@misc{10481/79031,
year = {2022},
month = {11},
url = {https://hdl.handle.net/10481/79031},
abstract = {Seaweeds are a potentially sustainable source of natural antioxidants that can be used in
the food industry and possibly for the development of new sustainable packaging materials with the
ability to extend the shelf-life of foods and reduce oxidation. With this in mind, the seasonal variations
in the chemical composition and antioxidant activity of brown seaweed (Padina pavonica) extracts were
investigated. The highest total phenolic content (TPC) and antioxidant activity (measured by ferric
reducing/antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging,
and oxygen radical absorbance capacity (ORAC)) were found for P. pavonica June extract. The
TPC of 26.69   1.86 mg gallic acid equivalent/g, FRAP of 352.82   15.41  mole Trolox equivalent
(TE)/L, DPPH of 52.51   2.81% inhibition, and ORAC of 76.45   1.47  mole TE/L were detected.
Therefore, this extract was chosen for the development of bioactive PLA bilayer film, along with
chitosan. Primary or quaternary chitosan was used as the first layer on polylactic acid (PLA) films.
A suspension of chitosan particles with entrapped P. pavonica extract was used as the second layer.
X-ray photoelectron spectroscopy confirmed the presence of layers on the material surface. The
highest recorded antioxidant activity of the newly developed films was 63.82% inhibition. The
developed functional films exhibited antifogging and antioxidant properties, showing the potential
for application in the food industry.},
organization = {PRIMA program under project BioProMedFood	1467},
organization = {European Commission},
publisher = {MDPI},
keywords = {Functional PLA films},
keywords = {Seaweed and chitosan bilayer},
keywords = {Sustainable natural antioxidants},
keywords = {Microwave-assisted extraction},
title = {Seasonal Changes in Chemical Profile and Antioxidant Activity of Padina pavonica Extracts and Their Application in the Development of Bioactive Chitosan/PLA Bilayer Film},
doi = {10.3390/foods11233847},
author = {Cagalj, Martina and Razola Díaz, María del Carmen},
}