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Kelliher L, Kiely ME, Hennessy Á. Development and validation of a food frequency questionnaire to assess habitual iodine intake among women of childbearing age. J Hum Nutr Diet 2024; 37:633-642. [PMID: 38368606 DOI: 10.1111/jhn.13289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 01/15/2024] [Accepted: 01/23/2024] [Indexed: 02/20/2024]
Abstract
BACKGROUND Adequate iodine status is critical for thyroid hormone synthesis, which is essential for foetal brain development. Suboptimal iodine status has been reported in young women across Europe. Although urinary iodine concentration (UIC) is a good indicator of recent exposure, it does not reflect habitual iodine intake. This study aimed to develop and validate an iodine-specific food frequency questionnaire (I-FFQ) to assess habitual intake in Irish women aged 18-50 years. METHODS A 47-item interviewer-administered I-FFQ, informed by national food consumption data on Irish women aged 18-35 years, was developed and validated in a study of 100 nonpregnant women using a 4-day weighed food diary (FD) and UIC as the reference methods. Correlation, cross-classification and Bland-Altman analyses were used to assess agreement and bias between the I-FFQ and FD. Validity coefficients were calculated using the method of triads. RESULTS Median (interquartile range [IQR]) UIC was 82 (49, 139) µg/L. Median (IQR) intakes were 161 (106, 217) and 133 (98, 182) µg/day for the I-FFQ and FD, respectively (p = 0.001). Estimates were moderately correlated (r = 0.434), and the I-FFQ classified 89% of participants into the same or adjacent tertile of intake as the FD. Validity coefficients for the I-FFQ, FD and UIC were 0.542, 0.800 and 0.228, respectively. Though repeatability analyses 10 weeks later (n = 69) showed slight differences in estimates of intake (I-FFQ1: 164 (104, 210) µg/day; I-FFQ2: 132 (67, 237) µg/day), intakes were highly correlated between administrations (r = 0.627, p = 0.001). CONCLUSIONS The I-FFQ provides a reasonable estimate of habitual iodine intake in young women.
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Affiliation(s)
- Lisa Kelliher
- School of Food and Nutritional Sciences, University College Cork, Cork, Republic of Ireland
- INFANT Research Centre, University College Cork, Cork, Republic of Ireland
| | - Mairead E Kiely
- School of Food and Nutritional Sciences, University College Cork, Cork, Republic of Ireland
- INFANT Research Centre, University College Cork, Cork, Republic of Ireland
| | - Áine Hennessy
- School of Food and Nutritional Sciences, University College Cork, Cork, Republic of Ireland
- INFANT Research Centre, University College Cork, Cork, Republic of Ireland
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Azorín I, Madrid J, Martínez-Miró S, López M, López MB, López MJ, Hernández F. Combined Supplementation of Two Selenium Forms (Organic and Inorganic) and Iodine in Dairy Cows' Diet to Obtain Enriched Milk, Cheese, and Yogurt. Animals (Basel) 2024; 14:1373. [PMID: 38731376 PMCID: PMC11083049 DOI: 10.3390/ani14091373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/27/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024] Open
Abstract
This study evaluated the effects of dietary supplementation in dairy cows with two Se forms (organic and inorganic) and I at the maximum levels permitted in the European Union, with the aim to obtain naturally enriched milk and derived products. A total of 20 Holstein Friesian cows in lactation were fed 2 diets for 64 days: a control diet with a supply of 0.57 mg of inorganic Se and 0.57 mg of I per kg of ration in dry matter (DM), and an experimental diet (SeI) with a supply of 0.34 mg of inorganic Se, 0.23 mg of organic Se, and 5.68 mg of I per kg of ration in DM. The SeI diet did not modify the performance or, in general, the metabolic profile of cows. Se and I levels in milk were affected by diet type and time of measurement (p < 0.01). Thus, a marked increase of both microminerals was evident between the beginning and the end of the test, when the SeI diet was administered. For Se, this increase ranged from 1.95 to 3.29 μg/100 g of milk; and for I, from 19.69 to 110.06 μg/100 g of milk. The SeI diet increased (p < 0.01) the Se and I content in the cheese, reaching levels of 16.4 μg/100 g for Se and 269.7 μg/100 g for I. An increase in I was observed in yogurt from the SeI diet (p < 0.001). The supplementation of two forms of Se and I in the cows' ration, at the levels evaluated, produced milk and dairy products enriched in these microelements without altering their quality parameters. However, a responsible intake of these products is necessary to avoid risks of deficiencies or excesses that could negatively affect the health of consumers.
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Affiliation(s)
- Irene Azorín
- Department of Animal Production, Faculty of Veterinary, Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, 30100 Murcia, Spain; (I.A.); (S.M.-M.); (M.L.); (M.J.L.); (F.H.)
| | - Josefa Madrid
- Department of Animal Production, Faculty of Veterinary, Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, 30100 Murcia, Spain; (I.A.); (S.M.-M.); (M.L.); (M.J.L.); (F.H.)
| | - Silvia Martínez-Miró
- Department of Animal Production, Faculty of Veterinary, Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, 30100 Murcia, Spain; (I.A.); (S.M.-M.); (M.L.); (M.J.L.); (F.H.)
| | - Marina López
- Department of Animal Production, Faculty of Veterinary, Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, 30100 Murcia, Spain; (I.A.); (S.M.-M.); (M.L.); (M.J.L.); (F.H.)
| | - María Belén López
- Department of Food Technology, Nutrition and Bromatology, Faculty of Veterinary, Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, 30100 Murcia, Spain;
| | - Miguel José López
- Department of Animal Production, Faculty of Veterinary, Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, 30100 Murcia, Spain; (I.A.); (S.M.-M.); (M.L.); (M.J.L.); (F.H.)
| | - Fuensanta Hernández
- Department of Animal Production, Faculty of Veterinary, Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, 30100 Murcia, Spain; (I.A.); (S.M.-M.); (M.L.); (M.J.L.); (F.H.)
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Lundquist H, Hess J, Comeau M, Slavin J. Cow milk is an important source of iodine for prenatal health, and switching to plant-based milk can lead to iodine insufficiencies. JDS COMMUNICATIONS 2024; 5:181-184. [PMID: 38646574 PMCID: PMC11026965 DOI: 10.3168/jdsc.2023-0424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 12/10/2023] [Indexed: 04/23/2024]
Abstract
Iodine insufficiencies are common among many populations, particularly pregnant women. One of the main functions of iodine is making thyroid hormone. The 2 main hormones that iodine influences are triiodothyronine and thyroxine. Thyroid hormone affects metabolism of most tissues. For the average adult, the recommended dietary allowance (RDA) for iodine is 150 µg. During certain stages of life, such as pregnancy, lactation, and infancy, the importance of iodine is even greater as it supports brain, bone, and organ development. The RDA for iodine during pregnancy is 220 µg and, during breastfeeding, the RDA is 290 µg. Consuming enough iodine in the diet during pregnancy helps support fetal neurodevelopment. Iodine is found in several food sources such as seafood and iodized salt; however, dairy products are one of the major sources of iodine in American diets. It is important to note that only bovine milk products are rich in this mineral. One cup of milk provides 39% and 57% of the daily iodine needs for the average adult woman and pregnant woman, respectively. As the Dietary Guidelines for Americans (DGA) recommend limiting sodium intake, which includes iodized salt, dairy may be an especially important source of iodine. However, according to the USDA, about 90% of the US population does not meet the dairy recommendations presented in the DGA. In recent years, plant-based diets have received a lot of attention. A market for plant-based milk alternatives has grown and includes a variety of options such as almond, soy, and oat milk. Plant-based milks do not naturally contain iodine and are typically not fortified with iodine. Women of childbearing age who drink plant-based milks instead of cow milk have lower urinary iodine concentrations than women who consume cow milk. This review will focus on the importance of iodine in the diet to support prenatal health, lactation, and infant health.
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Affiliation(s)
- Hallie Lundquist
- Department of Food Science and Nutrition, College of Food Agricultural and Natural Resource Sciences, University of Minnesota–Twin Cities, St. Paul, MN 55108
| | - Julie Hess
- United States Department of Agriculture, Grand Forks, ND 58203
| | - Madeline Comeau
- United States Department of Agriculture, Grand Forks, ND 58203
| | - Joanne Slavin
- Department of Food Science and Nutrition, College of Food Agricultural and Natural Resource Sciences, University of Minnesota–Twin Cities, St. Paul, MN 55108
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Guerra A, Costa A, De Marchi M, Righi F, Simoni M, Manuelian CL. The effects of dietary iodine content, milking system, and farming practices on milk iodine concentration and quality traits. J Dairy Sci 2024; 107:2143-2155. [PMID: 37977439 DOI: 10.3168/jds.2023-23989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 10/29/2023] [Indexed: 11/19/2023]
Abstract
Various management practices can influence milk quality traits in dairy cattle. As an example, an increasing investment in automatic milking system to substitute milking parlors has been observed in the last 2 decades in dairy farms which could have affected certain bulk milk quality traits. What is more, milking practices can also affect certain milk parameters; as an example, teat disinfectants containing I are used in commercial farms where pre- or postdipping is performed, leading to presence of some I in the bulk milk. However, this trace mineral is also supplied in cows' diet to fulfill their nutritional requirements, partly contributing to the milk I final concentration. Therefore, the aim of this study was to evaluate the sources of variation of milk I along with other traditional milk quality traits. A total of 91 dairy farms in northeastern Italy were enrolled in the study. In each farm, diet and bulk milk samples were collected on the same day for chemical analysis. Concentration of I, in particular, was determined in both milk and feed with gold standard. Pearson correlations were calculated among the traits available for milk and diet, and a general linear model was used to test significance of fixed effects (feeding system, milking system, farming system, herd size, herd stage of lactation, and sampling month) on milk quality traits including the I concentration. In the case of milk I, diet I and presence of I-based predipping and postdipping teat disinfect application were also tested as fixed effects. Results showed a positive linear correlation between milk and diet I content (correlation coefficient [r] = 0.78). Although milk I was also positively correlated with lactose content (r = 0.25), dietary I was not correlated with other milk traits. Milk I content was significantly affected by dietary I, I-based predipping teat disinfectant application, and herd composition. Compared with conventional farms, organic farms showed lower protein content and greater somatic cell score (SCS) but similar milk I. Milking system significantly affected only lactose content and SCS of milk. Sampling month was only significant for milk urea nitrogen and herd composition, feeding system, herd size, and herd average days in milk did not modify milk gross composition and SCS. In conclusion, dietary supply of I is the main factor affecting milk I concentration and findings suggest that I level in milk can be naturally improved in dairy cows by modulating the I content in the diet administered. However, further research is needed to evaluate the effect of I-based sanitizers on milk I.
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Affiliation(s)
- Alberto Guerra
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Legnaro (PD), Italy
| | - Angela Costa
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell'Emilia (BO), Italy
| | - Massimo De Marchi
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, 35020 Legnaro (PD), Italy
| | - Federico Righi
- Department of Veterinary Science, University of Parma, 43126 Parma, Italy
| | - Marica Simoni
- Department of Veterinary Science, University of Parma, 43126 Parma, Italy.
| | - Carmen L Manuelian
- Group of Ruminant Research (G2R), Department of Animal and Food Sciences, Universitat Autònoma de Barcelona (UAB), 08193, Bellaterra, Spain
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Lean IJ, Golder HM. Milk as an indicator of dietary imbalance. Aust Vet J 2024; 102:19-25. [PMID: 37779436 DOI: 10.1111/avj.13294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 09/10/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND Milk provides a readily available diagnostic fluid collected daily or more frequently on an individual animal or herd basis. Milk, as an aggregated sample in bulk tank milk (BTM) represents the status of a herd instead of a single animal. In this review, we examine the potential for milk to predict risks to efficient production, reproductive success, and health on the individual cow and herd level. FINDINGS For many conditions related to disorders of metabolism including hyperlipdaemia and ketonaemia, improved individual cow milk testing may allow a temporally useful detection of metabolic disorder that can target intervention. However, the extension of these tests to the BTM is made more difficult by the tight temporal clustering of disorder to early lactation and the consequent mixing of cows at even moderately different stages of lactation. Integrating herd recording demographic information with Fourier-transformed mid-infrared spectra (FT-MIR) can provide tests that are useful to identify cows with metabolic disorders. The interpretation of BTM urea and protein content provides useful indications of herd nutrition. These may provide indicators that encourage further investigations of nutritional influences on herd fertility but are unlikely to provide strong diagnostic value. The fat-to-protein ratio has a high specificity, but poor sensitivity for detection of fibre insufficiency and acidosis on an individual cow basis. Selenium, zinc, β-carotene, and vitamin E status of the herd can be determined using BTM. CONCLUSIONS There appears to be increasing potential for the use of milk as a diagnostic fluid as more in-parlour tests become available for individual cows. However, the BTM appears to have under-utilised potential for herd monitoring.
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Grants
- This paper is part of Dairy UP (www.dairyup.com.au), an industry driven program led by the University of Sydney's Dairy Research Foundation (DRF, Camden, NSW, Australia); co-delivered together with Scibus (Camden, NSW, Australia), the New South Wales Department of Primary Industry (Orange, NSW, Australia), and Dairy Australia (Southbank, VIC, Australia); and supported by the NSW Government, Australian Fresh Milk Holding Ltd. (Gooloogong, NSW, Australia), Bega Cheese (Bega, NSW, Australia), Dairy Australia (Southbank, VIC, Australia, DairyNSW (Camden, NSW, Australia), DRF (Camden, NSW, Australia), eastAUSmilk (Brisbane, QLD), Local Land Services (Hunter; Tocal, NSW, Australia), Leppington Pastoral Co. (Bringelly, NSW, Australia), Norco Dairy Co-Op (South Lismore, NSW, Australia), NSW Farmers (St Leonards, NSW, Australia), the NSW Department of Primary Industries (Menangle, NSW, Australia), Scibus, and South East Local Land Services (Goulburn, NSW, Australia).
