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KMID : 0903519990420030151
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1999 Volume.42 No. 3 p.151 ~ p.153
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Detection of Fake Jindo Hongju Using the pH-dependent Color Change of Gromwell(Lithospermum erythrorhizon) Pigment
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Kim, Jung Ho
Bae, Yeong Hwan/Choi, Kap Seong
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Abstract
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Gromwell (Listhospermum erythrorhizon) pigment solution and Jindo Hongju prepared in the laboratory showed characteristic pH-dependent color changes and a shift in absorption maxima. This phenomenon was not observed in the solution of the artificial food colorant Red No. 2 which was suspected to be used in the manufacture of fake Jindo Hongju. A few fake products could be detected by using the pH-dependent shift in absorption maxima among the Jindo Hongju on market.
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KEYWORD
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