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Grey to black color extraction from sumac leaves (Rhus species) involves isolating natural pigments such as tannins, polyphenols, and anthraquinones, which contribute to dark grey and black hues. The process begins with harvesting fresh or dried sumac leaves, followed by cleaning and drying to reduce moisture content. The leaves are then ground into fine powder to increase extraction efficiency. Extraction is typically performed using aqueous alkaline solutions or ethanol under controlled temperature and pH to maximize pigment yield and deepen color intensity. Techniques like maceration or ultrasound-assisted extraction (UAE) may be applied to enhance pigment recovery. The resulting extract is filtered and concentrated, producing stable grey to black natural dyes widely used in textile dyeing, leather tanning, and ink production. Careful control of extraction parameters is essential to prevent pigment degradation and ensure consistent color quality.

Herbal / Solvent Extraction Plants

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Herbal / Solvent Extraction Plants

Grey to Black Color Extraction from Sumac Leaves

Herbal / Solvent Extraction Plants

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