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Purple Sweet Potato color (Anthocyanin powder)
Introduction
Purple Sweet Potato color is obtained by extracting the root of sweet potato, Purple sweet potatoes have a violet-purple flesh and a buff or light brown colored skin. The purple color is completely natural and comes as a result of an antioxidant called anthocyanin, which is also responsible for the color of red cabbage, red wine, and purple cauliflower. Anthocyanins are the flavonoid pigment that is responsible for producing purple, blue and/or red hues in fruits and vegetables.
Final product is the purple red liquid or powder, easily soluble in water and ethyl alcohol solution.
pH Sensitivity: Like other anthocyanins, the color shifts with pH:
Acidic (pH <7): Deep red-purple
Neutral (pH≈7): Royal purple
Alkaline (pH >7): Blue-green (rare in culinary use)
Acidic (pH <7): Deep red-purple
Neutral (pH≈7): Royal purple
Alkaline (pH >7): Blue-green (rare in culinary use)
Stability Factors
Heat Resistance: Acylated anthocyanins retain color better during cooking (e.g., baking, boiling) than non-acylated variants. However, prolonged high heat (>100°C) can cause browning due to caramelization
Light & Oxygen: Degradation accelerates under UV light and oxygen exposure. Storage in dark, airtight containers is critical
Light & Oxygen: Degradation accelerates under UV light and oxygen exposure. Storage in dark, airtight containers is critical
Industrial and Commercial Uses
Natural Food Coloring: Extracted as powder or liquid concentrate (e.g., "Purple Sweet Potato Color" or PSPC) for ice cream, beverages, and baked goods. Replaces synthetic dyes (e.g., Red 40) in "clean-label" products .
Superior Stability: Resists fading in neutral pH foods (e.g., dairy products) better than beetroot-based dyes
Pharmaceuticals & Cosmetics: Tablet Coatings: Replaces synthetic dyes in vitamins and supplements
Skincare Formulations: Anthocyanins in creams combat UV-induced oxidative stress
Superior Stability: Resists fading in neutral pH foods (e.g., dairy products) better than beetroot-based dyes
Pharmaceuticals & Cosmetics: Tablet Coatings: Replaces synthetic dyes in vitamins and supplements
Skincare Formulations: Anthocyanins in creams combat UV-induced oxidative stress
Feature
With pure natural anti-aging health care effect,bright color, strong dyeing ability, good resistance to light and heat. Under acidic aqueous conditions, it is purple and color is stable.
Application
Used in the preparation of wine, fruit juice,pickled products, candy,jelly, fruit, medicine and other fields.
| Item | Specification |
| Color Value(10% 1cm 535nm) | 40-800 |
| Moisture%(powder only)≤ | 7 |
| Ash content%≤ | 2 |
| Arsenic(AS)mg/kg≤ | 2 |
| Lead(pb)mg/kg≤ | 10 |
| Total bacterial(cfu/g)≤ | 1000 |
| Pathogenic Bacteria | Not Detected |