{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,17]],"date-time":"2026-02-17T12:56:46Z","timestamp":1771333006016,"version":"3.50.1"},"reference-count":54,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2020,7,8]],"date-time":"2020-07-08T00:00:00Z","timestamp":1594166400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Plants"],"abstract":"<jats:p>The increasing demand of organic agriculture (OA) is based on the consumer\u2019s belief that organic agricultural products are healthier, tastier and more nutritious. The effect of OA and conventional agriculture (CA) methods on the elemental compositions of green and red sweet peppers were studied. The highest concentrations of Ca, Cu, K and P occur in peppers from OA in both states of ripeness, with emphasis on Ca and K contents. Furthermore, the principal component analysis (PCA), points out to a clear separation, regarding concentrations, between peppers from OA and CA. The average fruit weight is higher in OA, 141 g versus 112 g in CA. Regarding productivity, CA reaches a value of 30.1 t\/ha, 7% higher than the value observed for OA, i.e., 28 t\/ha. Peppers from CA, exhibited greater protein content than those which originated from OA, regardless of the ripening stage, but not more ashes. Regarding nutritional ratios, the ripening stage and the production mode, can be important for an adequate choice regarding a more balanced Ca\/P ratio, and the studied variety contained high Ca values ranging between 1009 and 1930 mg.kg\u22121. The PCA analysis also revealed that Mn and Fe are inversely correlated, confirming the importance of the Mn\/Fe ratio evaluation in nutritional studies.<\/jats:p>","DOI":"10.3390\/plants9070863","type":"journal-article","created":{"date-parts":[[2020,7,10]],"date-time":"2020-07-10T09:45:31Z","timestamp":1594374331000},"page":"863","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Elemental Composition and Some Nutritional Parameters of Sweet Pepper from Organic and Conventional Agriculture"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1174-4959","authenticated-orcid":false,"given":"Rosa","family":"Guilherme","sequence":"first","affiliation":[{"name":"CERNAS\u2014Centro de Estudos de Recursos Naturais, Ambiente e Sociedade, Escola Superior Agr\u00e1ria de Coimbra, Instituto Polit\u00e9cnico de Coimbra, Bencanta, 3045-601 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3906-4349","authenticated-orcid":false,"given":"Fernando","family":"Reboredo","sequence":"additional","affiliation":[{"name":"GeoBioTec, Departamento de Ci\u00eancias da Terra, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6286-4048","authenticated-orcid":false,"given":"Mauro","family":"Guerra","sequence":"additional","affiliation":[{"name":"LIBPHYS, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1596-8722","authenticated-orcid":false,"given":"Sandrine","family":"Ressurrei\u00e7\u00e3o","sequence":"additional","affiliation":[{"name":"CERNAS\u2014Centro de Estudos de Recursos Naturais, Ambiente e Sociedade, Escola Superior Agr\u00e1ria de Coimbra, Instituto Polit\u00e9cnico de Coimbra, Bencanta, 3045-601 Coimbra, Portugal"}]},{"given":"Nuno","family":"Alvarenga","sequence":"additional","affiliation":[{"name":"GeoBioTec, Departamento de Ci\u00eancias da Terra, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal"},{"name":"Instituto Nacional de Investiga\u00e7\u00e3o Agr\u00e1ria e Veterin\u00e1ria, I.P., UTI\u2014Unidade de Tecnologia e Inova\u00e7\u00e3o. Avenida da Rep\u00fablica, Quinta do Marqu\u00eas, 2780-157 Oeiras, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2020,7,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"4641","DOI":"10.1038\/s41467-019-12622-7","article-title":"The greenhouse gas impacts of converting food production in England and Wales to organic methods","volume":"10","author":"Smith","year":"2019","journal-title":"Nat. Commun."},{"key":"ref_2","unstructured":"Willer, H., and Lernoud, J. (2019). The World of Organic Agriculture. Statistics and Emerging Trends 2019, Research Institute of Organic Agriculture (FiBL), Frick and IFOAM\u2014Organics International. Available online: www.organicworld.net\/yearbook\/yearbook-2019.html."},{"key":"ref_3","first-page":"20141396","article-title":"Diversification practices reduce organic to conventional yield gap","volume":"282","author":"Ponisio","year":"2015","journal-title":"Proc. R. Soc. Lond. B Biol. 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