Table 2. List of de-regulated tentatively annotated metabolites in the cell extract.

Metabolites have been assigned HMBD tags and have been grouped according to their biological functions. Quantitative changes after AuNPs treatment (5 nm AuNPs versus Ctrl and 30 nm AuNPs versus Ctrl) are reported (log 2-fold change) for individual metabolites. Log 2 = 0.58, thus the range was set from –0.58 to 0.58 and color-coded. Green for < –0.58, black ▪ for 0 and red for > 0.58. The values in between are shown as color gradients. (For color table refer to the online version.)