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Table 5 Experimental set-up and the amount of sugarsa added at 0 h and with the feedb in the various fermentation experiments

From: Separate hydrolysis and co-fermentation for improved xylose utilization in integrated ethanol production from wheat meal and wheat straw

Feed

Expt Config

Yeast load (g/L)

Feeding

start; stop (h)

Gfeed rate (g/h)

Vfinal (L)

Vfeed

Glucoseadded at 0h

(g)

Xyloseadded at 0h

(g)

Glucosefeed

Xylosefeed

(g)

      

SPWS hydr. (mL)

Starch hydr. (mL)

  

SPWS hydr. (g)

Starch hydr. (g)

 

Glucose (G)

Config. 1G

5

22; 120

0.6

1.2

180e

 

49.6

27.3

56.3f

 

-

 

Config. 2G

5

1; 49

2.2

1.2

180e

 

4.4

27.2

104.7f

 

-

Wheat-

Config. 1

5

5; 80

0.8

1.2

 

180d

31.7

15.4

-

57.0

-

starch

Config. 1

5

5; 80

0.8

1.2

 

180d

31.7

15.4

-

60.6

-

hydrolysate

Config. 1

5c

5; 80

0.7

1.0

 

150d

27.6

13.2

-

50.5

-

 

Config. 1

20

5; 80

0.7

1.0

 

150d

25.3

12.2

-

50.5

-

 

Config. 2

5

1; 49

2.3

1.2

492

180d

4.8

21.5

50.0

57.0

9.8

 

Config. 2

5

1; 49

2.3

1.2

492

180d

4.8

21.5

50.0

60.6

9.8

 

Config. 2

5c

1; 49

1.8

1.0

367

150d

3.4

15.2

35.2

50.5

7.6

 

Config. 2

20

1; 49

1.8

1.0

367

150d

3.4

15.2

35.2

50.5

7.6

  1. aGlucose and xylose
  2. bGlucose, SPWS hydrolysate, and wheat-starch hydrolysate.
  3. cReference for the 20 g/L run with the yeast stored in the refrigerator for two weeks.
  4. dWheat-starch hydrolysate in the feed mixture (17% of Vfinal).
  5. eVolume of glucose solution feed
  6. fGlucose added with the glucose solution feed.
  7. G, glucose.