Time (h) Bacterial growth in  Pseudomonas
Broth
Bacterial growth in 4X phenolics + salts Bacterial growth in 4X catechol + salts Bacterial growth in 4X m-cresol + salts Bacterial growth in salts alone
O.D550* O.D550* O.D550* O.D550* O.D550*
0 0.31 ± 0.06 0.30 ± 0.05 0.30 ± 0.05 0.29 ± 0.05 0.27 ± 0.01
24 1.10 ± 0.21 0.50 ± 0.03 0.59 ± 0.03 0.50 ± 0.02 0.27 ± 0.02
48 1.65 ± 0.35 1.00 ± 0.29 1.20 ± 0.23 0.90 ± 0.07 0.25 ± 0.01
72 1.40 ± 0.28 0.85 ± 0.34 1.00 ± 0.29 0.61 ± 0.02 0.24 ± 0.03
*O.D. values are given as the statistical mean of the three independent experiments carried out using triplicate tubes
Table 8: Utilization effi ciency of the test phenolics namely catechol and m-cresol as a carbon source by SM1 strain.