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Affiliation(s)
- I J Lean
- Scibus, Camden, New South Wales, Australia
- Dairy UP, The University of Sydney, Camden, New South Wales, Australia
| | - H M Golder
- Scibus, Camden, New South Wales, Australia
- Dairy UP, The University of Sydney, Camden, New South Wales, Australia
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Visentin E, Niero G, De Marchi M. Assessment of energy dispersive X-ray fluorescence (ED-XRF) for quantification of iodine in non-lyophilized milk. Food Chem 2023; 429:136892. [PMID: 37478602 DOI: 10.1016/j.foodchem.2023.136892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/29/2023] [Accepted: 07/13/2023] [Indexed: 07/23/2023]
Abstract
Iodine represents a fundamental element for human health, with particular regard to thyroid function. Dietary intake of milk naturally rich in iodine becomes of primary importance in the prevention of syndromes related to iodine deficiency. The concentration of iodine in milk is characterized by wide variability, mainly related to animal feed and level of mineral supplementation. Therefore, there is interest in the development of fast analytical techniques which are able to predict milk iodine concentration. The aim of the present study was to investigate the effectiveness of energy-dispersive X-ray fluorescence (ED-XRF) for the prediction of iodine in cow milk. Results showed moderate accuracy of the ED-XRF technique, with a coefficient of determination in cross validation of 0.60. This study represents a first contribution towards the possibility to discriminate milk with high or low iodine concentration, as an essential preliminary step for the introduction into the market of naturally fortified milk.
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Affiliation(s)
- E Visentin
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro, PD, Italy
| | - G Niero
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro, PD, Italy.
| | - M De Marchi
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro, PD, Italy
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Qin Y, Cifelli CJ, Agarwal S, Fugoni VL. Dairy food consumption is beneficially linked with iodine status in US children and adults: National Health and Nutrition Examination Surveys 2001-2018. Public Health Nutr 2023; 26:1828-1839. [PMID: 37092715 PMCID: PMC10478070 DOI: 10.1017/s136898002300071x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 02/06/2023] [Accepted: 04/01/2023] [Indexed: 04/25/2023]
Abstract
OBJECTIVES The objective of this study was to determine the association between the consumption of dairy foods with urinary iodine concentration (UIC) and iodine deficiency risk in a nationally representative sample of the US population. DESIGN, SETTING AND PARTICIPANTS 24-hour dietary recall data and laboratory data for UIC (μg/l) from subjects 2+ years old US population participating in National Health and Nutrition Examination Surveys 2001-2018 were used (n 26 838) for analyses after adjusting for demographic covariates. Significant associations were assessed at P < 0·05. RESULTS Mean intakes of total dairy were 2·21, 2·17 and 1·70 cup equivalents (cup eq) among those 2-8, 9-18 and 19+ years, respectively. Of the dairy components, intake of milk was highest followed by cheese and yogurt for all age groups. Total dairy intakes were positively associated with UIC among those 2-8 years (β = 29·9 ± 9·9 μg/l urine/cup eq dairy) and 9-18 years (β = 26·0 ± 4·8 μg/l urine/cup eq dairy) but not associated among those 19+ years. Total dairy intakes were associated with lowered risks (30 %, 21 % and 20 % for among 2-8, 9-18 and 19+ years, respectively) of being classified as iodine insufficient (UIC < 100 μg/l) or lowered risk (47 %, 30 % and 26 % among 2-8, 9-18 and 19+ years, respectively) of being classified as iodine severely deficient (UIC < 20 μg/l). CONCLUSIONS The results indicate that dairy foods are beneficially associated with UIC and lowered iodine deficiency risk.
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Affiliation(s)
- Yue Qin
- Department of Nutrition Science, Purdue University, West Lafayette, IN47906, USA
| | | | - Sanjiv Agarwal
- NutriScience LLC, 901 Heatherwood Drive, East Norriton, PA19403, USA
| | - Victor L Fugoni
- Nutrition Impact, LLC, 9725 D Drive North, Battle Creek, MI49014, USA
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Craig WJ, Messina V, Rowland I, Frankowska A, Bradbury J, Smetana S, Medici E. Plant-Based Dairy Alternatives Contribute to a Healthy and Sustainable Diet. Nutrients 2023; 15:3393. [PMID: 37571331 PMCID: PMC10421454 DOI: 10.3390/nu15153393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/21/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Plant-based foods are increasing in popularity as more and more people are concerned about personal and planetary health. The consumption of plant-based dairy alternatives (PBDAs) has assumed a more significant dietary role in populations shifting to more sustainable eating habits. Plant-based drinks (PBDs) made from soya and other legumes have ample protein levels. PBDs that are appropriately fortified have adequate levels of important vitamins and minerals comparable to dairy milk. For the PBDs examined, the greenhouse gas emissions were diminished by 59-71% per 250 mL, and the land use and eutrophication impact was markedly less than the levels displayed by dairy milk. The water usage for the oat and soya drinks, but not rice drinks, was substantially lower compared to dairy milk. When one substitutes the 250 mL serving of dairy milk allowed within the EAT Lancet Planetary Health Diet for a fortified plant-based drink, we found that the nutritional status is not compromised but the environmental footprint is reduced. Combining a nutrient density score with an environmental index can easily lead to a misclassification of food when the full nutrition profile is not utilized or only a selection of environmental factors is used. Many PBDAs have been categorized as ultra-processed foods (UPFs). Such a classification, with the implied adverse nutritional and health associations, is inconsistent with current findings regarding the nutritional quality of such products and may discourage people from transitioning to a plant-based diet with its health and environmental advantages.
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Affiliation(s)
- Winston J Craig
- Center for Nutrition, Healthy Lifestyle, and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA 93254, USA
| | - Virginia Messina
- Nutrition Consultant, Nutrition Matters, Inc., Pittsfield, MA 01201, USA
| | - Ian Rowland
- Department of Food and Nutritional Sciences, University of Reading, Reading RG6 6DH, UK
| | - Angelina Frankowska
- Independent Research Consultant, Environmental Sustainability Assessment, Bedford MK45 4BX, UK
| | - Jane Bradbury
- School of Medicine, Edge Hill University, Ormskirk L39 4QP, UK
| | - Sergiy Smetana
- German Institute of Food Technologies (DIL e.v.), 49610 Quakenbrueck, Germany
| | - Elphee Medici
- Nutrition & Sustainable Diets Consultant, Nutrilicious Ltd., London N2 0EF, UK
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Machado A, Gonçalves C, Moreira P, Pinho O, Padrão P, Silva-Santos T, Rodrigues M, Norton P, Bordalo AA. Iodine intake assessment in the staff of a Porto region university (Portugal): the iMC Salt trial. Eur J Nutr 2023:10.1007/s00394-023-03149-1. [PMID: 37079158 PMCID: PMC10117252 DOI: 10.1007/s00394-023-03149-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 04/07/2023] [Indexed: 04/21/2023]
Abstract
PURPOSE Iodine deficiency disorder (IDD) is an ongoing worldwide recognized problem with over two billion individuals having insufficient iodine intake. School-aged children and pregnant women are often target groups for epidemiological studies, but there is a lack of knowledge on the general adult population. The aim of this study was to assess the iodine status among a Portuguese public university staff as a proxy for the adult working population. METHODS The population study covered 103 adults within the iMC Salt randomized clinical trial, aged 24-69 years. Urinary iodine concentration was measured spectrophotometrically using the Sandell-Kolthoff reaction. Iodine food intake was assessed using a 24-h dietary recall. The contribution of discretionary salt to the iodine daily intake was assessed through 24-h urinary sodium excretion (UIE) and potentiometric iodine determination of household salt. RESULTS The mean urine volume in 24 h was 1.5 L. The median daily iodine intake estimated from 24-h UIE was 113 µg/day, being lower among women (p < 0.05). Only 22% of participants showed iodine intake above the WHO-recommended cutoff (150 µg/day). The median daily iodine intake estimated from the 24-h dietary recall was 58 µg/day (51 and 68 µg/day in women and men, respectively). Dairy, including yoghurt and milk products, were the primary dietary iodine source (55%). Iodine intake estimated from 24-h UIE and 24-h dietary recall was moderately correlated (Spearman rank correlation coefficient r = 0.34, p < 0.05). The average iodine concentration in household salt was 14 mg I/kg, with 45% of the samples below the minimum threshold preconized by WHO (15 mg I/kg). The contribution of discretionary salt to the daily iodine intake was around 38%. CONCLUSION This study contributes new knowledge about iodine status in Portuguese working adults. The results revealed moderate iodine deficiency, particularly in women. Public health strategies and monitoring programs are needed to ensure iodine adequacy in all population groups.
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Affiliation(s)
- Ana Machado
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal.
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Novo Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal.
| | - Carla Gonçalves
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, 4050-091, Porto, Portugal
- ITR - Laboratory for Integrative and Translational Research in Population Health, Rua das Taipas 135, 4050-600, Porto, Portugal
- CITAB - Centre for the Research and Technology of Agro-Environmental and Biological Sciences, 5001-801, Vila Real, Portugal
| | - Pedro Moreira
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, 4050-091, Porto, Portugal
- ITR - Laboratory for Integrative and Translational Research in Population Health, Rua das Taipas 135, 4050-600, Porto, Portugal
- Faculty of Nutrition and Food Sciences, University of Porto, 4099-002, Porto, Portugal
| | - Olívia Pinho
- Faculty of Nutrition and Food Sciences, University of Porto, 4099-002, Porto, Portugal
- LAQV/REQUIMTE - Laboratório de Bromatologia e Hidrologia, Departamento de Ciências Químicas, Universidade do Porto, Porto, Portugal
| | - Patrícia Padrão
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, 4050-091, Porto, Portugal
- ITR - Laboratory for Integrative and Translational Research in Population Health, Rua das Taipas 135, 4050-600, Porto, Portugal
- Faculty of Nutrition and Food Sciences, University of Porto, 4099-002, Porto, Portugal
| | - Tânia Silva-Santos
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, 4050-091, Porto, Portugal
- ITR - Laboratory for Integrative and Translational Research in Population Health, Rua das Taipas 135, 4050-600, Porto, Portugal
| | - Micaela Rodrigues
- Faculty of Nutrition and Food Sciences, University of Porto, 4099-002, Porto, Portugal
| | - Pedro Norton
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, 4050-091, Porto, Portugal
- Departamento de Saúde Ocupacional, Centro Hospitalar Universitário São João, Porto, Portugal
| | - Adriano A Bordalo
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Novo Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal
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Niero G, Visentin G, Censi S, Righi F, Manuelian CL, Formigoni A, Mian C, Bérard J, Cassandro M, Penasa M, Moore S, Costa A, De Marchi M. Invited review: Iodine level in dairy products-A feed-to-fork overview. J Dairy Sci 2023; 106:2213-2229. [PMID: 36870838 DOI: 10.3168/jds.2022-22599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 11/21/2022] [Indexed: 03/06/2023]
Abstract
The theme of iodine in the dairy sector is of particular interest due to the involvement and the interconnection of several stakeholders along the dairy food chain. Iodine plays a fundamental role in animal nutrition and physiology, and in cattle it is an essential micronutrient during lactation and for fetal development and the calf's growth. Its correct use in food supplementation is crucial to guarantee the animal's recommended daily requirement to avoid excess intake and long-term toxicity. Milk iodine is fundamental for public health, being one of the major sources of iodine in Mediterranean and Western diets. Public authorities and the scientific community have made great efforts to address how and to what extent different drivers may affect milk iodine concentration. The scientific literature concurs that the amount of iodine administered through animal feed and mineral supplements is the most important factor affecting its concentration in milk of most common dairy species. Additionally, farming practices related to milking (e.g., use of iodized teat sanitizers), herd management (e.g., pasture vs. confinement), and other environmental factors (e.g., seasonality) have been identified as sources of variation of milk iodine concentration. Overall, the aim of this review is to provide a multilevel overview on the mechanisms that contribute to the iodine concentration of milk and dairy products.
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Affiliation(s)
- G Niero
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - G Visentin
- Department of Veterinary Medical Sciences, Alma Mater Studiorum, University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano dell'Emilia, Italy
| | - S Censi
- Department of Medicine, Endocrinology Unit, University of Padova, 35121 Padova, Italy
| | - F Righi
- Department of Veterinary Science, University of Parma, Via del Taglio 10, 43126 Parma, Italy
| | - C L Manuelian
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - A Formigoni
- Department of Veterinary Medical Sciences, Alma Mater Studiorum, University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano dell'Emilia, Italy
| | - C Mian
- Department of Medicine, Endocrinology Unit, University of Padova, 35121 Padova, Italy
| | - J Bérard
- Agroscope, Division Animal Production Systems and Animal Health, 1725 Posieux, Switzerland
| | - M Cassandro
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy; Italian Holstein, Brown and Jersey Association, Via Bergamo 292, 26100 Cremona, Italy
| | - M Penasa
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - S Moore
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
| | - A Costa
- Department of Veterinary Medical Sciences, Alma Mater Studiorum, University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano dell'Emilia, Italy.
| | - M De Marchi
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro, Italy
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Qin N, Pétursdóttir ÁH, Humphries DJ, Desnica N, Newton EE, Vanhatalo A, Halmemies-Beauchet-Filleau A, Bell L, Givens DI, Juniper DT, Gunnlaugsdóttir H, Stergiadis S. Mineral concentrations in milk from cows fed seaweed (Saccharina latissima) under different basal protein supplementation. Food Chem 2023; 403:134315. [PMID: 36183466 DOI: 10.1016/j.foodchem.2022.134315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 08/31/2022] [Accepted: 09/15/2022] [Indexed: 11/18/2022]
Abstract
Sixteen multiparous Holstein cows in four blocks of 4 × 4 Latin square over 4-week experimental periods were used to study the effects of seaweed (Saccharina latissima) supplement (with/without) and protein source (rapeseed meal (RSM)/wheat distiller's grain (WDG)) on milk mineral concentrations. Dietary treatments did not affect milk production and basic composition. Feeding seaweed slightly decreased milk Ca and Cu concentrations; whilst increased (by 3.3-fold) milk iodine (I) concentration, due to a higher dietary I supply. Substitution of WDG with RSM increased feed-to-milk transfer of Ca, Na, and Se and decreased that of Mg, P, Fe, and Mn; but only reduced milk Mn and I concentrations (the latter by 27 % as a potential result of increased glucosinolate intake). Seaweed supplement can improve milk I content when cows' I supply/availability is limited, but care should be taken to avoid excess milk I contents that may pose nutritional risks for young children.
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Affiliation(s)
- Nanbing Qin
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | | | - David J Humphries
- Centre for Dairy Research, School of Agriculture, Policy and Development, University of Reading, Hall Farm House Church Ln, Reading RG2 9HX, United Kingdom
| | | | - Eric E Newton
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | - Aila Vanhatalo
- Department of Agricultural Sciences, University of Helsinki, FI-00014, Finland
| | | | - Luke Bell
- Department of Crop Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | - D Ian Givens
- Institute for Food, Nutrition and Health, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | - Darren T Juniper
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | - Helga Gunnlaugsdóttir
- Matís ltd, Vínlandsleið 12, Reykjavík 113, Iceland; Faculty of Food Science and Nutrition, School of Health Sciences, University Iceland, 102 Reykjavik, Iceland
| | - Sokratis Stergiadis
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom.
