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. 2020 May 3;13(4):1273–1283. doi: 10.1111/1751-7915.13574

Table 1.

Parameters determined in the cultures with Pseudomonas putida EM42 resting cells and in the cultures with P. putida EM42 or P. putida EM42 pSEVA2213_bglC grown on d‐glucose or d‐cellobiose, respectively, and transforming d‐xylose to d‐xylonate.

P. putida strain and culture conditions μ (h−1) e Xylonate yield (g g−1 xylose) Xylonate productivity (mg l−1 h−1) CDW (g) pH
EM42 resting cells opt a n.a. 0.56 ± 0.06/0.85 ± 0.06 217 ± 15/164 ± 11 0.15 ± 0.01/0.16 ± 0.01 6.30 ± 0.01/5.99 ± 0.08

EM42

glucose

0.58 ± 0.02 0.18 ± 0.02/0.17 ± 0.03 69 ± 6/32 ± 6 1.73 ± 0.12/1.60 ± 0.06 6.26 ± 0.01/5.81 ± 0.03
bglC+ EM42 cellobiose 0.27 ± 0.03 0.30 ± 0.06/0.48 ± 0.09 114 ± 18/93 ± 13 1.46 ± 0.13/1.88 ± 0.05 6.16 ± 0.06/5.19 ± 0.03
bglC+ EM42 cellobiose optA b 0.28 ± 0.05 0.34 ± 0.05/0.54 ± 0.10 138 ± 21/107 ± 17 2.06 ± 0.07/1.85 ± 0.03 6.23 ± 0.07/5.88 ± 0.05
bglC+ EM42 cellobiose optB c 0.30 ± 0.02 0.35 ± 0.02/0.50 ± 0.01 144 ± 8/102 ± 3 2.41 ± 0.11/2.18 ± 0.07 6.27 ± 0.08/6.00 ± 0.04
bglC+ EM42 cellobiose PHA d 0.24 ± 0.01 0.41 ± 0.09/0.52 ± 0.08 156 ± 32/99 ± 13 0.86 ± 0.02/1.24 ± 0.14 6.24 ± 0.02/5.90 ± 0.01

Values represent the mean ± standard deviation of three biological replicates. Parameters (except for μ) were determined after 24 h/48 h of the culture. CDW, cell dry weight; n.a., not applicable.

a

Resting cells, pre‐cultured in LB medium, were incubated in flasks with M9 minimal medium buffered with 100 mM sodium phosphate buffer and shaken at 300 r.p.m.

b

Cultures, inoculated from pre‐cultures grown in LB medium, were carried out in flasks with M9 minimal medium buffered with 100 mM sodium phosphate buffer and shaken at 300 r.p.m.

c

Cultures, inoculated from pre‐cultures grown in M9 medium with d‐cellobiose, were carried out in flasks with M9 minimal medium buffered with 100 mM sodium phosphate buffer and shaken at 300 r.p.m.

d

Cultures were carried out in flasks with M9 minimal medium with reduced content of nitrogen, buffered with 100 mM sodium phosphate buffer and shaken at 300 r.p.m.

e

The specific growth rate (μ) was determined during exponential growth.