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| Marín-Quiroga,Arlette; Villanueva-Fierro,Ignacio; Rodríguez-Pérez,M. Alberto; Lares-Asseff,I. Antonio; Cháirez-Hernández,Isaías; Proal-Nájera,J. Bernardo. |
| The content of insulin-like growth factor 1 (IGF-1) in bovine milk in México is unknown, and high levels could increase the health risk for adult people who ingest milk. The aim of this study was to determine the level of IGF-1 and its relationship with fat content using liquid chromatography with ion trap as a mass detector in milk marketed in Durango, México. During 18 months we analyzed, three times, six lots chosen randomly of whole, reduced-fat, and low-fat milk of three brands. Each sample was pre-treated using cut-off membranes, digested with trypsin, and subjected to liquid chromatography-mass spectrometry. There was a significant difference in the mean concentration of IGF-1 between the brands and types of milk analyzed (Chi square=34.66;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cut-off filtration; Fat; Insulin-like growth factor 1; Milk analysis; Somatomedin. |
| Ano: 2015 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952015000200001 |
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| Cassoli,Laerte Dagher; Sartori,Beatriz; Machado,Paulo Fernando. |
| The objective of this study was to develop calibrations to determine the concentration of some milk adulterants by using the automated methodology of Fourier Transform Infrared (FTIR). For construction of calibrations, samples were collected from 100 farms in the states of São Paulo and Minas Gerais. Samples were tainted with three different adulterants commonly used in the adulteration of raw milk: sodium bicarbonate (SB), sodium citrate (SC) and cheese whey (W). Each adulterant was used at three different concentrations (SB: 0.05, 0.10 and 0.25%; SC: 0.025, 0.050 and 0.075% and W: 5, 10 and 20%). For validation, 60 samples were collected in other farms, which were not considered at the development stage of calibration. Adulterants were added at the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Milk analysis; Non-acid whey; Sodium bicarbonate; Sodium citrate; Tainted milk. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001100042 |
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