Martina Čagalj (Avtor), Lidija Fras Zemljič (Avtor), Tjaša Kraševac Glaser (Avtor), Eva Mežnar (Avtor), Meta Sterniša (Avtor), Sonja Smole Možina (Avtor), María del Carmen Razola-Díaz (Avtor), Vida Šimat (Avtor)

Povzetek

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 µmole Trolox equivalent (TE)/L, DPPH of 52.51 ± 2.81% inhibition, and ORAC of 76.45 ± 1.47 µmole 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.

Ključne besede

pakiranje živil;aktivna embalaža;hitozan;PLA;antioksidanti;izvlečki iz alg;functional PLA films;seaweed and chitosan bilayer;sustainable natural antioxidants;microwave-assisted extraction;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL BF - Biotehniška fakulteta
Založnik: MDPI AG
UDK: 621.798.1:547.9:664.0
COBISS: 131728131 Povezava se bo odprla v novem oknu
ISSN: 2304-8158
Št. ogledov: 430
Št. prenosov: 1445
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: pakiranje živil;aktivna embalaža;hitozan;PLA;antioksidanti;izvlečki iz alg;
Vrsta dela (COBISS): Znanstveno delo
Strani: str. 1-18, art. 3847
Letnik: ǂVol. ǂ11
Zvezek: ǂiss. ǂ23
Čas izdaje: 2022
DOI: 10.3390/foods11233847
ID: 19837831