{
  "abstract": "In the context of increasing plastic pollution, the potential widespread use of biodegradable packaging requires clarification of the little-studied impact of material loading ratios on biodegradation performance in home-composting environments. The biodegradability of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and PHBV/cellulose composite, either shredded or as whole thin films, was studied for up to 12 months under home-composting conditions using EN NF ISO 14855-1 respirometry protocols. The material-to-compost ratios tested were 1/3, 1/30, and 1/50, simulating 100%, 10% and 6% food packaging substitution by the tested biodegradable materials, respectively. Regardless of material nature and form, a high loading ratio of 1/3 (100% substitution) decreased the biodegradation rate by up to tenfold compared to a loading ratio of 1/50. Such high loading ratios create inhibitory conditions that can overshadow the increased surface area gained through grinding. Meanwhile, at low loading ratios (1/50 and 1/30), film grinding increases biodegradation rates by up to 3.2-fold for all materials. The ultimate biodegradation of shredded materials significantly exceeds 100%, reaching up to 131% for PHBV powdered film at a loading ratio of 1/30. This suggests an 'overactivation' (or priming) effect of the inoculum induced by the materials, leading to CO 2 overproduction that does not derive directly from material biodegradation. This priming effect appears limited by dilution effect at the low 1/50 loading ratio and by substrate inhibition at the high 1/3 loading ratio.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "name": "Héloïse Bazart"
    },
    {
      "name": "Valérie Guillard"
    },
    {
      "name": "Nathalie Gontard"
    },
    {
      "name": "Lucile Chatellard"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cvg6sv9s3b0pd.bib",
  "cited_by": 2,
  "doi": "10.1016/j.rinma.2026.100908",
  "fulltext_url": null,
  "id": "cvg6sv9s3b0pd",
  "issns": [
    "2590-048X"
  ],
  "landing_url": "https://hal.science/hal-05775293v1",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.sde"
    ],
    [
      "hal",
      "0.sdv"
    ],
    [
      "openalex",
      "2502|biodegradable polymer synthesis and properties"
    ]
  ],
  "openalex": "W7128542072",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-02",
  "publisher": "Elsevier B.V.",
  "ris": "https://research.draconitic.com/paper/cvg6sv9s3b0pd.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:46Z",
      "native_id": "hal-05775293",
      "source": "hal",
      "url": "https://hal.science/hal-05775293v1"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "hal:0.sdv",
      "subfield": "general"
    },
    {
      "field": "earth",
      "origin": "hal:0.sde",
      "subfield": "environmental-science"
    }
  ],
  "title": "Material-to-compost ratio is key for biodegradation of microbial polyester-based composite in home-composting conditions",
  "title_text": "Material-to-compost ratio is key for biodegradation of microbial polyester-based composite in home-composting conditions",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:46Z",
  "url": "https://research.draconitic.com/paper/cvg6sv9s3b0pd",
  "venue": "Results in Materials",
  "versions": []
}