OMWsIn the shake-flask trials (TS0∼ 100 g L−1; OMWs added in variousamounts) performed under non-aseptic conditions, DCW produc-tion (expressed as Xmaxand YX/TS) was not significantly reducedby the addition of phenolic compounds (OMW) into the dilutedmolasses-based media (Table 1). The highest Xmaxand YX/TSvalueswere presented at the control (without OMW addition) exper-iment (Table 1). The values of total sugars concentration thatremained unconsumed (TSf= 5.1–18.3 g L−1; ∼70 h after inocula-tion) rose proportionally to the addition of OMWs indicating thatthe increasing presence of inhibitors of the effluent into the dilutedmolasses-based media negatively affected the metabolism of thestrain. A representative kinetics is shown in Fig. 2a and b. Additionof OMWs at a ratio of 20% (v/v), gave satisfactory results as regardsthe production of both yeast biomass and ethanol in shake-flaskcultures of S. cerevisiae.