Yam Extract Powder

  - Food & Supplement Grade Chinese Yam Extract Powder | GMP & Organic Certified Manufacturer

Yam Extract Powder, also known as Chinese Yam Extract, is a standardized botanical ingredient derived from the dried tubers of Dioscorea opposita Thunb. Through controlled extraction and purification processes, this ingredient concentrates naturally occurring compounds such as Diosgenin and yam polysaccharides, making it suitable for use in dietary supplements, functional foods, pharmaceuticals, and cosmetic formulations.

Manufactured by Shaanxi Jiuyuan Biotech under GMP-compliant conditions, our Yam Extract Powder is designed for formulation stability, batch-to-batch consistency, and global regulatory compliance, meeting the needs of professional ingredient buyers and brand owners.

Botanical Information

• Botanical Name: Dioscorea opposita Thunb.
• Plant Part Used: Dried tuber (rhizome)
• Common Names: Chinese Yam Extract, Yam Powder, Yam Polysaccharide
• Appearance: Light brownish-yellow to off-white fine powder

1. ✅ Standardized Active Ingredients: Precise Empowerment

• Core Component: We offer standardized specifications with high content of Diosgenin (e.g., 1%, 10%, 20%), ensuring stable efficacy and product potency.
• Quality Assurance: Diosgenin, a steroidal saponin, serves as a natural endocrine precursor, offering scientific support for maintaining hormone balance and promoting overall health.

2. 🌿 Authentic Sourcing, Exceptional Quality

• Raw Material Source: We strictly select authentic and high-quality Dioscorea opposita rhizomes, such as those from the renowned Huai Yam growing regions, guaranteeing their natural bioactivity and nutritional value.
• Safety Commitment: Strict testing for pesticide residues and heavy metals ensures the purity and safety of our raw materials, complying with global food and health product regulations.

3. 🧪 Low-Temperature & High-Efficiency Extraction for Enhanced Purity

• We employ low-temperature, high-efficiency extraction and precise separation & purification technologies to maximize the preservation of active compounds like Diosgenin.
• Features: Our extract powder boasts high purity, minimal impurities, and excellent solubility and dispersibility, making it suitable for high-end health supplement formulations.

Full Analytical Profile

Yam extract specifications are typically determined by the extraction process and target compound content. Common specifications include:

• Extraction Ratio: 10:1, 20:1, 50:1, etc.
• Diosgenin: 6%, 10%, 16%, 20%, 98%, etc.
• Chinese Yam Polysaccharide: ≥10.0%.
• Storage and Packaging:
• Storage Conditions: Store in a cool, dry place, away from light and high temperatures.
• Packaging: Generally 25 kg/barrel, with double-layer plastic bags inside and a cardboard barrel outside.
• Shelf Life: Two years.

For brands seeking consistent active compound control across different botanicals, standardized extraction plays a critical role in formulation stability.
 

Key Bioactive Components

• Diosgenin

A naturally occurring steroidal saponin widely studied and used as a botanical precursor in nutritional and pharmaceutical research.

• Yam Polysaccharides

Complex carbohydrates commonly incorporated into immune-support and vitality-oriented formulations.

Testing Methods

• Diosgenin: HPLC
• Polysaccharides: UV-Vis Spectrophotometry
• Routine Tests: Moisture, ash, heavy metals, pesticide residues, microbiological limits

Each batch is supplied with a Certificate of Analysis (COA) upon request.

Our Yam Extract Powder is produced through a scientifically controlled, low-temperature extraction process to preserve active compounds while ensuring purity and safety.

• Raw Material Selection

Authenticated Dioscorea opposita tubers sourced from stable, traceable supply regions.

• Extraction

Water or food-grade ethanol extraction under controlled temperature conditions.

• Filtration & Concentration

Removal of insoluble matter followed by vacuum concentration to minimize thermal degradation.

• Drying

Spray drying or vacuum drying to obtain a stable, free-flowing powder.

• Milling & Sieving

Uniform particle size control for formulation compatibility.

• Sterilization & Packaging

Final microbial control and sealed food-grade packaging.

