1
|
Pellowski D, Kusch P, Henning T, Kochlik B, Maares M, Schmiedeskamp A, Pohl G, Schreiner M, Baldermann S, Haase H, Schwerdtle T, Grune T, Weber D. Postprandial Micronutrient Variability and Bioavailability: An Interventional Meal Study in Young vs. Old Participants. Nutrients 2024; 16:625. [PMID: 38474753 DOI: 10.3390/nu16050625] [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: 01/17/2024] [Revised: 02/15/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
This study explores age- and time-dependent variations in postprandial micronutrient absorption after a micronutrient-rich intervention meal within the Biomiel (bioavailability of micronutrients in elderly) study. Comprising 43 healthy participants, the study compares young (n = 21; mean age 26.90 years) and old (n = 22; mean age 66.77 years) men and women, analyzing baseline concentrations and six-hour postprandial dynamics of iron (Fe), copper (Cu), zinc (Zn), selenium (Se), iodine (I), free zinc (fZn), vitamin C, retinol, lycopene, β-carotene, α-tocopherol, and γ-tocopherol, along with 25(OH) vitamin D (quantified only at baseline). Methodologically, quantifications in serum or plasma were performed at baseline and also at 90, 180, 270, and 360 min postprandially. Results reveal higher baseline serum Zn and plasma lycopene concentrations in the young group, whereas Cu, Se, Cu/Zn ratio, 25(OH) vitamin D, α-tocopherol, and γ-tocopherol were higher in old participants. Postprandial variability of Zn, vitamin C, and lycopene showed a strong time-dependency. Age-related differences in postprandial metabolism were observed for Se, Cu, and I. Nevertheless, most of the variance was explained by individuality. Despite some limitations, this study provides insights into postprandial micronutrient metabolism (in serum/plasma), emphasizing the need for further research for a comprehensive understanding of this complex field. Our discoveries offer valuable insights for designing targeted interventions to address and mitigate micronutrient deficiencies in older adults, fostering optimal health and well-being across the lifespan.
Collapse
Affiliation(s)
- Denny Pellowski
- Department Food Chemistry, Institute of Nutritional Science, University of Potsdam, 14469 Potsdam, Germany
- NutriAct Competence Cluster Nutrition Research Berlin-Potsdam, 14558 Nuthetal, Germany
- Trace-Age-DFG Research Unit on Interactions of Essential Trace Elements in Healthy and Diseased Elderly (FOR 2558), Berlin-Potsdam-Jena-Wuppertal, 14558 Nuthetal, Germany
| | - Paula Kusch
- Department Food Chemistry, Institute of Nutritional Science, University of Potsdam, 14469 Potsdam, Germany
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany
| | - Thorsten Henning
- Department Food Chemistry, Institute of Nutritional Science, University of Potsdam, 14469 Potsdam, Germany
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany
- Food4Future (F4F), c/o Leibniz Institute of Vegetable and Ornamental Crops (IGZ), 14979 Grossbeeren, Germany
- German Federal Institute for Risk Assessment (BfR), 10589 Berlin, Germany
| | - Bastian Kochlik
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany
- Food4Future (F4F), c/o Leibniz Institute of Vegetable and Ornamental Crops (IGZ), 14979 Grossbeeren, Germany
| | - Maria Maares
- Trace-Age-DFG Research Unit on Interactions of Essential Trace Elements in Healthy and Diseased Elderly (FOR 2558), Berlin-Potsdam-Jena-Wuppertal, 14558 Nuthetal, Germany
- Department of Food Chemistry and Toxicology, Technische Universität Berlin, 13355 Berlin, Germany
| | - Amy Schmiedeskamp
- NutriAct Competence Cluster Nutrition Research Berlin-Potsdam, 14558 Nuthetal, Germany
- Plant Quality and Food Security, Leibniz Institute of Vegetable and Ornamental Crops, 14979 Grossbeeren, Germany
| | - Gabriele Pohl
- Department Food Chemistry, Institute of Nutritional Science, University of Potsdam, 14469 Potsdam, Germany
| | - Monika Schreiner
- NutriAct Competence Cluster Nutrition Research Berlin-Potsdam, 14558 Nuthetal, Germany
- Food4Future (F4F), c/o Leibniz Institute of Vegetable and Ornamental Crops (IGZ), 14979 Grossbeeren, Germany
- Plant Quality and Food Security, Leibniz Institute of Vegetable and Ornamental Crops, 14979 Grossbeeren, Germany
| | - Susanne Baldermann
- NutriAct Competence Cluster Nutrition Research Berlin-Potsdam, 14558 Nuthetal, Germany
- Food4Future (F4F), c/o Leibniz Institute of Vegetable and Ornamental Crops (IGZ), 14979 Grossbeeren, Germany
- Plant Quality and Food Security, Leibniz Institute of Vegetable and Ornamental Crops, 14979 Grossbeeren, Germany
- Faculty of Life Sciences: Food, Nutrition & Health, University of Bayreuth, 95326 Kulmbach, Germany
| | - Hajo Haase
- Trace-Age-DFG Research Unit on Interactions of Essential Trace Elements in Healthy and Diseased Elderly (FOR 2558), Berlin-Potsdam-Jena-Wuppertal, 14558 Nuthetal, Germany
- Department of Food Chemistry and Toxicology, Technische Universität Berlin, 13355 Berlin, Germany
| | - Tanja Schwerdtle
- Department Food Chemistry, Institute of Nutritional Science, University of Potsdam, 14469 Potsdam, Germany
- NutriAct Competence Cluster Nutrition Research Berlin-Potsdam, 14558 Nuthetal, Germany
- Trace-Age-DFG Research Unit on Interactions of Essential Trace Elements in Healthy and Diseased Elderly (FOR 2558), Berlin-Potsdam-Jena-Wuppertal, 14558 Nuthetal, Germany
- German Federal Institute for Risk Assessment (BfR), 10589 Berlin, Germany
| | - Tilman Grune
- Department Food Chemistry, Institute of Nutritional Science, University of Potsdam, 14469 Potsdam, Germany
- NutriAct Competence Cluster Nutrition Research Berlin-Potsdam, 14558 Nuthetal, Germany
- Trace-Age-DFG Research Unit on Interactions of Essential Trace Elements in Healthy and Diseased Elderly (FOR 2558), Berlin-Potsdam-Jena-Wuppertal, 14558 Nuthetal, Germany
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany
- Food4Future (F4F), c/o Leibniz Institute of Vegetable and Ornamental Crops (IGZ), 14979 Grossbeeren, Germany
- Department of Physiological Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
| | - Daniela Weber
- NutriAct Competence Cluster Nutrition Research Berlin-Potsdam, 14558 Nuthetal, Germany
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany
