• Sandra L. Ibáñez-Calero Universidad Privada Boliviana
  • Kelly E. Loayza Afonso Universidad Privada Boliviana


Palabras clave:

Zongo Valley, Souroubea fragilis, Brachyotum microdon, Fuchsia boliviana, Dyes, Mordents, Antioxidant Activity, DPPH, Photo-protector Property, UV-A and/or UV-B Absorptions.


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 Brachyotum microdon (flowers) needs Al2(SO4)3 to dye the fabric with a red cabernet tone, while the basic extract fixes the fabric with a brown color with FeCl3 and green with FeSO4. The acid extract of the stems of Souroubea fragilis dyed the fabric with a light orange color when Al2(SO4)3 was used as a mordent, while the basic extract provided brown tones thanks to CuSO4 or FeSO4. Finally, the acidic extract of Fuchsia boliviana (flowers and fruits) gave a pale rose and a green tinting with Al2(SO4)3 and FeCl3, respectively. The basic extract of this plant provided a green dyeing with CuSO4 and orange shading with FeCl3. 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 Brachyotum microdon (flowers) showed 82.5% of inhibition at 10µg/ml against DPPH and it absorbed the harmful UV B radiation. The acidic extract of Fuchsia boliviana (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 Souroubea fragilis (stems) presented 92.1% of inhibition at 100µg/ml against DPPH and it absorbed both UV-B and UV-A radiations.


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Afiliación del autor/a

Sandra L. Ibáñez-Calero, Universidad Privada Boliviana

Centro de Investigaciones Fitoquímicas (CIF)


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Cómo citar

Ibáñez-Calero, S. L., & Loayza Afonso, K. E. (2020). NATURAL COLORANTS FROM ZONGO VALLEY (BOLIVIA) AND THEIR TEXTILE APPLICATIONS. Revista Investigación &Amp; Desarrollo, 20(1).