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- Title
Overliming Effects on Xylitol Production from Sago Trunk Hydrolysate.
- Authors
Mohamad, N. L.; Mustapa Kamal, S. M.; Abdullah, A. G. L.
- Abstract
Xylitol can be obtained from lignocellulosic materials containing xylose. However, the fraction of lignoeellulose converted through dilute acid hydrolysis contains compounds that inhibit the fermenting micro-organisms. These inhibitors can be removed from the hydrolysate by detoxification method, prior to fermentation. This study describes effectiveness of overliming process to reduce the toxicity of hydrolysates generated from pre-treatment of sago trunk for xylitol production. The overliming pH 9 and 10 was studied and the results showed that pH 9 was showed 20% of sugar loss, which is low compared to pH 10. Candida tropicalis strain was used to evaluate the fermentability of overlimed sago trunk hydrolysate at pH 9 and non-overlimed hydrolysate medium. Meanwhile, Xylitol accumulation and productivity in the overlimed medium was found to be higher than the non-treated medium. The maximum production of xylitol was increased up to 74% and converted within 76 h. The results obtained improved the fermentation process when compared with the non-treated medium.
- Subjects
XYLITOL; ORGANIC synthesis; SAGO palms; LIME (Minerals); LIGNOCELLULOSE; HYDROLYSIS; MONOSACCHARIDES; FERMENTATION
- Publication
Pertanika Journal of Science & Technology, 2011, Vol 19, Issue 2, p415
- ISSN
0128-7680
- Publication type
Article