Evaluation of selenium in dietary supplements using elemental speciation
•Heated water extraction liberates relevant selenium forms.•Method capable of assessing selenium-enriched dietary supplement labelling and quality.•Quantifies critical selenium species and their respective oxidation products.•Robust methodology suitable for routine analysis of selenium-enriched diet...
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Published in | Food chemistry Vol. 218; pp. 313 - 320 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Elsevier Ltd
01.03.2017
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Subjects | |
Online Access | Get full text |
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Abstract | •Heated water extraction liberates relevant selenium forms.•Method capable of assessing selenium-enriched dietary supplement labelling and quality.•Quantifies critical selenium species and their respective oxidation products.•Robust methodology suitable for routine analysis of selenium-enriched dietary supplements.
Selenium-enriched dietary supplements containing various selenium compounds are readily available to consumers. To ensure proper selenium intake and consumer confidence, these dietary supplements must be safe and have accurate label claims. Varying properties among selenium species requires information beyond total selenium concentration to fully evaluate health risk/benefits
A LC-ICP-MS method was developed and multiple extraction methods were implemented for targeted analysis of common “seleno-amino acids” and related oxidation products, selenate, selenite, and other species relatable to the quality and/or accuracy of the labeled selenium ingredients. Ultimately, a heated water extraction was applied to recover selenium species from non-selenized yeast supplements in capsule, tablet, and liquid forms. For selenized yeast supplements, inorganic selenium was monitored as a means of assessing selenium yeast quality. A variety of commercially available selenium supplements were evaluated and discrepancies between labeled ingredients and detected species were noted. |
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AbstractList | Selenium-enriched dietary supplements containing various selenium compounds are readily available to consumers. To ensure proper selenium intake and consumer confidence, these dietary supplements must be safe and have accurate label claims. Varying properties among selenium species requires information beyond total selenium concentration to fully evaluate health risk/benefits
A LC-ICP-MS method was developed and multiple extraction methods were implemented for targeted analysis of common “seleno-amino acids” and related oxidation products, selenate, selenite, and other species relatable to the quality and/or accuracy of the labeled selenium ingredients. Ultimately, a heated water extraction was applied to recover selenium species from non-selenized yeast supplements in capsule, tablet, and liquid forms. For selenized yeast supplements, inorganic selenium was monitored as a means of assessing selenium yeast quality. A variety of commercially available selenium supplements were evaluated and discrepancies between labeled ingredients and detected species were noted. Selenium-enriched dietary supplements containing various selenium compounds are readily available to consumers. To ensure proper selenium intake and consumer confidence, these dietary supplements must be safe and have accurate label claims. Varying properties among selenium species requires information beyond total selenium concentration to fully evaluate health risk/benefits A LC-ICP-MS method was developed and multiple extraction methods were implemented for targeted analysis of common "seleno-amino acids" and related oxidation products, selenate, selenite, and other species relatable to the quality and/or accuracy of the labeled selenium ingredients. Ultimately, a heated water extraction was applied to recover selenium species from non-selenized yeast supplements in capsule, tablet, and liquid forms. For selenized yeast supplements, inorganic selenium was monitored as a means of assessing selenium yeast quality. A variety of commercially available selenium supplements were evaluated and discrepancies between labeled ingredients and detected species were noted. •Heated water extraction liberates relevant selenium forms.•Method capable of assessing selenium-enriched dietary supplement labelling and quality.•Quantifies critical selenium species and their respective oxidation products.