2011 International Conference on Alternative Energy in Developing Countries and Emerging Economies
- 67 -
V. C
ONCLUSIONS
Acacia auriculiformis Cunn.
’s leaves contained
cellulose and lignin at 48.9±7.6% and 44.3±0.6%,
respectively. However, after treated with 2% (NH
4
)
2
SO
4
for 24 h in supplemented with stream autoclave (121
o
C,
15 min), giving highest content of cellulose (93.1±0.4%)
while lignin content decreased significantly (6.4±1.2%).
The highest sugar production at 6.7 g/L was achieved
from the optimal condition containing 30 g leaves/L with
0.17 mg cellulase/mL for 16 h of incubation. Glucose was
identified as a major sugar component in cellulosic
hydrolyzate using HPLC analysis. The ethanol
production from pretreated leaves using
S. cerevisiae
in
both SHF and SSF process was 1.06 and 1.18 g/L,
respectively.
A
CKNOWLEDGMENT
This work was supported by Department of Chemistry
and Research and Development Institute, Thaksin
University.
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