Abstract
The current research presents the exploration of coloring potential of neem bark under the influence of ultrasonic treatment. It is found that good color strength is obtained when tannin from bark is extracted in acidified methanol medium and is used to dye irradiated cotton fabric. New shades and good ratings of fastness were obtained when optimal fabric was mordanted with herbal biomolecules where excellent rating has been obtained after bio-mordanting the fabrics under optimal conditions. It is concluded that US treatment being green tool in natural dyeing has a great potential to isolate colorants from plant sources under mild conditions.
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