- Food4Future (F4F), c/o Leibniz Institute of Vegetable and Ornamental Crops (IGZ), 14979 Grossbeeren, Germany
| |
Collapse
|
2
|
Schmitz C, Grambusch IM, Neutzling Lehn D, Hoehne L, Volken de Souza CF. A systematic review and meta-analysis of validated analytical techniques for the determination of total selenium in foods and beverages. Food Chem 2023; 429:136974. [PMID: 37499504 DOI: 10.1016/j.foodchem.2023.136974] [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: 05/05/2023] [Revised: 07/05/2023] [Accepted: 07/20/2023] [Indexed: 07/29/2023]
Abstract
The intricate balance between the beneficial and harmful effects of selenium (Se) intake means that its quantification in food needs to be done correctly. Therefore, in this review, we systematized 105 articles to identify the most studied methodologies, analytical techniques, and food matrices. Among the analytical techniques employed, inductively coupled plasma mass spectrometry (ICP-MS) (n = 29) emerged as the most commonly used method. The most prevalent hydrolysis methodology to digest Se in food matrices involved the use of nitric acid combined with ultrasound, which improved both the yield and digestion time. Optimal recovery values were achieved when total Se quantification accounted for the sum of Se(IV) and Se(VI) (94.4-99.4%) and for SeCys (88-96.5%). These findings are relevant for advancing methodological approaches, and their results emphasize the importance of developing alternative, faster, and lower-cost protocols for Se quantification in foods and beverages.
Collapse
Affiliation(s)
- Caroline Schmitz
- Food Biotechnology Laboratory, University of Vale do Taquari - Univates, Lajeado, RS, Brazil; Graduate Program in Biotechnology, University of Vale do Taquari - Univates, Lajeado, RS, Brazil
| | - Isabel Marie Grambusch
- Food Biotechnology Laboratory, University of Vale do Taquari - Univates, Lajeado, RS, Brazil
| | - Daniel Neutzling Lehn
- Food Biotechnology Laboratory, University of Vale do Taquari - Univates, Lajeado, RS, Brazil; Graduate Program in Biotechnology, University of Vale do Taquari - Univates, Lajeado, RS, Brazil
| | - Lucélia Hoehne
- Graduate Program in Biotechnology, University of Vale do Taquari - Univates, Lajeado, RS, Brazil
| | - Claucia Fernanda Volken de Souza
- Food Biotechnology Laboratory, University of Vale do Taquari - Univates, Lajeado, RS, Brazil; Graduate Program in Biotechnology, University of Vale do Taquari - Univates, Lajeado, RS, Brazil.
| |
Collapse
|
3
|
Martinez-Morata I, Sobel M, Tellez-Plaza M, Navas-Acien A, Howe CG, Sanchez TR. A State-of-the-Science Review on Metal Biomarkers. Curr Environ Health Rep 2023; 10:215-249. [PMID: 37337116 PMCID: PMC10822714 DOI: 10.1007/s40572-023-00402-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/26/2023] [Indexed: 06/21/2023]
Abstract
PURPOSE OF REVIEW Biomarkers are commonly used in epidemiological studies to assess metals and metalloid exposure and estimate internal dose, as they integrate multiple sources and routes of exposure. Researchers are increasingly using multi-metal panels and innovative statistical methods to understand how exposure to real-world metal mixtures affects human health. Metals have both common and unique sources and routes of exposure, as well as biotransformation and elimination pathways. The development of multi-element analytical technology allows researchers to examine a broad spectrum of metals in their studies; however, their interpretation is complex as they can reflect different windows of exposure and several biomarkers have critical limitations. This review elaborates on more than 500 scientific publications to discuss major sources of exposure, biotransformation and elimination, and biomarkers of exposure and internal dose for 12 metals/metalloids, including 8 non-essential elements (arsenic, barium, cadmium, lead, mercury, nickel, tin, uranium) and 4 essential elements (manganese, molybdenum, selenium, and zinc) commonly used in multi-element analyses. RECENT FINDINGS We conclude that not all metal biomarkers are adequate measures of exposure and that understanding the metabolic biotransformation and elimination of metals is key to metal biomarker interpretation. For example, whole blood is a good biomarker of exposure to arsenic, cadmium, lead, mercury, and tin, but it is not a good indicator for barium, nickel, and uranium. For some essential metals, the interpretation of whole blood biomarkers is unclear. Urine is the most commonly used biomarker of exposure across metals but it should not be used to assess lead exposure. Essential metals such as zinc and manganese are tightly regulated by homeostatic processes; thus, elevated levels in urine may reflect body loss and metabolic processes rather than excess exposure. Total urinary arsenic may reflect exposure to both organic and inorganic arsenic, thus, arsenic speciation and adjustment for arsebonetaine are needed in populations with dietary seafood consumption. Hair and nails primarily reflect exposure to organic mercury, except in populations exposed to high levels of inorganic mercury such as in occupational and environmental settings. When selecting biomarkers, it is also critical to consider the exposure window of interest. Most populations are chronically exposed to metals in the low-to-moderate range, yet many biomarkers reflect recent exposures. Toenails are emerging biomarkers in this regard. They are reliable biomarkers of long-term exposure for arsenic, mercury, manganese, and selenium. However, more research is needed to understand the role of nails as a biomarker of exposure to other metals. Similarly, teeth are increasingly used to assess lifelong exposures to several essential and non-essential metals such as lead, including during the prenatal window. As metals epidemiology moves towards embracing a multi-metal/mixtures approach and expanding metal panels to include less commonly studied metals, it is important for researchers to have a strong knowledge base about the metal biomarkers included in their research. This review aims to aid metals researchers in their analysis planning, facilitate sound analytical decision-making, as well as appropriate understanding and interpretation of results.
