The aim of this study was to investigate whether complexly constituted phenolics extracts from pepper
waste may be utilized for the recovery of natural colored preparations.
At first, different solvents mixture were compared to determine the best solvent for extraction of
phenolic compounds from pepper by-product. The three solvents ethanol, acetone and water were used.
The total phenolic content (TPC), the total flavonoid content (TFC) and the relative color strength (K/S)
were studied using a simplex-centroid design. Acetone–water (68–32%) with 224 mg/L for total phenolic
content and acetone–water (61–38%) with 0.446 mg/L for total flavonoid content were the best solvent
mixtures for the extraction.
The colored extract of pepper by-products was applied on woolen fabrics to investigate the dyeing characteristics
and antimicrobial efficacy against common human pathogens such as Pseudomonas aeruginosa
and Staphylococcus aureus. The results indicate that extract can be applied on woolen fabrics to produce
colored clothing and textiles with acceptable antimicrobial properties.