Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 191-199 |
| Number of pages | 8 |
| Journal | Bioresource Technology |
| Volume | 149 |
| DOIs | |
| Publication status | Published - 2013 |
| MoE publication type | Not Eligible |
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Keywords
- enzymatic hydrolysis
- high solids
- mixing
- particle size
- wheat bran
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Use of an extruder for pre-mixing enhances xylanase action on wheat bran at low water content. / Santala, Outi (Corresponding Author); Nordlund, Emilia; Poutanen, Kaisa.
In: Bioresource Technology, Vol. 149, 2013, p. 191-199.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Use of an extruder for pre-mixing enhances xylanase action on wheat bran at low water content
AU - Santala, Outi
AU - Nordlund, Emilia
AU - Poutanen, Kaisa
PY - 2013
Y1 - 2013
N2 - The aim of the work was to test the hypothesis that at low water content enzyme action on biomass is enhanced when the raw material is in the form of a continuous mass instead of powder/granular form. Effects of two pre-mixing methods, blade-mixing and extrusion, on xylanase action were studied during stationary incubation of wheat bran of different particle sizes, also in comparison with incubation at high water content with continuous stirring. The use of an extruder enhanced arabinoxylan (AX) solubilisation at low water content (<54%), as compared to blade-mixing. AX solubilisation was highest in the high-water stirring treatment, but based on molecular weight, xylanase action on solubilised AX was similar as in the extrusion-aided process. Pre-mixing by extrusion enabled efficient enzyme action at low water content without the requirement for continuous mixing, probably due to the enhanced diffusion by the formation of a continuous mass in the extruder.
AB - The aim of the work was to test the hypothesis that at low water content enzyme action on biomass is enhanced when the raw material is in the form of a continuous mass instead of powder/granular form. Effects of two pre-mixing methods, blade-mixing and extrusion, on xylanase action were studied during stationary incubation of wheat bran of different particle sizes, also in comparison with incubation at high water content with continuous stirring. The use of an extruder enhanced arabinoxylan (AX) solubilisation at low water content (<54%), as compared to blade-mixing. AX solubilisation was highest in the high-water stirring treatment, but based on molecular weight, xylanase action on solubilised AX was similar as in the extrusion-aided process. Pre-mixing by extrusion enabled efficient enzyme action at low water content without the requirement for continuous mixing, probably due to the enhanced diffusion by the formation of a continuous mass in the extruder.
KW - enzymatic hydrolysis
KW - high solids
KW - mixing
KW - particle size
KW - wheat bran
U2 - 10.1016/j.biortech.2013.09.029
DO - 10.1016/j.biortech.2013.09.029
M3 - Article
VL - 149
SP - 191
EP - 199
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
ER -