Tokyo Food Safety Information Center » Good things to know » Molds and mycotoxins » Wallemia
Wallemia
A xerophilic fungus. It often appears on foods with high sugar concentrations, such as chocolate, sponge cake, yokan (Japanese confectionery), and dried persimmon fruits. A large amount of Wallemia is also found in dust, carpets, and the surface materials of tatami mats. It forms small chocolate-colored colonies with diameters of 2-3 mm. It does not produce mycotoxins.
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Representative strains: Wallemia sebi (W.sebi) |
 Wallemia sebi gathering on manju cake |
 Photomicrograph of Wallemia sebi |