공업화학 (Applied Chemistry for Engineering)

  • 제21권5호
  • /
  • Pages.559-563
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  • 2010
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  • 1225-0112(pISSN)
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  • 2288-4505(eISSN)
한국공업화학회 (The Korean Society of Industrial and Engineering Chemistry)
권호 표지

천연색소 추출공정에서 추출특성에 따른 목표색의 재현

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)
  • 투고 : 2010.07.10
  • 심사 : 2010.08.27
  • 발행 : 2010.10.10
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초록

천연색소를 이용한 컬러의 재현은 현대의 웰빙 생활과 밀접한 연관성을 갖게 된다. 이 연구는 일상생활에서 자주 쓰이는 녹색 계, 황색 계, 그리고 적색 계의 컬러를 자연 상의 녹차, 치자, 흑미를 색소원으로 하여 목표 색을 설정하였다. 목표색의 명도(L), 색 좌표(a, b)의 정량적 수치 값을 지정하고 추출용매의 물성을 조절함으로써 목표 색에 가장 접근하는 색을 추출하여 표현하였다. 색소추출 공정에서 용매의 pH, 추출온도, 추출시간이 변수로 설정되었다. 치자의 경우 추출시간이 길수록 진한색이 추출되었다. 추출색소는 색차계를 이용해 색의 L-a-b좌표를 측정하여 목표 색과 비교하였다. 실험조건을 최적화함으로써 목표 색과 가장 색차 값(${\Delta}E$)이 적은 녹색, 황색, 적색의 CIE 기준 값을 제시하고 이 좌표에 맞는 색을 표현하였다.

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.

키워드

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