Document Detail


Fungi and mycotoxins in vineyards and grape products.
MedLine Citation:
PMID:  17765989     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Many fungi may occur on grapes during growth in the vineyard, but the main concern from the viewpoint of mycotoxin contamination is the black Aspergilli, Aspergillus carbonarius and A. niger. These fungi are capable of producing ochratoxin A (OA) which may contaminate grapes and grape products such as wine, grape juice and dried vine fruit. Understanding the ecology and physiology of the black Aspergilli can provide tools for management of OA at all stages of grape production and processing. In the vineyard, careful management of cultivation, irrigation and pruning can assist in minimising the levels of black Aspergilli in the soil, which in turn, can minimise contamination of grapes by these fungi. Minimising damage to grapes on the vine by the use of open vine canopies, grape varieties with resistance to rain damage and by the management of insect pests and fungal diseases (e.g., mildew, Botrytis bunch rot) can reduce the incidence of Aspergillus rot in mature berries. The risk of OA in table grapes can be minimised by careful visual inspection to avoid damaged and discoloured berries. In wine, harvesting grapes with minimal damage, rapid processing and good sanitation practices in the winery assist in minimising OA. During vinification, pressing of grapes, and clarification steps which remove grape solids, grape proteins and spent yeast can also remove a significant proportion of OA. For dried vine fruit production, avoiding berry damage, rapid drying, and final cleaning and sorting to remove dark berries can reduce overall OA levels in finished products.
Authors:
Ailsa D Hocking; Su-Lin L Leong; Benozir A Kazi; Robert W Emmett; Eileen S Scott
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review     Date:  2007-08-09
Journal Detail:
Title:  International journal of food microbiology     Volume:  119     ISSN:  0168-1605     ISO Abbreviation:  Int. J. Food Microbiol.     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2007-11-12     Completed Date:  2008-02-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8412849     Medline TA:  Int J Food Microbiol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  84-8     Citation Subset:  IM    
Affiliation:
Food Science Australia, PO Box 52, North Ryde, NSW 1670, Australia. ailsa.hocking@csiro.au <ailsa.hocking@csiro.au>
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MeSH Terms
Descriptor/Qualifier:
Aspergillus / growth & development*,  metabolism
Aspergillus niger / growth & development,  metabolism
Beverages / analysis
Food Contamination / analysis*,  prevention & control
Food Handling / methods*
Food Microbiology
Ochratoxins / analysis*,  biosynthesis,  toxicity
Plant Diseases / microbiology
Vitis* / chemistry,  microbiology
Wine / analysis
Chemical
Reg. No./Substance:
0/Ochratoxins; 303-47-9/ochratoxin A

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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