Detail publikace
Active biodegradable packaging films modified with grape seeds lignin
VOSTREJŠ, P. ADAMCOVÁ, D. VAVERKOVÁ, M. ENEV, V. KALINA, M. MACHOVSKÝ, M. ŠOURKOVÁ, M. MÁROVÁ, I. KOVALČÍK, A.
Originální název
Active biodegradable packaging films modified with grape seeds lignin
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Biodegradable packaging materials represent one possible solution for how to reduce the negative environmental impact of plastics. The main idea of this work was to investigate the possibility of utilizing grape seed lignin for the modification of polyhydroxyalkanoates with the use of its antioxidant capacity in packaging films. For this purpose, polymeric films based on the blend of high crytalline poly(3-hydroxybutyrate) (PHB) and amorphous polyhydroxyalkanoate (PHA) were prepared. PHB/PHA films displayed Young modulus of 240 MPa, tensile strength at a maximum of 6.6 MPa and elongation at break of 95.2%. The physical properties of PHB/PHA films were modified by the addition of 1-10 wt% of grape seeds lignin (GS-L). GS-L lignin showed a high antioxidant capacity: 238 milligrams of Trolox equivaventts were equal to one gram of grape seeds lignin. The incorporation of grape seeds lignin into PHB/PHA films positively influenced their gas barrier properties, antioxidant acitivity and biodegradability. The values of oxygen and carbon dioxide transition rate of PHB/PHA with 1 wt% of GS-L were 7.3 and 36.3 cm3 m-2 24 h 0.1 MPa, respectively. The inhibition percentage of the ABTS radical determined in PHB/PHA/GS-L was in the range of 29.2% to 100% depending of the lignin concentration. The biodegradability test carried out under controlled compositng environment for 90 days showed that the PHB/PHA film with 50 w/w% of amorphous PHA reached the degradability degree of 68.8% being about 26.6% higher decomposition than in the case of neat high crystalline PHB film. The degradability degree of PHA films in compost within the tested period reflected the modification of the semi-crytalline character and varied with the incorporated lignin. From the toxicological point of view, the composts obtained after biodegradation of PHA films proved the non-toxicity of PHB/PHA/GS-L materials and its degradation products showed a positive effect on white mustard (Sinapis alba L.) seeds germination.
Klíčová slova
Polyhydroxyalkanoates, Lignin, Biodegradation
Autoři
VOSTREJŠ, P.; ADAMCOVÁ, D.; VAVERKOVÁ, M.; ENEV, V.; KALINA, M.; MACHOVSKÝ, M.; ŠOURKOVÁ, M.; MÁROVÁ, I.; KOVALČÍK, A.
Vydáno
7. 8. 2020
Nakladatel
The Royal Society of Chemistry
Místo
Londyn, Spojené království Velké Británie a Severního Irska
ISSN
2046-2069
Periodikum
RSC Advances
Ročník
49
Číslo
1
Stát
Spojené království Velké Británie a Severního Irska
Strany od
29202
Strany do
29213
Strany počet
12
URL
Plný text v Digitální knihovně
BibTex
@article{BUT164668,
author="Pavel {Vostrejš} and Dana {Adamcová} and Magdalena Daria {Vaverková} and Vojtěch {Enev} and Michal {Kalina} and Michal {Machovský} and Markéta {Šourková} and Ivana {Márová} and Adriána {Kovalčík}",
title="Active biodegradable packaging films modified with grape seeds lignin",
journal="RSC Advances",
year="2020",
volume="49",
number="1",
pages="29202--29213",
doi="10.1039/d0ra04074f",
issn="2046-2069",
url="https://pubs.rsc.org/en/Content/ArticleLanding/2020/RA/DORA04074F#!divAbstract"
}Dokumenty