Bioethanol Production from Sugarcane Bagasse by a Novel Brazilian Pentose Fermenting Yeast Scheffersomyces shehatae UFMG-HM 52.2: Evaluation of Fermentation Medium

Figure 3

Fermentation of SBHH (sugarcane bagasse hemicellulosic hydrolysate) supplemented with different nutritional components using yeast Scheffersomyces shehatae UFMG-HM 52.2. Medium #A: 5 g/L ammonium sulfate, 3 g/L yeast extract, 3 g/L of malt extract [13]; medium #B: 5 g/L peptone, 3 g/L yeast extract, 3 g/L malt extract [13]; medium #C: 1.73 g/L ammonium sulfate, 3.56 g/L potassium phosphate monobasic, 2.62 g/L yeast extract [14]; medium #D: 3 g/L yeast extract, 0.25 g/L of urea, 0.25 g/L calcium chloride, 0.25 g/L magnesium sulfate, 2.5 g/L potassium phosphate monobasic [15]. In all media, the nutrients were added to detoxified hemicellulosic sugarcane bagasse hydrolysate, used as sole carbon source.