Brown Color Extraction from Dandelion Roots
Dandelion roots (Taraxacum officinale) contain tannins, inulin, and phenolic compounds that produce earthy brown tones when extracted. The shade and intensity of the dye depend on the root’s maturity, extraction method, and pH conditions.
Collection & Preparation
- Season: Roots are best harvested in late fall or early spring when they are rich in pigments and nutrients.
- Roots are washed thoroughly to remove dirt and soil.
- Fibrous and damaged parts are trimmed off.
- The roots are chopped into small pieces or crushed to increase the surface area for better pigment release.
- Roots can be air-dried or sun-dried at low temperatures (below 60°C) to preserve tannins and intensify color.
Extraction Methods
- Water Extraction (Traditional Decoction)
- Alcohol Extraction (For Deeper Pigments)
- Fermentation-Based Extraction (For Rich, Aged Browns)
- Steam Distillation (For Pigments & Essential Oils)
Filtration & Purification
- Centrifugation or fine filtration removes unwanted particulates.
- pH Balancing: Adjusting pH stabilizes the color and prevents fading.
Concentration & Storage
- Liquid Extracts: Stored in dark glass containers at 4–10°C to prevent oxidation.
- Powdered Extracts: Freeze-dried or spray-dried for long-term storage and easy use.
Applications of Yellow Pigment
- Used for natural wool, cotton, and silk fabrics, creating warm, earthy brown hues.
- Ideal for natural wood finishing and eco-friendly leather staining.
- Incorporated into natural, sustainable inks and artistic paints.
- Added to natural hair dyes and skincare products for subtle brown tones.
Would you like a detailed guide for large-scale industrial production or specific textile applications?