Product Characteristics

• High purity with low impurity profile
• Good solubility and dispersibility
• Suitable for capsule, tablet, powder, and liquid formulations
• Stable under standard storage conditions

Formulation compatibility notes:

• Water-soluble grades available for beverage and liquid supplement applications
• Dispersible powder format available for stick-pack and sachet formats
• Carrier options: maltodextrin, microcrystalline cellulose, silicon dioxide

Not all yam extracts on the market are equivalent. Here's how our product compares against common alternatives buyers encounter.

The difference between a credible manufacturer and a commodity broker shows up in your audit results, your retail partner reviews, and your customer returns - not in the initial quote.

Our quality control system operates across every stage of production - not just at final release. Here's how we protect the integrity of every batch.

In-house laboratory capabilities:

• HPLC (High-Performance Liquid Chromatography) - primary assay method for diosgenin quantification
• GC (Gas Chromatography) - residual solvent analysis
• AAS (Atomic Absorption Spectroscopy) - heavy metal screening
• UV-Vis Spectrophotometry - supporting assay verification
• Full microbiology suite - total plate count, yeast, mold, pathogen screening
• Batch traceability: Every batch carries a unique batch number traceable back to the raw material lot, extraction date, operator records, and in-process test results. Full traceability documentation is available on request.

Stability program:

• Accelerated stability testing: 40°C / 75% RH, 6-month protocol
• Long-term stability: 25°C / 60% RH, 24-month protocol
• Diosgenin retention: >95% at end of stated shelf life under recommended storage conditions
• Third-party verification: We support third-party testing by SGS, Eurofins, Intertek, and other accredited laboratories. Split samples are retained for every production batch.

We hold 12 international certifications covering quality management, food safety, organic status, and religious dietary compliance.

Documents available on request:

• Certificate of Analysis (batch-specific, HPLC-verified)
• Material Safety Data Sheet (MSDS/SDS)
• Certificate of Origin
• Allergen Declaration
• GMO-Free Statement
• Heavy Metal Test Report
• Microbiological Test Report
• Stability Data Summary

Annual Production Capacity: Over 6,000 tons

Standard MOQ: Flexible

Pilot-Scale Customization: Available for orders below 500 kg

Customization Options:

• Active compound content
• Extraction ratio
• Particle size
• Application-specific requirements

1. Stable, large-scale manufacturing with consistent quality
2. Standardized active ingredient control
3. Strong regulatory and documentation support
4. Flexible production for both bulk and customized orders
5. Experienced technical and formulation support team

Express Under 100kg, 3-5Days Door-to-door service easy to pick up the goods	By Sea Over300kg, Around 30 Days Port-to-port service professional clearance broker needed	By Air 100kg-1000kg, 5-7Days Airport-to-airport service professional clearance broker needed

• Storage: Keep in a cool, dry, and clean place. Protect from moisture and direct light.
• Bulk Package: 25kg/drum.
• Lead Time: 7 days after your order.
• Shelf Life: 2 years.
• Remark: Customized specifications can also be achieved.

Who Buys Yam Extract Powder?

Our customers include:

• Dietary supplement brands formulating women's health, hormonal support, and menopause products
• Pharmaceutical manufacturers using diosgenin as a steroid hormone synthesis intermediate
• Cosmetic formulators incorporating diosgenin-rich extracts into anti-aging and skin-conditioning products
• Contract manufacturers producing private-label supplement lines
• Distributors supplying ingredient portfolios to regional nutraceutical markets

How to Choose the Right Grade

• 6%–20% diosgenin: Standard nutraceutical and cosmetic applications. Cost-effective for high-volume supplement formulations.
• 40% diosgenin: Suitable for high-potency supplement applications and pharmaceutical intermediate use where lower purity is acceptable.
• 98% diosgenin: Pharmaceutical API synthesis, reference standard applications, and research-grade use. Requires cold-chain handling and specialized storage.

Sampling Process

We offer paid samples (typically 100–500 g) for qualified buyers. Samples ship with a full batch-specific COA, MSDS, and technical data sheet. Lead time for standard grades is 3–5 business days from sample confirmation.

