Abstract
The degradation of sugars into less desirable compounds such as acetic acid and furfural are common during acid hydrolysis. The aim of this study was to evaluate the variables of pH, concentration of acetic acid and furfural on the production of xylitol utilising Kluyveromyces marxianus ATCC 36907 by employing full factorial design. The ANOVA results showed that at the 95% confidence level all three factors and interactions of initial pH of fermentation with acetic acid and furfural concentration were significantly affect the xylitol yield. The results of this experiment were fitted with the second order polynomial regression to relate the yield of xylitol and the independent variables. The fitted model showed a good agreement between the observed and predicted value of xylitol yield by Kluyveromyces marxianus ATCC 36907. The xylitol yield for bioconversion of detoxified dilute acid OPF hydrolysate was 0.29 g/g of xylose with the presence of 4 g/L of acetic acid and 0.5 g/L furfural. The fermentation process was carried out at initial pH 6.5. Results of these experiments indicated that the regression model equation was a valid method to evaluate the relationship of response and independent variables and to predict the xylitol yield based on the composition of major inhibitors present in the dilute acid oil palm fronds (OPF) hydrolysate.
| Original language | English |
|---|---|
| Pages (from-to) | 241-255 |
| Number of pages | 15 |
| Journal | Journal of Physical Science |
| Volume | 28 |
| DOIs | |
| Publication status | Published - 2017 |
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Keywords
- Acetic acid
- Full factorial design
- Furfural
- PH
- Xylitol
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy(all)
Cite this
Interaction effects of pH and inhibitors in oil palm frond (OPF) hemicelullosic hydrolysate on xylitol production : A statistical study. / Manaf, Shareena Fairuz Abdul; Luthfi, Abdullah Amru Indera; Md Jahim, Jamaliah; Harun, Shuhaida.
In: Journal of Physical Science, Vol. 28, 2017, p. 241-255.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Interaction effects of pH and inhibitors in oil palm frond (OPF) hemicelullosic hydrolysate on xylitol production
T2 - A statistical study
AU - Manaf, Shareena Fairuz Abdul
AU - Luthfi, Abdullah Amru Indera
AU - Md Jahim, Jamaliah
AU - Harun, Shuhaida
PY - 2017
Y1 - 2017
N2 - The degradation of sugars into less desirable compounds such as acetic acid and furfural are common during acid hydrolysis. The aim of this study was to evaluate the variables of pH, concentration of acetic acid and furfural on the production of xylitol utilising Kluyveromyces marxianus ATCC 36907 by employing full factorial design. The ANOVA results showed that at the 95% confidence level all three factors and interactions of initial pH of fermentation with acetic acid and furfural concentration were significantly affect the xylitol yield. The results of this experiment were fitted with the second order polynomial regression to relate the yield of xylitol and the independent variables. The fitted model showed a good agreement between the observed and predicted value of xylitol yield by Kluyveromyces marxianus ATCC 36907. The xylitol yield for bioconversion of detoxified dilute acid OPF hydrolysate was 0.29 g/g of xylose with the presence of 4 g/L of acetic acid and 0.5 g/L furfural. The fermentation process was carried out at initial pH 6.5. Results of these experiments indicated that the regression model equation was a valid method to evaluate the relationship of response and independent variables and to predict the xylitol yield based on the composition of major inhibitors present in the dilute acid oil palm fronds (OPF) hydrolysate.
AB - The degradation of sugars into less desirable compounds such as acetic acid and furfural are common during acid hydrolysis. The aim of this study was to evaluate the variables of pH, concentration of acetic acid and furfural on the production of xylitol utilising Kluyveromyces marxianus ATCC 36907 by employing full factorial design. The ANOVA results showed that at the 95% confidence level all three factors and interactions of initial pH of fermentation with acetic acid and furfural concentration were significantly affect the xylitol yield. The results of this experiment were fitted with the second order polynomial regression to relate the yield of xylitol and the independent variables. The fitted model showed a good agreement between the observed and predicted value of xylitol yield by Kluyveromyces marxianus ATCC 36907. The xylitol yield for bioconversion of detoxified dilute acid OPF hydrolysate was 0.29 g/g of xylose with the presence of 4 g/L of acetic acid and 0.5 g/L furfural. The fermentation process was carried out at initial pH 6.5. Results of these experiments indicated that the regression model equation was a valid method to evaluate the relationship of response and independent variables and to predict the xylitol yield based on the composition of major inhibitors present in the dilute acid oil palm fronds (OPF) hydrolysate.
KW - Acetic acid
KW - Full factorial design
KW - Furfural
KW - PH
KW - Xylitol
UR - http://www.scopus.com/inward/record.url?scp=85013230945&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85013230945&partnerID=8YFLogxK
U2 - 10.21315/jps2017.28.s1.16
DO - 10.21315/jps2017.28.s1.16
M3 - Article
AN - SCOPUS:85013230945
VL - 28
SP - 241
EP - 255
JO - Journal of Physical Science
JF - Journal of Physical Science
SN - 1675-3402
ER -