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. 2006 Sep 1;111 Suppl 1:S61-6.
doi: 10.1016/j.ijfoodmicro.2006.01.044. Epub 2006 May 15.

Aspergillus Spp., Distribution, Population Composition and Ochratoxin A Production in Wine Producing Vineyards in Greece

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Aspergillus Spp., Distribution, Population Composition and Ochratoxin A Production in Wine Producing Vineyards in Greece

S E Tjamos et al. Int J Food Microbiol. .

Abstract

Vineyard surveys of 11 wine producing grape cultivars, were carried out in sixteen vineyards, in five winemaking regions in Greece, during 2002 and 2003. The occurrence of various Aspergillus spp. in bunches of berries at setting, veraison and ripening at harvest time was investigated. Aspergillus niger aggregate and A. carbonarius were predominantly isolated from sampled berries. Although the prevailing Aspergillus spp. isolates belonged to A. niger aggregate, isolates of A. carbonarius were the most efficient ochratoxin A (OTA) producers. Of 50 tested isolates of A. carbonarius 42% produced amounts of OTA, exceeding 25 ppb, while none of the 85 isolates of A. niger aggregate tested produced above 16 ppb.

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