Ordering Process

1. Submit your inquiry with target grade, volume, and destination market
2. Receive a technical data sheet and pricing within 24 hours
3. Request a sample for internal QC verification
4. Confirm order with purchase order and shipping details
5. Receive batch-specific COA before shipment
6. Ongoing technical support from our R&D team post-delivery

Q1: What is the difference between wild yam extract and Chinese yam extract?

Both terms refer to extracts from Dioscorea species, but the botanical source differs. "Wild yam" typically refers to Dioscorea villosa, native to North America and historically used in Western herbal medicine. "Chinese yam" refers to Dioscorea opposita (syn. Dioscorea polystachya), a species with a long history in Traditional Chinese Medicine. Both species contain diosgenin as the primary steroidal sapogenin. We can supply extracts from either species - specify your preferred botanical source when inquiring.

Q2: Can the body convert diosgenin into hormones directly?

This is one of the most common misconceptions in the women's health supplement market. In the laboratory, diosgenin can be chemically converted into progesterone and other steroid hormones through a multi-step synthesis process. However, the human body does not possess the enzymatic machinery to perform this conversion. Diosgenin's documented biological activities - anti-inflammatory, antioxidant, hypolipidemic - operate through separate mechanisms and do not depend on hormonal conversion. Formulators should be careful not to make direct hormonal conversion claims on finished products.

Q3: What assay method do you use to verify diosgenin content?

We use HPLC (High-Performance Liquid Chromatography) as the primary assay method, verified against certified diosgenin reference standards. HPLC provides compound-specific quantification that UV or colorimetric methods cannot match. Every batch COA includes the HPLC chromatogram and reference standard information.

Q4: Is your yam extract powder suitable for pharmaceutical applications?

Our YE-40 and YE-98 grades meet pharmaceutical intermediate specifications and are manufactured under cGMP conditions. For API synthesis applications, we recommend the YE-98 grade, which achieves ≥98% diosgenin purity by HPLC. Full pharmaceutical documentation - including batch records, method validation data, and stability reports - is available for qualified pharmaceutical buyers.

Q5: Do you offer organic-certified yam extract powder?

Yes. We hold both USDA Organic and EU Organic certifications. Organic-certified yam extract powder is available in selected grades. Please specify your organic certification requirement when requesting a quote, as organic grades carry different pricing and lead times from conventional grades.

Q6: What is the recommended dosage range for dietary supplement applications?

Typical dosage ranges in published dietary supplement literature for diosgenin-standardized yam extract are 100–400 mg per day of a 6%–20% extract, providing approximately 6–80 mg diosgenin per daily serving. Exact dosage depends on your target application, finished product format, and the regulatory framework of your target market. We recommend working with a qualified formulation scientist and reviewing applicable regulatory guidelines for your market before finalizing dosage claims.

Q7: What is your minimum order quantity and lead time?

Our standard MOQ is 25 kg for commercial grades. Lead time for standard grades (YE-06, YE-16, YE-20) is 10–15 business days from order confirmation. High-purity grades (YE-40, YE-98) may require 20–25 business days depending on production scheduling. Rush orders and buffer stock arrangements are available for established customers - contact us to discuss your supply chain requirements.

Q8: Can you provide OEM/ODM services for finished supplement products?

Yes. Beyond bulk ingredient supply, we offer full OEM/ODM manufacturing for finished dietary supplement products incorporating yam extract powder - including capsules, tablets, sachets, and stick-packs. We handle formulation development, stability testing, packaging design, and regulatory documentation support. Contact our OEM team for a project assessment.

Jiuyuan Biotech supplies yam extract powder to food manufacturers, supplement brands, and contract formulators across North America, Europe, and the Asia-Pacific region. Our technical team - not a generic sales inbox - handles every inquiry.

Email: info@jiuyuanbio.com

Website: www.jiuyuanbio.com

Request: Sample| Bulk Quote | CoA & Spec Sheet | Custom Carrier Ratio

Standard response time: within 1 business day. Please include your target application and annual volume estimate for the most relevant technical recommendation.