{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T13:17:22Z","timestamp":1772803042920,"version":"3.50.1"},"reference-count":51,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2017,8,11]],"date-time":"2017-08-11T00:00:00Z","timestamp":1502409600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["SFRH\/BD\/75091\/2010"],"award-info":[{"award-number":["SFRH\/BD\/75091\/2010"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["POCI\/01\/0145\/FEDER\/007265"],"award-info":[{"award-number":["POCI\/01\/0145\/FEDER\/007265"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UID\/QUI\/50006\/2013"],"award-info":[{"award-number":["UID\/QUI\/50006\/2013"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Portuguese honeys (n = 15) from different botanical and geographical origins were analysed regarding their quality parameters (diastase activity, hydroxymethylfurfural content, moisture and pH), colour (L*, a*, b*) and antioxidant profile (total phenolics content, total flavonoids content, DPPH\u2022 scavenging activity, and ferric reducing power). The samples were analysed fresh and after 4-years of storage (at 25 \u00b0C and protected from light). The hydroxymethylfurfural content and diastase activity of the fresh samples were in accordance with the recommended values described in the legislation. In general, the antioxidant activity of the samples correlated more with the bioactive compounds content than with colour. The storage affected differently each individual sample, especially regarding the antioxidant profile. Nevertheless, although in general the lightness of the samples decreased (and the redness increased), after 4 years, 11 samples still presented acceptable diastase activity and hydroxymethylfurfural values.<\/jats:p>","DOI":"10.3390\/molecules22081338","type":"journal-article","created":{"date-parts":[[2017,8,11]],"date-time":"2017-08-11T10:07:40Z","timestamp":1502446060000},"page":"1338","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":38,"title":["Portuguese Honeys from Different Geographical and Botanical Origins: A 4-Year Stability Study Regarding Quality Parameters and Antioxidant Activity"],"prefix":"10.3390","volume":"22","author":[{"given":"Sonia","family":"Soares","sequence":"first","affiliation":[{"name":"REQUIMTE, LAQV\/Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"}]},{"given":"Diana","family":"Pinto","sequence":"additional","affiliation":[{"name":"REQUIMTE, LAQV\/Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8803-0041","authenticated-orcid":false,"given":"Francisca","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"REQUIMTE, LAQV\/Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5053-513X","authenticated-orcid":false,"given":"Rita C.","family":"Alves","sequence":"additional","affiliation":[{"name":"REQUIMTE, LAQV\/Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6767-6596","authenticated-orcid":false,"given":"M. Beatriz P.P.","family":"Oliveira","sequence":"additional","affiliation":[{"name":"REQUIMTE, LAQV\/Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2017,8,11]]},"reference":[{"key":"ref_1","unstructured":"Codex Alimentarius Revised Codex Standard for Honey, Food and Agriculture Organization of the United Nations. (no. Codex stan 12\u20131981, rev.1 (1987), rev.2 (2001)."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1007\/s12161-016-0563-x","article-title":"Characterization and discrimination of the floral origin of sidr honey by physicochemical data combined with multivariate analysis","volume":"10","author":"Roshan","year":"2017","journal-title":"Food Anal. 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