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12
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Newton EE, Pétursdóttir ÁH, Beauclercq S, Clarke J, Desnica N, Stergiadis S. Variation in macrominerals and trace elements in cows' retail milk and implications for consumers nutrition. Food Chem 2023; 418:135809. [PMID: 36963140 DOI: 10.1016/j.foodchem.2023.135809] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/17/2023] [Accepted: 02/25/2023] [Indexed: 03/06/2023]
Abstract
Based on previous farm-level studies, this study hypothesised that production system (conventional, CON; organic, ORG; channel island, CHA) and season would cause variation in the concentrations of macrominerals and trace elements in retail milk. On average, milk retained its status as an excellent source of Ca, P, I, and Mo across different demographics, and a very good source of K, Mg, and Zn for children. Compared with CON and ORG, CHA milk contained higher concentrations of Ca, Mg, P, Cu, Mn, and Zn; and lower concentrations of K and I. Macrominerals did not show a clear seasonal pattern but trace elements were all at lower concentrations during the typical grazing season. Variation in mineral concentrations can have implications to Ca and P supply in children, and I and Zn supply across different consumer demographics; while the seasonal variation was more pronounced than that associated with production system.
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Affiliation(s)
- Eric E Newton
- University of Reading, School of Agriculture, Policy and Development, Department of Animal Sciences, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | | | - Stephane Beauclercq
- University of Reading, School of Agriculture, Policy and Development, Department of Animal Sciences, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | - James Clarke
- University of Reading, School of Agriculture, Policy and Development, Department of Animal Sciences, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | | | - Sokratis Stergiadis
- University of Reading, School of Agriculture, Policy and Development, Department of Animal Sciences, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom.
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13
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Optimizing Growth: The Case for Iodine. Nutrients 2023; 15:nu15040814. [PMID: 36839172 PMCID: PMC9959690 DOI: 10.3390/nu15040814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/29/2023] [Accepted: 02/03/2023] [Indexed: 02/08/2023] Open
Abstract
Iodine is an essential micronutrient and component of thyroid hormone. An adequate dietary iodine intake is critical to maintain and promote normal growth and development, especially during vulnerable life stages such as pregnancy and early infancy. The role of iodine in cognitive development is supported by numerous interventional and observational studies, and when iodine intake is too low, somatic growth is also impaired. This can be clearly seen in cases of untreated congenital hypothyroidism related to severe iodine deficiency, which is characterized, in part, by a short stature. Nevertheless, the impact of a less severe iodine deficiency on growth, whether in utero or postnatal, is unclear. Robust studies examining the relationship between iodine and growth are rarely feasible, including the aspect of examining the effect of a single micronutrient on a process that is reliant on multiple nutrients for optimal success. Conversely, excessive iodine intake can affect thyroid function and the secretion of optimal thyroid hormone levels; however, whether this affects growth has not been examined. This narrative review outlines the mechanisms by which iodine contributes to the growth process from conception onwards, supported by evidence from human studies. It emphasizes the need for adequate iodine public health policies and their robust monitoring and surveillance, to ensure coverage for all population groups, particularly those at life stages vulnerable for growth. Finally, it summarizes the other micronutrients important to consider alongside iodine when seeking to assess the impact of iodine on somatic growth.
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14
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Denholm S, McNeilly T, Bashir S, Mitchell M, Wall E, Sneddon A. Correlations of milk and serum element concentrations with production and management traits in dairy cows. J Dairy Sci 2022; 105:9726-9737. [PMID: 36207186 PMCID: PMC9720353 DOI: 10.3168/jds.2021-20521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 07/19/2022] [Indexed: 11/06/2022]
Abstract
The present study investigated the potential consequences, positive or negative, that selection for favorable production-related traits may have on concentrations of vitamin B12 and key chemical elements in dairy cow milk and serum and the possible impact on milk healthiness, and associated benefits, for the dairy product consumer. Milk and serum samples (950 and 755, respectively) were collected from Holstein-Friesian dairy cows (n = 479) on 19 occasions over a 59-mo period, generating 34,258 individual records, and analyzed for concentrations of key trace and quantity elements, heavy metals, and milk vitamin B12. These data were then matched to economically important production data (milk, fat, and protein yield) and management data (dry matter intake, liveweight, and body condition score). Multivariate animal models, including full pedigree information, were used to analyze data and investigate relationships between traits of interest. Results highlighted negative genetic correlations between many quantity and trace elements in both milk and serum with production and management traits. Milk yield was strongly negatively correlated with the milk quantity elements Mg and Ca (genetic correlation between traits, ra = -0.58 and -0.63, respectively) as well as the trace elements Mn, Fe, Ni, Cu, Zn, and Mo (ra = -0.32, -0.58, -0.52, -0.40, -0.34, and -0.96, respectively); and in serum, Mg, Ca, Co, Fe, and Zn (ra = -0.50, -0.36, -0.68, -0.54, and -0.90, respectively). Strong genetic correlations were noted between dry matter intake with V (ra = 0.97), Fe (ra = -0.69), Ni (ra = -0.81), and Zn (ra = -0.75), and in serum, strong negative genetic correlations were observed between dry matter intake with Ca and Se (ra = -0.95 and -0.88, respectively). Body condition score was negatively correlated with serum P, Cu, Se, and Pb (ra = -0.45, -0.35, -0.51, and -0.64, respectively) and positively correlated with Mn, Fe, and Zn (ra = 0.40, 0.71, and 0.55, respectively). Our results suggest that breeding strategies aimed at improving economically important production-related traits would most likely result in a negative impact on levels of beneficial nutrients within milk for human consumption (such as Mg, Ca, Fe, Zn, and Se).
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Affiliation(s)
- S.J. Denholm
- Scotland's Rural College, Peter Wilson Building, King's Buildings, Edinburgh, EH9 3JG, Scotland,Corresponding author
| | - T.N. McNeilly
- Moredun Research Institute, Pentlands Science Park, Midlothian, EH26 0PZ, Scotland
| | - S. Bashir
- The Rowett Institute, University of Aberdeen, Aberdeen, AB25 2ZD, Scotland
| | - M.C. Mitchell
- Moredun Research Institute, Pentlands Science Park, Midlothian, EH26 0PZ, Scotland
| | - E. Wall
- Scotland's Rural College, Peter Wilson Building, King's Buildings, Edinburgh, EH9 3JG, Scotland
| | - A.A. Sneddon
- The Rowett Institute, University of Aberdeen, Aberdeen, AB25 2ZD, Scotland
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15
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Newton EE, Lamminen M, Ray P, Mackenzie AM, Reynolds CK, Lee MRF, Halmemies-Beauchet-Filleau A, Vanhatalo A, Stergiadis S. Macromineral and trace element concentrations in milk from Finnish Ayrshire cows fed microalgae (Spirulina platensis) and rapeseed (Brassica napus). J Dairy Sci 2022; 105:8866-8878. [PMID: 36175232 DOI: 10.3168/jds.2022-22050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 07/08/2022] [Indexed: 11/19/2022]
Abstract
Given the lack of research regarding the effect of microalgal supplementation in dairy cows on milk mineral concentrations, this study investigated the effect of feeding different protein supplements in dairy cow diets on milk, feces, and blood plasma mineral concentrations, associated milk and blood plasma transfer efficiencies, and apparent digestibility. Lactating Finnish Ayrshire cows (n = 8) were allocated at the start of the trial to 4 diets used in a replicated 4 × 4 Latin square design experiment: (1) control diet (CON), (2) a pelleted rapeseed supplement (RSS; 2,550 g/d), (3) a mixture of rapeseed and Spirulina platensis (RSAL; 1,280 g of RSS + 570 g of S. platensis per day), and (4) S. platensis (ALG; 1,130 g of S. platensis per day). In each of the 4 experimental periods, a 2-wk adaptation to the experimental diets was followed by a 7-d sampling and measurement period. Feed samples were composited per measurement period, milk, and feed samples (4 consecutive days; d 17-20), and blood plasma samples (d 21) were composited for each cow period (n = 32). Data were statistically analyzed using a linear mixed effects model with diet, period within square, square and their interaction as fixed factors, and cow within square as a random factor. Cows fed ALG were not significantly different in their milk or blood plasma mineral concentrations compared with CON, although feeding ALG increased fecal concentrations of macrominerals (Ca and Mg) and trace elements (Co, Cu, Fe, I, Mn, and Zn), and reduced their apparent digestibility, compared with CON. When compared with CON and ALG, milk from cows fed RSAL and RSS had lower milk I concentrations (-69.6 and -102.7 μg/kg of milk, respectively), but total plasma I concentrations were not affected significantly. Feeding S. platensis to dairy cows did not affect mineral concentrations in cows' blood or milk, but care should be taken when rapeseed is fed to avoid reducing milk I concentrations which may in turn reduce consumers' I intake from milk and dairy products.
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Affiliation(s)
- Eric E Newton
- School of Agriculture, Policy, and Development, University of Reading, Earley Gate, PO Box 237, RG6 6EU, Reading, United Kingdom
| | - Marjukka Lamminen
- Department of Agricultural Sciences, University of Helsinki, PO Box 28, FI-00014 Helsinki, Finland.
| | - Partha Ray
- School of Agriculture, Policy, and Development, University of Reading, Earley Gate, PO Box 237, RG6 6EU, Reading, United Kingdom; The Nature Conservancy, 4245 North Fairfax Drive, Suite 100, Arlington, VA 22203
| | - Alexander M Mackenzie
- Department of Agriculture and the Environment, Harper Adams University, Edgmond, Shropshire, TF10 8NB, Newport, United Kingdom
| | - Christopher K Reynolds
- School of Agriculture, Policy, and Development, University of Reading, Earley Gate, PO Box 237, RG6 6EU, Reading, United Kingdom
| | - Michael R F Lee
- Department of Agriculture and the Environment, Harper Adams University, Edgmond, Shropshire, TF10 8NB, Newport, United Kingdom
| | | | - Aila Vanhatalo
- Department of Agricultural Sciences, University of Helsinki, PO Box 28, FI-00014 Helsinki, Finland
| | - Sokratis Stergiadis
- School of Agriculture, Policy, and Development, University of Reading, Earley Gate, PO Box 237, RG6 6EU, Reading, United Kingdom.
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16
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de Oliveira Filho EF, Miranda M, Ferreiro T, Herrero-Latorre C, Castro Soares P, López-Alonso M. Concentrations of Essential Trace and Toxic Elements Associated with Production and Manufacturing Processes in Galician Cheese. Molecules 2022; 27:molecules27154938. [PMID: 35956892 PMCID: PMC9370589 DOI: 10.3390/molecules27154938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/01/2022] [Accepted: 08/01/2022] [Indexed: 11/16/2022] Open
Abstract
The objective of this study was to determine the trace element composition and the toxic metal residues in Galician cow’s milk cheese produced in different systems (artisan, industrial, and organic). Fourteen elements (As, Cd, Co, Cr, Cu, Fe, Hg, I, Mn, Mo, Ni, Pb, Se, and Zn) were determined in 58 representative samples of Galician cheeses by inductively coupled plasma mass spectrometry. The toxic elements were present at low concentrations, similar to those reported for other unpolluted geographical areas. The essential elements were also within the normal range in cheeses. There were no statistically significant differences between smoked and unsmoked cheeses for any of the elements. Chemometric analyses (principal component analysis and cluster analysis) revealed that the industrial cheeses produced in Galicia using the milk from intensive dairy farms were different, in terms of elemental content, from artisan and organic cheeses, in which the elemental contents were similar.
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Affiliation(s)
- Emanuel Felipe de Oliveira Filho
- Department of Veterinary Medicine/UFRPE, Rua Dom Manoel de Medeiros, Dois Irmãos, Recife 52171-900, Brazil; (E.F.d.O.F.); (P.C.S.)
- Department of Animal Pathology, Faculty of Veterinary, University of Santiago de Compostela, Campus Terra, 27002 Lugo, Spain;
| | - Marta Miranda
- Department of Anatomy, Animal Production and Clinical Veterinary Sciences, Faculty of Veterinary, University of Santiago de Compostela, Campus Terra, 27002 Lugo, Spain
- Correspondence:
| | - Tania Ferreiro
- Technological Platform: Aula de Productos Lácteos y Tecnologías Alimentarias, University of Santiago de Compostela, Campus Terra, 27002 Lugo, Spain;
| | - Carlos Herrero-Latorre
- Research Institute on Chemical and Biological Analysis, Analytical Chemistry, Nutrition and Bromatology Department, Faculty of Sciences, University of Santiago de Compostela, Campus Terra, 27002 Lugo, Spain;
| | - Pierre Castro Soares
- Department of Veterinary Medicine/UFRPE, Rua Dom Manoel de Medeiros, Dois Irmãos, Recife 52171-900, Brazil; (E.F.d.O.F.); (P.C.S.)
| | - Marta López-Alonso
- Department of Animal Pathology, Faculty of Veterinary, University of Santiago de Compostela, Campus Terra, 27002 Lugo, Spain;
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17
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Mathiaparanam S, Nori de Macedo A, Mente A, Poirier P, Lear SA, Wielgosz A, Teo KK, Yusuf S, Britz-Mckibbin P. The Prevalence and Risk Factors Associated with Iodine Deficiency in Canadian Adults. Nutrients 2022; 14:nu14132570. [PMID: 35807751 PMCID: PMC9268597 DOI: 10.3390/nu14132570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/16/2022] [Accepted: 06/17/2022] [Indexed: 02/04/2023] Open
Abstract
Iodine is a trace micronutrient that is critical for normal thyroid function and human health. Inadequate dietary intake is associated with cognitive impairment, infertility, growth retardation and iodine deficiency disorders in affected populations. Herein, we examined the prevalence of iodine deficiency in adults (median age of 61 years) based on the analysis of 24 h urine samples collected from 800 participants in four clinical sites across Canada in the Prospective Urban and Rural Epidemiological (PURE) study. Urinary iodide together with thiocyanate and nitrate were measured using a validated capillary electrophoresis assay. Protective/risk factors associated with iodine deficiency were identified using a binary logistic regression model, whereas daily urinary iodine concentration (24 h UIC, μg/L) and urinary iodine excretion (24 h UIE, μg/day) were compared using complementary statistical methods with covariate adjustments. Overall, our Canadian adult cohort had adequate iodine status as reflected by a median UIC of 111 μg/L with 11.9% of the population <50 μg/L categorized as having moderate to severe iodine deficiency. Iodine adequacy was also evident with a median 24 h UIE of 226 μg/day as a more robust metric of iodine status with an estimated average requirement (EAR) of 7.1% (< 95 μg/day) and a tolerable upper level (UL) of 1.8% (≥1100 μg/day) based on Canadian dietary reference intake values. Participants taking iodine supplements (OR = 0.18; p = 6.35 × 10−5), had greater 24 h urine volume (OR = 0.69; p = 4.07 × 10−4), excreted higher daily urinary sodium (OR = 0.71; p = 3.03 × 10−5), and/or were prescribed thyroxine (OR = 0.33; p = 1.20 × 10−2) had lower risk for iodine deficiency. Self-reported intake of dairy products was most strongly associated with iodine status (r = 0.24; p = 2.38 × 10−9) after excluding for iodine supplementation and T4 use. Participants residing in Quebec City (OR = 2.58; p = 1.74 × 10−4) and Vancouver (OR = 2.54; p = 3.57 × 10−4) were more susceptible to iodine deficiency than Hamilton or Ottawa. Also, greater exposure to abundant iodine uptake inhibitors from tobacco smoking and intake of specific goitrogenic foods corresponded to elevated urinary thiocyanate and nitrate, which were found for residents from Quebec City as compared to other clinical sites. Recent public health policies that advocate for salt restriction and lower dairy intake may inadvertently reduce iodine nutrition of Canadians, and further exacerbate regional variations in iodine deficiency risk.
