0.45^a

0.58 ± 0.01^d

9.56 ± 0.37^a

0.53 ± 0.07^b

8.34 ± 0.36^a

0.84 ± 0.09^d

9.65 ± 0.55^a

5.41 ± 0.11^a

9.55 ± 0.71^a

0.59 ± 1.09^b

10.19 ± 0.82^a

0.55 ± 0.03^c

9.08 ± 0.39^a

0.57 ± 0.06^d