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Table 2 Butyl acetate production using different E. coli strains

From: Metabolic engineering of Escherichia coli for efficient biosynthesis of butyl acetate

Strain

Genes expressed

 

Acetate esters (g/L)

By-products (g/L)

Glucose

consumption

(g/L)

Cell optical

density (OD600)

Butanol

biosynthesis

ATF1

fdh

Promoter used

Butyl acetate

Ethyl acetate

Ethanol

Butanol

Acetate

Pyruvate

Formate

YA1

O

 

O

LlacO1

0 ± 0

n.d.

0.05 ± 0.01

1.8 ± 0.2

0.92 ± 0.08

1.6 ± 0.3

0 ± 0

9.7 ± 0.8

2.0 ± 0.2

YA2

O

O

O

LlacO1

0.39 ± 0.1

n.d.

0.05 ± 0.01

0.42 ± 0.05

1.02 ± 0.03

0.50 ± 0.08

0.38 ± 0.02

8.0 ± 0.4

0.87 ± 0.05

YA3

O

O

 

LlacO1

1.4 ± 0.1

n.d.

0.12 ± 0.01

0.33 ± 0.02

1.28 ± 0.04

1.4 ± 0.2

0.59 ± 0.19

12 ± 0.4

1.3 ± 0.1

YA5

O

O

 

FRE

1.5 ± 0.1

n.d.

0.18 ± 0.01

0.53 ± 0.04

1.42 ± 0.03

1.8 ± 0.2

0.63 ± 0.06

13 ± 0.1

1.5 ± 0.1

  1. n.d. not detected
  2. *FRE represents promoters of native E. coli fermentative genes. See Table 1 for detailed plasmid used