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Affiliation(s)
- Stellena Mathiaparanam
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, ON L8S 4L8, Canada; (S.M.); (A.N.d.M.)
| | - Adriana Nori de Macedo
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, ON L8S 4L8, Canada; (S.M.); (A.N.d.M.)
- Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
| | - Andrew Mente
- Population Health Research Institute, McMaster University and Hamilton Health Sciences, Hamilton, ON L8L 2X2, Canada; (A.M.); (K.K.T.); (S.Y.)
| | - Paul Poirier
- Faculté de Pharmacie, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, QC G1V 4G5, Canada;
| | - Scott A. Lear
- Faculty of Health Sciences, Simon Fraser University, Burnaby and Division of Cardiology, Providence Health Care, Vancouver, BC V5A 1S6, Canada;
| | - Andreas Wielgosz
- University of Ottawa Heart Institute, Ottawa, ON K1Y 4W7, Canada;
| | - Koon K. Teo
- Population Health Research Institute, McMaster University and Hamilton Health Sciences, Hamilton, ON L8L 2X2, Canada; (A.M.); (K.K.T.); (S.Y.)
| | - Salim Yusuf
- Population Health Research Institute, McMaster University and Hamilton Health Sciences, Hamilton, ON L8L 2X2, Canada; (A.M.); (K.K.T.); (S.Y.)
| | - Philip Britz-Mckibbin
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, ON L8S 4L8, Canada; (S.M.); (A.N.d.M.)
- Correspondence:
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18
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Pehrsson PR, Roseland JM, Patterson KY, Phillips KM, Spungen JH, Andrews KW, Gusev PA, Gahche JJ, Haggans CJ, Merkel JM, Ershow AG. Iodine in foods and dietary supplements: A collaborative database developed by NIH, FDA and USDA. J Food Compost Anal 2022; 109. [DOI: 10.1016/j.jfca.2021.104369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Rami A, Saeid N, El Mzibri M, El Kari K, Idrissi M, Lahmam H, Mouzouni FZ, Mounach S, El Ammari L, Benkirane H, Al Jawaldeh A, Zimmermann MB, Aguenaou H. Prevalence of iodine deficiency among Moroccan women of reproductive age. Arch Public Health 2022; 80:147. [PMID: 35624493 PMCID: PMC9137163 DOI: 10.1186/s13690-022-00901-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 05/13/2022] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Iodine deficiency disorders (IDD) affects nearly 1.9 million people worldwide. Iodine deficiency (ID) remains a public health concern not only for pregnant women, but for women of reproductive age (WRA) as well. This study was planned to evaluate the iodine status and the prevalence of iodine deficiency in a nationally representative sample of Moroccan WRA according to their socio-economic data and living areas. METHODS This study is a cross-sectional national survey conducted on 1652 WRA aged between 18 and 49 years. Iodine status was assessed by the evaluation of the urinary iodine concentration (UIC) on spot urinary samples, using the Sandell-Kolthoff reaction, and by the estimation of iodine-rich food consumption, using a food frequency questionnaire. The World Health Organization cutoff of a median UIC of < 100 μg/l was used to define ID in the population. RESULTS The median UIC [20th- 80th] was 71.3 μg/l [37.5-123.1] and 71% of participants had UIC < 100 μg/L, indicating insufficient iodine status and mild iodine deficiency. WRA from urban and rural areas showed an UIC median of 75.94 μg/l [41.16-129.97] and 63.40 μg/l [33.81-111.68], respectively. Furthermore, ID prevalence was significantly higher in rural areas (75.6%) as compared to urban areas (67.9%) (p < 0.05). Food frequency questionnaires analyses highlighted that dairy products are the most commonly consumed iodine-rich food, reported to be consumed daily by 43.1% of WRA. Of particular interest, 83.5% of WRA reported a weekly consumption of fish. CONCLUSION ID is still a public health problem in Morocco highlighting the necessity to implement effective national program, including efficient salt iodization, effective nutritional education and awareness, to control iodine deficiency and prevent IDD development.
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Affiliation(s)
- Anass Rami
- grid.412150.30000 0004 0648 5985Laboratory of Biology, Health and Environment, Ibn Tofail University, Kenitra, Morocco ,grid.450269.cNutrition and Alimentation Unit, CNESTEN, Rabat, Morocco
| | - Naima Saeid
- grid.450269.cNutrition and Alimentation Unit, CNESTEN, Rabat, Morocco
| | | | - Khalid El Kari
- grid.450269.cNutrition and Alimentation Unit, CNESTEN, Rabat, Morocco
| | - Mohamed Idrissi
- grid.450269.cNutrition and Alimentation Unit, CNESTEN, Rabat, Morocco
| | - Houria Lahmam
- grid.412150.30000 0004 0648 5985Laboratory of Biology, Health and Environment, Ibn Tofail University, Kenitra, Morocco
| | | | - Samir Mounach
- grid.434766.40000 0004 0391 3171Ministry of Health, Rabat, Morocco
| | - Laila El Ammari
- grid.434766.40000 0004 0391 3171Ministry of Health, Rabat, Morocco
| | - Hasnae Benkirane
- grid.412150.30000 0004 0648 5985Laboratory of Biology, Health and Environment, Ibn Tofail University, Kenitra, Morocco
| | - Ayoub Al Jawaldeh
- grid.483405.e0000 0001 1942 4602World Health Organization – Regional Office for Eastern Mediterranean, P.O. Box 7608, Nasr City, Cairo Egypt
| | - Micheal Bruce Zimmermann
- grid.5801.c0000 0001 2156 2780ETH Zürich, Laboratory of Human Nutrition, Institute of Food Nutrition and Health, Department of Health Science and Technology, ETH Zürich, Zürich, Switzerland
| | - Hassan Aguenaou
- grid.412150.30000 0004 0648 5985Laboratory of Biology, Health and Environment, Ibn Tofail University, Kenitra, Morocco
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20
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Iodine Concentrations in Conventional and Organic Milk in the Northeastern U.S. DAIRY 2022. [DOI: 10.3390/dairy3020017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Milk is a major source of dietary iodine in the United States. Due to a relatively low margin of safety for iodine intake, there are concerns for both deficiency and over-exposure. Iodine concentrations of raw milk samples from farms and retail milk in the Northeastern U.S. region were compared between seasons (winter vs. summer) and farming practices (conventional vs. organic). Overall, mean iodine concentration was 46.2% higher in raw milk from conventional farms vs. organic farms. An interaction effect between season and farming practices was observed. Organic raw milk had higher iodine content in the winter than in the summer (423 ± 54 μg/L vs. 273 ± 24 μg/L), whereas conventional raw milk had higher iodine content in the summer than in the winter (618 ± 75 μg/L vs. 398 ± 27 μg/L). Milk samples from conventional farms had 2.27-fold higher average iodine concentration compared to milk coming from organic farms in the summer but did not differ in the winter. Out of 68 and 98 raw milk samples originating from conventional and organic farms, 22 (32.4%) and 19 (19.4%) respectively, had iodine concentrations > 500 µg/L, reaching as high as 1928 μg/L. In contrast, the overall mean concentration of iodine in retail milk did not differ between conventional and organic milk (345 ± 23 vs. 320 ± 42 μg/L, respectively). The current study confirms dairy milk remains to be a good source of iodine to U.S. consumers. However, dairy farms should be aware of the potential adverse health effects of excess iodine intake. Careful considerations in dairy management may be necessary to not exceed the recommended level of iodine supplementation in both conventional and organic operations at the farm level—to maintain optimal iodine concentrations in retail fluid milk accessible to the consumers.
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21
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Witard OC, Bath SC, Dineva M, Sellem L, Mulet-Cabero AI, van Dongen LH, Zheng JS, Valenzuela C, Smeuninx B. Dairy as a Source of Iodine and Protein in the UK: Implications for Human Health Across the Life Course, and Future Policy and Research. Front Nutr 2022; 9:800559. [PMID: 35223949 PMCID: PMC8866650 DOI: 10.3389/fnut.2022.800559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 01/11/2022] [Indexed: 12/03/2022] Open
Abstract
This narrative review summarizes key concepts in dairy nutrition for supporting human health throughout the life course. Milk and dairy products have been a staple component of our diet for thousands of years and provide a wide range of important nutrients that are otherwise difficult to obtain from dairy-free diets. In this review, we provide a broad perspective on the nutritional roles of iodine and dairy protein in supporting human health during pregnancy and early life, childhood and adolescence, mid- and later-life. New methodologies to identify biomarkers of dairy intake via high-throughput mass spectrometry are discussed, and new concepts such as the role of the food matrix in dairy nutrition are introduced. Finally, future policy and research related to the consumption of dairy and non-dairy alternatives for health are discussed with a view to improving nutritional status across the lifespan.
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Affiliation(s)
- Oliver C. Witard
- Centre for Human and Applied Physiological Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
- *Correspondence: Oliver C. Witard
| | - Sarah C. Bath
- Department of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Mariana Dineva
- Department of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Laury Sellem
- Hugh Sinclair Unit of Human Nutrition, Department of Food and Nutritional Science, University of Reading, Reading, United Kingdom
| | - Ana-Isabel Mulet-Cabero
- Food Innovation and Health, Quadram Institute Bioscience, Norwich Research Park, Norwich, United Kingdom
| | - Laura H. van Dongen
- Division of Human Nutrition, Wageningen University and Research Centre, Wageningen, Netherlands
| | - Ju-Sheng Zheng
- School of Life Sciences, Westlake University, Hangzhou, China
| | - Carina Valenzuela
- Faculty of Medicine, School of Human Development and Health, University of Southampton, Southampton, United Kingdom
| | - Benoit Smeuninx
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
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22
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CABRAL JF, BÁNKUTI FI, GURGEL ALC, ÍTAVO LCV, SIPPERT MR, OSORIO JAC, MARCHI FED, LOURENÇO JCS, ALMEIDA KVD, VALLOTO AA, SANTOS GTD. Iodine concentration in milk evaluated by iodized agents during milking. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.41322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Sprague M, Chau TC, Givens DI. Iodine Content of Wild and Farmed Seafood and Its Estimated Contribution to UK Dietary Iodine Intake. Nutrients 2021; 14:195. [PMID: 35011067 PMCID: PMC8747335 DOI: 10.3390/nu14010195] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 12/27/2021] [Accepted: 12/28/2021] [Indexed: 11/16/2022] Open
Abstract
Iodine is an important nutrient for human health and development, with seafood widely acknowledged as a rich source. Demand from the increasing global population has resulted in the availability of a wider range of wild and farmed seafood. Increased aquaculture production, however, has resulted in changes to feed ingredients that affect the nutritional quality of the final product. The present study assessed the iodine contents of wild and farmed seafood available to UK consumers and evaluated its contribution to current dietary iodine intake. Ninety-five seafood types, encompassing marine and freshwater fish and shellfish, of wild and farmed origins, were purchased from UK retailers and analysed. Iodine contents ranged from 427.4 ± 316.1 to 3.0 ± 1.6 µg·100 g-1 flesh wet weight (mean ± SD) in haddock (Melanogrammus aeglefinus) and common carp (Cyprinus carpio), respectively, being in the order shellfish > marine fish > freshwater fish, with crustaceans, whitefish (Gadiformes) and bivalves contributing the greatest levels. Overall, wild fish tended to exhibit higher iodine concentrations than farmed fish, with the exception of non-fed aquaculture species (bivalves). However, no significant differences were observed between wild and farmed Atlantic salmon (Salmo salar), rainbow trout (Oncorhynchus mykiss), and turbot (Psetta maxima). In contrast, farmed European seabass (Dicentrarchus labrax) and seabream (Sparus aurata) presented lower, and Atlantic halibut (Hippoglossus hippoglossus) higher, iodine levels than their wild counterparts, most likely due to the type and inclusion level of feed ingredients used. By following UK dietary guidelines for fish consumption, a portion of the highest oily (Atlantic mackerel, Scomber scombrus) and lean (haddock) fish species would provide two-thirds of the weekly recommended iodine intake (980 µg). In contrast, actual iodine intake from seafood consumption is estimated at only 9.4-18.0% of the UK reference nutrient intake (140 µg·day-1) across different age groups and genders, with females obtaining less than their male equivalents.
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Affiliation(s)
- Matthew Sprague
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling FK9 4LA, UK
| | - Tsz Chong Chau
- Institute for Food Research and Nutrition, University of Reading, Agriculture Building, P.O. Box 2376, Earley Gate, Reading RG6 6AR, UK; (T.C.C.); (D.I.G.)
| | - David I. Givens
- Institute for Food Research and Nutrition, University of Reading, Agriculture Building, P.O. Box 2376, Earley Gate, Reading RG6 6AR, UK; (T.C.C.); (D.I.G.)
