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VOSTREJS, P. -- ADAMCOVÁ, D. -- VAVERKOVÁ, M D. -- ENEV, V. -- KALINA, M. -- MACHOVSKY, M. -- ŠOURKOVÁ, M. -- MÁROVÁ, I. -- KOVALCIK, A. Active biodegradable packaging films modified with grape seeds lignin. RSC advances. 2020. v. 10, no. 49, p. 29202--29213. ISSN 2046-2069. URL: https://doi.org/10.1039/D0RA04074F

Original name:
Active biodegradable packaging films modified with grape seeds lignin
Czech name:
Written by (author): Pavel Vostrejs
doc. Bc. Ing. Dana Adamcová, Ph.D.
doc. Mgr. Ing. Magdalena Daria Vaverková, Ph.D.
Ing. Vojtěch Enev
Michal Kalina
Michal Machovsky
Ing. Markéta Šourková
doc. Ing. Ivana Márová, CSc.
Adriana Kovalcik
Department:
Department of Applied and Landscape Ecology
Kind of publication:
article in a professional periodical
Periodical:
RSC advances
Nature of article:
paper
Volume no. (year): 10
Periodical number within the volume: 49
Year of publication:
2020
Starting page:
29202
Up to page:
29213
Number of pages: 12
Sub-specification: článek je obsažen v databázi Web of Science
UT code by Web of Science:
EID code by Scopus:
Form of publication: printed version
Original language:
English
Description in original language:
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 crystalline 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 equivalents 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 activity 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 mMINUS SIGN 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 on the lignin concentration. The biodegradability test carried out under controlled composting 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-crystalline 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.
Description in English:
Description in Czech:
Key words:
czech: kompostování, biologicky rozložitelný, lignin
english: composting, biodegradable, lignin
Field of result:
Chemical sciences
Year of submission:
2020
Year of transmission:
RIV identification number:
URL:
https://doi.org/10.1039/D0RA04074F
 
Entry made by:
Markéta Hejčová, DiS.
Last change:
09/08/2020 14:32 (Markéta Hejčová, DiS.)

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Source specification:

RSC advances. Cambridge: ISSN 2046-2069.

Original name:
RSC advances
Czech name:
Written by (author):
Kind of publication:
magazine
ISSN:
2046-2069
Country of publisher:
United Kingdom of Great Britain and Northern Ireland
Place of publishing:
Cambridge
Publisher:
Royal Society of Chemistry
URL:
Reviewed magazine:
no
Original language:
English
Description in original language:
Description in English:
Description in Czech:
 
Entry made by:
Markéta Hejčová, DiS.
Last change: 08/31/2020 12:28 (Šárka Novotná)

Evaluation of publication:

1
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4
5
        
1
2
3
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5
bad
 
good
        
uninteresting
 
interesting
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Average score: -        Assessed: 0Average score: -
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234
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123
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amateur
 
professional
        
theoretical
 
practical
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