Leprosy bacilli harvested from freshly biopsied tissue from cases of lepromatous, borderline and histoid leprosy were, in conjunction with Mycobacterium lepraemurium and representative mycobacteria, examined cytochemically with and without their pyridine-extractable acid-fastness. Unlike the mycobacteria, unextracted leprosy bacilli failed to give a positive response to the periodic acid Schiff...

A as textile dyes and the fastness properties of the dyed samples were measured. Most of the dyed fabrics tested displayed very good washing and perspiration fastness and series of 2-hydroxy- and 2-amino-6-substituted-5-arylazonicotinate monoazo compounds 7a-e and 9a-c were prepared via condensation of 3-oxo-3-substituted-2-arylhydrazonals 2a-e with active methylene nitriles 3a-d using microwav...

Reducing pollution in various industries such as textile is very important. In this paper, two parallel methods were used to reduce of the process and application dye. The first approach was selection plant-based dyes (Madder with botanical name Rubia tinctorum Reseda odorata) a tannin-based mordant (pomegranate peel Punica granatum). second extraction dyeing ultrasound media. efficiency madder...

The objectives of this study were to evaluate the light fastness of selected natural dyes (madder, weld and woad) and the effect of some commonly used antioxidants and UV absorbers on the light fastness of these dyes. The photofading rate curves of madder and weld fixed on cotton correspond to type II fading rate curves described by Giles. These results are in concordance with those of Cox-Crew...

The sol-gel method is a versatile tool for the modification and functionalization of textiles. This can be also used to support application dyes on textile materials. paper related fluorescence dye Rhodamine B together with an industrial component. Beside spectroscopy, scanning electron microscopy (SEM) energy dispersive spectroscopy (EDS) are investigation produced samples. realized effects st...

Effect of various washing process on the properties of indigo dyed four-way stretch denim fabric was studied in this research. The different washing techniques (Dark washenzymatic treatment, Medium washenzymatic treatment with pumice stone, Bleach washenzymatic treatment with bleaching powder and pumice stone, Acid Wash-Enzymatic treatment with potassium permanganate and pumice stone) were appl...

Abstract Indigo is a natural blue dye produced from the leaves of Indigofera plant, which environmentally friendly and non-carcinogenic. This study aimed to determine reduction potential value molasses brown sugar as reducing agents, examine effect hydrochloric acid concentrations aeration time on amount indigo, test fastness rubbing against solar heat, dry, wet silk fabrics that were dyed by i...

The recent pandemic scenario has caused demand for green products that have medicinal aspects, as well greener approaches global health. Natural dye from plants, particularly harmal seeds, is an excellent alternative to carcinogenic yellow synthetic dyes. current study been conducted isolate natural colorants seeds in methanolic medium through Gamma-Assisted Extraction (GAE). dyeing variables a...

Water-soluble polymers have versatile applications but they are hardly used in wet processing of cellulosic substrates (cotton, viscose, jute, etc.), particularly in dyeing. In this paper, one such water-soluble polymer, polyacrylic acid has been synthesized, characterized and applied to viscose fabric in conjunction with various types of reactive dyes, namely triazinyl, vinyl sulphone, high ex...