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24
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Abstract
The work reported in this paper addresses the iodine nutritional deficiency that still affects a large number of people. For this purpose, we analyzed the possibility to use, as iodine vehicle, a hard typical ewe cheese, called Canestrato d'Abruzzo, derived from milk of ewes fed with an iodine-fortified diet. Both in the milk and the cheese of these animals, the iodine level was higher than that measured in sheep with a normal diet. An increase in the lactoferrin and iron content was evident in the whey derived from milk of the iodine group. Furthermore, in derived cheese, the caseins seemed more efficiently transformed in small peptides making the product more digestible and, for this reason, particularly suitable for feeding the elderly. In conclusion, the dairy products obtained from ewes fed with iodine diet contain more bioactive compounds so that they represent a useful food to prevent iodine and iron deficiency in lamb and humans.
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25
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Stergiadis S, Qin N, Faludi G, Beauclercq S, Pitt J, Desnica N, Pétursdóttir ÁH, Newton EE, Angelidis AE, Givens I, Humphries DJ, Gunnlaugsdóttir H, Juniper DT. Mineral Concentrations in Bovine Milk from Farms with Contrasting Grazing Management. Foods 2021; 10:2733. [PMID: 34829015 PMCID: PMC8620383 DOI: 10.3390/foods10112733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/03/2021] [Accepted: 11/04/2021] [Indexed: 11/19/2022] Open
Abstract
Thirty conventional and twenty-four organic dairy farms were divided into equal numbers within system groups: high-pasture, standard-pasture, and low-pasture groups. Milk samples were collected monthly for 12 consecutive months. Milk from high-pasture organic farms contained less fat and protein than standard- and low-pasture organic farms, but more lactose than low-pasture organic farms. Grazing, concentrate feed intake and the contribution of non-Holstein breeds were the key drivers for these changes. Milk Ca and P concentrations were lower in standard-pasture conventional farms than the other conventional groups. Milk from low-pasture organic farms contained less Ca than high- and standard-pasture organic farms, while high-pasture organic farms produced milk with the highest Sn concentration. Differences in mineral concentrations were driven by the contribution of non-Holstein breeds, feeding practices, and grazing activity; but due to their relatively low numerical differences between groups, the subsequent impact on consumers' dietary mineral intakes would be minor.
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Affiliation(s)
- Sokratis Stergiadis
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Earley Gate, Reading RG6 6EU, UK; (N.Q.); (G.F.); (S.B.); (J.P.); (E.E.N.); (A.E.A.); (D.T.J.)
| | - Nanbing Qin
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Earley Gate, Reading RG6 6EU, UK; (N.Q.); (G.F.); (S.B.); (J.P.); (E.E.N.); (A.E.A.); (D.T.J.)
| | - Gergely Faludi
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Earley Gate, Reading RG6 6EU, UK; (N.Q.); (G.F.); (S.B.); (J.P.); (E.E.N.); (A.E.A.); (D.T.J.)
- Georgikon Campus, Szent Istvan University, Deák Ferenc u. 16, H-8360 Keszthely, Hungary
| | - Stephane Beauclercq
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Earley Gate, Reading RG6 6EU, UK; (N.Q.); (G.F.); (S.B.); (J.P.); (E.E.N.); (A.E.A.); (D.T.J.)
| | - Joe Pitt
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Earley Gate, Reading RG6 6EU, UK; (N.Q.); (G.F.); (S.B.); (J.P.); (E.E.N.); (A.E.A.); (D.T.J.)
| | - Natasa Desnica
- Matís Ltd., Vinlandsleid 12, 113 Reykjavik, Iceland; (N.D.); (Á.H.P.); (H.G.)
| | | | - Eric E. Newton
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Earley Gate, Reading RG6 6EU, UK; (N.Q.); (G.F.); (S.B.); (J.P.); (E.E.N.); (A.E.A.); (D.T.J.)
| | - Angelos E. Angelidis
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Earley Gate, Reading RG6 6EU, UK; (N.Q.); (G.F.); (S.B.); (J.P.); (E.E.N.); (A.E.A.); (D.T.J.)
| | - Ian Givens
- Institute for Food, Nutrition and Health, University of Reading, P.O. Box 237, Earley Gate, Reading RG6 6EU, UK;
| | - David J. Humphries
- Centre for Dairy Research, School of Agriculture, Policy and Development, University of Reading, Hall Farm House, Church Ln, Reading RG2 9HX, UK;
| | - Helga Gunnlaugsdóttir
- Matís Ltd., Vinlandsleid 12, 113 Reykjavik, Iceland; (N.D.); (Á.H.P.); (H.G.)
- Faculty of Food Science and Nutrition, School of Health Sciences, University Iceland, 102 Reykjavik, Iceland
| | - Darren T. Juniper
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, P.O. Box 237, Earley Gate, Reading RG6 6EU, UK; (N.Q.); (G.F.); (S.B.); (J.P.); (E.E.N.); (A.E.A.); (D.T.J.)
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26
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Brodziak A, Wajs J, Zuba-Ciszewska M, Król J, Stobiecka M, Jańczuk A. Organic versus Conventional Raw Cow Milk as Material for Processing. Animals (Basel) 2021; 11:ani11102760. [PMID: 34679781 PMCID: PMC8532914 DOI: 10.3390/ani11102760] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 01/10/2023] Open
Abstract
Milk, as one of the basic raw materials of animal origin, must be of adequate hygienic and physicochemical quality for processing. The aim of the article was to compare the quality of raw milk from three production systems, intensive, traditional (together referred to as conventional), and organic, as material for processing, as well as the quality of products made from it. Particular attention was focused on hygienic quality (somatic cell count and total bacterial count), physical characteristics (acidity), basic nutritional value (content of dry matter, total protein, casein, fat, and lactose), content of health-promoting substances (whey proteins, fatty acids, vitamins, and minerals), and technological parameters (rennet clotting time, heat stability, and protein-to-fat ratio). Research assessing the quality of organic milk and dairy products is significantly less extensive (if available at all) than for milk from conventional production (intensive and traditional). The available reports indicate that raw milk from organic farms is more valuable, especially in terms of the content of health-promoting compounds, including vitamins, fatty acids, whey proteins, and minerals. This applies to organic dairy products as well, mainly cheese and yoghurt. This is explained by the fact that organic farming requires that animals are kept in the pasture. However, the hygienic quality of the raw milk, and often the products as well, raises some concerns; for this reason, organic milk producers should be supported in this regard, e.g., through consultancy and training in Good Hygienic Practices. Importantly, milk production in the traditional and organic systems is in line with the concept of the European Green Deal.
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Affiliation(s)
- Aneta Brodziak
- Institute of Quality Assessment and Processing of Animal Products, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (A.B.); (J.K.); (M.S.); (A.J.)
| | - Joanna Wajs
- Institute of Quality Assessment and Processing of Animal Products, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (A.B.); (J.K.); (M.S.); (A.J.)
- Correspondence: ; Tel.: +48-814456836
| | - Maria Zuba-Ciszewska
- Institute of Economics and Finance, Faculty of Social Sciences, The John Paul II Catholic University of Lublin, Racławickie 14, 20-950 Lublin, Poland;
| | - Jolanta Król
- Institute of Quality Assessment and Processing of Animal Products, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (A.B.); (J.K.); (M.S.); (A.J.)
| | - Magdalena Stobiecka
- Institute of Quality Assessment and Processing of Animal Products, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (A.B.); (J.K.); (M.S.); (A.J.)
| | - Anna Jańczuk
- Institute of Quality Assessment and Processing of Animal Products, Faculty of Animal Sciences and Bioeconomy, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland; (A.B.); (J.K.); (M.S.); (A.J.)
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27
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Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations. Foods 2021; 10:foods10071526. [PMID: 34359396 PMCID: PMC8307245 DOI: 10.3390/foods10071526] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/18/2021] [Accepted: 06/24/2021] [Indexed: 01/17/2023] Open
Abstract
This study investigated the effect of seaweed supplementation in dairy cow diets on milk yield, basic composition, and mineral concentrations. Thirty-seven Icelandic cows were split into three diet treatments: control (CON, no seaweed), low seaweed (LSW, 0.75% concentrate dry matter (DM), 13–40 g/cow/day), and high seaweed (HSW, 1.5% concentrate DM, 26–158 g/cow/day). Cows were fed the same basal diet of grass silage and concentrate for a week, and then were introduced to the assigned experimental diets for 6 weeks. The seaweed mix of 91% Ascophyllum nodosum: 9% Laminaria digitata (DM basis), feed, and milk samples were collected weekly. Data were analyzed using a linear mixed effects model, with diet, week, and their interaction as fixed factors, cow ID as random factor, and the pre-treatment week data as a covariate. When compared with CON milk, LSW and HSW milk had, respectively, less Se (−1.4 and −3.1 μg/kg milk) and more I (+744 and +1649 μg/kg milk), while HSW milk also had less Cu (−11.6 μg/kg milk) and more As (+0.17 μg/kg milk) than CON milk. The minimal changes or concentrations in milk for Se, Cu, and As cannot be associated with any effects on consumer nutrition, but care should be taken when I-rich seaweed is fed to cows to avoid excessive animal I supply and milk I concentrations.
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28
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Food sources of iodine in schoolchildren and relationship with 24-h urinary iodine excretion in Victoria, Australia. Br J Nutr 2021; 127:791-799. [PMID: 33910660 DOI: 10.1017/s0007114521001410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Dietary recalls have been used previously to identify food sources of iodine in Australian schoolchildren. Dietary assessment can provide information on the relative contributions of individual food groups which can be related to a robust objective measure of daily intake (24-h urinary iodine excretion (UIE)). In Australia, the government has mandated the use of iodised salt in breadmaking to address iodine deficiency. The aim of this study was to determine the dietary intake and food sources of iodine to assess their contribution to iodine excretion (UIE) in a sample of Australian schoolchildren. In 2011-2013, UIE was assessed using a single 24-h urine sample and dietary intake was assessed using one 24-h dietary recall in a convenience sample of primary schoolchildren from schools in Victoria, Australia. Of the 454 children with a valid recall and urine sample, 55 % were male (average age 10·1 (1·3 (sd) years). Mean UIE and dietary iodine intake were 108 (sd 54) and 172 (sd 74) μg/d, respectively. Dietary assessment indicated that bread and milk were the main food sources of iodine, contributing 27 and 25 %, respectively, to dietary iodine. Milk but not bread intake was positively associated with UIE. Multiple regression (adjusted for school cluster, age and sex) indicated that for every 100 g increase in milk consumption, there was a 3 μg/d increase in UIE (β = 4·0 (se 0·9), P < 0·001). In conclusion, both bread and milk were important contributors to dietary iodine intake; however, consumption of bread was not associated with daily iodine excretion in this group of Australian schoolchildren.
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Qin N, Faludi G, Beauclercq S, Pitt J, Desnica N, Pétursdóttir Á, Newton EE, Angelidis A, Givens I, Juniper D, Humphries D, Gunnlaugsdóttir H, Stergiadis S. Macromineral and trace element concentrations and their seasonal variation in milk from organic and conventional dairy herds. Food Chem 2021; 359:129865. [PMID: 33940467 DOI: 10.1016/j.foodchem.2021.129865] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 03/31/2021] [Accepted: 03/31/2021] [Indexed: 10/21/2022]
Abstract
To study the effects of dairy production system on milk macromineral and trace element concentrations, milk samples were collected monthly in 2019 from 43 conventional and 27 organic farms. Organic milk contained more Ca (1049.5 vs. 995.8 mg/kg), K (1383.6 vs. 1362.4 mg/kg), P (806.5 vs. 792.5 mg/kg) and Mo (73.3 vs. 60.6 μg/kg) but less Cu (52.4 vs. 60.6 μg/kg), Fe (0.66 vs 2.03 mg/kg), Mn (28.8 vs. 45.0 μg/kg), Zn (4.51 vs. 5.00 mg/kg) and Al (0.32 vs. 1.14 μg/kg) than conventional milk. Significant seasonal variation was observed in all determined minerals' concentrations. Milk I concentration was not consistently affected by production system, whereas organic milk contained less I in June and July than conventional milk. Dietary factors contributing to different milk mineral concentrations between production systems included intakes of maize silage, dry-straights and oils (higher in conventional diets), and pasture, clover and wholecrop (higher in organic diets).
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Affiliation(s)
- Nanbing Qin
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | - Gergely Faludi
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom; Hungarian University of Agriculture and Life Sciences, Georgikon Campus, Keszthely, Deák Ferenc u. 16, H-8360, Hungary
| | - Stephane Beauclercq
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | - Joe Pitt
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | | | | | - Eric E Newton
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | - Angelos Angelidis
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | - Ian Givens
- Institute for Food, Nutrition and Health, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | - Darren Juniper
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom
| | - David Humphries
- Centre for Dairy Research, School of Agriculture, Policy and Development, University of Reading, Hall Farm House, Church Ln, Reading RG2 9HX, United Kingdom
| | - Helga Gunnlaugsdóttir
- Matís ltd., Vínlandsleið 12, Reykjavík 113, Iceland; Faculty Food Science and Nutrition, University Iceland, Reykjavik, Iceland
| | - Sokratis Stergiadis
- Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading, PO Box 237, Earley Gate, Reading RG6 6EU, United Kingdom.
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30
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Timlin M, Tobin JT, Brodkorb A, Murphy EG, Dillon P, Hennessy D, O’Donovan M, Pierce KM, O’Callaghan TF. The Impact of Seasonality in Pasture-Based Production Systems on Milk Composition and Functionality. Foods 2021; 10:607. [PMID: 33809356 PMCID: PMC7998991 DOI: 10.3390/foods10030607] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/03/2021] [Accepted: 03/08/2021] [Indexed: 01/15/2023] Open
Abstract
Seasonal calving, pasture-based dairy systems are widely practiced in countries with a temperate climate and plentiful rainfall such as Ireland and New Zealand. This approach maximizes milk production from pasture and, consequently, is a low-cost, low-input dairy production system. On the other hand, the majority of global milk supply is derived from high input indoor total mixed ration systems where seasonal calving is not practiced due to the dependence on ensiled silages, grains and concentrated feeds, which are available year-round. Synchronous changes in the macro and micronutrients in milk are much more noticeable as lactation progresses through early, mid and late stages in seasonal systems compared to non-seasonal systems-which can have implications on the processability and functionality of milk.
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Affiliation(s)
- Mark Timlin
- Teagasc, Moorepark Research Centre, Fermoy, P61 C996 Co. Cork, Ireland; (M.T.); (J.T.T.); (A.B.); (E.G.M.)
