20.500.12556/RUL-120553 Testiranje biorazgradljivosti filmov na osnovi hitozana z dodanim kostanjevim ekstraktom v vodnem okolju Biodegradability testing of chitosan-based films with added chestnut extract in an aqueous environment 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. 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. biopolimer biorazgradljivost film na osnovi hitozana kostanjev ekstrakt vodno okolje biodegradability biopolymer chitosan-based film chestnut extract aqueous environment true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2020-09-22 14:00:01 2020-09-22 14:00:09 2022-09-01 03:59:31 0000-00-00 00:00:00 2020 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 9221 34327043 Rocnik_Tina_-_Testiranje_biorazgradljivosti_filmov_na_osnovi_hitozana_z_dodanim_kostanjevim_ekst.pdf Rocnik_Tina_-_Testiranje_biorazgradljivosti_filmov_na_osnovi_hitozana_z_dodanim_kostanjevim_ekst.pdf 1 2F2D40551D077AE7B386BD4CEC23CF37 b5de7dce8d3c3c4fea8fffa8379b42ac71453e5b28ce3254611783837f62eb4b 1e32102d-a1ba-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=135364 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0