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. 2018 Feb 13;8(2):126. doi: 10.1007/s13205-018-1161-y

Table 4.

Kinetic parameters of ethanol production from SSJ at various initial pH values using thermotolerant yeast K. marxainus DBKKUY-103 at 37 and 40 °C

pH	37 °C				40 °C
pH	P (g/l)	Q_p (g/l.h)	Y_p/s (g/g)	E_y (%)	P (g/l)	Q_p (g/l.h)	Y_p/s (g/g)	E_y (%)
4.0	69.52 ± 0.11^b	0.97 ± 0.01^b	0.51 ± 0.01^b	94.45 ± 0.65^b	57.79 ± 0.50^a	1.20 ± 0.01^b	0.50 ± 0.02^b	92.52 ± 0.81^b
4.5	69.20 ± 1.01^b	0.96 ± 0.01^b	0.52 ± 0.01^b	96.30 ± 1.41^b	59.01 ± 1.01^ab	1.23 ± 0.02^bc	0.48 ± 0.04^a	88.87 ± 1.51^a
5.0	71.20 ± 1.56^b	0.99 ± 0.02^b	0.52 ± 0.01^b	96.30 ± 1.12^b	60.00 ± 0.18^b	1.25 ± 0.02^c	0.48 ± 0.02^a	88.88 ± 0.26^a
5.5	65.57 ± 0.89^a	0.91 ± 0.01^a	0.50 ± 0.01^a	92.59 ± 1.01^a	61.46 ± 0.11^c	1.28 ± 0.02^c	0.48 ± 0.02^a	88.89 ± 0.05^a
6.0	64.46 ± 0.11^a	0.90 ± 0.01^a	0.52 ± 0.02^b	96.29 ± 1.17^b	58.07 ± 0.34^a	0.81 ± 0.02^a	0.48 ± 0.03^a	88.85 ± 0.03^a

Mean values with different letters in the same column are significantly different at p < 0.05 based on DMRT analysis

P ethanol concentration, Q_p volumetric ethanol productivity, Y_p/s ethanol yield, E_y ethanol fermentation efficiency