solved. Various authors have proved that the Säure. Teil VI: Übersicht und Diskussion der Fe2+ in the porphyrin ring is exchanged with Ergebnisse. 18. Mitteilung über Reduktone und 1,2,3- Tricarbonylverbindungen. Helvetica Chimica Acta Zn2+, which gives the hams a pleasant red 53:320–333. color. Nitrite addition prevents the exchange Dederer, I. 2006. Personal communication. (Møller et al. 2003; Parolari et al. 2003; Deierling, H., U. Hemmrich, N. Groth, and H. Taschan. 1997. Nitrosamine in Lebensmitteln. Wakamatsu et al. 2004a, b; Adamsen et al. Lebensmittelchemie 51:53–61. 2006). Directive 2006. Directive 2006/52/EC of the European Parliament and of the Council of 5 July 2006 amend-
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