@article{Ibáñez-Calero_Loayza Afonso_2020, title={NATURAL COLORANTS FROM ZONGO VALLEY (BOLIVIA) AND THEIR TEXTILE APPLICATIONS}, volume={20}, url={https://www.upb.edu/revista-investigacion-desarrollo/index.php/id/article/view/207}, DOI={10.23881/idupbo.020.1-1i}, abstractNote={<p class="western" lang="en-US" align="justify"><span style="font-family: ’Times New Roman’, serif;"><span>Three plants collected at the Zongo Valley were evaluated for textile dyeing applications. The species selected were extracted following acidic and basic procedures to obtain colored samples, that were submitted to direct and indirect (with mordents) dyeing techniques. In all experiments the need of a mordant was observed and the type of chemical mordant was identified. In each work, the strength of the fabric’s dye with the natural colorant was evaluated using a series of washing, rinsing, drying, ironing and exposure to sun light protocols. It was found that the acidic extract of </span></span><span style="font-family: ’Times New Roman’, serif;"><span><em>Brachyotum microdon </em></span></span><span style="font-family: ’Times New Roman’, serif;"><span>(flowers) needs </span></span><span style="font-family: ’Times New Roman’, serif;"><span>Al</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>2</span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>(SO</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>4</span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>)</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>3 </span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>to dye the fabric with a red cabernet tone, while the basic extract fixes the fabric with a brown color with FeCl</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>3</span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span> and green with FeSO</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>4</span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>. The acid extract of the stems of </span></span><span style="font-family: ’Times New Roman’, serif;"><span><em>Souroubea fragilis</em></span></span><span style="font-family: ’Times New Roman’, serif;"><span> dyed the fabric with a light orange color when Al</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>2</span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>(SO</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>4</span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>)</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>3 </span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>was used as a mordent, while the basic extract provided brown tones thanks to CuSO</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>4 </span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>or FeSO</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>4</span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>. Finally, the acidic extract of </span></span><span style="font-family: ’Times New Roman’, serif;"><span><em>Fuchsia boliviana </em></span></span><span style="font-family: ’Times New Roman’, serif;"><span>(flowers and fruits) gave a pale rose and a green tinting with </span></span><span style="font-family: ’Times New Roman’, serif;"><span>Al</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>2</span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>(SO</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>4</span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>)</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>3 </span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>and FeCl</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>3</span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>, respectively. The basic extract of this plant provided a green dyeing with CuSO</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>4 </span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>and orange shading with FeCl</span></span><sub><span style="font-family: ’Times New Roman’, serif;"><span>3</span></span></sub><span style="font-family: ’Times New Roman’, serif;"><span>. Different types of fabrics were evaluated, and the best dyeing results were observed with cotton. All the extracts studied presented antioxidant and photoprotector activities. The acidic extract of </span></span><span style="font-family: ’Times New Roman’, serif;"><span><em>Brachyotum microdon </em></span></span><span style="font-family: ’Times New Roman’, serif;"><span>(flowers) showed 82.5% of inhibition at 10µg/ml against DPPH and it absorbed the harmful UV B radiation. The acidic extract of </span></span><span style="font-family: ’Times New Roman’, serif;"><span><em>Fuchsia boliviana </em></span></span><span style="font-family: ’Times New Roman’, serif;"><span>(flowers and fruits) gave an 86.7% of inhibition at 10µg/ml against DPPH and it also absorbed the damaging UV B radiation. Finally, the acidic extract of </span></span><span style="font-family: ’Times New Roman’, serif;"><span><em>Souroubea fragilis</em></span></span><span style="font-family: ’Times New Roman’, serif;"><span> (stems) presented 92.1% </span></span><span style="font-family: ’Times New Roman’, serif;"><span>of inhibition at 100µg/ml against DPPH and it absorbed both UV-B and UV-A radiations.</span></span></p>}, number={1}, journal={Revista Investigación & Desarrollo}, author={Ibáñez-Calero, Sandra L. and Loayza Afonso, Kelly E.}, year={2020}, month={jul.} }