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http://dx.doi.org/10.9721/KJFST.2015.47.2.149

Optimization of Extrusion Process Conditions to Increase the Corn Fiber Gum and Soluble Arabinoxylan Yield from Corn Fiber  

Jeon, Sujung (Department of Food Science and Technology, Kongju National University)
Ryu, Gihyung (Department of Food Science and Technology, Kongju National University)
Publication Information
Korean Journal of Food Science and Technology / v.47, no.2, 2015 , pp. 149-157 More about this Journal
Abstract
The effects of feed moisture content (25, 35, and 45%), screw speed (230, 250, and 270 rpm), and barrel temperature (130, 140, and $150^{\circ}C$) on the product yield and soluble arabinoxylan (SAX) content from destarched corn fiber (DCF), and its optimization were investigated. The yield and SAX content of corn fiber gum (CFG) from the extruded destarched corn fiber (EDCF) were higher than those of DCF. Statistical analyses revealed that the feed moisture content and barrel temperature had a significant effect on the CFG yield and total SAX content. The optimum extrusion pretreatment conditions were as follows: feed moisture content, 30%; screw speed, 260 rpm; barrel temperature, $133^{\circ}C$. This study showed that the response surface methodology was suitable for the optimization of the extrusion conditions used to maximize the CFG yield and total SAX content from EDCF.
Keywords
corn fiber gum; soluble arabinoxylan; extrusion; response surface methodology;
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