Collapse
Affiliation(s)
- Irene Martinez-Morata
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, 722 West 168th Street, 1107, New York, NY, 10032, USA.
| | - Marisa Sobel
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, 722 West 168th Street, 1107, New York, NY, 10032, USA
| | - Maria Tellez-Plaza
- Centro Nacional de Epidemiología, Instituto de Salud Carlos III, Madrid, Spain
| | - Ana Navas-Acien
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, 722 West 168th Street, 1107, New York, NY, 10032, USA
| | - Caitlin G Howe
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Tiffany R Sanchez
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, 722 West 168th Street, 1107, New York, NY, 10032, USA
| |
Collapse
|
4
|
Malka M, Du Laing G, Li J, Bohn T. Separate foliar sodium selenate and zinc oxide application enhances Se but not Zn accumulation in pea ( Pisum sativum L.) seeds. FRONTIERS IN PLANT SCIENCE 2022; 13:968324. [PMID: 36466269 PMCID: PMC9714566 DOI: 10.3389/fpls.2022.968324] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 10/03/2022] [Indexed: 06/17/2023]
Abstract
Up to 15% and 17% of the world population is selenium (Se) and zinc (Zn) deficient, respectively. Pea (Pisum sativum L.) is an important staple legume with a high potential for Se and Zn biofortification in seeds. A 2-year pot experiment investigated two pea varieties (Ambassador and Premium) following foliar-applied sodium selenate (0/50/100 g of Se/ha) and zinc oxide (0/375/750 g of Zn/ha) at the flowering stage. Selenate and zinc oxide had minimal overall effects on growth parameters. Zinc oxide did not improve Zn accumulation in both seed varieties, while selenate improved Se accumulation in both seed varieties dose-dependently. Premium accumulated greater amounts of Se in seeds than Ambassador (p < 0.001). Selenium concentrations were highest in seeds of Premium treated with 100 g of Se/ha [7.84 mg/kg DW vs. the control (0.16 mg/kg DW), p < 0.001]. The predominant Se species in Se-enriched seeds was selenomethionine (40%-76% of total Se). Furthermore, a significant (p < 0.01) positive correlation was found between Zn and S concentrations in Ambassador (r 2 = 0.446) and Premium (r 2 = 0.498) seeds, but not between Se and S. Consuming as little as 55 g/day of pea biofortified by 50 g of Se/ha would cover 100% of the adult RDA (55 µg) for Se. Findings are important for improving foliar biofortification of pea with Se and Zn.
Collapse
Affiliation(s)
- Maksymilian Malka
- Laboratory of Analytical Chemistry and Applied Ecochemistry, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Gijs Du Laing
- Laboratory of Analytical Chemistry and Applied Ecochemistry, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Jun Li
- Laboratory of Analytical Chemistry and Applied Ecochemistry, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Torsten Bohn
- Nutrition and Health Research Group, Department of Precision Health, Luxembourg Institute of Health, Strassen, Luxembourg
| |
Collapse
|
5
|
Wang M, Li B, Li S, Song Z, Kong F, Zhang X. Selenium in Wheat from Farming to Food. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:15458-15467. [PMID: 34907773 DOI: 10.1021/acs.jafc.1c04992] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Selenium (Se) plays an important role in human health. Approximately 80% of the world's population does not consume enough Se recommended by the World Health Organization. Wheat is an important staple food and Se source for most people in the world. This review summarizes literature about Se from 1936 to 2020 to investigate Se in wheat farming soil, wheat, and its derived foods. Se fortification and the recommended Se level in wheat were also discussed. Results showed that Se contents in wheat farming soil, grain, and its derived foods around the world were 3.8-552 μg kg-1 (mean of 220.99 μg kg-1), 0-8270 μg kg-1 (mean of 347.30 μg kg-1), and 15-2372 μg kg-1 (mean of 211.86 μg kg-1), respectively. Adopting suitable agronomic measures could effectively realize Se fortification in wheat. The contents in grain, flour, and its derived foods could be improved from 93.94 to 1181.92 μg kg-1, from 73.06 to 1007.75 μg kg-1, and from 86.90 to 587.61 μg kg-1 on average after leaf Se fertilizer application in the field. There was a significant positive correlation between the Se content in farming soil and grain, and it was extremely the same between the foliar Se fertilizer concentration rate and the grain Se increased rate. The recommended Se fortification level in cultivation of wheat in China, India, and Spain was 18.53-23.96, 2.65-3.37, and 3.93-9.88 g hm-2, respectively. Milling processing and food type could greatly affect the Se content of wheat-derived food and should be considered seriously to meet people's Se requirement by wheat.
