[Identification of toxigenic mould in soft drink causing food poisoning].

In a soft drink caused food poisoning, white floccus was found and mould count was 6.0 x 10(2) CFU/ml. The Mycoflora was made of only one kind of mould which was identified as Penicillium janthinellum Biourge. This isolate can grow under anaerobic condition. The culture liquid of the isolate was fed to mice orally for toxicity test, which made the mice lose weight. An extract of the culture liquid was tested in weaned mice inaberitoneally for toxicity and all mice died in 24h. The toxic symptoms were tic, sway and paralysis of right rear-leg. Gross anatomy changes were gastrectosis, flatulence and intestinal edema. The conclusion is: the P. janthinellum isolate from the soft drink was the toxigenic mould.