Poster Open Access

Enzymatic degradation of a commercial bio-based polyester and evaluation of the mechanism involved

Romano Angela; Rosato Antonella; Totaro Grazia; Celli Annamaria; Zanaroli Giulio; Sisti Laura


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{
  "inLanguage": {
    "alternateName": "eng", 
    "@type": "Language", 
    "name": "English"
  }, 
  "description": "<p>Aliphatic polyesters are the most promising biodegradable plastics because of their high susceptibility to the attack of hydrolytic<br>\nenzymes and of many microorganisms naturally occurring in the environment. Poly(butylene succinate-<em>co</em>-adipate) (PBSA) is a biobased semicrystalline copolymer of poly(butylene succinate) (PBS), with adipic acid as co-monomer. It is highly biodegradable<br>\nbecause of its lower crystallinity and higher flexibility of polymer chains compared to PBS. In the present study, the&nbsp;biodegradability mechanism of PBSA was evaluated using cutinase from <em>Humicola insolens</em>, which is a commercial hydrolytic enzyme presenting both lipase and esterase features. The polyester&nbsp;degradation is based on weight loss measurements&nbsp;combined to other analyses (i.e., GPC, <sup>1</sup>H NMR, and DSC) performed on the residual solids of PBSA&nbsp;films, in order to understand the molecular and chemical modifications induced at the surface and/or in the bulk of polymer materials over time. The results showed that the enzymatic degradation mechanism of cutinase proceed&nbsp;by degrading the polymer from the surface of the film. An exo-type cleaving action mode was proposed based on the identification of the oligomers and monomers released as degradation products.</p>", 
  "license": "https://creativecommons.org/licenses/by/4.0/legalcode", 
  "creator": [
    {
      "affiliation": "University of Bologna", 
      "@id": "https://orcid.org/0000-0002-9479-7844", 
      "@type": "Person", 
      "name": "Romano Angela"
    }, 
    {
      "affiliation": "University of Bologna", 
      "@type": "Person", 
      "name": "Rosato Antonella"
    }, 
    {
      "affiliation": "University of Bologna", 
      "@id": "https://orcid.org/0000-0002-7388-8894", 
      "@type": "Person", 
      "name": "Totaro Grazia"
    }, 
    {
      "affiliation": "University of Bologna", 
      "@id": "https://orcid.org/0000-0002-5974-1642", 
      "@type": "Person", 
      "name": "Celli Annamaria"
    }, 
    {
      "affiliation": "University of Bologna", 
      "@id": "https://orcid.org/0000-0001-8015-8665", 
      "@type": "Person", 
      "name": "Zanaroli Giulio"
    }, 
    {
      "affiliation": "University of Bologna", 
      "@id": "https://orcid.org/0000-0003-4445-3880", 
      "@type": "Person", 
      "name": "Sisti Laura"
    }
  ], 
  "url": "https://zenodo.org/record/4327388", 
  "datePublished": "2020-11-30", 
  "@type": "CreativeWork", 
  "@context": "https://schema.org/", 
  "identifier": "https://doi.org/10.5281/zenodo.4327388", 
  "@id": "https://doi.org/10.5281/zenodo.4327388", 
  "workFeatured": {
    "url": "https://www.european-bioplastics.org/events/eubp-conference/", 
    "alternateName": "EUBP", 
    "location": "Remote (digital platform Edition)", 
    "@type": "Event", 
    "name": "15th European Bioplastics Conference"
  }, 
  "name": "Enzymatic degradation of a commercial bio-based polyester and evaluation of the mechanism involved"
}
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