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

Ročnik, Tina (avtor), Kalčikova, Gabriela (mentor), Likozar, Blaž (komentor)

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.

• Jezik: Slovenski jezik
• Ključne besede: biopolimer, biorazgradljivost, film na osnovi hitozana, kostanjev ekstrakt, vodno okolje
• Vrsta gradiva: Magistrsko delo/naloga
• Tipologija: 2.09 - Magistrsko delo
• Organizacija: FKKT - Fakulteta za kemijo in kemijsko tehnologijo
• Leto izida: 2020
• PID: 20.500.12556/RUL-120553
• COBISS.SI-ID: 34327043
• Datum objave v RUL: 22.09.2020

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: Biodegradability testing of chitosan-based films with added chestnut extract in an aqueous environment

Izvleček

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.

• Ključne besede: biodegradability, biopolymer, chitosan-based film, chestnut extract, aqueous environment