2012
DOI: 10.1590/s0102-09352012000500037 View full text |Buy / Rent full text
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Abstract: The objective of this study was to evaluate the CombiScope FTIR equipment based on Fourier Transform Infrared methodology (FTIR), to assess the content of milk urea nitrogen (MUN) in Brazil. Repeatability and reproducibility of CombiScope™ FTIR (Delta Instruments), and comparison with an enzymatic automated method (Chemspec® 150; Bentley Instruments) were tested to measure raw milk urea nitrogen (MUN). Additionally, MUN levels stability after storage of raw milk samples at 4°C, and 20°C for up to 15 days, and … Show more

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“…Other notable FT-MIR research includes studies of individual fatty acids and milk proteins [8,9], and studies of milk properties related to manufacturing, especially coagulation and other cheese-making properties [10][11][12]. Further studies have focussed on traits not directly measurable in milk, including those related to pregnancy [13,14], energy status [15,16], nitrogen outputs [17] and methane emissions [18][19][20]. Such applications demonstrate that FT-MIR spectra can be used to predict a wide range of traits, including highly topical traits that are important to animal welfare and the environment.…”
Section: Phenotyping Applications Of Ft-mir Spectramentioning
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“…Other notable FT-MIR research includes studies of individual fatty acids and milk proteins [8,9], and studies of milk properties related to manufacturing, especially coagulation and other cheese-making properties [10][11][12]. Further studies have focussed on traits not directly measurable in milk, including those related to pregnancy [13,14], energy status [15,16], nitrogen outputs [17] and methane emissions [18][19][20]. Such applications demonstrate that FT-MIR spectra can be used to predict a wide range of traits, including highly topical traits that are important to animal welfare and the environment.…”
Section: Phenotyping Applications Of Ft-mir Spectramentioning
“…Samples of milk per cow were collected in plastic bottles containing preservative (2-bromo-2-nitropropane-1,3-diol -10mg/50mL/milk) in four consecutive milkings using a milk collector coupled to the milk-line (GEA®, Düsseldorf, Germany). Milk samples were stored and analyzed for milk fat, total protein by infrared analyses ((Bentley 2000 -Bentley Instruments Inc., Chaska, MN) and milk urea nitrogen (MUN) by Fourier Transform Infrared methodology (CombiScope FTIR advanced / Delta Instruments, Drachten, Netherlands) (Oliveira a et al, 2012). Milk production corrected for 35g/kg of fat (FCM3.5) was obtained using the equation proposed by Gaines (1928): FCM3.5= (0.5255 x MP) + (16.425 x FatP), in which LCG3.5 is the milk production corrected for 35g/kg of fat (Kg/day); MP is the milk production (kg/day); FatP is the fat production (kg/day).…”
Section: Arqmentioning
“… Uma crescente demanda do mercado consumidor por produtos de alta qualidade, que mantenham suas características, revela a necessidade de análises que garantam a segurança microbiológica na produção e a vida de prateleira do produto. O setor laticinista também demanda produtos lácteos de alta qualidade, levando à progressiva adaptação desse importante segmento às exigências do mercado consumidor (Oliveira et al, 2012). A qualidade e o maior rendimento de produtos lácteos estão intimamente relacionados à qualidade da matéria-prima, desde a sua obtenção até a sua entrada na linha de processamento (Teodoro e Oliveira, 2015).…”
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