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Sudan Red G as an adulterant in turmeric (Curcuma longa L.)

Sudanrot G als Zusatz in Gelbwurzel (Curcuma longa L.)

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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.

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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Salmén, R., Fjærtoft Pedersen, B. & Malterud, K.E. Sudan Red G as an adulterant in turmeric (Curcuma longa L.). Z Lebensm Unters Forch 184, 33–34 (1987). https://doi.org/10.1007/BF01042341

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  • DOI: https://doi.org/10.1007/BF01042341

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