Collapse
Affiliation(s)
- Min Wang
- Shandong Agricultural University, 61 Daizong Street, Taian, Shandong 271018, People's Republic of China
| | - Baoqiang Li
- Linyi Academy of Agricultural Sciences, 351 Wuhe North Street, Lanshan District, Linyi, Shandong 276003, People's Republic of China
| | - Shuang Li
- Shandong Agricultural University, 61 Daizong Street, Taian, Shandong 271018, People's Republic of China
| | - Ziwei Song
- Shandong Agricultural University, 61 Daizong Street, Taian, Shandong 271018, People's Republic of China
| | - Fanmei Kong
- Shandong Agricultural University, 61 Daizong Street, Taian, Shandong 271018, People's Republic of China
| | - Xiaocun Zhang
- Shandong Agricultural University, 61 Daizong Street, Taian, Shandong 271018, People's Republic of China
| |
Collapse
|
6
|
Selenium speciation and bioaccessibility in Se-fertilised crops of dietary importance in Malawi. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2021.103841] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
7
|
Designing selenium functional foods and beverages: A review. Food Res Int 2019; 120:708-725. [DOI: 10.1016/j.foodres.2018.11.029] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 10/15/2018] [Accepted: 11/15/2018] [Indexed: 02/07/2023]
|
8
|
Čadková Z, Száková J, Tremlová J, Kopecký O, Žíla O, Tlustoš P. Metabolic transformation and urinary excretion of selenium (Se) in rats fed a Se-enriched defatted rapeseed (Brassica napus, L.) diet. Metallomics 2018; 10:579-586. [DOI: 10.1039/c7mt00325k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Se-enriched defatted rapeseed can be a suitable Se-supplement in diet of monogasters.
Collapse
Affiliation(s)
- Zuzana Čadková
- Department of Zoology and Fisheries
- Faculty of Agrobiology
- Food and Natural Resources
- Czech University of Life Sciences Prague
- Czech Republic
| | - Jiřina Száková
- Department of Agroenvironmental Chemistry and Plant Nutrition
- Faculty of Agrobiology
- Food and Natural Resources
- Czech University of Life Sciences Prague
- Czech Republic
| | - Jana Tremlová
- Department of Agroenvironmental Chemistry and Plant Nutrition
- Faculty of Agrobiology
- Food and Natural Resources
- Czech University of Life Sciences Prague
- Czech Republic
| | - Oldřich Kopecký
- Department of Zoology and Fisheries
- Faculty of Agrobiology
- Food and Natural Resources
- Czech University of Life Sciences Prague
- Czech Republic
| | - Ondřej Žíla
- Department of Zoology and Fisheries
- Faculty of Agrobiology
- Food and Natural Resources
- Czech University of Life Sciences Prague
- Czech Republic
| | - Pavel Tlustoš
- Department of Agroenvironmental Chemistry and Plant Nutrition
- Faculty of Agrobiology
- Food and Natural Resources
- Czech University of Life Sciences Prague
- Czech Republic
| |
Collapse
|
9
|
Montes-Bayón M, Bettmer J. The Use of Stable Isotopic Tracers in Metallomics Studies. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1055:111-137. [DOI: 10.1007/978-3-319-90143-5_6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
10
|
Xiao Z, Li S, Guo J, Rao Z, Liu C, Jia Z, Suo D, Wang S, Li Y, Fan X. Application of enzymatic probe sonication for selenium speciation in animal feeds. J Chromatogr A 2017; 1530:51-58. [PMID: 29169645 DOI: 10.1016/j.chroma.2017.11.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 11/11/2017] [Accepted: 11/13/2017] [Indexed: 01/12/2023]
Abstract
Enzymatic probe sonication (EPS) was investigated as a novel and alternative technology for the extraction of five Se species SeCys2, MeSeCys, Se (IV), SeMet and Se (VI) from animal feeds. The critical parameters of EPS such as enzyme types, ultrasonic power, sample/enzyme ratio, extraction time and temperature were carefully optimized. Under current conditions, one sample can be extracted in 60s, in contrast to several hours required by the conventional enzymatic methods Moreover, the extraction is performed in pure water, no further temperature control or pH adjustment is needed, and therefore the risk of species interconvertion is drastically reduced or inhibited. The Se species were separated and quantitatively determined by high-performance liquid chromatography-hydride generation atomic fluorescence spectrometry (HPLC-HG-AFS), which allows the separation of organic and inorganic Se species in a single chromatographic run. The newly developed method was successfully applied to the determination of Se species in 18 feed samples collected from markets and local farms. Concerning the feed samples studied, the results of this work suggest that stricter measures should be taken to control the Se-enriched feed supplements in terms of Se species.
Collapse
Affiliation(s)
- Zhiming Xiao
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Sheng Li
- Shaanxi Provincial Feed Testing Institute, Xi'an 710016, China
| | - Jiangpeng Guo
- Beijing General Station of Animal Husbandry, Beijing 100107, China
| | - Zhenghua Rao
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Chengxin Liu
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Zheng Jia
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Decheng Suo
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Shi Wang
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yang Li
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xia Fan
- Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| |
Collapse
|
11
|
Moreda-Piñeiro J, Moreda-Piñeiro A, Bermejo-Barrera P. In vivo and in vitro testing for selenium and selenium compounds bioavailability assessment in foodstuff. Crit Rev Food Sci Nutr 2015; 57:805-833. [DOI: 10.1080/10408398.2014.934437] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
12
|
Sánchez-Martínez M, Pérez-Corona T, Caímara C, Madrid Y. Preparation and characterization of a laboratory scale selenomethionine-enriched bread. Selenium bioaccessibility. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:120-127. [PMID: 25555185 DOI: 10.1021/jf505069d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study focuses on the preparation at lab scale of selenomethionine-enriched white and wholemeal bread. Selenium was supplemented either by adding selenite directly to the dough or by using lab-made selenium-enriched yeast. The best results were obtained when using fresh selenium-enriched yeast. The optimum incubation time for selenomethionine-enriched yeast preparation, while keeping formation of selenium byproducts to a minimum, was 96 h. Selenium content measured by isotope dilution analysis (IDA)-ICP-MS in Se-white and Se-wholemeal bread was 1.28 ± 0.02 μg g–1 and 1.16 ± 0.02 μg g–1 (expressed as mean ± SE, 3 replicates), respectively. HPLC postcolumn IDA-ICP-MS measurements revealed that selenomethionine was the main Se species found in Se-enriched bread, which accounted for ca. 80% of total selenium. In vitro gastrointestinal digestion assay provided selenium bioaccessibility values of 100 ± 3% and 40 ± 1% for white and wholemeal Se-enriched bread, respectively, being selenomethionine the main bioaccessible Se species in white bread, while in wholemeal bread this compound was undetectable.
