Natural dye and biomordants obtained from agro-industrial residues aiming at more sustainable textile dyeing and materials with bactericidal action and UV protection

• Grant number: 23/15419-9
• Support Opportunities: Regular Research Grants
• Start date: November 01, 2024
• End date: October 31, 2026
• Field of knowledge: Interdisciplinary Subjects
• Principal Investigator: Sirlene Maria da Costa
• Grantee: Sirlene Maria da Costa
• Host Institution: Escola de Artes, Ciências e Humanidades (EACH). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated researchers: Annie Alexandra Cerón Sánchez ; Bruna Beatriz Petreca ; Rodrigo Cardoso de Oliveira ; Silgia Aparecida da Costa

Abstract

The dyeing process is one of the main responsible for the environmental problems caused by the textile industries. Natural dyes, in addition to being non-toxic, can add value to a product, due to the bioactive properties present in the extracts of certain raw materials, such as residual pomegranate peels (Punica granatum L.), coffee peels (Coffea arabica L.) and of avocado pits (Persea americana Mill.). These materials have high levels of flavonoids and tannins, a composition that provides dyeing, antimicrobial and ultraviolet protection capabilities. The objective of the research is to study the dyeing, biomordenting, bactericidal and photoprotective properties of extracts obtained from agro-industrial waste on cotton fabric. Extractions will be carried out with distilled water and decoction, using a ratio of 1:5 (m/v) at 70ºC for 10 min three intermittent times with cooling, filtering, freezing and freeze-drying. The extracts will be characterized for pH, thermogravimetry (TG) and differential scanning calorimetry (DSC), ultraviolet visible spectroscopy (UV-Vis), Fourier transform infrared attenuated total reflection spectroscopy (FTIR-ATR), thin layer chromatography comparative (CCDC), high performance liquid chromatography with ultraviolet detector (HPLC-UV) and colorimetric coordinates. Dyeing will be carried out according to the dyeing curve adapted from Bechtold et al. (2003). The dyed fabrics will be evaluated by colorimetric analyzes and color fastness tests to washing, light and acid and alkaline sweat. The bactericidal tests will be carried out using the Clinical and Laboratory Standards Institute (2012) method as a reference. The UPF Ultraviolet Protection Factor will be determined in accordance with AS/NZS 4399-2017. It is expected to be able to transfer the properties of the extract to the tissue, giving it bactericidal action against the gram-positive bacteria Staphylococcus aureus and Staphylococcus epidermidis, and the gram-negative Acinetobacter Baumannii, mainly responsible for complications in patients with atopic dermatitis and pressure ulcers; and photoprotective action. It is intended to carry out an augmented reality assessment of waste and functionalized fabrics, as a response to the environmental and social challenges resulting from the rapid and extensive production of clothing, which often leads to accumulation in landfills, the development of new, more sustainable textile materials has emerged. as a strategic solution. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SILVA, PATRICIA MUNIZ DOS SANTOS; FREEMAN, HAROLD S.; DA COSTA, SILGIA APARECIDA; SANTOS, DOUGLAS DA SILVA; DE LIMA, FERNANDO SOARES; DE QUEIROZ, RAYANA SANTIAGO; FIASCHITELLO, TICIANE ROSSI; DA COSTA, SIRLENE MARIA. Lignocellulose-based Stryphnodendron adstringens bark as a natural dye source for textiles: Extraction and dyeing studies. COLORATION TECHNOLOGY, v. N/A, p. 15-pg., 2025-02-20. (23/15419-9)