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´Rocha’ pear antioxidant and mineral characterization

2017-10Conference object Restricted access
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dc.contributor.authorCoelho, Inês
dc.contributor.authorRego, Andreia
dc.contributor.authorTeixeira, Rita
dc.contributor.authorNascimento, Ana
dc.contributor.authorBordado, João
dc.contributor.authorSantos, Rui
dc.contributor.authorCastanheira, Isabel
dc.date.accessioned2018-02-22T15:28:31Z
dc.date.available2018-02-22T15:28:31Z
dc.date.issued2017-10
dc.description.abstractIntroduction: ‘Rocha’ pear (Pyrus communis L.) is a Portuguese native variety with a Protected Designation of Origin (PDO). This variety is responsible for 95% of the national pear production and represents an important economic activity1 with exportations over 67 million Euros per year2. Pears are very nutritive fruits, rich in micronutrients, antioxidants and other important nutrients. Its nutritional value has been widely studied. However, in comparison to other European pears like Bartllet and Red Anjou, whose nutritional value is well known and published in reference databases, ‘Rocha’ pear’s nutritional quality has been less studied. Objectives and methodology: The objective of this study was to evaluate an antioxidant and mineral characterization of ‘Rocha’ pear. Antioxidant capacity was characterized by testing the elimination of free radicals DPPH (2,2-diphenyl-1-picrylhydrazyl) and by the Folin-Ciocalteau method. Minerals and trace elements were quantified by ICP-MS and ICP-OES after a graphite heating block (digiprep) digestion. Elements analyzed were Cr, Mn, Co, Cu, Se, Sr, Mo, Sn, Zn, Fe, Mg, P, K, Ca and Na. ‘Rocha’ pear samples were collected from 11 farms in 2 Portuguese regions (Fundão and PDO region). Each laboratory sample was a pool of three pears. One sample was used to study differences between peel and pulp. After the removal of seeds pear samples were freeze-dried and vacuum sealed until analysis. Main findings: The PDO pears have the highest antioxidant capacity, presenting a phenolic content ranging from 0,65 to 0,84 mg eq. Galic acid/ g sample and an IC50 from 0,26 to 0,17 mg/ml. As expected the majority of compounds with antioxidant proprieties are in the peel, with proximally two times more than the pulp. In terms of micronutrients no significant differences were found between the regions under study. The exception is zinc and sodium that presents higher values for the PDO region. Conclusions: In conclusion, it is important to study and to divulge the Portuguese pear in a higher extension, once it will lead to a higher consumption by the population and consequently to a national economic growth.pt_PT
dc.description.sponsorshipThe authors appreciate the financial support of Project PRO-METROFOOD. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant agreement Nº 739568. Andreia Rego acknowledges the financial support from the PhD scholarship funded by the University of Lisbon and the Instituto Superior Técnico.pt_PT
dc.description.versionN/Apt_PT
dc.identifier.urihttp://hdl.handle.net/10400.18/5031
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationProgressing towards the construction of METROFOOD-RI
dc.subjectAntioxidant Capacitypt_PT
dc.subjectICP-MSpt_PT
dc.subjectICP-OESpt_PT
dc.subjectMineralspt_PT
dc.subject‘Rocha’ pearpt_PT
dc.subjectPyrus communis L.pt_PT
dc.subjectPortuguese Fruitpt_PT
dc.subjectComposição dos Alimentospt_PT
dc.title´Rocha’ pear antioxidant and mineral characterizationpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleProgressing towards the construction of METROFOOD-RI
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/739568/EU
oaire.citation.conferencePlaceBuenos Aires, Argentinapt_PT
oaire.citation.title12th International Food Data Conference (IFDC) "From Food Composition to better Policies and Programmes in Nutrition and Agriculture", 11-13 October 2017pt_PT
oaire.fundingStreamH2020
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsclosedAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isProjectOfPublication27905750-7224-4d46-9b63-35b5e2cc834a
relation.isProjectOfPublication.latestForDiscovery27905750-7224-4d46-9b63-35b5e2cc834a

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