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Table 1 Experimental conditions, including the amount of sugars added to SSF/SSCF and fermentation (Ferm.)

From: SSF of steam-pretreated wheat straw with the addition of saccharified or fermented wheat meal in integrated bioethanol production

Config.

Process step

Operation mode

 

Strain

WIS SPWS

Liquid added

Feed start-stop

Glucose

Xylose

EtOH

        

SPWS

SWM

WL

FWM

SPWS

FWM

      

At 0 h

 

Solid

Liquid

At 0 h

Feed

At 0 h

Feed

At 0 h

Feed

Solid

Liquid

At 0 h

Feed

     

% of total w

 

h

g

g

g

g

g

g

g

g

g

g

g

g

A,C,D

SSF

Batch

Ref

Dry baker’s yeast

7.5

H2O

-

48.9

4.4

-

-

-

-

-

-

5.6

20.9

-

-

A

SSF

Batch

a, b

7.5

SWM + WL

-

48.9

4.4

52.1

-

17.3

-

-

-

5.6

20.9

-

-

B

SSF

Batch

Ref

8.8

H2O

-

57.4

5.2

-

-

-

-

-

-

6.5

24.5

-

-

B

SSF

Batch

a, b

8.8

SWM

-

57.4

5.2

60.9

-

-

-

-

-

6.5

24.5

-

-

C

Ferm.

Fed-batch

 

-

WL

SWM 8-32

-

-

-

176.0

57.0

-

-

-

-

-

-

-

C

SSF

Batch

a, b

7.5

FWM

-

48.9

4.4

-

-

-

-

7.1

-

5.6

20.9

30.9

-

D

Ferm.

Fed-batch

 

-

SWM + H2O

SWM 8-32

-

-

50.1

129.1

-

-

-

-

-

-

-

-

D

SSF

Fed-batch

 

7.5

-

FWM 24-96

48.9

4.4

-

-

-

-

-

0.0

5.6

20.9

-

25.5

A

SSCF

Batch

 

KE6-12

7.5

SWM

-

48.9

4.4

52.1

-

17.3

-

-

-

5.6

20.9

-

-

A

SSCF

Fed-batch

I

7.5

-

SWM 48-96

48.9

4.4

-

52.1

-

17.3

-

-

5.6

20.9

-

-

A

SSCF

Fed-batch

II

7.5

-

SWM 24-96

48.9

4.4

-

52.1

-

17.3

-

-

5.6

20.9

-

-

  1. The various configurations (Config.) are described in the text.
  2. WIS: water-insoluble solids, SPWS: steam-pretreated wheat straw, SWM: saccharified wheat meal, FWM: fermented wheat meal, WL: washing liquid, EtOH: ethanol. Ref: reference experiments were performed with addition of water.
  3. a, b: experiments performed in duplicate.