Repository logo
 
Publication

Combination of ICP-MS with chemometrics analysis to identify Iodine and Selenium contents in consumed Portuguese foods

2016-08-21Conference object Restricted access
Simple item page
dc.contributor.authorVentura, Marta
dc.contributor.authorGueifão, Sandra
dc.contributor.authorCoelho, Inês
dc.contributor.authorDelgado, Inês
dc.contributor.authorRego, Andreia
dc.contributor.authorCastanheira, Isabel
dc.date.accessioned2017-02-23T12:36:15Z
dc.date.available2017-02-23T12:36:15Z
dc.date.issued2016-08-21
dc.description.abstractSelenium and iodine are micronutrients essential for thyroid hormone synthesis and function. There is also some evidence that low plasma selenium and iodine levels increase the risk of autoimmune thyroid diseases. Plasma levels of these oligoelements are related with dietary intake. Since foods are their main natural sources we investigated iodine and selenium content in foods as consumed collected in Portuguese TDS pilot study as representative of diet in the country. Samples (n=492) were collected according to sampling plan from local markets and analyzed as pooled (n=41) of twelve samples each. The iodine and selenium contents were determined using inductively coupled plasma-mass spectrometry after alkaline (iodine) or acid (selenium) digestion assisted by microwave. To guarantee the accuracy of the laboratory results matrix matching reference materials and successfully participation in proficiency test schemes were chosen as metrological parameters. The analytical results were expressed by the average of three replicates. Cluster analysis and Spearman correlation were applied to evaluate the statistical significance of analytical data. Selenium content ranged from 109±10.85 µg/100g (fresh tuna) to 1.82±0.16 µg/100g (milk with cereals). Iodine values were found from 157±5.8 µg/100g (cockles and clams) to 0.27±0.014 µg/100g (lupine). Cluster analysis classified samples into four main groups on the basis of the iodine and selenium content. Spearman positive correlation (p≤ 0.05) was achieved between iodine and selenium contents. Application of chemometric methods to analytical data is useful to group food samples when iodine/selenium ratio is necessary to suppress iodine deficiency through dietary intake.pt_PT
dc.description.sponsorshipThis work was undertaken within Total Diet Study Exposure (www.tds-exposure.eu), which is funded by the European Commission (Grant Agreement 289108)pt_PT
dc.description.versionN/Apt_PT
dc.identifier.urihttp://hdl.handle.net/10400.18/4365
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherInstituto Nacional de Saúde Doutor Ricardo Jorge, IPpt_PT
dc.relationTotal Diet Study Exposure
dc.subjectIodinept_PT
dc.subjectSeleniumpt_PT
dc.subjectICP-MSpt_PT
dc.subjectConsumed Portuguese Foodspt_PT
dc.subjectComposição dos Alimentospt_PT
dc.subjectPortugalpt_PT
dc.titleCombination of ICP-MS with chemometrics analysis to identify Iodine and Selenium contents in consumed Portuguese foodspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleTotal Diet Study Exposure
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/289108/EU
oaire.citation.conferencePlaceDublin, Irlandapt_PT
oaire.citation.title18th International Union of Food Science and Technology (IUFoST) “Greening the Global Food Supply Chain through Innovation in Food Science and Technology”, 21-25 August 2016pt_PT
oaire.fundingStreamFP7
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsclosedAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isProjectOfPublicationcc652884-f79a-4fc2-8134-0cff92709d45
relation.isProjectOfPublication.latestForDiscoverycc652884-f79a-4fc2-8134-0cff92709d45

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Poster_Combination of ICP-MS with chemometrics analysis to identify.pdf
Size:
1.41 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

DAN - Posters/abstracts em congressos internacionais