•Robust methodology suitable for routine analysis of selenium-enriched dietary supplements. Selenium-enriched dietary supplements containing various selenium compounds are readily available to consumers. To ensure proper selenium intake and consumer confidence, these dietary supplements must be safe and have accurate label claims. Varying properties among selenium species requires information beyond total selenium concentration to fully evaluate health risk/benefits A LC-ICP-MS method was developed and multiple extraction methods were implemented for targeted analysis of common “seleno-amino acids” and related oxidation products, selenate, selenite, and other species relatable to the quality and/or accuracy of the labeled selenium ingredients. Ultimately, a heated water extraction was applied to recover selenium species from non-selenized yeast supplements in capsule, tablet, and liquid forms. For selenized yeast supplements, inorganic selenium was monitored as a means of assessing selenium yeast quality. A variety of commercially available selenium supplements were evaluated and discrepancies between labeled ingredients and detected species were noted. |
Author | Hanley, Traci Caruso, Joseph Mantha, Madhavi Oliveira, Aline Kassa, Zena Wilson, Robert A. Landero, Julio Kubachka, Kevin M. Falconer, Travis M. |
AuthorAffiliation | a US FDA Forensic Chemistry Center, Cincinnati, OH 45237, USA b Minnesota Department of Agriculture, Saint Paul, MN 55155, USA c University of Cincinnati, Department of Chemistry, Cincinnati, OH, USA |
AuthorAffiliation_xml | – name: b Minnesota Department of Agriculture, Saint Paul, MN 55155, USA – name: a US FDA Forensic Chemistry Center, Cincinnati, OH 45237, USA – name: c University of Cincinnati, Department of Chemistry, Cincinnati, OH, USA |
Author_xml | – sequence: 1 givenname: Kevin M. surname: Kubachka fullname: Kubachka, Kevin M. email: kevin.kubachka@fda.hhs.gov organization: US FDA Forensic Chemistry Center, Cincinnati, OH 45237, USA – sequence: 2 givenname: Traci surname: Hanley fullname: Hanley, Traci email: traci.hanley@fda.hhs.gov organization: US FDA Forensic Chemistry Center, Cincinnati, OH 45237, USA – sequence: 3 givenname: Madhavi surname: Mantha fullname: Mantha, Madhavi email: madhavi.mantha@fda.hhs.gov organization: US FDA Forensic Chemistry Center, Cincinnati, OH 45237, USA – sequence: 4 givenname: Robert A. surname: Wilson fullname: Wilson, Robert A. email: robert.wilson@fda.hhs.gov organization: US FDA Forensic Chemistry Center, Cincinnati, OH 45237, USA – sequence: 5 givenname: Travis M. surname: Falconer fullname: Falconer, Travis M. email: travis.falconer@fda.hhs.gov organization: US FDA Forensic Chemistry Center, Cincinnati, OH 45237, USA – sequence: 6 givenname: Zena surname: Kassa fullname: Kassa, Zena email: zena.kassa@state.mn.us organization: Minnesota Department of Agriculture, Saint Paul, MN 55155, USA – sequence: 7 givenname: Aline surname: Oliveira fullname: Oliveira, Aline email: alinefo@gmail.com organization: University of Cincinnati, Department of Chemistry, Cincinnati, OH, USA – sequence: 8 givenname: Julio surname: Landero fullname: Landero, Julio email: julio_landero80@yahoo.com organization: University of Cincinnati, Department of Chemistry, Cincinnati, OH, USA – sequence: 9 givenname: Joseph surname: Caruso fullname: Caruso, Joseph organization: University of Cincinnati, Department of Chemistry, Cincinnati, OH, USA |
BackLink | https://www.ncbi.nlm.nih.gov/pubmed/27719915$$D View this record in MEDLINE/PubMed |
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Keywords | Dietary supplement Selenium LC-ICP-MS Speciation |
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Notes | Present address: University of Sao Carlos, Group of Applied Instrumental Analysis, Department of Chemistry, Sao Carlos, SP 13565-905, Brazil. E-mail addresses: traci.hanley@ fda.hhs.gov (T. Hanley), madhavi.mantha@fda.hhs.gov (M. Mantha), robert.wilson@fda.hhs.gov (R.A. Wilson), travis.falconer@fda.hhs.gov (T.M. Falconer), zena.kassa@state.mn.us (Z. Kassa), alinefo@gmail.com (A. Oliveira), julio_landero80@yahoo.com (J. Landero). Deceased. |
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Snippet | •Heated water extraction liberates relevant selenium forms.•Method capable of assessing selenium-enriched dietary supplement labelling and quality.•Quantifies... Selenium-enriched dietary supplements containing various selenium compounds are readily available to consumers. To ensure proper selenium intake and consumer... |
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SubjectTerms | Dietary supplement Dietary Supplements - analysis Dietary Supplements - standards Dose-Response Relationship, Drug LC-ICP-MS Selenic Acid - analysis Selenium Selenium - analysis Selenium Compounds - analysis Selenocysteine - analogs & derivatives Selenocysteine - analysis Selenomethionine - analysis Speciation |
Title | Evaluation of selenium in dietary supplements using elemental speciation |
URI | https://dx.doi.org/10.1016/j.foodchem.2016.08.086 https://www.ncbi.nlm.nih.gov/pubmed/27719915 https://pubmed.ncbi.nlm.nih.gov/PMC5856448 |
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