Sudan Red G as an adulterant in turmeric (Curcuma longa L.) |
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| Authors: | Ragnar Salmén Berit Fjærtoft Pedersen und Karl E Malterud |
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| Affiliation: | (1) Department of Pharmacy, Sections of Pharmacognosy University of Oslo, P.O. Box 1068 Blindern, N-0316 Oslo 3, Norway;(2) Analytical Chemistry, University of Oslo, P.O. Box 1068 Blindern, N-0316 Oslo 3, Norway |
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| Abstract: | Zusammenfassung Eine rote Substanz wurde aus einer tanzanianischen Gelbwurzelprobe (Curcuma Tonga L.) isoliert und durch Röntgen-Einkristall-Analyse als Azofarbstoff Sudanrot G (1-(2-Methoxyphenylazo)-2-naphthol) identifiziert. Die Konzentration des Pigments in der Droge war 0,09%, aus UV-spektroskopischen Daten berechnet.
Sudan Red G as an adulterant in turmeric (Curcuma longa L.) Summary A red substance was isolated from a Tanzanian sample of turmeric (Curcuma longa L.) and identified by X-ray single crystal analysis as the azo dye Sudan Red G (1-(2-methoxyphenylazo)-2-naphthol). The concentration of the dye in the spice was 0.09%, as calculated from the UV spectrum. |
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