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dc.contributor.authorBoiani, Mattia
dc.contributor.authorFitzgerald, Richard J.
dc.contributor.authorKelly, Philip
dc.date.accessioned2019-08-12T15:12:30Z
dc.date.available2019-08-12T15:12:30Z
dc.date.issued2018-09-27
dc.identifier.citationBoiani, M., FitzGerald, R. J., & Kelly, P. M. (2018). Technical note: Fourier transform infrared spectral analysis in tandem with 31P nuclear magnetic resonance spectroscopy elaborates detailed insights into phosphate partitioning during skimmed milk microfiltration and diafiltration. Journal of Dairy Science, 101(12), 10750–10758. https://doi.org/10.3168/jds.2018-14749en_US
dc.identifier.urihttp://hdl.handle.net/11019/1716
dc.descriptionpeer-revieweden_US
dc.description.abstractOur previous study identified peaks in the 31P nuclear magnetic resonance (31P NMR) spectra of skim milk, denoting the interaction of different phosphate species such as inorganic and casein-associated phosphate during the separation of colloidal and serum phases of skim milk by microfiltration (MF) and diafiltration (DF). In the current study, we investigated the same samples generated by the aforementioned separation using attenuated total reflectance (ATR) Fourier transform infrared (FTIR) spectroscopy analysis. The results confirmed that the technique was not only capable of differentiating between the mineral equilibrium of the casein phosphate nanocluster (CPN) and milk serum, but also complemented the application of 31P NMR. An ATR-FTIR broad band in the region of 1,055 to 1,036 cm−1 and a specific band at 1,076 cm−1 were identified as sensitive to the repartitioning of different phosphate species in milk in accordance with the 31P NMR signals representing casein-associated phosphate and inorganic phosphate in the serum. A third ATR-FTIR signal at 1,034 cm−1 in milk, representing precipitated inorganic calcium phosphate, had not previously been detected by 31P NMR. Thus, the results indicate that a combination of ATR-FTIR and 31P NMR spectroscopies may be optimally used to follow mineral and protein phase changes in milk during membrane processing.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofseriesJournal of Dairy Science;Vol. 101 (12)
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/us/*
dc.subjectFourier transform infrareden_US
dc.subjectcaseinen_US
dc.subjectphosphate nanoclusteren_US
dc.subjectmicellar structureen_US
dc.titleTechnical note: Fourier transform infrared spectral analysis in tandem with 31P nuclear magnetic resonance spectroscopy elaborates detailed insights into phosphate partitioning during skimmed milk microfiltration and diafiltrationen_US
dc.typeTechnical Reporten_US
dc.embargo.terms2019-09-27en_US
dc.identifier.doihttps://dx.doi.org/10.3168/jds.2018-14749
dc.contributor.sponsorDepartment of Agriculture, Food and the Marineen_US
dc.contributor.sponsorTeagasc Walsh Fellowship Programmeen_US


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