{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,13]],"date-time":"2026-01-13T00:41:03Z","timestamp":1768264863078,"version":"3.49.0"},"reference-count":74,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2022,1,26]],"date-time":"2022-01-26T00:00:00Z","timestamp":1643155200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Coatings"],"abstract":"<jats:p>Non-biodegradable plastic is one of the biggest environmental problems of our lifetime and, considering the present societal needs, it will get worse. Consequently, there is an urgent need to develop sustainable and renewable alternatives to plastic, such as plastic-like materials obtained from biodegradable polymers, namely sulfated polysaccharides, considered one of the most viable alternatives. There is also a need to obtain these materials in an environmentally and economically sustainable way. The hereby developed process of obtaining film-forming solutions from semi-refined porphyran (PorphSR) uses a green solvent (hot water) with a high extraction yield of semi-refined porphyran (26.66 \u00b1 0.27%) in a reproducible way and with low levels of contaminants. The obtained semi-refined porphyran showed good antioxidant potential in all tests performed: HPSA (\u03940.066 \u00b1 0.002), DPPH (2.23 \u00b1 0.78%), FRAP (0.420 \u00b1 0.014 eq. ascorbic acid \u00b5g mg\u22121 of extract) and ABTS (20.46 \u00b1 0.90%). After being cast into films, the most notable antioxidant properties were those of the semi-refined porphyran in the DPPH, FRAP and ABTS assays and of the pectin, (PorphSR_PcT and PorphSR_PcT_Gly) in the HPSA assay. Morphologically, the films showed relatively homogeneous and low roughness surfaces. It is concluded that the described method to obtain semi-refined porphyran is feasible and reproducible, and that the developed films, mainly PorfP2_PcT_Gly, proved to be a potential candidate for non-biodegradable plastic substitutes.<\/jats:p>","DOI":"10.3390\/coatings12020148","type":"journal-article","created":{"date-parts":[[2022,1,26]],"date-time":"2022-01-26T11:02:53Z","timestamp":1643194973000},"page":"148","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Development and Characterization of Films for Food Application Incorporating Porphyran Extracted from Porphyra dioica"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5601-9849","authenticated-orcid":false,"given":"Marco","family":"Teles","sequence":"first","affiliation":[{"name":"MARE, School of Tourism and Maritime Technology, Polytechnic of Leiria, 2520-641 Peniche, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7216-0260","authenticated-orcid":false,"given":"Pedro","family":"Ad\u00e3o","sequence":"additional","affiliation":[{"name":"MARE, Polytechnic of Leiria, 2520-641 Peniche, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4167-5237","authenticated-orcid":false,"given":"Cl\u00e9lia","family":"Afonso","sequence":"additional","affiliation":[{"name":"MARE, School of Tourism and Maritime Technology, Polytechnic of Leiria, 2520-641 Peniche, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7775-0614","authenticated-orcid":false,"given":"Raul","family":"Bernardino","sequence":"additional","affiliation":[{"name":"MARE, School of Tourism and Maritime Technology, Polytechnic of Leiria, 2520-641 Peniche, Portugal"},{"name":"Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials (LSRE-LCM), School of Tourism and Maritime Technology, (ESTM), Polytechnic of Leiria, 2411-901 Leiria, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2552-8437","authenticated-orcid":false,"given":"Mafalda","family":"Guedes","sequence":"additional","affiliation":[{"name":"CDP2T, Set\u00fabal School of Technology, Polytechnic of Set\u00fabal, 2910-761 Set\u00fabal, Portugal"},{"name":"CEFEMA, Instituto Superior T\u00e9cnico, ULisboa, Av. Rovisco Pais 1, 1000-001 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5955-8418","authenticated-orcid":false,"given":"Ricardo","family":"Baptista","sequence":"additional","affiliation":[{"name":"CDP2T, Set\u00fabal School of Technology, Polytechnic of Set\u00fabal, 2910-761 Set\u00fabal, Portugal"},{"name":"IDMEC, Instituto Superior T\u00e9cnico, ULisboa, Av. 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