Revista de Saúde Pública
Print version ISSN 0034-8910
REIS FILHO, Stelito Assis dos and IARIA, Sebastião Timo. Microorganism groups found in butter sold in the City of S. Paulo, Brazil. Rev. Saúde Pública [online]. 1981, vol.15, n.4, pp. 418-435. ISSN 0034-8910. http://dx.doi.org/10.1590/S0034-89101981000400007.
One hundred and five samples of five different brands of butter in the supermarkets of the City of S. Paulo, Brazil were brought in for testing every week for 21 weeks. From the aqueous phase, counts were made for mesophilic and psichrophilic (using the standard plate count, agar and gelysate agar), coliform, proteolytic, and lipolytic bacteria, as well as for yeasts and molds. Results were compared with parameters proposed by several researchers. In many cases, the count values can be considered high, but these high counts may be due to inadequate processing and/or inadequate storage.
Keywords : Butter; Dairy products; Microbiology.