Fig 2. Sensitivity of ethanol production on the PhPP of S. stipitis.

${\lambda }_{ARC}^{etoh}$: Sensitivity of q_etoh to the Available Reducing Capacity (ARC). Planes are colored according to ${\lambda }_{ARC}^{etoh}$ value, indicating if ARC is limiting (${\lambda }_{ARC}^{etoh}<0$), is in excess (${\lambda }_{ARC}^{etoh}>0$) or it has no effect on q_etoh. (a) PhPP for the growth rate (μ) using glucose. (b) PhPP for the growth rate (μ) using xylose. (c) PhPP for the specific productivity of ethanol (q_etoh) using xylose. (d) PhPP for the yield of ethanol from xylose (Y_etoh).