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Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2011 by Universidad Católica de Valparaíso -- Chile
Vol. 14 No. 2, Issue of April 15, 2011
 

Table 6. Chemical composition of alkaline pre-treated (40 g L-1 NaOH) CS (1:10 v/v ratio, CS:alkali solution) at different EE [1.6 U xylanase activity (g dry ACS)-1] contact times (ACS moisture content = 800 g kg-1).



Contact time (hrs)

NDF
(weight %)c

ADF
(weight %)d

H
(weight %)e

C
(weight %)f

L
(weight %)g

0

70 ± 0.5a

47 ± 0.3a

21.8 ± 0.5a

36.5 ± 0.5a

5.5 ± 0.04a

4

69 ± 0.6a

47 ± 0.2a

21.6 ± 0.8a

35.4 ± 0.5a

5.5 ± 0.04a

8

67 ± 0.5b

46 ± 0.2a

19.2 ± 0.1b

33 ± 0.2b

4.7 ± 0.05b

12

67 ± 0.3b

47 ± 0.3a

19.8 ± 0.5b

32.8 ± 0.5b

4.7 ± 0.05b

cNDF = Neutral detergent fiber. dADF = Acid detergent fiber. eH = Hemicellulose. fC = Cellulose. gL = Lignin. Values represent mean of three independent experiments ± standard deviation. Different letters in same column indicate significant differences at P < 0.05.