Concentração hidrogeniônica do leite de ovelhas: influência da mastite e do congelamento da amostra

Maiara Garcia Blagitz; Camila Freitas Batista; Fernando Nogueira Souza; Claudia Regina Stricagnolo; Viviani Gomes; Alice Maria Melville Paiva Della Libera

doi:10.5216/cab.v12i1.9190

HYDROGEN ION CONCENTRATION IN EWE´S MILK: INFLUENCE OF MASTITIS AND SAMPLE FREEZING

Authors

Maiara Garcia Blagitz Universidade de São Paulo(USP), São Paulo, São Paulo, Brasil
Camila Freitas Batista Universidade de São Paulo(USP), São Paulo, São Paulo, Brasil
Fernando Nogueira Souza Universidade de São Paulo(USP), São Paulo, São Paulo, Brasil
Claudia Regina Stricagnolo Universidade de São Paulo(USP), São Paulo, São Paulo, Brasil
Viviani Gomes Universidade Federal do Paraná (UFPR), Curitiba, Paraná, Brasil
Alice Maria Melville Paiva Della Libera Universidade de São Paulo(USP), São Paulo, São Paulo, Brasil

DOI:

https://doi.org/10.5216/cab.v12i1.9190

Keywords:

Animal sanity

Abstract

The measurement of pH in milk is one of the most important and frequent procedures performed in biochemistry practices. This variable is applied to the diagnosis of mammary gland disease, assessment of industrial yields, and identification of metabolic diseases. The objective of this study was to evaluate de effect of freezing the milk from healthy and infected mammary glands of Santa Ines ewes on the pH. The bacteriological culture of 183 milk samples was analyzed resulting in 146 negative and 37 positive samples. From these, the hydrogen ion concentration was determined on sampling day and after freezing at -20°C for 30 months. A reduction on pH was observed after freezing, and the bacteriological positive samples showed the highest pH values. A higher decrease of the pH after freezing was seen in positive samples. Thus, the kind of conservation of milk samples should be considered, as well as the results of parameters that could be influenced by such variation.

KEYWORDS: pH, freezing, milk, ewes.

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Published

2011-03-31

How to Cite

BLAGITZ, M. G.; BATISTA, C. F.; SOUZA, F. N.; STRICAGNOLO, C. R.; GOMES, V.; LIBERA, A. M. M. P. D. HYDROGEN ION CONCENTRATION IN EWE´S MILK: INFLUENCE OF MASTITIS AND SAMPLE FREEZING. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 12, n. 1, p. 187–191, 2011. DOI: 10.5216/cab.v12i1.9190. Disponível em: https://revistas.ufg.br/vet/article/view/9190. Acesso em: 24 apr. 2025.

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Issue

Vol. 12 No. 1 (2011)

Section

Nota Científica

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