Skyrin
Application Notes
Skyrin is a bright orange mycotoxin pigment first reported from Penicillium islandicum but since reported in a broad cross-section of fungal genera and lichens. Its name is derived from skyr, an Icelandic bacterial soured milk, a mouldy sample of which provided the Sopp type strain of P. islandicum. Skyrin is a bisanthraquinone which degrades to two molecules of emodin on treatment with sodium dithionite. Its structure was resolved by Shibata and co-workers in 1955. Skyrin is an important metabolite for the detection of mycotoxins.
References
- Studies in the biochemistry of micro-organisms 91. The colouring matters of Penicillium islandicum Sopp. Part 3. Skyrin and Flavoskyrin. Howard B.H. and Raistrick H., Biochem J. 1954, 56, 56.
- Metabolic products of fungi. V. The structure of skyrin. Shibata S. et al., Pharm. Bull. 1955, 3, 278.
- Dereplication of microbial natural products by LC-DAD-TOFMS. Nielsen K.F. et al., J. Nat. Prod. 2011, 74, 2338.



