1.Purple Yam Powder Supplier & Manufacturer | Bulk Extract Factory – Aiherba
Purple Yam Powder (Ipomoea batatas) – Bulk Supplier for Functional Food, Dietary Supplements & Cosmetic Applications
AIHerba® offers premium 100% pure Purple Yam Powder, derived from the root of Ipomoea batatas. Rich in anthocyanins, dietary fiber, and natural antioxidants, this natural plant extract is supplied in bulk for food & beverage manufacturers, nutraceuticals, cosmetics formulators, and health supplement companies worldwide. Our GMP-certified factory ensures consistent high potency, purity, and traceability, with full Certificates of Analysis (COA), heavy metal and pesticide testing, and compliance with ISO, HACCP, and FDA guidelines. Ideal for functional food colorants, health supplement formulations, and natural cosmetic ingredients, AIHerba Purple Yam Powder helps global brands deliver high-quality, safe, and effective products.
2. What Is Purple Yam Powder
Purple Yam Powder is a fine, naturally purple powder extracted from the tuberous roots of Ipomoea batatas, also known as Okinawan sweet potato. It is non-GMO, gluten-free, vegan, and allergen-free, widely used as a natural colorant, nutritional enhancer, and functional ingredient across food, dietary supplements, and cosmetics.
3. Product Source & Origin
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Botanical Name: Ipomoea batatas
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Origin: Shaanxi, China – controlled cultivation with full traceability
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Part Used: Root tuber
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Harvest Season: October–December
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Extraction Method: Water-ethanol extraction, spray drying, or supercritical CO₂ extraction for high anthocyanin retention
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GMP Facility: ISO 9001:2015 certified, HACCP compliant
4. Mechanism & Functional Benefits
Purple Yam Powder is rich in anthocyanins, flavonoids, and polysaccharides. While avoiding health claims, its bioactive profile makes it suitable for:
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Food & beverage natural coloring – stable purple hue without synthetic additives
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Antioxidant support in formulations – used in nutraceuticals and functional foods
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Cosmetic applications – natural pigment for skincare and personal care products
5. Usage Guidelines & Application
| Industry | Application | Recommended Dosage / Use Level | Notes |
|---|---|---|---|
| Functional Food | Bakery, beverages, snacks | 0.1–2% w/w | Mix with base ingredients; avoid direct high-heat exposure |
| Nutraceutical Supplements | Capsules, tablets, powders | 50–500 mg per serving | Ensure even blending and stability testing |
| Cosmetics & Personal Care | Face masks, creams, powders | 0.5–3% | Compatibility with emulsions must be tested |
Traditional Uses: Used in traditional cuisines for natural color and flavor; incorporated in desserts, sweet soups, and drinks.
6. Technical Parameters & Specifications
| Parameter | Specification | Method / Standard |
|---|---|---|
| Appearance | Fine purple powder | Visual |
| Particle Size | 80–300 mesh | Laser diffraction |
| Moisture | ≤10% | GB 5009.3-2016 |
| Ash | ≤5% | AOAC 923.03 |
| Anthocyanin Content | ≥2.5% | UV-VIS |
| Solubility | Water-soluble | Visual |
| Odor & Taste | Characteristic mild sweet | Organoleptic |
7. Certificates of Analysis COA
Pesticide Residues
| Compound | Limit | Method |
|---|---|---|
| Chlorpyrifos | ND | GC-MS |
| DDT | ND | GC-ECD |
| Aldrin/Dieldrin | ND | GC-ECD |
Heavy Metals
| Metal | Limit | Method |
|---|---|---|
| Lead (Pb) | ≤0.5 mg/kg | ICP-MS |
| Arsenic (As) | ≤0.5 mg/kg | ICP-MS |
| Cadmium (Cd) | ≤0.1 mg/kg | ICP-MS |
| Mercury (Hg) | ≤0.1 mg/kg | ICP-MS |
Microbiological
| Test | Limit | Method |
|---|---|---|
| Total Plate Count | ≤1000 CFU/g | ISO 4833 |
| Yeast & Mold | ≤100 CFU/g | ISO 21527 |
| E. coli | ND | ISO 16649 |
| Salmonella | ND | ISO 6579 |
8. Production Process
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Selection & Washing: Fresh purple yams are carefully selected and washed to remove impurities
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Peeling & Slicing: Tubers are sliced for uniform drying
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Drying: Low-temperature drying to preserve anthocyanins
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Extraction: Water-ethanol or supercritical CO₂ extraction
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Spray Drying: Produces fine, stable powder
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Quality Control: COA, heavy metal, pesticide, microbial testing
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Packaging & Storage: Moisture-proof, sealed packaging
9. Storage & Shelf Life
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Storage: Cool, dry place; avoid direct sunlight and humidity
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Shelf Life: 24 months under recommended storage
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Packaging: 25 kg kraft drum with inner PE lining
10. Sample Policy & MOQ
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Sample Availability: 50–200 g for testing
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Minimum Order Quantity (MOQ): 25 kg
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Shipping: Air, sea, or courier; global export compliant
11. Industry Applications & Case Studies
Scenario 1: Functional Food & Beverage
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Application: Purple Yam Powder added to smoothies and functional snacks for natural color
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Outcome: Consistent purple hue, improved visual appeal, maintained natural labeling
Scenario 2: Nutraceutical Supplement
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Application: Incorporated into capsules with vitamins for antioxidant support
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Outcome: Stable, standardized anthocyanin content, full COA documentation
Scenario 3: Cosmetic & Skincare Formulation
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Application: Natural pigment for face masks and creams
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Outcome: Safe, vegan-friendly natural color, reduced synthetic dye dependency
12. Comparative & Procurement Guide
| Feature | AIHerba Purple Yam Powder | Standard Market Powder |
|---|---|---|
| Anthocyanin Content | ≥2.5% | 1–2% |
| Mesh | 80–300 | 60–200 |
| Certifications | GMP, ISO, HACCP | Often missing |
| Traceability | Full supply chain | Limited |
| B2B Support | COA, technical docs, OEM/ODM | Rare |
Tips for Buyers: Verify COA, test stability in final formulation, check supplier traceability. AIHerba provides both documentation and R&D support.
13. FAQ (6 Key Questions)
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Is this Purple Yam Powder non-GMO?
Yes, AIHerba® only sources non-GMO tubers. -
What industries use this powder?
Food & beverage, dietary supplements, cosmetics, and personal care. -
What is the shelf life?
24 months under proper storage conditions. -
Can I get a sample before bulk purchase?
Yes, 50–200 g samples are available. -
What certifications are provided?
GMP, ISO, HACCP, and COA for each batch. -
How should it be stored?
In a cool, dry place away from direct sunlight and moisture.
14. References & Regulatory Sources
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PubMed – Anthocyanins in Purple Sweet Potato: https://pubmed.ncbi.nlm.nih.gov/
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FDA – GRAS Status for Color Additives: https://www.fda.gov/food/food-additives-petitions/color-additives
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NIH – Dietary Supplement Ingredient Database: https://dsid.nlm.nih.gov/
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ISO Standards for Plant Extracts: ISO 9001:2015 & HACCP Guidelines
15. Contact & Brand Assurance
AIHerba® | China Natural Plant Extracts Supplier & OEM Factory
Shaanxi Zhonghong Investment Technology Co., Ltd. – GMP-certified manufacturer with 28+ years of experience
📧 sales@aiherba.com | info@aiherba.com | liaodaohai@gmail.com
🌐 www.aiherba.com
Consistent high-quality supply, technical support, and traceable production ensure confidence for B2B buyers worldwide.





