TY - JOUR
T1 - Improving the extractability of arabinoxylans and the molecular weight of wheat endosperm using extrusion processing
AU - Fadel, Abdulmannan
AU - Ashworth, Jason
AU - Plunkett, Andrew
AU - Mahmoud, Ayman M.
AU - Ranneh, Yazan
AU - Li, Weili
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/11
Y1 - 2018/11
N2 - Cereal derived arabinoxylans (AXs) are non-starch polysaccharides that have immunomodulatory activities. These activities are thought to be related to the low molecular weight fractions of AXs. Wheat and wheat by-products are rich in AXs, however, the water extractable fraction of AXs in wheat products is low. Water extraction of AXs can be improved by extrusion processing, which increases the extractability of the water soluble fraction. The aim of this study was to determine the extractability and molecular weight of the water soluble fraction of AXs from wheat endosperm after extrusion at screw speeds of 80 and 160 rpm. Extrusion processing significantly (P < 0.05) increased the water extractability of AXs in a screw-speed dependent manner (13.07 ± 0.12% at 80 rpm and 15.45 ± 0.16% at 160 rpm compared to8.95 ± 0.10% in the non-extruded control) due to a significant increase (P < 0.05) in low molecular weight fractions of AXs in extruded samples.
AB - Cereal derived arabinoxylans (AXs) are non-starch polysaccharides that have immunomodulatory activities. These activities are thought to be related to the low molecular weight fractions of AXs. Wheat and wheat by-products are rich in AXs, however, the water extractable fraction of AXs in wheat products is low. Water extraction of AXs can be improved by extrusion processing, which increases the extractability of the water soluble fraction. The aim of this study was to determine the extractability and molecular weight of the water soluble fraction of AXs from wheat endosperm after extrusion at screw speeds of 80 and 160 rpm. Extrusion processing significantly (P < 0.05) increased the water extractability of AXs in a screw-speed dependent manner (13.07 ± 0.12% at 80 rpm and 15.45 ± 0.16% at 160 rpm compared to8.95 ± 0.10% in the non-extruded control) due to a significant increase (P < 0.05) in low molecular weight fractions of AXs in extruded samples.
KW - Arabinoxylans
KW - Extrusion processing
KW - Non-starch polysaccharides
KW - Size-exclusion chromatography
UR - http://www.scopus.com/inward/record.url?scp=85055978711&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055978711&partnerID=8YFLogxK
U2 - 10.1016/j.jcs.2018.09.009
DO - 10.1016/j.jcs.2018.09.009
M3 - Article
AN - SCOPUS:85055978711
SN - 0733-5210
VL - 84
SP - 55
EP - 61
JO - Journal of Cereal Science
JF - Journal of Cereal Science
ER -