Enriched arabinoxylan in corn fiber for value-added products |
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Authors: | Bin Wang Biao Cheng Hao Feng |
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Affiliation: | (1) Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, 382F-AESB, 1304 W Pennsylvania Ave., Urbana, IL 61801, USA |
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Abstract: | 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°C for 1 h followed by glucoamylase hydrolysis to remove starch. The remaining solid was then treated with hot water at 140–170°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. |
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Keywords: | Arabinoxylan Biofuel Corn fiber Dietary fiber Fractionation Xylooligosaccharides |
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