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Type: Artigo de periódico
Title: Recovery Of Staphylococcus Aureus After Acid Injury In Milk Products [recuperación De Staphylococcus Aureus Después De La Injuria ácida En Productos Lácteos.]
Author: Assis E.M.
De Carvalho E.P.
Asquieri E.R.
Robbs P.G.
Abstract: The growth behavior of Staphylococcus aureus in fresh Cheese (Minas and Muzzarella) during their shelf-life was studied. The possible injury of this microorganism caused by the increasing acidity was also investigated. Raw milk was inoculated with 10(6) cells/ml (S. aureus FRIA-100) and the cheese production was performed according to normal procedures. Minas and muzzarella cheese were stored at 7 degrees C for 40 and 60 days, respectively. At 2-3 days intervals, the following analysis were performed: acidity, pH, S. aureus counting using agar Baird Parker by the traditional methods and by the method recommended by the American Public Health Association to evaluate the reparation of injured cells. We had a secure indication of the presence of injured S. aureus when acidity was in the range of 0.7 to 0.8% expressed in lactic acid and when the cycle was 1.3 log higher than the traditional one.
Rights: aberto
Identifier DOI: 
Date Issue: 1994
Appears in Collections:Unicamp - Artigos e Outros Documentos

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