Collapse
|
13
|
Sánchez-Martínez M, Pérez-Corona T, Martínez-Villaluenga C, Frías J, Peñas E, Porres JM, Urbano G, Cámara C, Madrid Y. Synthesis of [(77)Se]-methylselenocysteine when preparing sauerkraut in the presence of [(77)Se]-selenite. Metabolic transformation of [ (77)Se]-methylselenocysteine in Wistar rats determined by LC-IDA-ICP-MS. Anal Bioanal Chem 2014; 406:7949-58. [PMID: 25311192 DOI: 10.1007/s00216-014-8224-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 09/25/2014] [Accepted: 09/30/2014] [Indexed: 10/24/2022]
Abstract
The use of enriched Se isotopes as tracers has provided important information on Se metabolism. However, selenium isotopes are expensive and difficult to obtain. A simple and cheap strategy based on the production of [(77)Se]-methylselenocysteine ([(77)Se]-MeSeCys) when preparing sauerkraut in the presence of [(77)Se]-selenite was developed. The resulting [(77)Se]-MeSeCys was used for evaluating the metabolic transformation of MeSeCys in Wistar rats, by feeding them with an AIN-93 M diet containing 20 % sauerkraut enriched in [(77)Se]-MeSeCys. Organs (liver, kidney, brain, testicles, and heart) were obtained after seven days of treatment and subjected to total selenium and selenium-speciation analysis by high-performance liquid chromatography coupled with isotope-dilution-analysis inductively-coupled-plasma mass spectrometry (HPLC-IDA-ICP-MS). Analysis of (77)Se-labeled organs revealed a prominent increase (more than 100 % Se-level enhancement) of selenium in the kidney and heart, whereas in the liver selenium concentration only increased by up to 20 % and it remained constant in the brain and testicles. (77)Se-enriched-sauerkraut supplementation does not alter the concentration of other essential elements in comparison to controls except for in the heart and kidney, in which selenium was positively correlated with Mg, Zn, Cu, and Mo. HPLC-ICP-MS analysis of hydrolyzed extracts after carbamidomethylation of the (77)Se-labeled organs revealed the presence of [(77)Se]-SeCys and an unknown Se-containing peak, the identity of which could not be verified by electrospray-ionization (ESI)-MS-MS. Low amounts of [(77)Se]-MeSeCys were found in (77)Se-labeled liver and kidney extracts, suggesting the incorporation of this selenium species in its intact form.
Collapse
Affiliation(s)
- María Sánchez-Martínez
- Department of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, Av. Complutense s/n, 28040, Madrid, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Bodnar M, Szczyglowska M, Konieczka P, Namiesnik J. Methods of Selenium Supplementation: Bioavailability and Determination of Selenium Compounds. Crit Rev Food Sci Nutr 2014; 56:36-55. [DOI: 10.1080/10408398.2012.709550] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
15
|
Poblaciones MJ, Rodrigo S, Santamaria O, Chen Y, McGrath SP. Selenium accumulation and speciation in biofortified chickpea (Cicer arietinum L.) under Mediterranean conditions. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2014; 94:1101-6. [PMID: 23983062 DOI: 10.1002/jsfa.6372] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 08/14/2013] [Accepted: 08/23/2013] [Indexed: 05/02/2023]
Abstract
BACKGROUND Millions of people have Se-deficient diets and Se-biofortified crops could prevent such deficiency. The aim of the present study was to evaluate the potential of chickpea for use in Se fertilization programs in order to increase available Se. Two foliar Se fertilizers (sodium selenate and sodium selenite) at four rates (0, 10, 20, 40 g ha(-1)) were tested in the 2010/2011 and 2011/2012 growing seasons in a field experiment conducted under semiarid Mediterranean conditions. RESULTS Sodium selenate was much more effectively taken by plants than sodium selenite, and there was a strong and linear relationship between total Se content and Se rate for both. For each gram of Se fertilizer, applied either as sodium selenate or sodium selenite, the increases of total Se concentration in grain were 126 and 87, and 25 and 19 µg Se kg(-1) dry weight, in 2010/2011 and 2011/2012, respectively. Se was found to be incorporated into chickpea grains mainly (>70%) as selenomethionine. CONCLUSION Se-enriched chickpeas would be a good candidate for inclusion in biofortification programs under semiarid Mediterranean conditions and for promotion as a 'functional food'.
