20.500.12556/RUL-164613 Eco-finishing of cotton with chitosan and giant goldenrod (Solidago gigantea Aiton) aqueous extract for development of antioxidant and UV protective textiles Giant goldenrod (S. gigantea Aiton) is considered an invasive weed in Europe, Asia, Australia, and New Zealand. In this research, the untreated and chitosan-treated cotton fabrics were functionalized with goldenrod inflorescences aqueous extract, at room temperature and 95°C. Zeta potential of fabrics was determined as a function of pH and the results showed an increased isoelectric point from 2.50 to 5.25 and amphoteric character of the chitosan-treated sample. The antioxidant activity (AA) of extract and functionalized fabrics was determined using DPPH analysis, while color and ultraviolet protection factor (UPF) were determined spectroscopically before and after wash and lightfastness testing. The chitosan pretreatment and dyeing of cotton at higher temperature increased AA (from 41.19 ± 0.28 to 56.08 ± 0.25), UPF (from 33.05 to 51.59) and color strength (K/S) (from 1.74 to 2.21), providing dyed cotton with excellent UV protection and a free radical inhibition activity. The samples had good wash fastness in terms of color (ΔE$_{ab}$* < 1), but not in terms of UV protection (UPF value decreased after washing to 23.47). The overall lightfastness was good to excellent (the UPF values of chitosan and dyed samples did not change much after lightfastness test (UPF = 51.75). 巨型一枝黄花（S.gigantea Aiton）在欧洲、亚洲、澳大利亚和新西兰被认 为是一种入侵杂草. 在本研究中，在室温和95°C下，用一枝黄花花序水提 取物对未处理和壳聚糖处理的棉织物进行功能化. 测定了织物的ζ电位作为 pH的函数，结果表明，壳聚糖处理的样品的等电点从2.50增加到5.25，并 且具有两性性质. 使用DPPH分析法测定提取物和功能化织物的抗氧化活性 （AA），同时在洗涤和耐光牢度测试前后用光谱法测定颜色和紫外线保 护因子（UPF）. 壳聚糖预处理和高温染色提高了AA（从41.19 ± 0.28提高 到56.08 ± 0.25）、UPF（从33.05提高到51.59）和色强度（K/S）（从1.74 提高到2.21），为染色棉提供了良好的紫外线防护和自由基抑制活性. 样 品在颜色方面具有良好的洗涤牢度（ΔEab* < 1），但在紫外线防护方面没 有（洗涤后UPF值降至23.47）. 整体耐光性从好到优（壳聚糖和染色样品 的UPF值在耐光性测试后变化不大（UPF = 51.75）. goldenrod invasive plant eco-functionalisation cotton antioxidant activity UV protection 枝黄花 入侵植物 生态功能化 棉 抗氧化活性 紫外线防护 true false true Angleški jezik Kitajski jezik Članek v reviji 2024-11-05 15:10:08 2024-11-05 15:10:10 2024-11-22 14:55:02 0000-00-00 00:00:00 2023 0 0 KLJUČNE BESEDE: zlata rozga, invazivne rastline, eko-funkcionalizacija, bombaž, antioksidativna aktivnost, UV zaščita 13 str. no. 2, art. 2253371 Vol. 20 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 677 1544-0478 10.1080/15440478.2023.2253371 163168003 Eco-Finishing_of_Cotton_with_Chitosan_and_Giant_Goldenrod__Solidago_gigantea_Aiton__Aqueous_Extract_for_Development_of_Antioxidant_and_UV_Protective_T.pdf Eco-Finishing_of_Cotton_with_Chitosan_and_Giant_Goldenrod__Solidago_gigantea_Aiton__Aqueous_Extract_for_Development_of_Antioxidant_and_UV_Protective_T.pdf 1 929A0232BE8C79ADA5BCB4DC97532B32 aaece19610565c72a17ec3685783d824450a16439262ba6fd3a0c6d862fe18fc b3a13769-9b7f-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=195172 https://www.tandfonline.com/doi/full/10.1080/15440478.2023.2253371 1 55e410f9-9b7f-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=195170 Naravoslovnotehniška fakulteta 0 0 0