20.500.12556/RUL-182099 Barvanje svile z naravnimi barvili ostankov živilsko-predelovalne industrije Dyeing silk with dyes obtained from food processing industry waste Namen diplomskega dela je bil raziskati možnosti uporabe odpadka živilsko-predelovalne industrije za pridobivanje barvil za barvanje svilene tkanine (surova in degumirana svila). Za bio-čimžanje vzorcev je bil uporabljen ekstrakt olupka granatnega jabolka, barvanje pa izvedeno z izvlečki koščice avokada, listov oljke in hmelja (tudi hmeljevina). Izvleček olupka granatnega jabolka, uporabljenega za bio-čimžanje, je bil pripravljen v koncentraciji 2 g/l. Izvlečki za barvanje so bili pripravljeni v koncentraciji 100 g/l. Barvanje in bio-čimžanje je potekalo pri kopelnem razmerju 1:40, in sicer 60 minut pri 60 °C. Barva nečimžanih in bio-čimžanih ter barvanih vzorcev je bila številčno ovrednotena na refleksijskem spektrofotometru. Barvne vrednosti so bile izmerjene tudi po testu obstojnosti na pranje in svetlob. Ne glede na uporabljeno naravno barvilo ali substrat, so imeli bio-čimžani vzorci višjo globino obarvanja, bili so temnejši in bolj rumeni od nečimžanih. Najbolj globoko in najbolj temno je svilo obarval izvleček listov hmelja. Vzorcem so bile določene funkcionalne lastnosti, in sicer antioksidativna aktivnost in ultravijolični zaščitni faktor (UZF). Vzorci surove svile so nudili višjo stopnjo UV-zaščite od vzorcev degumirane svile, bio-čimžani vzorci pa višjo stopnjo zaščite (zadovoljivo ali dobro) od nečimžanih vzorcev. Antioksidativne aktivnosti vseh vzorcev so bile nizke. Po pranju so vsi vzorci (razen ne barvanega in ne čimžanega) postali svetlejši, manj rumeni, znižala se jim je globina obarvanja. Pri vzorcih, barvanih s hmeljevino in izvlečkom koščice avokada, so se z bio-čimžanjem izboljšale pralne obstojnosti. Bio-čimžani vzorci, barvani z ekstraktom listov oljke, hmeljevino in nebarvan bio-čimžan vzorec so imeli boljšo svetlobno obstojnost od ne čimžanih vzorcev. Po pranju se je UZF vzorcem degumirane svile znižal. The purpose of the thesis was to explore the possibilities of using waste from the food processing industry to obtain dyes for dyeing silk fabric (raw and degummed silk). Pomegranate peel extract was used for bio-mordanting of the samples, while avocado pit, olive leaf, and hop (including hop cones) extracts were used for dyeing. The pomegranate peel extract used for bio-dyeing was prepared in a concentration of 2 g/l. The extracts for dyeing were prepared at a concentration of 100 g/l. Dyeing and bio-mordanting were carried out at a bath ratio of 1:40 for 60 minutes at 60 °C. The colour of the unmordanted, bio-mordanted, and dyed samples was quantitatively evaluated on a reflection spectrophotometer. The colour values of the samples were also measured after washing and light fastness tests. Regardless of the natural dye or substrate used, the bio-mordanted samples had a higher colour depth, were darker, and were more yellow than the unmordanted samples. The deepest and darkest silk was dyed with hop leaf extract. The functional properties of the samples, i.e. antioxidant activity, and ultraviolet protection factor (UPF) were determined. Raw silk samples offered a higher UV protection than degummed silk samples, while bio-dyed samples offered a higher level of protection (satisfactory or good) than undyed samples. The antioxidant activity of all samples was low. After washing, all samples, except for the uncoloured and unmordanted ones, became lighter, less yellow, and their colour depth decreased. The wash fastness of samples dyed with hop resin and avocado pit extract was improved by bio-mordanting. Bio-mordanted samples dyed with olive leaf extract, hop resin, and undyed bio-mordanted samples had better light fastness than non-mordanted samples. After washing, the UPF of degummed silk decreases. naravna barvila bio-čimžanje svila listi oljke listi hmelja koščica avokada natural dyes bio-mordanting silk olive leaves hop leaves avocado seed true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-04-24 09:01:25 2026-04-24 09:01:40 2026-04-25 04:48:47 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 113581 29054.pdf 29054.pdf 1 5137D7BF9C66BA04CC0DB4BDFD4B23B0 9accc6ab604f8d2008bea80a3f0d11f16e18172164284ecb40fec1061b48e551 30ce05bc-3fab-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=233037 Naravoslovnotehniška fakulteta 0 0 0