Abstract:
:From 1988 to 1990, a dairy plant was examined for Listeria contamination. Three hundred and forty samples were collected and analysed for the presence of Listeria. Sixty-one Listeria strains (L. monocytogenes, 44, and L. innocua, 17) were isolated from four varieties of cheese, cheese brines, process equipment and plant environment. The L. monocytogenes strains were recovered during the ripening and rind washing stages and not before, so it is likely that cheese contamination occurred at these points in the manufacturing process. The characterization of the isolated L. monocytogenes strains by serotyping and phage typing showed different serovars and phagovars. Some strains with the same serovar and the same phagovar were isolated from cheeses and process equipment (shelves) indicating that cheese contamination occurs during ripening. Only one profile was found from the analysis of the ribosomal ribonucleic acid (rRNA) gene restriction patterns of 38 L. monocytogenes strains with different serovars and phagovars. This suggests that all L. monocytogenes strains isolated in the dairy plant could have been derived from a single ancestral group.
journal_name
Int J Food Microbioljournal_title
International journal of food microbiologyauthors
Jacquet C,Rocourt J,Reynaud Adoi
10.1016/0168-1605(93)90056-msubject
Has Abstractpub_date
1993-10-01 00:00:00pages
13-22issue
1eissn
0168-1605issn
1879-3460pii
0168-1605(93)90056-Mjournal_volume
20pub_type
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journal_title:International journal of food microbiology
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journal_title:International journal of food microbiology
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journal_title:International journal of food microbiology
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journal_title:International journal of food microbiology
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journal_title:International journal of food microbiology
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journal_title:International journal of food microbiology
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journal_title:International journal of food microbiology
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更新日期:1988-05-01 00:00:00
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journal_title:International journal of food microbiology
pub_type: 杂志文章
doi:10.1016/j.ijfoodmicro.2006.10.022
更新日期:2007-04-10 00:00:00
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journal_title:International journal of food microbiology
pub_type: 杂志文章
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journal_title:International journal of food microbiology
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更新日期:2017-08-02 00:00:00
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journal_title:International journal of food microbiology
pub_type: 杂志文章
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更新日期:2011-01-05 00:00:00
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journal_title:International journal of food microbiology
pub_type: 杂志文章
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更新日期:2021-01-19 00:00:00
abstract::During wine fermentation, yeasts produce metabolites that are known growth regulators. The relationship between certain higher alcohols derived from aromatic amino acid metabolism and yeast signalling has previously been reported. In the present work, tryptophol (TrpOH) or melatonin (MEL), which are putative growth re...
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pub_type: 杂志文章
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