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Microbiological, chemical, physical, and proteolytic activities of raw milk after thermal processing Arq. Bras. Med. Vet. Zootec.
Milaneze,H.S.; Silva,L.S.; Kottwitz,L.B.M.; Zambom,M.A.; Fonseca,L.M.; Guimarães,A.T.B.; Pozza,M.S.S..
ABSTRACT The aim was to evaluate the microbiological, chemical- physical, and shelf-life quality of milk samples after pasteurization (HTST) for 10 days or ultra-high temperature (UHT) treatment for 120 days. Raw milk counts of mesophilic aerobic microorganisms, Staphylococcus spp. and thermotolerant coliforms before HTST and UHT processing were 6.73 and 7.77; 2.84 and 4.30, and 4.68 and 4.37log10, respectively. Pseudomonas spp. were found in raw milk samples. No presence of any other microorganisms studied was detected and no microbial inhibitor was found. Processed samples met microbiological legal requirements. However, aerobic mesophilic counts for HTST pasteurized milk samples stored for 5 and 10 days increased to values comparable to those in raw...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Contamination; Caseinomacropeptide; Heat treatment.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000501625
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Contaminação por Salmonella spp. em uma cadeia de produção de ovos de uma integração de postura comercial Arq. Bras. Med. Vet. Zootec.
Kottwitz,L.B.M.; Back,A.; Leão,J.A.; Alcocer,I.; Karan,M.; Oliveira,T.C.R.M..
Contamination of ISA BROWN layer hens by Salmonella spp. and serotyping of the isolated strains were performed in 30 farms. Salmonella detection was done from feces and cloaca swabs. Eggs produced in the farms contaminated by Salmonella spp. were analyzed by culturing the shell rinsing and egg yolk. Salmonella spp. was isolated in eight (23.0%) farms, but was not detected from eggs. S. Enteritidis, which is the most prevalent sorotype associated to human salmonelosis in Paraná State, was not isolated either from birds or eggs analyzed. The sorotypes isolated were Salmonella enterica subsp. enterica (0:3.10) (67.0%), Mbandaka (11.0%), Infantis (11.0%), and Newport (11.0%).
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ovo; Salmonella; Contaminação.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000200034
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