{
  "abstract": "Chitosan films are promising materials for food-related applications, but their performance depends on polymer characteristics. This study compared films from hybrid chemical–microbiological shrimp (CM-Shr) and crab (CM-Crb) chitosans, chemically extracted crab chitosan (Ch-Crb), and high- (Ref-H) and low-molecular-weight (Ref-L) reference chitosans. Films were prepared using 1.5% (w/v) chitosan in 1% (v/v) acetic acid with glycerol at 30% (w/w, relative to dry chitosan). Chitosans were characterized by degree of deacetylation, molecular weight, moisture, ash, nitrogen and ATR-FTIR; films were assessed for thermal, morphological, hydration, mechanical, optical, and antibacterial properties. ATR-FTIR indicated differences in amino, residual N-acetyl, and hydrogen-bonded environments. At 15 min, CM-Crb and Ch-Crb exhibited lower apparent water absorption (34.5 ± 1.2% and 32.6 ± 0.7%) than Ref-H (51.8 ± 1.9%). Antibacterial inhibition beyond the 6 mm film-disk diameter was absent at 1.5% and predominantly detected for CM-Crb and Ch-Crb at 3.0–4.5% (w/v) chitosan in the film-forming solutions. CM-Crb exhibited tensile strength of 52.1 ± 4.3 MPa, the highest elongation at break (3.7 ± 0.3%) and UV blocking at 340 nm (35%). Film performance was associated with the physicochemical profiles and processing history of the starting chitosans.",
  "abstract_shown": true,
  "affiliations": [
    "Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Unidad Sinaloa, Instituto Politécnico Nacional, Guasave 81100, Mexico",
    "Centro de Desarrollo de Productos Bióticos, Instituto Politécnico Nacional, Yautepec de Zaragoza 62731, Mexico",
    "Centro Interdisciplinario de Investigaciones y Estudios Sobre Medio Ambiente y Desarrollo, Instituto Politécnico Nacional, Ciudad de México 07340, Mexico",
    "Centro de Investigación en Alimentación y Desarrollo, Hermosillo 83304, Mexico",
    "Centro de Investigación en Materiales Avanzados, Chihuahua 31136, Mexico"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Mónica Alejandra Carrazco-Rivera"
    },
    {
      "affs": [
        1
      ],
      "name": "Laura Leticia Barrera-Necha"
    },
    {
      "affs": [
        1
      ],
      "name": "José Luis Trejo-Espino",
      "orcid": "0000-0002-5885-360X"
    },
    {
      "affs": [
        2
      ],
      "name": "Pedro Lina-Manjarrez"
    },
    {
      "affs": [
        3
      ],
      "name": "Jaime Lizardi-Mendoza",
      "orcid": "0000-0003-4636-4371"
    },
    {
      "affs": [
        3
      ],
      "name": "Karla Guadalupe Martínez-Robinson",
      "orcid": "0000-0003-0233-7988"
    },
    {
      "affs": [
        4
      ],
      "name": "Victor Manuel Orozco-Carmona",
      "orcid": "0000-0002-7331-8023"
    },
    {
      "affs": [
        0
      ],
      "name": "José Luis Acosta-Rodríguez",
      "orcid": "0000-0002-7009-0465"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7behg98zwxs53.bib",
  "cited_by": 0,
  "doi": "10.3390/polym18212761",
  "fulltext_url": null,
  "id": "7behg98zwxs53",
  "issns": [
    "2073-4360"
  ],
  "landing_url": "https://www.mdpi.com/2073-4360/18/21/2761",
  "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": "2026-11-06",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/7behg98zwxs53.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T12:21:03Z",
      "native_id": "10.3390/polym18212761",
      "source": "crossref",
      "url": "https://www.mdpi.com/2073-4360/18/21/2761"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2073-4360",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Bioactive Chitosan Films from Shrimp and Crab Shells: Physicochemical and Functional Properties Associated with Biological Source and Processing History",
  "title_text": "Bioactive Chitosan Films from Shrimp and Crab Shells: Physicochemical and Functional Properties Associated with Biological Source and Processing History",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T00:22:01Z",
  "url": "https://research.draconitic.com/paper/7behg98zwxs53",
  "venue": "Polymers",
  "versions": []
}