- School of Agriculture and Food Science, University College Dublin, Belfield, D04 V1W8 Dublin 4, Ireland;
- Food for Health Ireland, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Co. Cork, Ireland
| | - John T. Tobin
- Teagasc, Moorepark Research Centre, Fermoy, P61 C996 Co. Cork, Ireland; (M.T.); (J.T.T.); (A.B.); (E.G.M.)
| | - André Brodkorb
- Teagasc, Moorepark Research Centre, Fermoy, P61 C996 Co. Cork, Ireland; (M.T.); (J.T.T.); (A.B.); (E.G.M.)
- Food for Health Ireland, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Co. Cork, Ireland
| | - Eoin G. Murphy
- Teagasc, Moorepark Research Centre, Fermoy, P61 C996 Co. Cork, Ireland; (M.T.); (J.T.T.); (A.B.); (E.G.M.)
- Food for Health Ireland, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Co. Cork, Ireland
| | - Pat Dillon
- Teagasc, Animal and Grassland Research and Innovation Centre, Fermoy, P61 P302 Co. Cork, Ireland; (P.D.); (D.H.); (M.O.)
| | - Deirdre Hennessy
- Teagasc, Animal and Grassland Research and Innovation Centre, Fermoy, P61 P302 Co. Cork, Ireland; (P.D.); (D.H.); (M.O.)
| | - Michael O’Donovan
- Teagasc, Animal and Grassland Research and Innovation Centre, Fermoy, P61 P302 Co. Cork, Ireland; (P.D.); (D.H.); (M.O.)
| | - Karina M. Pierce
- School of Agriculture and Food Science, University College Dublin, Belfield, D04 V1W8 Dublin 4, Ireland;
- Food for Health Ireland, University College Dublin, D04 V1W8 Dublin 4, Ireland
| | - Tom F. O’Callaghan
- Teagasc, Moorepark Research Centre, Fermoy, P61 C996 Co. Cork, Ireland; (M.T.); (J.T.T.); (A.B.); (E.G.M.)
- Food for Health Ireland, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Co. Cork, Ireland
- School of Food and Nutritional Sciences, University College Cork, T12 K8AF Cork, Ireland
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31
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Abstract
Hypothyroidism is a highly prevalent endocrine complication in chronic kidney disease (CKD) patients. A large body of evidence has shown that there is a bidirectional relationship between thyroid dysfunction and kidney disease, yet there are many remaining gaps in knowledge in regards to the clinical management of CKD patients with hypothyroidism, including those receiving hemodialysis and peritoneal dialysis. Given that hypothyroidism has been associated with many deleterious outcomes including a higher risk of (1) mortality, (2) cardiovascular disease, (3) impaired health-related quality of life, and (4) altered body composition in both non-CKD and CKD patients, future research is needed to establish the appropriate screening, diagnosis, and treatment approaches in these populations.
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Affiliation(s)
- Yoko Narasaki
- Harold Simmons Center for Chronic Disease Research and Epidemiology, Division of Nephrology, Hypertension and Kidney Transplantation, University of California Irvine, Orange, CA
| | - Peter Sohn
- Harold Simmons Center for Chronic Disease Research and Epidemiology, Division of Nephrology, Hypertension and Kidney Transplantation, University of California Irvine, Orange, CA
| | - Connie M Rhee
- Harold Simmons Center for Chronic Disease Research and Epidemiology, Division of Nephrology, Hypertension and Kidney Transplantation, University of California Irvine, Orange, CA.
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32
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Is There an Ideal Diet to Protect against Iodine Deficiency? Nutrients 2021; 13:nu13020513. [PMID: 33557336 PMCID: PMC7914421 DOI: 10.3390/nu13020513] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 02/01/2021] [Accepted: 02/01/2021] [Indexed: 12/17/2022] Open
Abstract
Iodine deficiency is a global issue and affects around 2 billion people worldwide, with pregnant women as a high-risk group. Iodine-deficiency prevention began in the 20th century and started with global salt iodination programmes, which aimed to improve the iodine intake status globally. Although it resulted in the effective eradication of the endemic goitre, it seems that salt iodination did not resolve all the issues. Currently, it is recommended to limit the consumption of salt, which is the main source of iodine, as a preventive measure of non-communicable diseases, such as hypertension or cancer the prevalence of which is increasing. In spite of the fact that there are other sources of iodine, such as fish, seafood, dairy products, water, and vegetables, the high consumption of processed food with a high content of unionised salt, alternative diets or limited salt intake can still lead to iodine deficiency. Thus, iodine deficiency remains a relevant issue, with new, preventive solutions necessary. However, it appears that there is no diet which would fully cover the iodine requirements, and iodine food supplementation is still required.
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33
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Costa A, Niero G, Franzoi M, Cassandro M, De Marchi M, Penasa M. Short communication: Iodine content in bovine milk is lowly heritable and shows limited genetic variation. J Dairy Sci 2021; 104:3292-3297. [PMID: 33455746 DOI: 10.3168/jds.2020-19486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/23/2020] [Indexed: 11/19/2022]
Abstract
Milk and dairy products are considered important sources of iodine in several countries. Despite this, there is a paucity of studies that have investigated sources of variation of milk iodine, especially on a large scale. So far, it is not clear if milk iodine content could be increased through breeding in dairy cattle. Recently, a mid-infrared spectroscopy prediction model has been developed for an indirect quantification of iodine content in cow milk, as it is a faster and less expensive method that allows the prediction at population level. The model has coefficient of determination and ratio of performance to deviation in external validation of 0.57 and 1.44, respectively, and it was used in the present study to predict the iodine content from historical milk spectral data to investigate phenotypic and genetic aspects in the Italian Holstein cattle. Based on the accuracy of the model, the prediction was interpreted as proxy for the real milk iodine concentration (IODP). The data set comprised 33,776 test-day records with IODP from 4,072 cows. Data of IODP were transformed through natural logarithm to achieve a normal distribution. The effect of parity, lactation stage, and month of sampling were investigated, and genetic parameters were estimated using a test-day repeatability animal model. Milk IODP decreased with parities and was the lowest in early lactation. Heritability of IODP was low (0.025) and it was positively genetically correlated with milk yield and negatively with fat content. Results suggested that it would be challenging to directly improve this trait through breeding strategies in dairy cattle, because IODP is mainly affected by temporary environmental factors and thus, cannot be easily improved through genetics. Although preliminary, findings of this study suggest that it would be more convenient to develop feeding and management strategies to drive milk iodine level than to put efforts and resources into breeding strategies. Further studies should validate IODP as an indicator trait of milk iodine content by improving reference data and estimating genetic correlation between predicted and measured values.
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Affiliation(s)
- A Costa
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro (PD), Italy
| | - G Niero
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro (PD), Italy.
| | - M Franzoi
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro (PD), Italy
| | - M Cassandro
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro (PD), Italy
| | - M De Marchi
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro (PD), Italy
| | - M Penasa
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro (PD), Italy
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34
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The association of milk and dairy consumption with iodine status in pregnant women in Oporto region. Br J Nutr 2021; 126:1314-1322. [DOI: 10.1017/s000711452100009x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
AbstractThe role of milk and dairy products in supplying iodine to pregnant women is unknown in Portugal. The aim of this study was to evaluate the association between milk and dairy product consumption and the iodine status of pregnant women in the IoMum cohort of the Oporto region. Pregnant women were recruited between 10 and 13 weeks of gestation, when they provided a spot urine sample and information on lifestyle and intake of iodine-rich foods. Urinary iodine concentration (UIC) was determined by inductively coupled plasma MS. A total of 468 pregnant women (269 iodine supplement users and 199 non-supplement users) were considered eligible for analysis. Milk (but not yogurt or cheese) intake was positively associated with UIC, in the whole population (P = 0·02) and in the non-supplement users (P = 0·002), but not in the supplement users (P = 0·29). In non-supplement users, adjusted multinomial logistic regression analysis showed that milk consumption <3 times/month was associated with a five times increased risk of having UIC < 50 µg/l when compared with milk consumption ≥2 times/d (OR 5·4; 95 % CI 1·55, 18·78; P = 0·008). The highest UIC was observed in supplement users who reported consuming milk once per d (160 µg/l). Milk, but not yogurt or cheese, was positively associated with iodine status of pregnant women. Despite the observed positive association, daily milk consumption may not be sufficient to ensure adequate iodine intake in this population.
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35
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Givens DI. MILK Symposium review: The importance of milk and dairy foods in the diets of infants, adolescents, pregnant women, adults, and the elderly. J Dairy Sci 2021; 103:9681-9699. [PMID: 33076181 DOI: 10.3168/jds.2020-18296] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 06/16/2020] [Indexed: 12/20/2022]
Abstract
The ongoing increase in life expectancy is not always accompanied by an increase in healthy life span. There is increasing evidence that dietary exposure in early life can substantially affect chronic disease risk in later life. Milk and dairy foods are important suppliers of a range of key nutrients, with some being particularly important at certain life stages. It is now recognized that milk protein can stimulate insulin-like growth factor-1 (IGF-1), essential for longitudinal bone growth and bone mass acquisition in young children, thus reducing the risk of stunting. Low milk consumption during adolescence, particularly by girls, may contribute to suboptimal intake of calcium, magnesium, iodine, and other important nutrients. Given the generally low vitamin D status of European populations, this may have already affected bone development, and any resulting reduced bone strength may become a big issue when the populations are much older. Suboptimal iodine status of many young women has already been reported together with several observational studies showing an association between suboptimal iodine status during pregnancy and reduced cognitive development in the offspring. There is now good evidence that consumption of milk and dairy foods does not lead to an increased risk of cardiovascular diseases and type 2 diabetes. Indeed, some negative associations are seen, notably between yogurt consumption and type 2 diabetes, which should be researched with urgency. Greater emphasis should be placed on reducing malnutrition in the elderly and on dietary approaches to reduce their loss of muscle mass, muscle functionality, and bone strength. Whey protein has been shown to be particularly effective for reducing muscle loss; this needs to be developed to provide simple dietary regimens for the elderly to follow. There is an ongoing, often too simplistic debate about the relative value of animal versus plant food sources for protein in particular. It is important that judgments on the replacement of dairy products with those from plants also include the evidence on relative functionality, which is not expressed in simple nutrient content (e.g., hypotensive and muscle synthesis stimulation effects). Only by considering such functionality will a true comparison be achieved.
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Affiliation(s)
- D I Givens
- Institute for Food, Nutrition and Health, University of Reading, Reading RG6 6AR, UK.
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36
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Rezaei Ahvanooei MR, Norouzian MA, Hedayati M, Vahmani P. Effect of potassium iodide supplementation and teat-dipping on iodine status in dairy cows and milk iodine levels. Domest Anim Endocrinol 2021; 74:106504. [PMID: 32846374 DOI: 10.1016/j.domaniend.2020.106504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 05/12/2020] [Accepted: 05/25/2020] [Indexed: 10/24/2022]
Abstract
Two experiments were designed to determine the effects of dietary iodine and teat-dipping on the iodine status of dairy cows and their milk. Eight mid-lactation Holstein dairy cows with an initial body weight of 642 ± 62 kg and 145 ± 21 d in milk were studied for 2 periods over 44 d. In period 1, all cows were fed a basal diet supplemented with potassium iodide (KI) (10 mg I/Kg DM) for 8 d with no teat-dipping. In period 2, a pre-milking teat-dipping was applied for 10 d followed by no teat-dipping before milking (udder wash without iodine) and then post-dipping treatment was applied for 5 d. Feeding KI increased concentrations of iodine in serum, urine, and milk (P < 0.05). Switching from the KI supplementation to no iodine addition resulted in an immediate decrease of iodine in serum, urine, and milk (P < 0.05). Post teat-dipping resulted in increased iodine levels in serum, urine, and milk (P < 0.05). However, pre-milking teat-dipping did not affect iodine concentration compared to post-dipping. A 250 mL cup of milk from the control and KI-supplemented diets would provide 29.4% and 68.4%, respectively, of the adult-recommended dietary allowance for iodine. In conclusion, milk iodine concentration could be effectively enhanced by KI supplementation and teat-dipping practices.
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Affiliation(s)
- M R Rezaei Ahvanooei
- Department of Animals and Poultry Science, College of Aburaihan, University of Tehran, Tehran, Iran
| | - M A Norouzian
- Department of Animals and Poultry Science, College of Aburaihan, University of Tehran, Tehran, Iran.
| | - M Hedayati
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - P Vahmani
- Department of Animal Science, University of California, 2251 Meyer Hall, Davis, CA 95616, USA
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37
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Iodine status of consumers of milk-alternative drinks v. cows' milk: data from the UK National Diet and Nutrition Survey. Br J Nutr 2020; 126:28-36. [PMID: 32993817 DOI: 10.1017/s0007114520003876] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Milk is the main source of iodine in the UK; however, the consumption and popularity of plant-based milk-alternative drinks are increasing. Consumers may be at risk of iodine deficiency as, unless fortified, milk alternatives have a low iodine concentration. We therefore aimed to compare the iodine intake and status of milk-alternative consumers with that of cows' milk consumers. We used data from the UK National Diet and Nutrition Survey from years 7 to 9 (2014-2017; before a few manufacturers fortified their milk-alternative drinks with iodine). Data from 4-d food diaries were used to identify consumers of milk-alternative drinks and cows' milk, along with the estimation of their iodine intake (µg/d) (available for n 3976 adults and children ≥1·5 years). Iodine status was based on urinary iodine concentration (UIC, µg/l) from spot-urine samples (available for n 2845 adults and children ≥4 years). Milk-alternative drinks were consumed by 4·6 % (n 185; n 88 consumed these drinks exclusively). Iodine intake was significantly lower in exclusive consumers of milk alternatives than cows' milk consumers (94 v. 129 µg/d; P < 0·001). Exclusive consumers of milk alternatives also had a lower median UIC than cows' milk consumers (79 v. 132 µg/l; P < 0·001) and were classified as iodine deficient by the WHO criterion (median UIC < 100 µg/l), whereas cows' milk consumers were iodine sufficient. These data show that consumers of unfortified milk-alternative drinks are at risk of iodine deficiency. As a greater number of people consume milk-alternative drinks, it is important that these products are fortified appropriately to provide a similar iodine content to that of cows' milk.
