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Amino acid contents and toxically relevant arsenic of rice varieties consumed in Portugal

2018-01Journal article Restricted access
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dc.contributor.authorRego, Andreia
dc.contributor.authorMota, Carla
dc.contributor.authorGueifão, Sandra
dc.contributor.authorVentura, Marta
dc.contributor.authorDelgado, Inês
dc.contributor.authorLopes, Joel
dc.contributor.authorMatos, Ana
dc.contributor.authorCastanheira, Isabel
dc.date.accessioned2019-02-27T15:59:22Z
dc.date.available2019-02-27T15:59:22Z
dc.date.issued2018-01
dc.description.abstractThis study evaluated amino acids, antioxidant capacity, and arsenic species present in Indica and Japonica rice cultivars (Oryza sativa L.) grown in similar regions, as well as brown rice. Essential amino acids in brown rice exhibited a greater abundance when compared to white rice. Lysine was the only essential amino acid with higher concentration in white rice than in brown rice. Results showed antioxidant activity of 0.46 IC50 (mg mL 1) and TPC 0.11 mg eq. GA/g of sample. Total arsenic content in rice samples was about 200 mg/kg. HPLC-ICP-MS determinations revealed iAs as the predominant species in bran samples. Through Spearman’s correlation, negative correlations between six amino acids and total arsenic content in japonica white rice were observed. Sulphur amino acid cysteine presented the highest negative correlation (q = 0.758, p-value = 0.011). Based on our results, a regular benefit-risk assessment for rice products to enhance the consumption choice is recommended.pt_PT
dc.description.abstractHighlights: Brown rice shows a higher content of AA than white rice; iAs species are predominant in bran samples; Correlations were found between AA and As.pt_PT
dc.description.sponsorshipThe scientific work was funded by the Portuguese Fundação para a Ciência e a Tecnologia (FCT) under the scope of the strategic project UID/EMS/00667/2013. The analytical work has been financially supported by the SUDOE Interreg IV B Programme through the ORQUE SUDOE project (Ref. SOE3/P2/F591/5).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMeasurement. 2018 Jan;113:189-195. Doi:10.1016/j.measurement.2017.03.025pt_PT
dc.identifier.doi10.1016/j.measurement.2017.03.025pt_PT
dc.identifier.issn0263-2241
dc.identifier.urihttp://hdl.handle.net/10400.18/5976
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier/ International Measurement Confederation (IMEKO)pt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.measurement.2017.03.025pt_PT
dc.subjectRicept_PT
dc.subjectArsenic Speciationpt_PT
dc.subjectAmino Acidspt_PT
dc.subjectAntioxidant Capacitypt_PT
dc.subjectSegurança Alimentarpt_PT
dc.subjectComposição dos Alimentospt_PT
dc.titleAmino acid contents and toxically relevant arsenic of rice varieties consumed in Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEMS%2F00667%2F2013/PT
oaire.citation.endPage195pt_PT
oaire.citation.startPage189pt_PT
oaire.citation.titleMeasurementpt_PT
oaire.citation.volume113pt_PT
oaire.fundingStream5876
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsembargoedAccesspt_PT
rcaap.typearticlept_PT
relation.isProjectOfPublicationb95e3d98-b446-49b7-9c1b-c571be87f8c1
relation.isProjectOfPublication.latestForDiscoveryb95e3d98-b446-49b7-9c1b-c571be87f8c1

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