Glycolic acid production in the engineered yeasts Saccharomyces cerevisiae and Kluyveromyces lactis

Table 2 Glycolic acid yields in Kluyveromyces lactis fed-batch cultivation

	Yield (g g^-1)		Yield (C-mol C-mol^-1)
	95.5 h	167.5 h	95.5 h	167.5 h
Glycolate from ethanol	0.52	0.32	0.31	0.19
Glyoxylate from ethanol	0.28	0.08	0.17	0.05
Glycolate from ethanol and d-xylose	0.44	0.28	0.28	0.18
Glyoxylate from ethanol and d-xylose	0.23	0.07	0.15	0.05
Malate from ethanol and d-xylose	0.005	0.003	0.004	0.002
Acetate from ethanol and d-xylose	0.001	0.000	0.0004	0.0002
CDW from ethanol and d-xylose	0.10	0.06	0.10	0.06
CO₂ from ethanol and d-xylose	0.32	0.21	0.17	0.11
Sum from ethanol and d-xylose	1.10	0.63	0.70	0.39

Yields of glycolate and the main side products from ethanol and d-xylose from the start until two time-points of K. lactis bioreactor fed-batch cultivation.

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