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Red Color Extraction from Inner Bark of Red Maple Tree (Acer rubrum)

Red color extraction from the inner bark of the Red Maple tree (Acer rubrum) involves isolating natural pigments such as anthocyanins and tannins, which contribute to its distinctive reddish hue. The process starts with harvesting fresh or dried inner bark, which is then cleaned, sliced, and ground into a fine powder to increase extraction efficiency. Extraction is typically carried out using acidified aqueous solvents often water mixed with mild acids like citric or hydrochloric acid to stabilize the red pigments during processing. Techniques such as maceration, ultrasound-assisted extraction (UAE), or microwave-assisted extraction (MAE) can be employed to enhance pigment yield and reduce extraction time. After extraction, the solution is filtered and concentrated under controlled temperature to preserve color vibrancy and pigment stability. The resulting red extract is used in natural dyes for textiles, inks, cosmetics, and artisanal crafts. Controlling pH, temperature, and exposure to light during extraction is crucial to maintain the rich red coloration.

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