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The hygienic quality of vegetables grown in or imported into the Netherlands: a tentative survey

Published online by Cambridge University Press:  15 May 2009

S. K. Tamminga ,
R. R. Beumer  and
E. H. Kampelmacher
S. K. Tamminga
Affiliation:
Laboratory for Food Microbiology and Hygiene, Agricultural University, Wageningen, The Netherlands
R. R. Beumer
Affiliation:
Laboratory for Food Microbiology and Hygiene, Agricultural University, Wageningen, The Netherlands
E. H. Kampelmacher
Affiliation:
Laboratory for Food Microbiology and Hygiene, Agricultural University, Wageningen, The Netherlands
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Samples of 61 home grown and 199 imported vegetables of different varieties were examined for Escherichia coli, faecal streptococci and, when E. coli was present, for salmonellas. Eleven per cent of samples contained > 104E. coli per 100 g, and 14% > 106 faecal streptococci per 100 g. Salmonellas were isolated from 23 out of 103 samples examined.

Salmonellas were isolated from 8% of 76 samples with E. coli <104/100 g, but from 63% of 27 samples with E. coli exceeding 104/100 g; from 6% of 65 samples containing < 106 faecal streptococci/100 g but from 51% of 37 samples containing more than 106/100 g.

S. typhi was isolated from one sample of vegetables imported from the tropics. To our knowledge this is the first isolation of S. typhi from food in the Netherlands. Products from tropical countries were found to present the highest level of contamination. The hygienic quality of Dutch products is sometimes inferior to that of similar imported products, although the different seasons of sampling may have influenced the result. For the prevention of risk to the consumer of vegetables, good kitchen hygiene would appear to be the most important factor.

Type
Research Article
Information
Journal of Hygiene , Volume 80 , Issue 1 , February 1978 , pp. 143 - 154
Copyright
Copyright © Cambridge University Press 1978

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