Growth of moulds inoculated into commercial mineral water.
The growth of mould spores of Penicillium sp. and Cladosporium sp. inoculated in a commercial mineral water product was studied. The strains had been isolated as fungal foreign bodies in commercial mineral waters. In product A, which was not originally sterilized and was contaminated with psychrophilic bacteria, the inoculated mould spores of the strains did not grow; no increases in viable colony counts or beta-glucans concentration in the samples were observed during storage. In a sterilized product A, inoculated spores of the strains grew into visible foreign bodies. The viable colony counts and the beta-glucans concentration in the samples increased during storage. These results showed that in a sterilized mineral water product, mould spores could grow into visible foreign bodies.
Fujikawa
H
H
Department of Microbiology, Tokyo Metropolitan Research Laboratory of Public Health, Japan. fujik@tokyo-eiken.go.jp
Aketagawa
J
J
Nakazato
M
M
Wauke
T
T
Tamura
H
H
Morozumi
S
S
Itoh
T
T
D002963:Cladosporium / Q000254:growth & development; D008900:Mineral Waters / Q000382:microbiology*; D003904:Mitosporic Fungi / Q000254:growth & development*; D010407:Penicillium / Q000254:growth & development; D014871:Water Microbiology
D008900:Mineral Waters