Iodine content of Canadian retail milk samples II. After the ethylenediamine dihydroiodide ban

Fischer, P.; Giroux, Alexandre

doi:10.1016/0963-9969(93)90031-d

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…A study in Canada indicated that dairy products contribute 64.5% of an individual's total iodine intake, when iodized salt was not included [2]. In another study, the New Zealand Total Diet Surveys estimated that approximately 40% of the iodine intake for a young male was contributed by dairy products, while for a young child the contribution was approximately two thirds [3].…”

Section: Introductionmentioning

confidence: 97%

Iodine in Raw and Pasteurized Milk of Dairy Cows Fed Different Amounts of Potassium Iodide

Norouzian

2010

Biol Trace Elem Res

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Relation between iodine (I) intake by lactating Holstein cows and iodine concentrations in raw and pasteurized milk were investigated. Four treatment groups with eight cows assigned to each treatment were fed a basal diet containing 0.534 mg I/kg alone or supplemented with potassium iodide at 2.5, 5 or 7.5 mg/kg in 7-week period. Iodine concentrations in raw milk increased with each increase in dietary I from 162.2 ng/ml for basal diet to 534.5, 559.8 and 607.5 ng/ml when 2.5, 5 and 7.5 mg/kg was fed as potassium iodide (P < 0.05). This trend was found for blood plasma and urine iodine concentration. Iodine supplementation had no significant effect on thyroidal hormones. high-temperature short-time (HTST) pasteurization process reduced I concentration. The mean iodine content found in the milk prior to heating processing was 466.0 ± 205.0 ng/ml, whereas for the processed milk this level was 349.5 ± 172.8 ng/ml. It was concluded that iodine supplementation above of NRC recommendation (0.5 mg/kg diet DM) resulted in significant increases in iodine concentrations in milk, although the effect of heating in HTST pasteurization process on iodine concentration was not negligible.

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Section: Introductionmentioning

confidence: 97%

Iodine in Raw and Pasteurized Milk of Dairy Cows Fed Different Amounts of Potassium Iodide

Norouzian

2010

Biol Trace Elem Res

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“…The frequency of prenatal vitamin or supplement use in Canada is unknown. One Canadian study conducted in the early 1990s reported iodine concentrations ranging from 87 to 1304 μg/L in samples of whole (mean iodine concentration of 177 ± 35 μg/L) and 2% fat (mean iodine concentration of 456 ± 151 μg/L) commercially available retail milk brands (22). …”

Section: Discussionmentioning

confidence: 99%

Iodine Nutrition During Pregnancy in Toronto, Canada

et al. 2013

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Objective To evaluate the status of iodine nutrition among pregnant women presenting for routine antenatal care in Toronto, Canada, as determined by the median urine iodine concentration (UIC) of this population. Methods A cross-sectional, observational study was conducted involving 142 pregnant women recruited from four low-risk antenatal outpatient clinics in Toronto, Canada. Subjects completed a questionnaire and provided a spot urine sample for the measurement of iodine concentration. Results Mean maternal age was 33.8 ± 4.3 years. Mean gestational age was 29.3 ± 7.8 weeks. The median UIC was 221 μg/L (interquartile range, 142 to 397 μg/L). Six women (4.2%) had urine iodine levels <50 μg/L, and 36 women (25.4%) had levels between 50 and 150 μg/L. Conclusion This cohort of primarily Caucasian, well-educated, and relatively affluent pregnant women in Toronto, Canada, are iodine sufficient, perhaps due to universal salt iodization and/or other dietary and lifestyle factors.

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Iodine Concentration in Milk Sampled from Canadian Farms

Castro

Berthiaume

Laffey

et al. 2010

Journal of Food Protection

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A study was conducted to determine the iodine concentration in milk and the relationship between that concentration and milking and feeding management practices. Milk samples were collected from the bulk tanks of 501 farms in all provinces of Canada. With a view to obtaining further information about farm management, a questionnaire was completed at each of the selected farms. Total iodine concentration (organic and inorganic) in the milk was determined using inductively coupled plasma mass spectrometry. The farms were grouped for each of the variables and, based on significant differences in iodine concentrations, 15 variables were selected for further analysis. A general linear model was fitted, with milk iodine as the response variable to main and two-way interaction effects. The mean iodine concentration in Canadian milk was 304 ± 8.4 μg/kg, with concentrations ranging from 54 to 1,902 μg/kg. Analysis of the questionnaire data suggested that component feeding was associated with lower iodine levels in milk than the levels obtained with total mixed rations. Neither the use of mineral supplementation nor the form of supplementation affected iodine levels in milk. Washing and dipping the teats before milking affected iodine in milk. The method of application of the teat sanitizers appears to be important, given that spray applications (inline or hand spraying) were associated with higher levels than those observed with the dip-cup procedure. In conclusion, Canadian milk iodine concentration varies considerably and appears to be influenced by feeding and milking practices.

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Iodine content of Canadian retail milk samples II. After the ethylenediamine dihydroiodide ban

Cited by 3 publications

References 12 publications

Iodine in Raw and Pasteurized Milk of Dairy Cows Fed Different Amounts of Potassium Iodide

Iodine in Raw and Pasteurized Milk of Dairy Cows Fed Different Amounts of Potassium Iodide

Iodine Nutrition During Pregnancy in Toronto, Canada

Iodine Concentration in Milk Sampled from Canadian Farms

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