{
  "abstract": "Active poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) nanofiber membranes incorporating antioxidant extracted coffee oil (ECO) from spent coffee grounds were prepared by electrospinning. GC-MS analysis revealed similar proportions of saturated and unsaturated fatty acids, predominantly linoleic (37%) and palmitic (35%) acids, followed by oleic/elaidic (9%) and stearic (8%) acids. ECO exhibited antioxidant activity in DPPH and ABTS assays (82 and 51 μmol Trolox equivalents, respectively), with a total phenolic content of 22 mg gallic acid equivalents per gram. Single-needle electrospinning produced membranes containing 8–30 wt% ECO, while coaxial electrospinning of an ECO core and PHBV shell yielded membranes containing 15 wt% ECO. Thermal, morphological, surface, mechanical, and antioxidant properties were investigated. Single-needle electrospinning produced continuous, bead-free nanofibers, whereas TEM observations suggested a core–shell structure in coaxial fibers. ECO incorporation increased fiber diameter (465–586 nm for single-needle and 542–619 nm for coaxial fibers), promoted fiber junctions and surface wettability, and significantly improved mechanical strength, particularly at the highest ECO loading. All ECO-loaded membranes showed radical scavenging activity, with coaxially electrospun membranes exhibiting DPPH inhibition (44%) comparable to that of single-needle membranes containing twice the ECO loading. These findings support the potential of ECO-loaded PHBV nanofibers as active membranes.",
  "abstract_shown": true,
  "affiliations": [
    "“Materials + Technologies” Group (GMT), Department of Chemical and Environmental Engineering, Faculty of Engineering of Gipuzkoa, University of the Basque Country (UPV/EHU), 20018 Donostia-San Sebastián, Spain",
    "Macrobehavior-Mesostructure-Nanotechnology, General Research Service (SGIker), Faculty of Engineering of Gipuzkoa (GIE), University of the Basque Country, Plaza Europa 1, 20018 Donostia-San Sebastián, Spain"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Laura Vignau Arsuaga",
      "orcid": "0000-0003-2082-5731"
    },
    {
      "affs": [
        0
      ],
      "name": "Aloña Retegi"
    },
    {
      "affs": [
        0
      ],
      "name": "Irati Berasarte",
      "orcid": "0000-0002-9235-8477"
    },
    {
      "affs": [
        1
      ],
      "name": "Loli Martin",
      "orcid": "0000-0003-3756-4582"
    },
    {
      "affs": [
        0
      ],
      "name": "Arantxa Eceiza",
      "orcid": "0000-0001-6471-9215"
    },
    {
      "affs": [
        0
      ],
      "name": "Nagore Gabilondo",
      "orcid": "0000-0003-1684-0074"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9q102atb974fg.bib",
  "cited_by": 0,
  "doi": "10.3390/polym18212780",
  "fulltext_url": null,
  "id": "9q102atb974fg",
  "issns": [
    "2073-4360"
  ],
  "landing_url": "https://www.mdpi.com/2073-4360/18/21/2780",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [],
  "openalex": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-07",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/9q102atb974fg.ris",
  "sources": [
    {
      "first_seen": "2026-11-10T00:21:22Z",
      "native_id": "10.3390/polym18212780",
      "source": "crossref",
      "url": "https://www.mdpi.com/2073-4360/18/21/2780"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2073-4360",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Active Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Electrospun Membranes Incorporating Antioxidant Oil from Spent Coffee Grounds",
  "title_text": "Active Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Electrospun Membranes Incorporating Antioxidant Oil from Spent Coffee Grounds",
  "type": "peer-reviewed",
  "updated_at": "2026-11-10T00:21:22Z",
  "url": "https://research.draconitic.com/paper/9q102atb974fg",
  "venue": "Polymers",
  "versions": []
}