Journal
INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY
Volume 70, Issue 1-2, Pages 21-27Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0168-1605(01)00520-7
Keywords
mould; cheese; fungi; spoilage
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Visible mould from 225 blocks of the Norwegian semi-hard cheeses Jarlsberg and Norvegia from four factories were subcultured and identified. Altogether 23 different fungal species were detected. The two most important contaminating species were Penicilli. um commune and P. palitans, constituting 21.4% and 17.9% of the total isolates, respectively. The other dominating contaminants were P. roqueforit spp. roqueforti, Geotrichum candidum, P. solitum and P. crustosum. These species, together with P. commune and P. palitans, represented 80.9% of the total isolates. P. commune, P. palitans, P. roqueforti spp. roqueforti and P. solitum were most common contaminants on cheese produced in all four factories, while G. candidum was found to be important on Jarlsberg cheese from only one factory. P. crustosum was one of the dominating species on Norvegia cheese. (C) 2001 Elsevier Science B.V. All rights reserved.
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