Bajić, M;
Oberlintner, A;
Kõrge, K;
Likozar, B;
Novak, U;
(2020)
Formulation of active food packaging by design: Linking composition of the film-forming solution to properties of the chitosan-based film by response surface methodology (RSM) modelling.
International Journal of Biological Macromolecules
, 160
pp. 971-978.
10.1016/j.ijbiomac.2020.05.186.
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Abstract
An active chitosan-based film, blended with the hydrolysable tannin-rich extract obtained from fibrous chestnut wood (Castanea sativa Mill.), underwent a simultaneous engineering optimization in terms of measured moisture content (MC), tensile strength (TS), elongation at break (EB), and total phenolic content (TPC). The optimal product formulation for a homogeneous film-forming solution was sought by designing an empirical Box–Behnken model simulation, based on three independent variables: the concentrations of chitosan (1.5–2.0% (w/v)), extracted powder-form chestnut extract (0.5–1.0% (w/v)) and plasticizer glycerol (30.0–90.0% (w/w); determined per mass of polysaccharide). Obtained linear (MC), quadratic (TS or EB), and two-factor interaction (TPC) sets were found to be significant (p < 0.05), to fit well with characteristic experimental data (0.969 < R2 < 0.992), and could be considered predictive. Although all system parameters were influential, the level of polyol played a vital continuous role in defining EB, MC and TS, while the variation of the chestnut extract caused an expected connected change in affecting TPC. The component relationship formula of chemical mixture fractions (1.93% (w/v) of chitosan, 0.97% (w/v) chestnut extract and 30.0% (w/w) of glycerol) yielded the final applicable material of adequate physico-mechanical properties (MC = 17.0%, TS = 16.7 MPa, EB = 10.4%, and TPC = 19.4 mgGAE gfilm−1). Further statistical validation of the concept revealed a sufficient specific accuracy with the computed maximal absolute residual error up to 22.2%. Herein-proposed design methodology can thus be translated to smart packaging fabrication generally.
| Type: | Article |
|---|---|
| Title: | Formulation of active food packaging by design: Linking composition of the film-forming solution to properties of the chitosan-based film by response surface methodology (RSM) modelling |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.ijbiomac.2020.05.186 |
| Publisher version: | https://doi.org/10.1016/j.ijbiomac.2020.05.186 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Active chitosan-based film, Chestnut wood extract, Box–Behnken experimental design methodology, Bio-based film-forming solution, Physico-mechanical properties, Simultaneous model-based optimization |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Biochemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10098771 |
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