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38
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McKernan C, Meharg C, Carey M, Donaldson E, Williams P, Savage L, Meharg AA. Feed-derived iodine overrides environmental contribution to cow milk. J Dairy Sci 2020; 103:6930-6939. [PMID: 32475661 DOI: 10.3168/jds.2019-17446] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 03/24/2020] [Indexed: 11/19/2022]
Abstract
Diets worldwide are deficient in iodine, leading to a range of undesirable health effects at the population level. Dairy products are a primary source of iodine in diets for those populations in which iodized salt is not systematically used or available. However, the flows of iodine through dairy agroecosystems are not well understood. The aim of this research was to investigate iodine flows though the dairy agroecosystem, including the influence of atmospheric depositional inputs, environmental variables, season, husbandry, and diet. Three farm-based sampling campaigns were carried out in this investigation, with milk, soil, silage, grass, and feed iodine determined by inductively coupled plasma mass spectroscopy, and nonparametric statistical analysis tests were conducted on data sets obtained. Natural iodine inputs into the environment are dominated by atmospheric deposition, which mainly from sea spray, and thus the location of farms relative to the coast and prevailing wind direction. Herbage and silage produced from grass-based systems strongly correlated with soil iodine, yet there was a strong disconnect between soil, forage, and feed and the milk that results. This was due to the levels of iodine in supplemental feeds being approximately 10-fold higher than those in forage-derived feeds. The practice of feed supplementation, accentuated by summer housing of cows, led to elevated milk iodine.
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Affiliation(s)
- C McKernan
- Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, United Kingdom
| | - C Meharg
- Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, United Kingdom.
| | - M Carey
- Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, United Kingdom
| | - E Donaldson
- Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, United Kingdom
| | - P Williams
- Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, United Kingdom
| | - L Savage
- Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, United Kingdom
| | - A A Meharg
- Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, United Kingdom.
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39
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Ianni A, Bennato F, Martino C, Grotta L, Franceschini N, Martino G. Proteolytic Volatile Profile and Electrophoretic Analysis of Casein Composition in Milk and Cheese Derived from Mironutrient-Fed Cows. Molecules 2020; 25:molecules25092249. [PMID: 32397653 PMCID: PMC7249190 DOI: 10.3390/molecules25092249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/08/2020] [Accepted: 05/09/2020] [Indexed: 12/13/2022] Open
Abstract
The aim of the study was to evaluate the proteolytic process in Caciocavallo cheese obtained from Friesian cows fed zinc, selenium, and iodine supplementation. Thirty-six Friesian cows, balanced for parity, milk production, and days in milk, were randomly assigned to four groups. The control group (CG) was fed with a conventional feeding strategy, while the three remaining groups received a diet enriched with three different trace elements, respectively zinc (ZG), selenium (SG), and iodine (IG). At the end of the experimental period, samples of milk were collected and used to produce Caciocavallo cheese from each experimental group. Cheese samples were then analyzed after 7 and 120 days from the cheese making in order to obtain information on chemical composition and extent of the proteolytic process, evaluated through the electrophoretic analysis of caseins and the determination of volatiles profile. Both milk and cheese samples were richer in the amount of the microelement respectively used for the integration of the cattle’s diet. The zymographic approach was helpful in evaluating, in milk, the proteolytic function performed by endogenous metalloenzymes specifically able to degrade gelatin and casein; this evaluation did not highlight significant differences among the analyzed samples. In cheese, the electrophoretic analysis in reducing and denaturing condition showed the marked ability of β-casein to resist the proteolytic action during ripening, whereas the dietary selenium supplementation was shown to perform a protective action against the degradation of S1 and S2 isoforms of α-casein. The analysis of the volatile profile evidenced the presence of compounds associated with proteolysis of phenylalanine and leucine. This approach showed that selenium was able to negatively influence the biochemical processes that lead to the formation of 3-methyl butanol, although the identification of the specific mechanism needs further investigation.
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Affiliation(s)
- Andrea Ianni
- Faculty of BioScience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100 Teramo, Italy; (A.I.); (F.B.); (L.G.)
| | - Francesca Bennato
- Faculty of BioScience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100 Teramo, Italy; (A.I.); (F.B.); (L.G.)
| | - Camillo Martino
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “G. Caporale”, Via Campo Boario 37, 64100 Teramo, Italy;
| | - Lisa Grotta
- Faculty of BioScience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100 Teramo, Italy; (A.I.); (F.B.); (L.G.)
| | - Nicola Franceschini
- Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, Via Vetoio 1, 67100 L’Aquila, Italy;
| | - Giuseppe Martino
- Faculty of BioScience and Technology for Food, Agriculture and Environment, University of Teramo, Via Renato Balzarini 1, 64100 Teramo, Italy; (A.I.); (F.B.); (L.G.)
- Correspondence: ; Tel.: +39-0861-266950
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40
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Coneyworth LJ, Coulthard LCHA, Bailey EH, Young SD, Stubberfield J, Parsons L, Saunders N, Watson E, Homer EM, Welham SJM. Geographical and seasonal variation in iodine content of cow's milk in the UK and consequences for the consumer´s supply. J Trace Elem Med Biol 2020; 59:126453. [PMID: 31952009 DOI: 10.1016/j.jtemb.2020.126453] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 12/13/2019] [Accepted: 01/09/2020] [Indexed: 11/20/2022]
Abstract
BACKGROUND Dairy products provide a crucial source of dietary iodine for the majority of the UK population, contributing approximately 30-40 % of daily intake. Fluctuations in the iodine content of purchased milk both seasonally and annually implies potential fragility of iodine supply likely through fluctuating supplementation practices in cow herds. We set out to establish the level of national variation in herds and identify factors which might impact milk iodine content. METHODS Milk samples were obtained from 98 herds across the UK via the National Milk Laboratories in August and December 2016. Iodine concentration of samples was measured using ICP-MS. Milk samples and feed intake data were additionally taken from 22 cows from the University of Nottingham (UON) dairy herd. RESULTS There was considerable variation in milk iodine content from < 0.012 (Limit of Detection) to 1558 μg L-1, with a summer median of 197 μg L-1 and winter median 297 μg L-1. Overall, winter values were higher than summer counterparts (P < 0.001) and this held true for samples taken from the North West (P = 0.002) and South West (P = 0.006) but not for other regions studied. Data from the UON herd showed a negative relationship between iodine content and milk yield (P = 0.03) and we found that milk iodine content varied considerably despite apparently similar iodine intakes. CONCLUSIONS Regional differences in milk iodine concentration between summer and winter suggests that feeding practices are far from uniform across the country. The negative association observed between iodine concentration and milk yield in UON samples, suggests that reduced summer values may be influenced by dilution in addition to seasonal differences in concentrate feed provision.
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Affiliation(s)
- Lisa J Coneyworth
- University of Nottingham, School of Biosciences, Division of Nutritional Sciences, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD, United Kingdom
| | - Lauren C H A Coulthard
- University of Nottingham, School of Biosciences, Division of Nutritional Sciences, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD, United Kingdom
| | - Elizabeth H Bailey
- University of Nottingham, School of Biosciences, Division of Agriculture and Environmental Sciences, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD, United Kingdom
| | - Scott D Young
- University of Nottingham, School of Biosciences, Division of Agriculture and Environmental Sciences, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD, United Kingdom
| | - Jonathan Stubberfield
- University of Nottingham, School of Biosciences, Division of Nutritional Sciences, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD, United Kingdom
| | - Louise Parsons
- University of Nottingham, School of Biosciences, Division of Nutritional Sciences, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD, United Kingdom
| | - Neil Saunders
- University of Nottingham, School of Biosciences, Division of Animal Science, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD, United Kingdom
| | - Eamon Watson
- National Milk Laboratories, Units 26 - 29 Laches Close, Calibre Business Park, Four Ashes, Wolverhampton, WV10 7DZ, United Kingdom
| | - Elizabeth M Homer
- Trouw Nutrition GB, Blenheim House, Blenheim Road, Ashbourne, Derbyshire, DE6 1HA, United Kingdom
| | - Simon J M Welham
- University of Nottingham, School of Biosciences, Division of Nutritional Sciences, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD, United Kingdom.
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Large Variability of Iodine Content in Retail Cow's Milk in the U.S. Nutrients 2020; 12:nu12051246. [PMID: 32353959 PMCID: PMC7281966 DOI: 10.3390/nu12051246] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/16/2020] [Accepted: 04/22/2020] [Indexed: 12/18/2022] Open
Abstract
Iodine intake is of contemporary public health interest. The recommended daily iodine intake is 150 µg for most adults, and milk is an important source of iodine in the U.S. diet. Iodine concentration in cow’s milk is affected by diet and iodine supplementation levels, milking sanitation practices, and other factors. Current analytical iodine data in U.S. retail milk are crucial for evaluating population-wide health outcomes related to diet. Samples of whole (3.25% fat), 2%, 1%, and skim (0–0.5% fat) milk were procured from 24 supermarkets across the U.S. using a census-based statistical plan. Iodine was analyzed by inductively coupled plasma mass spectrometry, including certified reference materials and control samples to validate results. No difference in iodine content was found between milkfat levels (F3,69 1.033, p = 0.4). Overall mean (SEM) was 85(5.5) µg/serving (240 mL). However, the 95% prediction interval of 39–185 µg/serving for individual samples indicated high variability among individual samples. Given the recommended 150 µg iodine per day for most adults along with the study mean, one milk serving can provide approximately 57% of daily intake. Researchers, health care professionals, and consumers should be aware of iodine variability in milk, while additional research is needed to investigate the impact of iodine variability factors.
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43
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Bogdanova AA, Alekseev AA, Flerova EA, Konovalov AV. The effect of additive containing an organic form of iodine on the physiological-biochemical parameters of the body of cows. REGULATORY MECHANISMS IN BIOSYSTEMS 2020. [DOI: 10.15421/022007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Iodine deficiency in soil and water in many countries leads to its low content in plants and animal feed produced from them. The limited intake of this element in animals can lead to endemic diseases. The lack of iodine in animal feeding is most often compensated for by the use of additives with an inorganic form of iodine, which can be poorly absorbed by the body. Feed products with an organic form of iodine have a great biological effect. A study on the effect of iodine-containing additives on the physiological and biochemical parameters of the animal organism was carried out on two groups of 15 cows. The experimental group was fed an organic form of iodine as part of the additive, the control group received an inorganic form of iodine. For all animals during the experiment the biochemical parameters of blood, milk productivity and reproductive ability were studied. During the experiment, an increase in metabolic and redox processes in the body was noted in the experimental group. An increase in mineral metabolism, including iodine content, was found. Due to the sufficient intake of organic iodine in the animals of the experimental group, there was an increase in the activity of the main hepatic enzymes AST and ALT. An increase in the process of gluconeogenesis due to an increase in the glucose content in the blood of experimental cows was revealed. An increase in milk production and reproductive function of animals of the experimental group was established. Within 30 days after the termination of feeding the supplement with the organic form of iodine in the experimental group, a prolonging effect was observed, consisting in higher values of blood biochemical parameters, improved reproductive function and milk productivity relative to equivalent animals in the control. As a result, it was concluded that the use of an additive with an organic form of iodine in the amount of 1.5 g in feeding cows for 60 days increases the iodine content in the blood serum of animals and increases the performance of all types of metabolism, which may indicate the best stimulating effect of the organic form of iodine on thyroid activity glands. This in turn helps to improve the productive and reproductive qualities of animals. To recommend the studied drug as a means to replenish iodine deficiency in animals and to more accurately analyze its effect on the hormone-forming function of the thyroid gland, it is necessary to study the level of thyroid hormones in the blood.
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Adalsteinsdottir S, Tryggvadottir EA, Hrolfsdottir L, Halldorsson TI, Birgisdottir BE, Hreidarsdottir IT, Hardardottir H, Arohonka P, Erlund I, Gunnarsdottir I. Insufficient iodine status in pregnant women as a consequence of dietary changes. Food Nutr Res 2020; 64:3653. [PMID: 31983913 PMCID: PMC6958617 DOI: 10.29219/fnr.v64.3653] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 11/28/2019] [Accepted: 12/04/2019] [Indexed: 02/05/2023] Open
Abstract
Background Historically, Iceland has been an iodine-sufficient nation due to notably high fish and milk consumption. Recent data suggest that the intake of these important dietary sources of iodine has decreased considerably. Objective To evaluate the iodine status of pregnant women in Iceland and to determine dietary factors associated with risk for deficiency. Methods Subjects were women (n = 983; 73% of the eligible sample) attending their first ultrasound appointment in gestational weeks 11–14 in the period October 2017–March 2018. Spot urine samples were collected for assessment of urinary iodine concentration (UIC) and creatinine. The ratio of iodine to creatinine (I/Cr) was calculated. Median UIC was compared with the optimal range of 150–249 μg/L defined by the World Health Organization (WHO). Diet was assessed using a semiquantitative food frequency questionnaire (FFQ), which provided information on main dietary sources of iodine in the population studied (dairy and fish). Results The median UIC (95% confidence interval (CI)) and I/Cr of the study population was 89 μg/L (42, 141) and 100 (94, 108) μg/g, respectively. UIC increased with higher frequency of dairy intake, ranging from median UIC of 55 (35, 79) μg/L for women consuming dairy products <1 time per week to 124 (98, 151) μg/L in the group consuming dairy >2 times per day (P for trend <0.001). A small group of women reporting complete avoidance of fish (n = 18) had UIC of 50 (21, 123) μg/L and significantly lower I/Cr compared with those who did not report avoidance of fish (58 (34, 134) μg/g vs. 100 (94, 108) μg/g, P = 0.041). Women taking supplements containing iodine (n = 34, 3.5%) had significantly higher UIC compared with those who did not take supplements (141 (77, 263) μg/L vs. 87 (82, 94), P = 0.037). Conclusion For the first time, insufficient iodine status is being observed in an Icelandic population. There is an urgent need for a public health action aiming at improving iodine status of women of childbearing age in Iceland.
