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Figure 7 | Biotechnology for Biofuels

Figure 7

From: Selective suppression of bacterial contaminants by process conditions during lignocellulose based yeast fermentations

Figure 7

Viability of yeast (upper panels) and bacteria (lower panels) during incubation in lignocellulosic medium with and without addition of ethanol and NaCl. Lignocellulosic dilute acid spruce hydrolysate medium was inoculated with a mixture of the yeast Saccharomyces cerevisiae and the bacteria Lactobacillus buchneri, Lactobacillus plantarum, Acetobacter syzygii and Acetobacter tropicalis. Viability was measured without additions (filled stars, filled squares) and with addition of 40 g/l of ethanol and 25 g/l of NaCl (open stars, open squares) or 20 g/l of ethanol and 50 g/l of NaCl (open diamonds, open circles). Results from two independent bioreactor cultures are shown.

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