Fig. 6 | Nature Communications

Fig. 6

From: Multidimensional heuristic process for high-yield production of astaxanthin and fragrance molecules in Escherichia coli

Fig. 6

Identification of extracellular carotenoids for screening. a Correlation between the medium absorbance at 515 nm (A515) and intracellular carotenoid concentration or cell density (OD600). Among them, astaxanthin concentration was most strongly correlated with the medium absorbance. b The astaxanthin titers and cell density of the two strains, E and F, identified using the medium absorbance as the screening indicator. Error bars, mean ± s.d., n = 3. c The HPLC chromatograms of carotenoids produced in the strains E and F

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