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Table 1 Effect of different carbon sources, nitrogen sources, and cations on the production of the EPS from P. fluorescens mutant T4-2

From: Hyperproduction of extracellular polymeric substance in Pseudomonas fluorescens for efficient chromium (VI) absorption

Carbon source

FA ± SD (U/mL)

OD600

Nitrogen source

FA ± SD (U/mL)

OD600

Cation

FA ± SD (U/mL)

OD600

Sucrose

519.5 ± 21.1

4.00 ± 0.01

Urea

36.1 ± 13.3

0.68 ± 0.04

Mg2+

1264.1 ± 26.4

3.56 ± 0.13

Fructose

243.5 ± 9.9

4.69 ± 0.02

NaNO3

26.5 ± 5.1

0.50 ± 0.04

Ca2+

1257.5 ± 15.1

4.20 ± 0.12

Glucose

583.7 ± 5.1

5.23 ± 0.06

NH4Cl

179.8 ± 35.2

3.73 ± 0.02

Mn2+

1285.1 ± 12.4

4.22 ± 0.09

Glycerol

26.1 ± 6.6

3.12 ± 0.12

Yeast extract

31.4 ± 4.4

1.84 ± 0.21

K+

623.4 ± 19.1

4.26 ± 0.02

Lactose

274.4 ± 7.3

4.38 ± 0.15

Tryptone

151.3 ± 21.7

3.00 ± 0.09

Fe3+

0 ± 0

3.32 ± 0.13

Maltose

259.3 ± 19.6

4.62 ± 0.04

Beef extract

201.5 ± 32.1

2.26 ± 0.15

Al3+

618.4 ± 20.0

4.33 ± 0.21

Xylose

256.5 ± 17.4

4.53 ± 0.04

Soy flour

56.7 ± 7.4

1.09 ± 0.14

Zn2+

32.5 ± 3.1

2.97 ± 0.24

Sodium citrate

229.5 ± 23.0

4.83 ± 0.04

Mixed nitrogen

593.7 ± 5.1

4.91 ± 0.09

Cu2+

2.7 ± 1.8

0.18 ± 0.02

  1. FA: flocculating activity, SD: standard deviation, mixed nitrogen: [yeast extract + urea]