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Article

Evaluation of Practical Applicability and Synergistic Effects of Bio-Based Food Packaging Materials Combined with Plant-Based Stabilisers

1
Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, 53359 Rheinbach, Germany
2
Institute of Technology, Resource and Energy-Efficient Engineering (TREE), Bonn-Rhein-Sieg University of Applied Sciences, 53359 Rheinbach, Germany
3
Faculty of Agriculture, University of Bonn, 53115 Bonn, Germany
*
Authors to whom correspondence should be addressed.
Academic Editor: Carl Schaschke
Processes 2021, 9(10), 1838; https://doi.org/10.3390/pr9101838
Received: 23 September 2021 / Revised: 13 October 2021 / Accepted: 14 October 2021 / Published: 15 October 2021
Different analyses and feasibility studies have been conducted on the plant extracts of thyme (Thymus vulgaris), European horse chestnut (Aesculus hippocastanum), Nordmann fir (Abies nordmanniana), and snowdrop (Galanthus elwesii) to evaluate bio-based alternatives to common petrol-based stabilisers. For this purpose, in this study, plant extracts were incorporated into poly-lactic acid films (PLA) at different concentrations. The films’ UV absorbance and migration into packed food was analysed via photometric assays (ABTS radical cation scavenging capacity assay, β-carotene assay) and GC–MS analysis. Furthermore, the synergistic antioxidant effects of various combinations of extracts and isolated active compounds were determined. This way, antioxidant effects can be increased, allowing for a highly effective use of resources. All extracts were successfully incorporated into PLA films and showed notable photoabsorbing effects, while no migration risk was observed. Depending on extract combinations, high synergistic effects of up to 726% can be utilised to improve the effectiveness of bio-based extracts. This applies particularly to tomato paste and Aesculus hippocastanum extracts, which overall show high synergistic and antioxidant effects in combination with each other and with isolated active compounds. The study shows that it is possible to create safe bio-based antioxidant films which show even improved properties when using highlighted target combinations. View Full-Text
Keywords: bio-based; food contact material; migration; stabilisation; additive; synergistic effect; formulation; UV absorbance; antioxidant; photostabiliser bio-based; food contact material; migration; stabilisation; additive; synergistic effect; formulation; UV absorbance; antioxidant; photostabiliser
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MDPI and ACS Style

Havelt, T.; Brettschneider, S.; Schmitz, M. Evaluation of Practical Applicability and Synergistic Effects of Bio-Based Food Packaging Materials Combined with Plant-Based Stabilisers. Processes 2021, 9, 1838. https://doi.org/10.3390/pr9101838

AMA Style

Havelt T, Brettschneider S, Schmitz M. Evaluation of Practical Applicability and Synergistic Effects of Bio-Based Food Packaging Materials Combined with Plant-Based Stabilisers. Processes. 2021; 9(10):1838. https://doi.org/10.3390/pr9101838

Chicago/Turabian Style

Havelt, Thomas, Sarah Brettschneider, and Michaela Schmitz. 2021. "Evaluation of Practical Applicability and Synergistic Effects of Bio-Based Food Packaging Materials Combined with Plant-Based Stabilisers" Processes 9, no. 10: 1838. https://doi.org/10.3390/pr9101838

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