Ivanovska Aleksandra, Gajić Ivana Savić, Lađarević Jelena, Milošević Marija, Savić Ivan, Mihajlovski Katarina, Kostić Mirjana
Innovation Center of the Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia.
Faculty of Technology in Leskovac, University of Nis, Bulevar Oslobodjenja 124, 16000 Leskovac, Serbia.
Antioxidants (Basel). 2022 Oct 19;11(10):2059. doi: 10.3390/antiox11102059.
A diluted ethanol orange peel extract was used for sustainable dyeing and functionalization of different fabrics. The extract analysis was performed using UPLC-ESI-MS/MS; its total flavonoid (0.67 g RE/100 g d.w.) and antioxidant (2.81 g GAE/100 g d.w.) contents and antioxidant activity (IC of 65.5 µg/mL) were also determined. The extract dyeing performance at various dyebath pH values was evaluated using multifiber fabric. Among six fabrics, extract possessed the ability for dyeing wool, polyamide, and cellulose acetate (at pH 4.5), which color strength (K/S) values increased after washing (9.7-19.8 vs. 11.6-23.2). Extract:water ratio of 20:35 (/) was found to be sufficient for achieving satisfactory K/S values (i.e., 20.17, 12.56, and 10.38 for wool, polyamide, and cellulose acetate, respectively) that were slightly changed after washing. The optimal dyeing temperatures for wool, polyamide, and cellulose acetate are 55, 35, and 25 °C, while the equilibrium dye exhaustion at those temperatures was achieved after 45, 120, and 90 min, respectively. The color coordinate measurements revealed that wool and polyamide fabrics are yellower than cellulose acetate, while, compared to polyamide and cellulose acetate, wool is redder. Possible interactions between selected fabrics and extract compounds are suggested. All fabrics possessed excellent antioxidant activity (88.6-99.6%) both before and after washing. Cellulose acetate provided maximum bacterial reduction (99.99%) for , and , which in the case of remained unchanged after washing. Orange peel extract could be used for simultaneous dyeing and functionalization of wool and polyamide (excellent antioxidant activity) and cellulose acetate (excellent antioxidant and antibacterial activity) fabrics.
一种稀释的乙醇橙皮提取物被用于不同织物的可持续染色和功能化处理。使用超高效液相色谱-电喷雾串联质谱法（UPLC-ESI-MS/MS）对提取物进行分析；还测定了其总黄酮含量（0.67克芦丁当量/100克干重）、抗氧化剂含量（2.81克没食子酸当量/100克干重）以及抗氧化活性（半数抑制浓度IC为65.5微克/毫升）。使用多纤维织物评估了提取物在不同染浴pH值下的染色性能。在六种织物中，提取物具有对羊毛、聚酰胺和醋酸纤维素染色的能力（在pH值为4.5时），水洗后其色强度（K/S）值增加（9.7 - 19.8对比11.6 - 23.2）。发现提取物与水的比例为20:35（/）足以获得令人满意的K/S值（即羊毛、聚酰胺和醋酸纤维素分别为20.17、12.56和10.38），水洗后这些值略有变化。羊毛、聚酰胺和醋酸纤维素的最佳染色温度分别为55、35和25℃，而在这些温度下分别经过45、120和90分钟达到平衡上染率。色坐标测量表明，羊毛和聚酰胺织物比醋酸纤维素更黄，而与聚酰胺和醋酸纤维素相比，羊毛更红。提出了所选织物与提取物化合物之间可能的相互作用。所有织物在水洗前后均具有优异的抗氧化活性（88.6 - 99.6%）。醋酸纤维素对大肠杆菌和金黄色葡萄球菌的抑菌率最高（99.99%），对于大肠杆菌，水洗后抑菌率保持不变。橙皮提取物可用于羊毛和聚酰胺（具有优异的抗氧化活性）以及醋酸纤维素（具有优异的抗氧化和抗菌活性）织物的同时染色和功能化处理。
