Muruganandham Moorthy, Tamilselvi Yuvaraj, Sivasubramanian Kanagasabapathy, Velmurugan Palanivel, Oleyan Al-Otibi Fatimah, Sivakumar Subpiramaniyam
Centre for Materials Engineering and Regenerative Medicine, Bharath Institute of Higher Education and Research, Chennai, Tamil Nadu, India.
Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia.
Front Chem. 2025 May 2;13:1474160. doi: 10.3389/fchem.2025.1474160. eCollection 2025.
Natural dyes offer an eco-friendly alternative to synthetic colorants in textile processing. This study explores the sustainable dyeing of cotton, silk, and leather using pigment-rich extracts from seeds, with a focus on process optimization and antibacterial efficacy.
Using an array of extraction solvents [water, methanol, ethanol, ethanol: methanol (1:1)] and extraction techniques [direct heat (DH), ultrasonic water bath (USB), ultrasonic probe, (USP)], seeds were utilized to produce a yellow-orange dye. The color strength of the extracted dye was investigated using a UV-Visible spectrophotometer to measure the absorbance wavelength. The functional groups identified in the extracted natural dye were described using an FTIR spectrophotometer.
Using methanol as the solvent and 5 g of seed at 60°C for 60 min, the highest color yield was observed in USB. Using the ultrasonic water bath dyeing method at 60°C for 40 min without using any moderant, cotton, silk fabric, and leather were effectively colored in a yellow-orange color. The L*, a*, and b* values of the dyed material treated using the USB approach were 80.95, 4.52, 75.35 for cotton, 88.65, -1.35, 62.85 for silk, and 79.55, 015.35, 66.45 for leather, respectively. Compared to the other bacterial reduction, 85.25% of the colored materials showed substantial antibacterial action against sp. sp. (76.69%), sp. (75.83%), sp. (74.24%), and sp. (74.21%) were the following most prevalent bacteria. The ultraviolet protection factor (UPF) measurements showed that leather and cotton treated with seed dye had higher UV radiation shielding properties.
在纺织品加工中，天然染料为合成色素提供了一种环保替代品。本研究探索了使用富含色素的种子提取物对棉、丝绸和皮革进行可持续染色，重点在于工艺优化和抗菌效果。
使用一系列提取溶剂[水、甲醇、乙醇、乙醇:甲醇(1:1)]和提取技术[直接加热(DH)、超声水浴(USB)、超声探头(USP)]，利用种子制备出一种黄橙色染料。使用紫外可见分光光度计测量提取染料的吸光度波长，以研究提取染料的色强度。使用傅里叶变换红外光谱仪描述提取的天然染料中鉴定出的官能团。
以甲醇为溶剂，在60°C下使用5克种子60分钟，在超声水浴中观察到最高的色产率。在60°C下使用超声水浴染色法40分钟，不使用任何媒染剂，棉、丝绸织物和皮革有效地染成了黄橙色。采用超声水浴法处理的染色材料的L*、a和b值，棉分别为80.95、4.52、75.35，丝绸分别为88.65、 -1.35、62.85，皮革分别为79.55、15.35、66.45。与其他细菌减少情况相比，85.25%的染色材料对[具体菌种1]显示出显著的抗菌作用。具体菌种2、具体菌种3、具体菌种4和具体菌种5是接下来最普遍的细菌。紫外线防护系数(UPF)测量表明，用[种子名称]染料处理的皮革和棉具有更高的紫外线辐射屏蔽性能。
