{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,8]],"date-time":"2026-04-08T22:40:41Z","timestamp":1775688041034,"version":"3.50.1"},"reference-count":59,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2025,12,27]],"date-time":"2025-12-27T00:00:00Z","timestamp":1766793600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"FCT\u2014Portuguese Foundation for Science and Technology","doi-asserted-by":"publisher","award":["2021.07171.BD"],"award-info":[{"award-number":["2021.07171.BD"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100024791","name":"CITAB","doi-asserted-by":"crossref","award":["UID\/04033\/2025"],"award-info":[{"award-number":["UID\/04033\/2025"]}],"id":[{"id":"10.13039\/501100024791","id-type":"DOI","asserted-by":"crossref"}]},{"name":"CEB","award":["UIDB\/04469\/2020"],"award-info":[{"award-number":["UIDB\/04469\/2020"]}]},{"name":"LABBELS\u2014Associate Laboratory in Biotechnology, Bioengineering, and Microelectromechanical Systems","award":["LA\/P\/0126\/2020"],"award-info":[{"award-number":["LA\/P\/0126\/2020"]}]},{"name":"LABBELS\u2014Associate Laboratory in Biotechnology, Bioengineering, and Microelectromechanical Systems","award":["LA\/P\/0029\/2020"],"award-info":[{"award-number":["LA\/P\/0029\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Plants"],"abstract":"<jats:p>Blueberries are rich in bioactive compounds and antioxidants whose contents can be significantly affected by pre-harvest agronomic practices. Thus, using natural biostimulants like Ecklonia maxima (EM) extract and glycine betaine (GB) is a promising strategy to improve blueberry quality. The effect of foliar pre-harvest application of EM and GB on bioactive compounds and antioxidant capacity (AC) of \u2018Duke\u2019 and \u2018Draper\u2019 blueberries was investigated in 2022 and 2023. Blueberries treated with GB had higher polyphenol contents and AC by the ABTS\u2022+ and CUPRAC methods, particularly at higher doses. Vitamin C in \u2018Duke\u2019 was decreased by both doses of GB and low-dose EM + GB by 10\u201330% over two years, whereas in \u2018Draper\u2019, both doses of GB increased vitamin C in 2023 by 40\u201380%. High GB and EM + GB doses improved the AC of \u2018Duke\u2019 blueberries by 7\u201312% (CUPRAC) in both seasons. In 2022, the high dose of EM increased the levels of polyphenols in both cultivars by 14\u201321% and AC by ABTS\u2022+ and CUPRAC in cv. \u2018Draper\u2019. As a result, blueberries\u2019 nutritional value and AC can be enhanced by biostimulants, whose application must be adjusted according to cultivar and dose to optimize their use.<\/jats:p>","DOI":"10.3390\/plants15010092","type":"journal-article","created":{"date-parts":[[2025,12,29]],"date-time":"2025-12-29T08:47:27Z","timestamp":1766998047000},"page":"92","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Effect of Foliar Biostimulant Application on Bioactive Compounds and Antioxidant Capacity in Blueberry (Vaccinium corymbosum L.)"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3738-9676","authenticated-orcid":false,"given":"Tiago","family":"Lopes","sequence":"first","affiliation":[{"name":"Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"},{"name":"Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production (Inov4Agro), University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"},{"name":"Centre of Biological Engineering (CEB), University of Minho (UM), Campus de Gualtar, 4710-057 Braga, Portugal"},{"name":"LABBELS\u2014Associate Laboratory, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7231-7021","authenticated-orcid":false,"given":"Ana Paula","family":"Silva","sequence":"additional","affiliation":[{"name":"Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"},{"name":"Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production (Inov4Agro), University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"},{"name":"Department of Agronomy, University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6291-8413","authenticated-orcid":false,"given":"Alfredo","family":"Aires","sequence":"additional","affiliation":[{"name":"Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"},{"name":"Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production (Inov4Agro), University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"},{"name":"Department of Agronomy, University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"}]},{"given":"Rosa","family":"Carvalho","sequence":"additional","affiliation":[{"name":"Department of Agronomy, University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"}]},{"given":"Maria","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Department of Agronomy, University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3593-8878","authenticated-orcid":false,"given":"Ant\u00f3nio A.","family":"Vicente","sequence":"additional","affiliation":[{"name":"Centre of Biological Engineering (CEB), University of Minho (UM), Campus de Gualtar, 4710-057 Braga, Portugal"},{"name":"LABBELS\u2014Associate Laboratory, 4710-057 Braga, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5764-024X","authenticated-orcid":false,"given":"Berta","family":"Gon\u00e7alves","sequence":"additional","affiliation":[{"name":"Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"},{"name":"Institute for Innovation, Capacity Building and Sustainability of Agri-Food Production (Inov4Agro), University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"},{"name":"Department of Biology and Environment, University of Tr\u00e1s-os-Montes e Alto Douro (UTAD), 5000-801 Vila Real, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2025,12,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"864","DOI":"10.21273\/HORTSCI.49.7.864","article-title":"Consumer-assisted selection of blueberry fruit quality traits","volume":"49","author":"Gilbert","year":"2014","journal-title":"HortScience"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1080\/10408398.2018.1518895","article-title":"Health-promoting properties of blueberries: A review","volume":"60","author":"Silva","year":"2020","journal-title":"Crit. 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