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Properties of Amaranth Flour Processed by Various Methods  

Choi, Cha-Ran (Department of Food and Nutrition, Chonnam National University)
Kim, Sung-Ran (Korea Food Research Institute)
Lee, Jae-Hak (Korea Plant Resource Institute)
Shin, Mal-Shick (Department of Food and Nutrition, Chonnam National University)
Publication Information
Korean Journal of Food Science and Technology / v.36, no.2, 2004 , pp. 262-267 More about this Journal
Abstract
Processed foods were developed using amaranth starch and flours. Amaranth seeds were untreated (UT), defatted (DF), germinated (GM), roasted (RT), popped (POP), and extruded (EX1 and EX2). Amaranth flours showed A-type pattern on X-ray diffractograms, while crystallinity was not observed in POP, EX1, and EX2. POP and EX1 showed highest (740.3%) and lowest (38.5%) water-binding capacities, respectively. Transmittances of RT, POP, EX1, and EX2 flour suspensions were higher than those of others. Transmittance of amaranth starch and flours differed with processing methods. RT, POP, EX1, and EX2 showed higher transmittance at $60^{\circ}C$. Initial pasting temperature of amaranth flours by RVA were $68.1-73.0^{\circ}C$, and peak viscosities of GM and RT were 31.6 and 401.1 RVU, respectively. Melting endotherms of POP, EX1, and EX2 were not observed in DSC thermograms.
Keywords
amaranth flour; processed flour; amaranth starch;
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