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A classification system to assist compilers in the evaluation of digestion methods for the determination of mineral contents in pseudocereals

2019-10Conference object Restricted access
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dc.contributor.authorNascimento, Ana
dc.contributor.authorMotta, Carla
dc.contributor.authorSantos, Mariana
dc.contributor.authorSantiago, Susana
dc.contributor.authorRego, Andreia
dc.contributor.authorDelgado, Inês
dc.contributor.authorMatos, Ana
dc.contributor.authorNamorado, Sónia
dc.contributor.authorCastanheira, Isabel
dc.date.accessioned2020-05-18T15:56:42Z
dc.date.available2020-05-18T15:56:42Z
dc.date.issued2019-10
dc.description.abstractPlant based diet pseudocereals, as quinoa, amaranth and buckwheat, are a rich source of minerals that gained increasing attention of scientific community, especially due to their high nutritional value and health benefits. A rigorous analytical determination is necessary to guarantee an estimation of dietary intake as close as possible of real mineral intake. Reliable food composition data is a crucial tool to avoid incorrect estimation of mineral deficiency. Previously to analysis, a sample decomposition is required, which, can be undertaken by different digestion methods. The destruction of organic matter is a slow step of the overall analytical process mostly dependent on the content of significant components. Although due to the lack of certified reference materials for pseudocereals analysis, little information is available to assist compilers and analysts in selecting or comparing the adequacy of digestion method for mineral determination. This work aimed to identify the suitable digestion method for accurate determination of Cu, Mn, Fe, Zn, Mg, P, Ca, K and Na in pseudocereals assessing in terms of accuracy and precision framed by a quality system. Analysis, were performed according with ISO 17025. Mineral levels obtained, by ICP-OES, with the three procedures were compared. The adequacy of digestion methods to assist instrumental analysis on determination of mineral contents was score based on three categories of method performance: limit of detection, uncertainty and statistical comparability test. A classification system was rated based on method performance: the digestion method was rejected if results failed in two categories, classified as “use with caution” if results were not satisfactory in one category or accepted if the results passed in all the categories. All the methods were adequate for the determination of Mg and P. It was possible to obtain comparable results, with caution, from all digestion methods. This classification system is a useful and pioneer effort to assist compilers and analysts to scrutinize pseudocerals mineral analysis.pt_PT
dc.description.versionN/Apt_PT
dc.identifier.urihttp://hdl.handle.net/10400.18/6684
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectDigestion Methodspt_PT
dc.subjectDry-ashingpt_PT
dc.subjectGraphite Block Acid Digestionpt_PT
dc.subjectMineral Contentspt_PT
dc.subjectPseudocerealspt_PT
dc.subjectSegurança Alimentarpt_PT
dc.subjectComposição dos Alimentospt_PT
dc.titleA classification system to assist compilers in the evaluation of digestion methods for the determination of mineral contents in pseudocerealspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceLisboa, Portugalpt_PT
oaire.citation.title13th International Food Data Conference (IFDC 2019), International Network of Food Data Systems, 5-18 outubro 2019pt_PT
rcaap.rightsclosedAccesspt_PT
rcaap.typeconferenceObjectpt_PT

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