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Physicochemical Properties of Rice Extrudate Added with Onion Kimchi Powder  

Keawpeng, Ittiporn (Department of Food Engineering and Food Industrial Innovation Center, Mokpo National University)
Kang, Seong-Koo (School of Food Science, Sunchon National University)
Park, Yang-Kyun (Department of Food Engineering and Food Industrial Innovation Center, Mokpo National University)
Publication Information
Food Science and Preservation / v.14, no.5, 2007 , pp. 504-510 More about this Journal
Abstract
An extrusion process was to make an onion kimchi snack from rice grit and onion kimchi powder, in an effort to enhance the nutritional value, flavor, and physicochemical properties of the extrudate. This study investigated optimum conditions (moisture content, barrel temperature, and the content of onion kimchi powder) for the production of high-quality rice extrudate products, and measured quality properties (water absorption index, texture, expansion ratio, and color) of rice extrudate to which onion kimchi powder had been added. Onion kimchi powder at 3%, 5%, 7%, and 10% (all w/w) was mixed with rice grit and the mixture then extruded in a twin-screw extruder. The texture of onion kimchi mack became softer as onion kimchi powder level rose, and water absorption ability increased. The expansion ratio and the lightness of extrudates decreased with increases in onion kimchi powder levels. The maximum water absorption index am the minimum hardness were obtained with 10% onion kimchi powder. Rice extrudate with 10% onion kimchi powder was suitable for extrusion cooking md obtained the highest score for overall acceptability by sensory evaluation.
Keywords
extrusion; rice snack; onion kimchi; Physicochemical properties;
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Times Cited By KSCI : 1  (Citation Analysis)
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