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Affiliation(s)
- Solveig Adalsteinsdottir
- Unit for Nutrition Research, Landspitali University Hospital and Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland
| | - Ellen Alma Tryggvadottir
- Unit for Nutrition Research, Landspitali University Hospital and Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland
| | - Laufey Hrolfsdottir
- Unit for Nutrition Research, Landspitali University Hospital and Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland.,Institution of Health Science Research, University of Akureyri and Akureyri Hospital, Akureyri, Iceland
| | - Thorhallur I Halldorsson
- Unit for Nutrition Research, Landspitali University Hospital and Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland.,Centre for Fetal Programming, Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | - Bryndis Eva Birgisdottir
- Unit for Nutrition Research, Landspitali University Hospital and Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland
| | | | - Hildur Hardardottir
- Department of Obstetrics and Gynecology, Landspitali University Hospital, Reykjavík, Iceland.,Faculty of Medicine, University of Iceland Reykjavík, Iceland
| | - Petra Arohonka
- Forensic Toxicology Unit, National Institute for Health and Welfare, Helsinki, Finland
| | - Iris Erlund
- Forensic Toxicology Unit, National Institute for Health and Welfare, Helsinki, Finland
| | - Ingibjorg Gunnarsdottir
- Unit for Nutrition Research, Landspitali University Hospital and Faculty of Food Science and Nutrition, University of Iceland, Reykjavik, Iceland
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van de Kamp ME, Saridakis I, Verkaik-Kloosterman J. Iodine content of semi-skimmed milk available in the Netherlands depending on farming (organic versus conventional) and heat treatment (pasteurized versus UHT) and implications for the consumer. J Trace Elem Med Biol 2019; 56:178-183. [PMID: 31479801 DOI: 10.1016/j.jtemb.2019.08.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/19/2019] [Accepted: 08/19/2019] [Indexed: 11/23/2022]
Abstract
PURPOSE To study the iodine concentration in semi-skimmed cow's milk available on the Dutch market. METHODS The iodine content of 16 milk brands was determined at four times (June, September, December 2016 and March 2017) using inductively coupled plasma mass spectrometry. Brands included 12*pasteurized (n = 48 samples) and 4*UHT (n = 16 samples) milk, the brands subdivided into 8* organic and 8*conventional milk (each 32 samples). RESULTS The median iodine concentration was 15.9 μg/100 g. The iodine concentration increased from June 2016 to March 2017 from 12.4 μg/100 g to 19.9 μg/100 g. The time trend with difference between summer and winter milk iodine content was stronger in organic than conventional producing farms indicating more uncertainties to supply iodized minerals by pasture feeding. Despite reflection of the time trend in the investigated kinds of milk, the distributions of iodine concentrations were similar between organic and conventional produced milk and between pasteurized and UHT milk. CONCLUSIONS Milk was shown as a valuable iodine source for the Dutch consumer. The significant time trend in the iodine concentration in favor of the milk from a stable feeding period (Dec and March) compared with a pasture feeding period (June and September) is a challenge to keep all year round the cow's iodine supply level constant, mainly in organic producing farms.
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Affiliation(s)
- Mirjam E van de Kamp
- National Institute for Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3721 MA Bilthoven, P.O. Box 1, 3720 BA Bilthoven, the Netherlands
| | - Irini Saridakis
- National Institute for Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3721 MA Bilthoven, P.O. Box 1, 3720 BA Bilthoven, the Netherlands
| | - Janneke Verkaik-Kloosterman
- National Institute for Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3721 MA Bilthoven, P.O. Box 1, 3720 BA Bilthoven, the Netherlands.
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Arrizabalaga JJ, Jalón M, Espada M, Cañas M, Latorre PM. Iodine contents in conventional ultra-high temperature (UHT) processed cow milk: Changes over the year and regional differences. Implications for epidemiological studies on iodine nutritional status. ACTA ACUST UNITED AC 2019; 67:383-393. [PMID: 31776107 DOI: 10.1016/j.endinu.2019.08.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 07/28/2019] [Accepted: 08/20/2019] [Indexed: 11/17/2022]
Abstract
BACKGROUND AND OBJECTIVES Ultra-high temperature (UHT) processed cow milk is the milk most commonly consumed in Southwest Europe. The study objectives were: 1) to describe the pattern followed by iodine concentration (IC) in conventional UHT milk over the year, and 2) to find out any differences in IC in this type of milk depending on its geographical origin. MATERIAL AND METHODS Bricks of conventional UHT cow milk of commercial brands available in food stores in Vitoria-Gasteiz (Araba/Álava), Basque Country (Spain) were bought for 12 consecutive months, and their ICs were measured using high performance liquid chromatography. RESULTS Median (P25-P75) IC in UHT milk (n=489) was 190 (159-235)μg/L. IC in milk showed great changes over the year, reaching peak values between January and May (241 [201-272]μg/L), and minimal levels between July and November (162 [134-185]μg/L) (P<.0001). The IC of milk packed in Germany was significantly lower than that of milks packed in Spain and France, 119 (106-156)μg/L versus 189 (159-229)μg/L and 205 (176-243)μg/L respectively (P<.0001). CONCLUSIONS Conventional UHT cow milk is a very important nutritional source of iodine, but its IC is highly variable. Knowledge of the pattern followed by IC in milk over the year is of great interest for planning epidemiological studies on iodine nutritional status in schoolchildren and for interpretation of their results.
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Affiliation(s)
- Juan José Arrizabalaga
- Servicio de Endocrinología y Nutrición, Hospital Universitario Araba-Arabako Unibertsitate Ospitalea, Osakidetza-Servicio Vasco de Salud, (Araba/Álava), Vitoria-Gasteiz, España.
| | - Mercedes Jalón
- Dirección de Salud Pública y Adicciones, Departamento de Salud, Gobierno Vasco-Eusko Jaurlaritza, (Araba/Álava), Vitoria- Gasteiz, España
| | - Mercedes Espada
- Unidad de Química Clínica, Laboratorio Normativo de Salud Pública, Departamento de Salud, Gobierno Vasco-Eusko Jaurlaritza, (Bizkaia), Derio, España
| | - Mercedes Cañas
- Dirección de Salud Pública y Adicciones, Departamento de Salud, Gobierno Vasco-Eusko Jaurlaritza, (Araba/Álava), Vitoria- Gasteiz, España
| | - Pedro María Latorre
- Unidad de Investigación, Atención Primaria de Bizkaia, Osakidetza-Servicio Vasco de Salud, (Bizkaia), Bilbao, España
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Iannaccone M, Ianni A, Elgendy R, Martino C, Giantin M, Cerretani L, Dacasto M, Martino G. Iodine Supplemented Diet Positively Affect Immune Response and Dairy Product Quality in Fresian Cow. Animals (Basel) 2019; 9:ani9110866. [PMID: 31731565 PMCID: PMC6912399 DOI: 10.3390/ani9110866] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/22/2019] [Accepted: 10/23/2019] [Indexed: 02/07/2023] Open
Abstract
The effects of iodine supplementation on the whole-transcriptome of dairy cow using RNA sequencing has been investigated in this study. Iodine did not influence the milk composition, while an improvement was observed in the immune response as well as in the quality of dairy product. Indeed, the iodine intake specifically influenced the expression of 525 genes and the pathway analysis demonstrated that the most affected among them were related to immune response and oxidative stress. As a consequence, we indirectly showed a better response to bacterial infection because of the reduction of somatic cell counts; furthermore, an improvement of dairy product quality was observed since lipid oxidation reduced in fresh cheese. Such findings, together with the higher milk iodine content, clearly demonstrated that iodine supplementation in dairy cow could represent a beneficial practice to preserve animal health and to improve the nutraceutical properties of milk and its derived products.
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Affiliation(s)
- Marco Iannaccone
- Faculty of Bioscience and Technology for Food, Agriculture, and Environment, University of Teramo, Via R. Balzarini 1, 64100 Teramo, Italy;
| | - Andrea Ianni
- Department of Medical, Oral and Biotechnological Sciences, “G. d’Annunzio” University Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy;
| | - Ramy Elgendy
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala 75185, Sweden;
| | - Camillo Martino
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise “G. Caporale” Via Campo Boario, 64100 Teramo, Italy;
| | - Mery Giantin
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell’Università 16, 35020 Legnaro (PD), Italy; (M.G.); (M.D.)
| | | | - Mauro Dacasto
- Department of Comparative Biomedicine and Food Science, University of Padua, Viale dell’Università 16, 35020 Legnaro (PD), Italy; (M.G.); (M.D.)
| | - Giuseppe Martino
- Faculty of Bioscience and Technology for Food, Agriculture, and Environment, University of Teramo, Via R. Balzarini 1, 64100 Teramo, Italy;
- Correspondence: ; Tel.: +39-0861-266950
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Iodine content development in raw cow’s milk in three regions of the Czech Republic between the years 2008 and 2018. ACTA VET BRNO 2019. [DOI: 10.2754/avb201988030265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The study examines an analysis and evaluation of iodine content in raw cow’s milk in three regions of the Czech Republic between the years 2008 and 2018. Bulk milk samples were collected at dairy farms situated in South Bohemia, Central Bohemia, and the Vysočina Region. Iodine in milk was determined on the basis of alkaline ashing, using the spectrophotometric method according to Sandell-Kolthoff. The highest mean iodine content was measured in 2009 (485.5 ± 408.2 μg/l) and the lowest in 2016 (169.2 ± 71.7 μg/l). Since 2010 there has been a gradual decline of iodine concentration, from 479.5 ± 304.9 μg/l in 2010 to 231.2 ± 63.5 μg/l in 2018. A similar decreasing tendency was recorded in all the monitored regions. The percentage of samples containing iodine above 500 μg/l was on the decrease (37% in 2009; 0% in 2016–2018) and less than 80 μg/l (8% in 2009; 0% in 2017–2018). The current state corresponds to the requirements for iodine content in milk for human consumption. The study emphasizes the importance of continuous iodine content checks in milk and the related adjustments of iodine supplementation to the feeding rations of dairy cows.
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Denholm SJ, Sneddon AA, McNeilly TN, Bashir S, Mitchell MC, Wall E. Phenotypic and genetic analysis of milk and serum element concentrations in dairy cows. J Dairy Sci 2019; 102:11180-11192. [PMID: 31587908 DOI: 10.3168/jds.2019-16960] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 08/20/2019] [Indexed: 11/19/2022]
Abstract
Enhancing micronutrient (i.e., mineral and vitamin) concentrations within milk and serum from dairy cows is important for both the health of the cow and the nutritive value of the milk for human consumption. However, a good understanding of the genetics underlying the micronutrient content in dairy cattle is needed to facilitate such enhancements through feeding or breeding practices. In this study, milk (n = 950) and serum (n = 766) samples were collected from Holstein-Friesian dairy cows (n = 479) on 19 occasions over a 59-mo period and analyzed for concentrations of important elements. Additionally, a subset of 256 milk samples was analyzed for concentrations of vitamin B12. Cows belonged to 2 genetic lines (average and highest genetic merit for milk fat plus protein yield) and were assigned to 1 of 2 diets based on either a by-product or homegrown ration. Univariate models accounting for repeated records were used to analyze element and vitamin B12 data and investigate the effect of genotype and feeding system as well as derive estimates of variance components and genetic parameters. Bivariate models were used to study correlations both within and between milk and serum. Only concentrations of Hg in milk were seen to be affected by genotype, with higher concentrations in cows with high genetic merit. In contrast, element concentrations were influenced by feeding system such that cows fed the homegrown diet had increased milk concentrations of Ca, Cu, I, Mn, Mo, P, and K and increased serum concentrations of Cd, Cu, Fe, Mo, and V. Cows on the by-product diet had increased milk concentrations of Mg, Se, and Na and increased serum concentrations of P and Se. Heritability (h2) estimates were obtained for 6 milk and 4 serum elements, including Mg (h2milk = 0.30), K (h2serum = 0.18), Ca (h2milk = 0.20; h2serum = 0.12), Mn (h2milk = 0.14), Cu (h2serum = 0.22), Zn (h2milk = 0.24), Se (h2milk = 0.15; h2serum = 0.10), and Mo (h2milk = 0.19). Significant estimates of repeatability were observed in all milk and serum quantity elements (Na, Mg, P, K, and Ca) as well as 5 milk and 7 serum trace elements. Only K in milk and serum was found to have a significant positive genetic and phenotypic correlation (0.52 and 0.22, respectively). Significant phenotypic associations were noted between milk and serum Ca (0.17), Mo (0.19), and Na (-0.79). Additional multivariate analyses between measures within sample type (i.e., milk or serum) revealed significant positive associations, both phenotypic and genetic, between some of the elements. In milk, Se was genetically correlated with Ca (0.63), Mg (0.59), Mn (0.40), P (0.53), and Zn (0.52), whereas in serum, V showed strong genetic associations with Cd (0.71), Ca (0.53), Mn (0.63), Mo (0.57), P (0.42), K (0.45), and Hg (-0.44). These results provide evidence that element concentrations in milk and blood of dairy cows are significantly influenced by both diet and genetics and demonstrate the potential for genetic selection and dietary manipulation to alter nutrient concentration to improve both cow health and the healthfulness of milk for human consumption.
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Affiliation(s)
- Scott J Denholm
- Animal and Veterinary Sciences, Scotland's Rural College, Easter Bush, Midlothian, United Kingdom, EH25 9RG.
| | - Alan A Sneddon
- The Rowett Institute, University of Aberdeen, Aberdeen, United Kingdom, AB25 2ZD
| | - Tom N McNeilly
- Moredun Research Institute, Pentlands Science Park, Midlothian, United Kingdom, EH26 0PZ
| | - Shabina Bashir
- The Rowett Institute, University of Aberdeen, Aberdeen, United Kingdom, AB25 2ZD
| | - Mairi C Mitchell
- Moredun Research Institute, Pentlands Science Park, Midlothian, United Kingdom, EH26 0PZ
| | - Eileen Wall
- Animal and Veterinary Sciences, Scotland's Rural College, Easter Bush, Midlothian, United Kingdom, EH25 9RG
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Monitoring residue concentrations in milk from farm and throughout a milk powder manufacturing process. J DAIRY RES 2019; 86:341-346. [PMID: 31378206 DOI: 10.1017/s0022029919000578] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The experiments reported in this research paper aimed to investigate differences in the levels of chlorate (CHLO), perchlorate (PCHLO), trichloromethane (TCM) and iodine residues in bulk tank (BT) milk produced at different milk production periods, and to monitor those levels throughout a skim milk powder (SMP) production chain (BTs, collection tankers [CTs], whole milk silo [WMS] and skim milk silo [SMS]). Chlorate, PCHLO and iodine were measured in SMP, while TCM was measured in the milk cream. The CHLO, TCM and iodine levels in the mid-lactation milk stored in the WMS were lower than legislative and industrial specifications (0.0100 mg/kg, 0.0015 mg/kg and 150 µg/l, respectively). However, in late-lactation, these levels were numerically higher than the mid-lactation levels and specifications. Trichloromethane accumulated in the cream portion after separation. Perchlorate was not detected in any of the samples. Regarding iodine, the levels in mid-lactation reconstituted SMP were higher than that required by manufacturers (100 µg/l), indicating that the levels in milk should be lower than 142 µg/l. The higher residue levels observed in late-lactation could be related to the low milk volume produced during that period and changes in sanitation practices, while changes in feed management could have affected iodine levels. This study could assist in controlling and setting limits for CHLO, TCM and iodine levels in milk, ensuring premium quality dairy products.
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