Fig. 4. Mevalonate accumulation in lycopene and β-carotene producing E. coli strains at 24 h and 48 h.
Data are shown as average ± SD of three biological replicates. Asterisks indicate statistical significance as follows: * (p ≤ 0.05), ** (p ≤ 0.01), and *** (p ≤ 0.001), when compared to the pSNA-harboring strain in each panel.