• Media type: E-Article
  • Title: Sustainable biorefining and bioprocessing of green seaweed (Ulva spp.) for the production of edible (ulvan) and non-edible (polyhydroxyalkanoate) biopolymeric films
  • Contributor: Manikandan, N. Arul; Lens, Piet N. L.
  • imprint: Springer Science and Business Media LLC, 2023
  • Published in: Microbial Cell Factories
  • Language: English
  • DOI: 10.1186/s12934-023-02154-7
  • ISSN: 1475-2859
  • Keywords: Applied Microbiology and Biotechnology ; Bioengineering ; Biotechnology
  • Origination:
  • Footnote:
  • Description: <jats:title>Abstract</jats:title><jats:p>A sustainable biorefining and bioprocessing strategy was developed to produce edible-ulvan films and non-edible polyhydroxybutyrate films. The preparation of edible-ulvan films by crosslinking and plasticisation of ulvan with citric acid and xylitol was investigated using Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC) analysis. The edible ulvan film was tested for its gut-friendliness using <jats:italic>Lactobacillus</jats:italic> and <jats:italic>Bifidobacterium</jats:italic> spp. (yoghurt) and was shown to improve these gut-friendly microbiome's growth and simultaneously retarding the activity of pathogens like <jats:italic>Escherchia coli</jats:italic> and <jats:italic>Staphylococcus aureus</jats:italic>. Green macroalgal biomass refused after the extraction of ulvan was biologically processed by dark fermentation to produce a maximum of 3.48 (± 0.14) g/L of volatile fatty acids (VFAs). Aerobic processing of these VFAs using <jats:italic>Cupriavidus necator</jats:italic> cells produced 1.59 (± 0.12) g/L of biomass with 18.2 wt% polyhydroxybutyrate. The present study demonstrated the possibility of producing edible and non-edible packaging films using green macroalgal biomass as the sustainable feedstock.</jats:p> <jats:p><jats:bold>Graphical Abstract</jats:bold></jats:p>
  • Access State: Open Access