Collapse
Affiliation(s)
- Maria J Poblaciones
- Department of Ingeniería del Medio Agronómico y Forestal, Escuela de Ingenierías Agrarias, University of Extremadura, 06007, Badajoz, Spain
| | | | | | | | | |
Collapse
|
16
|
Hurst R, Collings R, Harvey LJ, King M, Hooper L, Bouwman J, Gurinovic M, Fairweather-Tait SJ. EURRECA-Estimating selenium requirements for deriving dietary reference values. Crit Rev Food Sci Nutr 2014; 53:1077-96. [PMID: 23952089 DOI: 10.1080/10408398.2012.742861] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Current reference values for selenium, an essential micronutrient, are based on the intake of selenium that is required to achieve maximal glutathione peroxidase activity in plasma or erythrocytes. In order to assess the evidence of relevance to setting dietary reference values for selenium, the EURRECA Network of Excellence focused on systematic searches, review, and evaluation of (i) selenium status biomarkers and evidence for relationships between intake and status biomarkers, (ii) selenium and health (including the effect of intake and/or status biomarkers on cancer risk, immune function, HIV, cognition, and fertility), (iii) bioavailability of selenium from the diet, and (iv) impact of genotype/single nucleotide polymorphisms on status or health outcomes associated with selenium. The main research outputs for selenium and future research priorities are discussed further in this review.
Collapse
Affiliation(s)
- Rachel Hurst
- Department of Nutrition, Norwich Medical School, University of East Anglia, Norwich, Norfolk, NR4 7TJ, UK
| | | | | | | | | | | | | | | |
Collapse
|
17
|
Jang HY, Min H, Lee J, Pak YN. Studies of separation and quantitation for selenium species in food. ANALYTICAL SCIENCE AND TECHNOLOGY 2013. [DOI: 10.5806/ast.2013.26.3.182] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
18
|
Wang S, Wei M, Huang Y. Biosorption of multifold toxic heavy metal ions from aqueous water onto food residue eggshell membrane functionalized with ammonium thioglycolate. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4988-96. [PMID: 23663117 DOI: 10.1021/jf4003939] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A new biosorbent material from eggshell membrane was synthesized through thiol functionalization, which is based on the reduction of disulfide bonds in eggshell membrane by ammonium thioglycolate. The thiol-functionalized eggshell membrane was characterized, and its application as an adsorbent for removal of Cr(VI), Hg(II), Cu(II), Pb(II), Cd(II), and Ag(I) from aqueous water has been investigated. The experimental results revealed that the adsorption abilities of the thiol-functionalized eggshell membrane toward Cr(VI), Hg(II), Cu(II), Pb(II), Cd(II), and Ag(I) improved 1.6-, 5.5-, 7.7-, 12.4-, 12.7-, and 21.1-fold, respectively, compared with that of the eggshell membrane control. The adsorption mechanism and adsorption performance, including the adsorption capacity and the kinetics of the thiol-functionalized eggshell membrane for the target heavy metals, were investigated. The effects of solution pH, coexisting substances, and natural water matrices were studied. The thiol-functionalized eggshell membrane can be used as column packing to fabricate a column for real wastewater purification.
Collapse
Affiliation(s)
- Sha Wang
- State Key Laboratory Breeding Base of Eco-Environments and Bio-Resources of the Three Gorges Reservoir Region, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | | | | |
Collapse
|
19
|
Aureli F, Ouerdane L, Bierla K, Szpunar J, Prakash NT, Cubadda F. Identification of selenosugars and other low-molecular weight selenium metabolites in high-selenium cereal crops. Metallomics 2013; 4:968-78. [PMID: 22802147 DOI: 10.1039/c2mt20085f] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Several novel selenium containing compounds were characterized in staple crops (wheat, rice and maize) grown on soils naturally rich in selenium. A dedicated method based on the coupling of liquid chromatography with multiplexed detection (ICP-MS, ESI-Orbitrap MS(/MS)) was developed for the speciation of low-molecular weight (<5 kDa) selenium metabolites. Nine species present in different proportions as a function of the crop type were identified by cation-exchange HPLC-ESI-Orbitrap MS on the basis of the accurate molecular mass and MS/MS spectra. The natural origin of these species was then validated by varying extraction conditions and by using hydrophilic interaction LC (HILIC)-ESI-Orbitrap MS(/MS). Among the identified compounds, Se-containing monosaccharides (hexose moiety, m/z 317 and m/z 358) or Se-containing disaccharides (hexose-pentose moiety, m/z 407 and m/z 408) were the first selenosugars reported in edible plants. It is also the first report of the presence of 2,3-dihydroxypropionyl-selenolanthionine (m/z 345) in rice. Because these crops can be an important source of selenium in animal and human nutrition, the understanding of the origin and the fate of these species during metabolic processes will be of great interest.
Collapse
Affiliation(s)
- Federica Aureli
- Istituto Superiore di Sanità, Department of Food Safety and Veterinary Public Health, Rome, Italy
| | | | | | | | | | | |
Collapse
|
20
|
Yin Y, Liu J, Jiang G. Recent advances in speciation analysis of mercury, arsenic and selenium. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s11434-012-5497-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
21
|
Premarathna L, McLaughlin MJ, Kirby JK, Hettiarachchi GM, Stacey S, Chittleborough DJ. Selenate-enriched urea granules are a highly effective fertilizer for selenium biofortification of paddy rice grain. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:6037-44. [PMID: 22630040 DOI: 10.1021/jf3005788] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
This study examined the effects of applied selenium (Se) species, time of application, method of application, and soil water management regimen on the accumulation of Se in rice plants. Plants were grown to maturity in a temperature- and humidity-controlled growth chamber using three water management methods: field capacity (FC), submerged until harvest, and submerged and drained 2 weeks before harvest. Two Se species, selenate (SeO4(2-)) and selenite (SeO3(2-)), were applied at a rate equivalent to 30 g ha(-1). Four application methods were employed as follows: (i) Se applied at soil preparation, (ii) Se-enriched urea granules applied to floodwater at heading; (iii) foliar Se applied at heading; and (iv) fluid fertilizer Se applied to soil or floodwater at heading. Total Se concentrations in rice grains, husks, leaves, culms, and roots were measured, as well as Se speciation in grains from the Se-enriched urea granule treatment. Highest Se concentrations in the grain occurred with SeO4(2-) and with fertilizer applied at heading stage; SeO4(2-)-enriched urea granules applied at heading increased grain Se concentrations 5-6-fold (by 450-600 μg kg(-1)) compared to the control (no fertilizer Se applied) in all water treatments. Under paddy conditions other Se fertilization strategies were much less effective. Drainage before harvesting caused Se to accumulate in/on rice roots, possibly through adsorption onto iron plaque on roots. Rice grains contained Se mainly in the organic form as selenomethionine (SeM), which comprised >90% of the total grain Se in treatments fertilized with SeO4(2-)-enriched urea granules. The results of this study clearly show that of the fertilizer strategies tested biofortification of Se in rice grains can best be achieved in lowland rice by broadcast application of SeO4(2-)-enriched urea granules to floodwater at heading stage.
