Pathogenic microorganisms survival in ambrosia


  • Cláudio Dias Timm Universidade Federal de Pelotas
  • Daiani Teixeira Silva London School of Hygiene & Tropical Medicine
  • Priscila Alves Dias Universidade Federal de Pelotas
  • Rita de Cássia Santos Conceição Universidade Federal de Pelotas



ambrosia, doce de leite, Salmonella, Listeria monocytogenes, Escherichia coli O157, H7, Staphylococcus aureus


Ambrosia is a kind of dulce de leche homemade with milk, eggs and sugar. It is usually sold in free markets and it is largely consumed in South America. Food contamination by pathogenic microorganisms can occur during the food processing, in distribution centers, in retail markets or in the consumer’s homes. The aim of this study was to evaluate the survival in ambrosia of main pathogenic microorganisms eventually transmitted by dairy products. Ambrosia fractions were experimentally contaminated with Salmonella enterica subsp. enterica serotype Typhimurium, Escherichia coli O157:H7, Listeria monocytogenes and Staphylococcus aureus. Analysis to evaluate the microorganisms’ viability were made after storage for 0, 1, 2, 3, 5, 10, 20 and 30 days. Salmonella and L. monocytogenes were recovered from all samples during the 30 days of study. E. coli O157:H7 was isolated until the tenth day and S. aureus until the third day. It was demonstrated that important pathogenic microorganisms are able to survive up to 30 days in ambrosia, which makes this product a potential carrier of food-borne diseases. This work is the first study about the possibility of ambrosia transmitting relevant public-health danger pathogenic microorganisms.


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Biografia do Autor

Cláudio Dias Timm, Universidade Federal de Pelotas

Prof. Associado de Inspeção de Produtos de Origem Animal, Universidade Federal de Pelotas, UFPel, Pelotas, RS. Brasil.

Daiani Teixeira Silva, London School of Hygiene & Tropical Medicine

Discente de Doutorado, London School of Hygiene & Tropical Medicine, Londres, Inglaterra.

Priscila Alves Dias, Universidade Federal de Pelotas

Discente de Doutorado, UFPel, Pelotas, RS, Brasil.

Rita de Cássia Santos Conceição, Universidade Federal de Pelotas

Profª Ajunta de Inspeção de Produtos de Origem Animal, UFPel, Pelotas, RS, Brasil.




Como Citar

Timm, C. D., Silva, D. T., Dias, P. A., & Conceição, R. de C. S. (2013). Pathogenic microorganisms survival in ambrosia. Semina: Ciências Agrárias, 34(4), 1829–1834.




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