Fig. 2
The GC/MS result of PAA from the extract of the recombinant strain MG1655/pDG8 and MG1655/pDG9 in shake flasks for 28 h. Identified substances: 1 phenethyl alcohol; 2 benzoic acid (used as internal standard, 40 mg/L); 3 phenylacetic acid (PAA)