Collapse
Affiliation(s)
- Lakmalie Premarathna
- Soil Science, School of Agriculture, Food and Wine, Waite Research Institute, The University of Adelaide , Urrbrae, SA 5064, Australia
| | | | | | | | | | | |
Collapse
|
22
|
Hart DJ, Fairweather-Tait SJ, Broadley MR, Dickinson SJ, Foot I, Knott P, McGrath SP, Mowat H, Norman K, Scott PR, Stroud JL, Tucker M, White PJ, Zhao FJ, Hurst R. Selenium concentration and speciation in biofortified flour and bread: Retention of selenium during grain biofortification, processing and production of Se-enriched food. Food Chem 2010; 126:1771-8. [PMID: 25213956 DOI: 10.1016/j.foodchem.2010.12.079] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 11/16/2010] [Accepted: 12/16/2010] [Indexed: 11/19/2022]
Abstract
The retention and speciation of selenium in flour and bread was determined following experimental applications of selenium fertilisers to a high-yielding UK wheat crop. Flour and bread were produced using standard commercial practices. Total selenium was measured using inductively coupled plasma-mass spectrometry (ICP-MS) and the profile of selenium species in the flour and bread were determined using high performance liquid chromatography (HPLC) ICP-MS. The selenium concentration of flour ranged from 30ng/g in white flour and 35ng/g in wholemeal flour from untreated plots up to >1800ng/g in white and >2200ng/g in wholemeal flour processed from grain treated with selenium (as selenate) at the highest application rate of 100g/ha. The relationship between the amount of selenium applied to the crop and the amount of selenium in flour and bread was approximately linear, indicating minimal loss of Se during grain processing and bread production. On average, application of selenium at 10g/ha increased total selenium in white and wholemeal bread by 155 and 185ng/g, respectively, equivalent to 6.4 and 7.1μg selenium per average slice of white and wholemeal bread, respectively. Selenomethionine accounted for 65-87% of total extractable selenium species in Se-enriched flour and bread; selenocysteine, Se-methylselenocysteine selenite and selenate were also detected. Controlled agronomic biofortification of wheat crops for flour and bread production could provide an appropriate strategy to increase the intake of bioavailable selenium.
Collapse
Affiliation(s)
- D J Hart
- Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
| | | | - M R Broadley
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD, UK
| | - S J Dickinson
- Premier Foods, Rank Hovis, Solent Mills, Western Docks, Southampton SO15 1BS, UK
| | - I Foot
- Limagrain UK Ltd., Woolpit Business Park, Windmill Avenue, Woolpit, Bury St. Edmunds, Suffolk IP30 0RA, UK
| | - P Knott
- Marks and Spencer plc, Waterside House, 35 North Wharf Road, London W2 1NW, UK
| | - S P McGrath
- Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK
| | - H Mowat
- Marks and Spencer plc, Waterside House, 35 North Wharf Road, London W2 1NW, UK
| | - K Norman
- Velcourt R&D, The Stables, Red House Farm, Woodwalton, Huntingdon, Cambridgeshire PE28 5YL, UK
| | - P R Scott
- Carr's Fertilisers, Old Croft, Stanwix, Carlisle CA3 9BA, UK
| | - J L Stroud
- Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK
| | - M Tucker
- Yara (UK) Ltd., Immingham Docks, NE Lincolnshire DN4U 2NS, UK
| | - P J White
- Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, UK
| | - F J Zhao
- Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK
| | - R Hurst
- Norwich Medical School, University of East Anglia, Norwich NR4 7TJ, UK.
