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Table 2 Growth of bacterial strains on agar plates with 2 g/L depolymerized lignin in M9 medium

From: RETRACTED ARTICLE: Bacterial conversion of depolymerized Kraft lignin

Organisms 5 mL/min 10 mL/min No. of ‘+’ for each organism
190 °C 220 °C 240 °C 190 °C 220 °C 240 °C
1 2 1 2 1 2 1 2 1 2 1 2
R. opacus + + + + + + + + + + + + 12
R. erythropolis + + + + + 6
P. fluorescens + + + + + + + + 8
P. putida KT2440 + + + 3
P. putida EM42 + + + + + 5
Isolate B + + + + + 5
Isolate C + + + + + + 6
Isolate 9.1 + + + + 4
Isolate 19 + + + + 4
No. of species showing growth on depolymerized lignin with different severities 4 7 8 8 8 4  
  1. The lignin used was depolymerized with two different flow rates (5 and 10 mL/min) and three different severities (190, 220, 240 °C) for each flow rate. The plates were incubated for 3 weeks at 30 °C. The isolates were previously tentatively reported as Pseudomonas sp. (B); P. plecoglossicida (C); P. deceptionensis (9.1); and Rhodococcus erythropolis (19). Biological duplicates are indicated as 1 and 2. (+ growth; − no growth)