SUMMARY
Total and fecal coliforms, some enterobacteria, Staphylococcus sp. and moulds in salads for hot dogs sold in Maracay city, Venezuela
Fast food sold on the streets are good vehicule to transmit gastrointestind diseases to consumers because they are highly manipulated. The vegetables are a good media for pathogens growth. Raw vegetables salads for hotdog sold in Maracay city were studied. Total and fecal Coliforms and Staphylococcus sp. were cuantified by the Most Probable Number Technique. Coliforms and Staphylococcus isolated were partially identified. Also the mould population was cuantified and identified. Microbial growth was correlated with pH and acidity measurements. MPN/g of Total Coliforms was 1,44 x 105 and 4,57 x 104 for fecal Coliforms. E. coli was no detected. 87 isolated from the Coliforms were partilly identified as Citrobacter freundii variety I (45,09% of the isolated), C. freundii variety II (21,57%), Enterobacter aerogenes variety I (17,65%) and E. aerogenes variety II (15,69%); Staphylococcus sp. 3,93 x 106 MPN/g and all of its isolated (52) were coagulase negative. The mould population was 4,5 x 104 ufc/g, Penicillium sp., Aspergillus sp., Fusarium sp. were partially identified. The salads presented a pH of 5,92 and an acidity of 0,78 ml of NaOH.

Key words: Vegetable salads, Coliforms, Enterobacteria, Sthaphylococcus sp. and Moulds; pH, acidity.



Recibido: 21/12/2000
Aceptado: 09/08/2001

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PRIVACIDAD | ACCESIBILIDAD ALAN-VE ISSN 0004-0622 - Depósito Legal: pp 199602DF83 Sociedad Latinoamericana de Nutrición Producción editorial en Venezuela: Capítulo Venezolano - RIF: J-30843129-0 Urbanización Santa María, primera transversal, No. 417-214, Planta Alta Tele-Fax: (+58-212) 283.8618 E-mail info@alanrevista.org Código Postal: 1070 Caracas - Venezuela