The Effect of Processing and Seasonality on the Iodine and Selenium Concentration of Cow's Milk Produced in Northern Ireland (NI): Implications for Population Dietary Intake

Nutrients
S Maria O'KaneAlison J Yeates

Abstract

Cow's milk is the most important dietary source of iodine in the UK and Ireland, and also contributes to dietary selenium intakes. The aim of this study was to investigate the effect of season, milk fat class (whole; semi-skimmed; skimmed) and pasteurisation on iodine and selenium concentrations in Northern Ireland (NI) milk, and to estimate the contribution of this milk to consumer iodine and selenium intakes. Milk samples (unpasteurised, whole, semi-skimmed and skimmed) were collected weekly from two large NI creameries between May 2013 and April 2014 and were analysed by inductively coupled plasma-mass spectrometry (ICP-MS). Using milk consumption data from the National Diet and Nutrition Survey (NDNS) Rolling Programme, the contribution of milk (at iodine and selenium concentrations measured in the present study) to UK dietary intakes was estimated. The mean ± standard deviation (SD) iodine concentration of milk was 475.9 ± 63.5 µg/kg and the mean selenium concentration of milk was 17.8 ± 2.7 µg/kg. Season had an important determining effect on the iodine, but not the selenium, content of cow's milk, where iodine concentrations were highest in milk produced in spring compared to autumn months (534.3 ± 53.7 vs. 433.6 ± 57.8 ...Continue Reading

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Citations

Oct 19, 2019·European Journal of Clinical Nutrition·Mark ShawJayne V Woodside
May 2, 2020·Nutrients·Janet M RoselandMeena Somanchi
Jun 2, 2020·Journal of Dairy Science·C McKernanA A Meharg
Nov 30, 2020·Clinical Endocrinology·Jayne V Woodside, Karen R Mullan
Feb 10, 2021·Nutrients·Iwona Krela-KaźmierczakAgnieszka Dobrowolska
May 14, 2021·European Thyroid Journal·Till IttermannHenry Völzke

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Statistical Package for Social Sciences ( SPSS )

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