Effects of Irradiation on Color Values of Food Colorants

감마선 조사가 식용색소의 색도에 미치는 영향

  • Kim Byeong-Keun (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute) ;
  • Lim Sang-Yong (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute) ;
  • Song Hyun-Pa (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute) ;
  • Chung Jin-Woo (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute) ;
  • Sung Bo-Kyung (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute) ;
  • Kim Dong-Ho (Korea Atomic Energy Research Institute, Advanced Radiation Technology Institute)
  • 김병근 (한국원자력연구소 방사선연구원) ;
  • 임상용 (한국원자력연구소 방사선연구원) ;
  • 송현파 (한국원자력연구소 방사선연구원) ;
  • 정진우 (한국원자력연구소 방사선연구원) ;
  • 성보경 (한국원자력연구소 방사선연구원) ;
  • 김동호 (한국원자력연구소 방사선연구원)
  • Published : 2006.02.01

Abstract

As a study on the physico-chemical stability of irradiated food and cosmetics, the effect of gamma irradiation on the color values of some food colorants was evaluated. Amaranth, Fast Green FCF, and Indigo Carmine solutions were prepared with different concentration (0.01 and $0.10\%$), gamma irradiated (0.25, 0.5, 1 and 3 kGy), and then Hunters color (L, a, b, ${\Delta}E$) values were determined. The. gamma irradiation process induced decoloration of the coloring agents. In particular, $0.01\%$ solution showed significant differences in the overall color difference$({\Delta}E)$. The lightness (L value) of Amaranth and Indigo Carmine was increased in proportion to irradiation dose, and their redness (a value) and yellowness (b value) also were increased. The redness (a value) and yellowness (b value) of Fast Green FCF $(0.01\%)$ were increased by gamma irradiation. However, there were no significant spectroscopic differences in $0.10\%$ concentrations of the samples.

가공식품과 화장품 산업에 사용되는 식용색소의 감마선 조사로 인한 이화학적 특성 변화를 연구할 목적으로 기계적 색도 변화를 측정하였다. 적색 2호(Amaranth), 녹색 3호(Fast Green PE), 청색 2호(Indigo Carmine)용액을 0.01 및 $0.10\%$의 농도로 준비하였으며, 0.25, 0.5, 1 및 3 kGy로 조사를 실시하여 기계적 색도 (L, a, b, ${\Delta}E$)를 측정하였다. 감마선 조사는 $0.01\%$농도 시료의 색소에 영향을 미쳤으며, 전반적인 색차$({\Delta}E)$에서도 변화를 나타내었다. 적색 2호와 청색 2호의 명도(L)는 조사선량에 의해 증가되었으며, 적색도(a)는 증가되었다. 녹색 3호의 경우에는 감마선 조사에 의해 적색도(a)와 황색도(b)가 모두 증가되었다. 이에 반해 $0.10\%$ 농도의 식용색소에서는 유의적인 변화를 일으키지 않는 것으로 나타났다.

Keywords

References

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