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《Journal of Wuhan Botanical Research》 2002-02
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The Research of the Edible Pigment of Inflorescence of Tagetes erecta L. and Its Stability

PENG Zi Mo, LIU Yu Xiang, MA Xiao Dong, LU¨ Hai Ying (Life and Environment Science Institute, Xinjiang Normal University, Urumqi 830054, China)  
The paper is based on a research of the inflorescence of Tagetes erecta L. The experiment studies also include the preliminary study of effects of light, heat, pH value, reductant, oxide , sucrose, preservative and metal ion on the stability of pigment. It proves that pigment is poor in resistance against light, heat and reductant. And it can endure oxide to some extent. The pigment can be applied to pH value widely. It is also found in the experiments that sucrose, preservative and metal ions such as Na +?K + do not basically exert negative effect on the stability of the pigment while other ions such as Fe 2+ ?Sn 2+ ?Zn 2+ have faintly negative effects on the chroma , and the increasement of ions such as Cu 2+ ?Ca 2+ have changed the color of solution of pigment and influenced on the chroma of pigment.
【CateGory Index】: TS202.3
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