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China Purple Sweet Potato Color Powder Suppliers - Premium Anthocyanin Factory Products for Natural Coloring
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 (Color Shifts)
- 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.
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) and 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 the color is stable.
Application
Used in the preparation of wine, fruit juice, pickled products, candy, jelly, fruit, medicine and other fields.
Wine
Fruit Juice
Pickled Products
Candy
Jelly
Fruit
Medicine
Frequently Asked Questions
Q1: What is the source of Purple Sweet Potato color?
Purple Sweet Potato color is a completely natural pigment obtained by extracting the root of sweet potatoes. Its violet-purple color comes from an antioxidant called anthocyanin.
Q2: How does pH level affect the color of the extract?
The color shifts based on the pH value: it appears deep red-purple under acidic conditions (pH < 7), royal purple under neutral conditions (pH ≈ 7), and blue-green under alkaline conditions (pH > 7).
Q3: Is Purple Sweet Potato color heat-stable?
Yes, acylated anthocyanins retain color well during cooking processes like baking and boiling. However, prolonged high heat exceeding 100°C can cause browning due to caramelization.
Q4: What are the best storage practices to prevent degradation?
Because degradation accelerates when exposed to UV light and oxygen, storing the product in dark, airtight containers is critical to maintaining its quality.
Q5: What are the main commercial applications of this color?
It is widely used as a natural food coloring (PSPC) in ice cream, beverages, and baked goods. It is also used in pharmaceuticals for tablet coatings and in cosmetics for skincare formulations to combat UV-induced oxidative stress.
Q6: What health benefits and core features does it offer?
It provides a pure natural anti-aging health care effect, bright color, strong dyeing ability, and good resistance to light and heat. It remains highly stable and purple under acidic aqueous conditions.