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Presentation of Target Color with Extraction Variables in Natural Dyes Extraction  

Tak, Eun-Soo (Department of Chemical Engineering, Dankook University)
Bae, Min-Woo (Department of Chemical Engineering, Dankook University)
Kang, Seung-Hyeon (Department of Chemical Engineering, Dankook University)
Bae, You-Jin (Department of Chemical Engineering, Dankook University)
Kang, Su-Yeon (Department of Chemical Engineering, Dankook University)
Jung, Soo-Kyung (Department of Culinary Arts, Kimpo College)
Hong, In-Kwon (Department of Chemical Engineering, Dankook University)
Publication Information
Applied Chemistry for Engineering / v.21, no.5, 2010 , pp. 559-563 More about this Journal
Abstract
The representation of color with natural dyes is closely related with the modern well-being life. This study is focused on the representation of target color of the blue, yellow, and red color system, these color sources were originated from the green tea, gardenia, and black rice respectively. The quantitative numerical value of brightness (L), color coordinates (a, b) were designated for the target color, the optimum color nearest to the target value was extracted with the solvent pH, temperature, and extraction time. The longer the extraction time had more thickening color in case of the gardenia. The L-a-b coordinate of extracted color were analyzed with the color difference meter and compared with the target color. The experimental variables were optimized to extract the color of the smallest ${\Delta}E$ with the target color. As a result, the CIE standard value was proposed and the color was represented.
Keywords
natural dyes; L-a-b coordinate; color difference; CIE standard;
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Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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