Isolation of a genetically accessible thermophilic xylan degrading bacterium from compost

Table 3 Overview of fermentations of G. thermodenitrificans T12 on glucose, xylose and glucose/xylose mixtures

Media	Substrate	Time (h)	Cons. (g)	Cons. rate (g/L/h)	Lactic acid production (g)	Lactic acid productivity	Lactic acid yield	Lactic acid yield
Media	Substrate	Time (h)	Cons. (g)	Cons. rate (g/L/h)	Lactic acid production (g)	(g/L/h)	(g product/g substrate consumed)	(% of theoretical yield)
MMy	30 g/L glucose	25.2	9.43	0.37	3.10	0.12	0.33	10.3
MMy	30 g/L xylose	25	6.93	0.28	3.83	0.15	0.55	12.8
MMy	20 g/L glucose + 10 g/L xylose	54.95	19.87 glucose 6.55 xylose	0.33 glucose 0.11 xylose	17.93	0.30	0.69	59.8
MMy+	30 g/L glucose	27	11.35	0.41	8.48	0.30	0.74	28.3
MMy+	30 g/L xylose	27	15.23	0.54	8.73	0.31	0.57	29.1
MMy+	20 g/L glucose + 10 g/L xylose	25	14.51 glucose 7.05 xylose	0.50 glucose 0.24 xylose	20.27	0.71	0.94	67.6

Fermentations were carried out at pH 7.0 at 150 rpm. Fermentations started with a 0.5 L air headspace without additional sparging. MMy media contained 0.5 g/L of yeast extract, whereas MMy+ media contained 5 g/L of yeast extract

ISSN: 2731-3654