Testiranje biorazgradljivosti filmov na osnovi hitozana z dodanim kostanjevim ekstraktom v vodnem okolju

magistrsko delo

Tina Ročnik (Author), Gabriela Kalčíková (Mentor), Marjan Marinšek (Thesis defence commission member), Aleš Podgornik (Thesis defence commission member), Blaž Likozar (Co-mentor)

Abstract

Kot embala_ni material ima plastika _tevilne prednosti, ampak zaradi njene slabe razgradljivosti v okolju se i__ejo drugi alternativni materiali, ki bi imeli podobne lastnosti, brez negativnih posledic za okolje in ljudi. Eden izmed njih so tudi filmi na osnovi hitozana z dodanimi naravnimi ekstrakti, ki imajo dobre za__itne, antioksidativne in antimikrobne lastnosti. Vendar je njihova usoda v okolju slabo raziskana. Zato smo v sklopu magistrskega dela testirali biorazgradljivost teh filmov v vodnem okolju. Razgradljivost filmov smo spremljali tudi na podlagi spremembe v vsebnosti polifenolov, spremembe v izgledu filmov in analize FT-IR. Rezultati so pokazali, da filmi na osnovi hitozana v vodnem okolju niso biorazgradljivi, vendar se zaradi delovanja mikroorganizmov vseeno ka_ejo spremembe v strukturi in izgledu filmov.

Keywords

plastika;biopolimerni materiali;biopolimeri;biorazgradljivost;določanje biorazgradljivosti;film na osnovi hitozana;kostanjev ekstrakt;vodno okolje;magistrska dela;

Data

Language:	Slovenian
Year of publishing:	2020
Typology:	2.09 - Master's Thesis
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher:	[T. Ročnik]
UDC:	502.51:504.5:678.569(043.2)
COBISS:	34327043
Views:	390
Downloads:	143
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Biodegradability testing of chitosan-based films with added chestnut extract in an aqueous environment
Secondary abstract:	As a packaging material, plastic has many advantages, but due to its poor degradability in the environment, other alternative materials with similar properties have been developed, but without negative consequences for the environment and people. One of them could be chitosan-based films with added natural extracts, which have good protective, antioxidant and antimicrobial properties. However, their fate in the natural environment is practically unknown. Therefore, the aim of the thesis was to evaluate biodegradability of these films in the aqueous environment. We monitored the degradability of films based on changes in total polyphenolic content, films structure, and the FT-IR analysis. The results showed that chitosan-based films are not biodegradable in the aqueous environment, but some structural changes and appearance of the films due to the action of microorganisms occurred.
Secondary keywords:	biodegradability;biopolymer;chitosan-based film;chestnut extract;aqueous environment;
Type (COBISS):	Master's thesis/paper
Study programme:	1000376
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, smer Kemijsko inženirstvo
Pages:	45 str.
ID:	12044661