Enriched arabinoxylan in corn fiber for value-added products.
A two-step process is evaluated to separate the hexose component in wet milling corn fibers from the pentose component for production of value-added products. Corn fibers were first pretreated with hot water at 121 degrees C for 1 h followed by glucoamylase hydrolysis to remove starch. The remaining solid was then treated with hot water at 140-170 degrees C followed by an enzymatic hydrolysis to further separate the hexose and pentose components. After the second pretreatment, the enzymatic digestibility of cellulose was much better than that of arabinoxylan. As a result, up to 90% arabinoxylan in corn fibers was retained in a solid form after the enzyme hydrolysis, while most of the hexose components were removed.
Wang
Bin
B
Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
Cheng
Biao
B
Feng
Hao
H
D005591:Chemical Fractionation / Q000379:methods*; D004043:Dietary Fiber; D005087:Glucan 1,4-alpha-Glucosidase / Q000737:chemistry; D006868:Hydrolysis; D008855:Microscopy, Electron, Scanning; D009844:Oligosaccharides / Q000737:chemistry; D014990:Xylans / Q000737:chemistry / Q000302:isolation & purification*; D003313:Zea mays / Q000737:chemistry*
D004043:Dietary Fiber; D009844:Oligosaccharides; D014990:Xylans; C085118:arabinoxylan; D005087:Glucan 1,4-alpha-Glucosidase