Extraction of natural colorant from purple sweet potato and dyeing of fabrics with silver nanoparticles for augmented antibacterial activity against skin pathogens.
Extraction of natural colorant from purple sweet potato and dyeing of fabrics with silver nanoparticles for augmented antibacterial activity against skin pathogens.
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DOI：
10.1016/j.jphotobiol.2017.07.001
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发表时间：
2017-08
期刊：
影响因子：
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通讯作者：
P. Velmurugan;Jae-In Kim;Kangmin Kim;Jung-Hee Park;Kui-jae Lee;Woo-Suk Chang;Yool‐Jin Park;Min Cho-Min
中科院分区：
文献类型：
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作者：
P. Velmurugan;Jae-In Kim;Kangmin Kim;Jung-Hee Park;Kui-jae Lee;Woo-Suk Chang;Yool‐Jin Park;Min Cho-Min
本研究的主要目的是以酸化乙醇（A. EtOH）为提取溶剂，通过水浴和超声水浴从紫甘薯粉（PSPP）中提取天然色素。在优化溶剂着色剂提取条件时，超声酸化乙醇在pH 2、温度80℃、A. EtOH 20 mL、PSPP 1.5 g、时间45 min、超声输出功率75 W下具有较高的提取能力和颜色强度。随后，使用纺织品（皮革、丝绸和棉）染色的优化条件提取着色剂。这种天然着色剂提取技术可以避免提取过程中严重的环境污染，是合成染料的替代品，使用更少的溶剂并简化提取程序。提取的紫甘薯天然着色剂（PSPC）用于以环保方式对皮革、丝绸和棉织物进行染色，通过原位合成银纳米颗粒（AgNP）和染色增强抗菌活性。获得较高色强度 (K/S) 值的最佳染色条件是 pH 2 和 70 °C，染色 45 分钟。测量比色参数 L*、a*、b*、C 和 H 以确定颜色的深度。研究了未染色对照、用 PSPC 染色以及用 PSPC 和 AgNPs 混合处理的皮革、丝绸和棉织物染色的傅里叶变换红外光谱 (FTIR) 光谱，以研究纤维类型、纳米颗粒和染料之间的相互作用。通过扫描电子显微镜-能量色散 X 射线光谱 (SEM-EDS) 研究了皮革、丝绸和棉织物的结构形态以及 AgNPs 与元素成分的锚定。单独染料和纳米颗粒染料的干摩擦牢度和湿摩擦牢度分别为4-5级和4级。因此，本研究的结果清楚地表明，在抗菌纺织品整理剂的开发中应考虑AgNPs的原位合成和染色。
The main objective of this study was to extract natural colorant from purple sweet potato powder (PSPP)viaa water bath and ultrasound water bath using acidified ethanol (A. EtOH) as the extraction solvent. When optimizing the colorant extraction conditions of the solvents, acidified ethanol with ultrasound yielded a high extraction capacity and color intensity at pH 2, temperature of 80 °C, 20 mL of A. EtOH, 1.5 g of PSPP, time of 45 min, and ultrasonic output power of 75 W. Subsequently, the colorant was extracted using the optimized conditions for dyeing of textiles (leather, silk, and cotton). This natural colorant extraction technique can avoid serious environmental pollution during the extraction and is an alternative to synthetic dyes, using less solvent and simplified abstraction procedures. The extracted purple sweet potato natural colorant (PSPC) was used to dye leather, silk, and cotton fabrics in an eco-friendly approach with augmented antibacterial activity byin situsynthesis of silver nanoparticles (AgNPs) and dyeing. The optimal dyeing conditions for higher color strength (K/S) values were pH 2 and 70 °C for 45 min. The colorimetric parametersL∗,a∗,b∗,C, andHwere measured to determine the depth of the color. The Fourier transform infrared spectroscopy (FTIR) spectra of undyed control, dyed with PSPC and dyed with blend of PSPC and AgNPs treated leather, silk and cotton fabric were investigated to study the interaction among fiber type, nanoparticles, and dye. The structural morphology of leather and silk and cotton fabrics and the anchoring of AgNPs with elemental compositions were investigated by scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDS). The dry and wet rubbing fastness for dye alone and dye with nanoparticles were grade 4–5 and 4, respectively. Thus, the results of the present study clearly suggest thatin situsynthesis of AgNPs along with dyeing should be considered in the development of antimicrobial textile finishes.