Reference : Fast and high yield recovery of arabinose from destarched wheat bran
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/125488
Fast and high yield recovery of arabinose from destarched wheat bran
English
Aguedo, Mario mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
Vanderghem, Caroline mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
Goffin, Dorothée mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
Richel, Aurore mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
Paquot, Michel mailto [Université de Liège - ULg > Chimie et bio-industries > Chimie biologique industrielle >]
2013
Industrial Crops & Products
Elsevier Science
43
318-325
Yes (verified by ORBi)
International
0926-6690
[en] Arabinose ; Wheat bran ; Microwave ; Xylose ; Box-Behnken experimental design ; Combined severity factor
[en] Enzymatically destarched wheat bran (DWB) contained 13.8% of arabinose and 23.1% xylose. Up to a maximum of 70% of the arabinose was progressively released from DWB when heated at 80 or 100°C in media acidified with HCl. Whereas microwave irradiation at higher temperatures in pressure vessels could lead to higher yields of extraction. A Box-Behnken experimental design established an efficient model describing the effects of temperature, irradiation duration and pH on arabinose extraction. The pH appeared as the most important factor of the process. 4-5 min of microwave heating at 150ºC and pH 1 appeared as a fast and highly efficient method to recover more than 90% of the arabinose of DWB. When plotting the percentages of arabinose against the combined severity factors LogR’0 (calculated from the temperature/duration/pH conditions applied), two different fitting profiles were obtained for both the heating techniques. Under microwave heating, high free xylose’s release could also occur. The experimental design led to a quadratic model predicting the release of xylose from DWB. A range of conditions enabled to minimize xylose and hydrolyze around 50% of the total arabinose, yielding a high purity fraction. An alternative would be to release more than 90% of both arabinose and xylose, for further arabinose purification or for a common valorization of both pentoses.
http://hdl.handle.net/2268/125488

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