Fig. 5

Photothermal protein production. A Toxicity effect of different concentrations of AuNPs on Escherichia coli cDH5α. B Optical density growth curves of Escherichia coli cDH5α under the following growth conditions; GC 1 presence of AuNPs and in the presence of LED light illumination; GC 2 in the absence of AuNPs and in the presence of LED light illumination; GC 3 in the presence of AuNPs and in the absence of LED light illumination; GC 4 in the absence of AuNPs and in the absence of LED light illumination. C Normalized Relative fluorescence units (RFU) of the mCherry proteins produced after 3 h growth under the different growth conditions (GC 1, GC 2, GC 3 and GC 4) in the Escherichia coli DH5α cloned with the mCherry producing plasmid. Data are expressed as mean ± SEM, n = 3 well; *P \(<\) 0.05 and **P \(<\) 0.01 vs. S1