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

  • Ragnar Salmén
  • Berit Fjærtoft Pedersen
  • Karl E. Malterud
Original Papers

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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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • Ragnar Salmén
    • 1
  • Berit Fjærtoft Pedersen
    • 2
  • Karl E. Malterud
    • 1
  1. 1.Department of PharmacySections of Pharmacognosy University of OsloOslo 3Norway
  2. 2.Analytical ChemistryUniversity of OsloOslo 3Norway

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