| |
Collapse
|
23
|
Wang W, Chen Z, Davey DE, Naidu R. SPECIATION OF SELENIUM IN BIOLOGICAL SAMPLES BY ION CHROMATOGRAPHY WITH INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY. J LIQ CHROMATOGR R T 2010. [DOI: 10.1080/10826076.2010.484363] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Weihong Wang
- a School of Pharmaceutical and Medical Sciences, University of South Australia , City East Campus , South Australia , Australia
- b Cooperative Research Centre for Contamination Assessment and Remediation of Environments, Mawson Lakes Boulevard , Mawson Lakes , Australia
- c Centre for Environmental Risk Assessment and Remediation, University of South Australia , Mawson Lakes , Australia
| | - ZuLiang Chen
- b Cooperative Research Centre for Contamination Assessment and Remediation of Environments, Mawson Lakes Boulevard , Mawson Lakes , Australia
- c Centre for Environmental Risk Assessment and Remediation, University of South Australia , Mawson Lakes , Australia
| | - David Edward Davey
- a School of Pharmaceutical and Medical Sciences, University of South Australia , City East Campus , South Australia , Australia
| | - Ravendra Naidu
- b Cooperative Research Centre for Contamination Assessment and Remediation of Environments, Mawson Lakes Boulevard , Mawson Lakes , Australia
- c Centre for Environmental Risk Assessment and Remediation, University of South Australia , Mawson Lakes , Australia
| |
Collapse
|
24
|
Fairweather-Tait SJ, Collings R, Hurst R. Selenium bioavailability: current knowledge and future research requirements. Am J Clin Nutr 2010; 91:1484S-1491S. [PMID: 20200264 DOI: 10.3945/ajcn.2010.28674j] [Citation(s) in RCA: 256] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Information on selenium bioavailability is required to derive dietary recommendations and to evaluate and improve the quality of food products. The need for robust data is particularly important in light of recent suggestions of potential health benefits associated with different intakes of selenium. The issue is not straightforward, however, because of large variations in the selenium content of foods (determined by a combination of geologic/environmental factors and selenium supplementation of fertilizers and animal feedstuffs) and the chemical forms of the element, which are absorbed and metabolized differently. Although most dietary selenium is absorbed efficiently, the retention of organic forms is higher than that of inorganic forms. There are also complications in the assessment and quantification of selenium species within foodstuffs. Often, extraction is only partial, and the process can alter the form or forms present in the food. Efforts to improve, standardize, and make more widely available techniques for species quantification are required. Similarly, reliable and sensitive functional biomarkers of selenium status are required, together with improvements in current biomarker methods. This requirement is particularly important for the assessment of bioavailability, because some functional biomarkers respond differently to the various selenium species. The effect of genotype adds a potential further dimension to the process of deriving bioavailability estimates and underlines the need for further research to facilitate the process of deriving dietary recommendations in the future.
Collapse
Affiliation(s)
- Susan J Fairweather-Tait
- School of Medicine, Health Policy & Practice, University of East Anglia, Norwich, NR4 7TJ, United Kingdom.
| | | | | |
Collapse
|
25
|
Cubadda F, Aureli F, Ciardullo S, D'Amato M, Raggi A, Acharya R, Reddy RAV, Prakash NT. Changes in selenium speciation associated with increasing tissue concentrations of selenium in wheat grain. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:2295-301. [PMID: 20102199 DOI: 10.1021/jf903004a] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Wheat (Triticum aestivum) collected in the Nawanshahr-Hoshiarpur Region (Punjab, India) showed the highest selenium concentrations ever recorded in cereal grains (29-185 microg g(-1)). There was a strong positive relationship between the selenium content in shoots and that in kernels, showing that grain selenium concentration can be predicted from that in the vegetative tissues of the plant. The identity and content of the selenocompounds in the grain samples and in wheat-based reference materials were investigated by HPLC-ICP-dynamic reaction cell-MS. Reversed-phase, cation exchange, and anion exchange HPLC were used to separate the selenium species after ultrasound-assisted enzymatic extraction with an ultrasonic probe. Selenomethionine and selenate accounted for 72-85% and 2-6% of the sum of the selenium species, respectively. The proportion of organic Se species varied with increasing Se content; namely, SeMet showed a relative reduction whereas the other organoselenium compounds increased up to 18-22% of the total chromatographed selenium. Se-methyl-selenocysteine was detected as a minor compound (0.2-0.5%) in high-Se wheat by both reversed-phase and cation exchange HPLC using retention time matching with the standard substance spiked to the sample extracts. Regular consumption of locally produced wheat-based food items may lead the population of the study area to an excessive intake of selenium. On the other hand, the large predominance of selenomethionine shows that local wheat can be a promising raw material for naturally enriched products to be used to supplement human and animal diets in low selenium areas.
Collapse
Affiliation(s)
- Francesco Cubadda
- Food and Veterinary Toxicology Unit, Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanita, Viale Regina Elena 299, Rome 00161, Italy
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Bai Y, Wang T, Liu Y, Zheng W. Electrochemical oxidation of selenocystine and selenomethionine. Colloids Surf B Biointerfaces 2009; 74:150-3. [PMID: 19665878 DOI: 10.1016/j.colsurfb.2009.07.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2009] [Revised: 05/31/2009] [Accepted: 07/10/2009] [Indexed: 10/20/2022]
|
27
|
Novel approaches for selenium speciation in foodstuffs and biological specimens: A review. Anal Chim Acta 2009; 634:135-52. [DOI: 10.1016/j.aca.2008.12.026] [Citation(s) in RCA: 206] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2008] [Revised: 11/06/2008] [Accepted: 12/15/2008] [Indexed: 11/21/2022]
|
28
|
Infante HG, Borrego AA, Peachey E, Hearn R, O'Connor G, Barrera TG, Ariza JLG. Study of the effect of sample preparation and cooking on the selenium speciation of selenized potatoes by HPLC with ICP-MS and electrospray ionization MS/MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:38-45. [PMID: 19093878 DOI: 10.1021/jf802650q] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The efficiency of enzymatic hydrolysis and leaching with water using accelerated solvent extraction (ASE) or boiling was investigated for quantitative Se speciation in selenized potatoes using reversed phase HPLC coupled to ICP-MS. Preliminary identification of selenomethionine (SeMet), Se-methylselenocysteine (SeMeCys), and selenate in extracts of potato skin and flesh was achieved using complementary reversed phase and anion-exchange HPLC-ICP-MS and retention time matching with standards. The quantitative speciation data revealed a higher percentage of selenomethionine (73% of the total Se) found in the flesh in comparison with skin (containing 21% of the total Se as SeMet). ASE and boiling in water were found to be similar in terms of Se extraction efficiency and profiles. However, ASE was found to be more efficient than boiling with respect to sample cleanup and reduced sample handling. The presence of SeMet at parts per billion levels in selenized potatoes was confirmed by reversed phase HPLC with online ESI MS/MS.
Collapse
|