Soy Isoflavones 20%
Active Ingredient: Soy Isoflavones
Purity Specification: 20%
Country of Origin: China
Testing Method: High-Performance Liquid Chromatography (HPLC)
Appearance: Light yellow to yellow powder
Solubility: Slightly soluble in water, soluble in ethanol and other organic solvents
Related Certifications: ISO9001, GMP, FDA, Kosher, Halal
Trade Terms: EXW, FOB, CFR, CIF, DAP, DDP
Payment Method: Preferably T/T (Telegraphic Transfer)
Transportation Methods: Air Freight, Sea Freight, Railway Transportation
Services Provided: OEM (Original Equipment Manufacturing) / ODM (Original Design Manufacturing)
Delivery Status: Sufficient stock, safe and fast delivery
Packaging Specifications: 10 kg, 20 kg
Minimum Order Quantity (MOQ): 1 kg
- Product Description
Soy Isoflavones 20% Plant Extract Powder — Standardized Phytoestrogen Ingredient for B2B Formulation
Soy Isoflavones 20% is a typical botanical extract of non-GMO soybeans by contemporary plant extraction technology. It is a light yellow to yellow powder with 20% active isoflavones validated by HPLC. It contains important bioactive substances such as daidzin, daidzein, genistin, and genistein, which are typical phytoestrogen polyphenols with wide functional applications. This product is manufactured in China by Shaanxi Herbcosher Phychemistry Co., Ltd. and is certified by ISO9001, GMP, FDA, Kosher and Halal. It is designed for commercial-scale product development with low MOQ of 1kg, flexible OEM/ODM services and enough stock for quick delivery.

What Is Soy Isoflavones 20% Extract?
Soy isoflavones are natural polyphenolic chemicals mostly found in soybeans. They are members of the isoflavone subgroup of phytoestrogens, plant-derived chemicals that interact with oestrogen receptors in the human body at the level of the receptor.
The 20% specification refers to a standardised extract of medium concentration, where 20% of the powder by weight contains all the active constituents of total Isoflavone. This is a standardised complex of the entire plant, maintaining the natural isoflavone profile (both glycosides and aglycones) and not a high-purity isolated substance.
The naturally occurring bound forms are the glycoside forms (daidzin, genistin), while aglycone forms (daidzein, genistein) have better and faster bioavailability. Therefore, the isoflavone profile is key for formulators targeting certain health objectives.
Technical Specifications
| Parameter | Details |
|---|---|
| Active Ingredient | Soy Isoflavones |
| Purity Specification | 20% |
| Appearance | Light yellow to yellow powder |
| Production Process | Plant Extraction Method |
| Testing Method | HPLC (High-Performance Liquid Chromatography) |
| Solubility | Slightly soluble in water; soluble in ethanol and organic solvents |
| Country of Origin | China |
| Certifications | ISO9001, GMP, FDA, Kosher, Halal |
| MOQ | 1 kg |
| Packaging | 10 kg, 20 kg |
| Trade Terms | EXW, FOB, CFR, CIF, DAP, DDP |
| Payment Method | T/T (Telegraphic Transfer) preferred |
| Transportation | Air Freight, Sea Freight, Railway |
| Services | OEM / ODM |
| Delivery | Sufficient stock, safe and fast delivery |
Product Characteristics & Quality Advantages
The 20% specification offers a good blend of purity, application compatibility and cost efficiency. It is especially good for large scale formulation development where ingredient cost and batch stability are both important.
Every batch is checked using HPLC to verify the concentration of active compounds and ensure batch-to-batch uniformity. For supplement makers needing to declare specified isoflavone content on products, this standardisation is critical.
It is mildly soluble in water, and completely soluble in ethanol and other organic solvents. Water soluble processing grades employing cyclodextrin inclusion or nano-emulsion technology can be discussed through our ODM customisation service for application in clear liquid form.
The ingredient is thermally stable and can be processed into food and beverage formats such as meal replacement powders and dairy replacements if pasteurisation or light heat treatment is required.
Application Areas
Women's Nutritional Supplements
This is the major commercial application. Soy Isoflavones Capsules and Tablets for Women Menopausal Health and Hormonal Balance Support, Widely Formulated. They are often used with calcium, vitamin D3 or botanical compounds like black cohosh to make multi-ingredient women’s wellness solutions.
Nutritional Products for Bone
Isoflavone compounds are recognised as plant derived nutritional support elements in bone health formulations. They are regularly used into functional food products and supplements designed for the preservation of bone density, generally with the addition of mineral co-factors.
Antioxidants Formulations
Isoflavones have natural antioxidant capabilities and thus can be used to generate a wider range of antioxidant dietary supplements. They can be used as a botanical polyphenol contributor in antioxidant mixtures.
Cosmeceutical and Topical Uses
Genistein, one of the major aglycone components of soy isoflavones, has been researched as a collagen synthesis activator and a metalloproteinase (MMP) inhibitor. Liposomal delivery methods are often employed in topical preparations to promote skin penetration. This offers up potential for anti-aging serums and skincare ingredient systems.
Functional Foods and Beverages
Strengthened dairy substitutes, protein powders and Soy Isoflavones 20% meal replacement products Microencapsulation is advised when the extract is put into products where the bitterness or astringency characteristic of high-phenolic botanical constituents is sensitive.
Formulation Considerations for B2B Buyers
The potential interaction of soy isoflavone powder with mineral salts in the matrix of capsules or tablets should be considered by formulators, as it may result in the degradation of organic polyphenolic compounds over time. Stability testing under the proposed packing and storage circumstances is highly recommended.
Shelf life: Standard botanical extract powders of this sort are generally stable for 24 to 36 months if stored in airtight, double-lined polyethylene bags in a cold environment (< 25°C), away from light and moisture. Herbcosher provides detailed storage and handling instructions with every shipment.
If you are formulating for clear water solubility or targeting consumers with specific gut health considerations – where a higher aglycone bioavailability is preferred – our technical team can advise on suitable specification adjustments or custom processing options through our ODM program.
Why Source From Shaanxi Herbcosher Phychemistry?
Herbcosher has more than 20 years experience in R&D and manufacture of plant extracts. Products are shipped to more than 30 countries including the United States, Canada, Australia and Russia.
Company is FDA, ISO9001, GMP, Kosher and Halal certified, providing buyers regulatory compliance for health food and supplement markets in North America, Europe and beyond.

The 4,000–5,000 m² warehouse and sufficient regular stock mean that large orders are normally delivered within 15 working days. We provide customised OEM and ODM services in powder, liposome and microcapsule forms, with a turnaround time of no more than 15 working days. Third-party testing findings are provided to help support your compliance documents.
The MOQ begins from as little as 1 kg, making it accessible for product development teams at any level. We have trade terms EXW, FOB, CFR, CIF, DAP, DDP which are available to suit your logistics model.

Packaging
| Option | Details |
|---|---|
| Standard Packaging | 10 kg / 20 kg per bag |
| Inner Lining | Double-lined polyethylene bags recommended |
| Custom Packaging | Available via OEM/ODM service |
| Storage Condition | Cool, dry place below 25°C, away from direct sunlight |
FAQ
Q: Is the product considered a high-purity product?
A: No. The product is a medium-concentration standardized botanical extract. It is not a high-purity isolated compound, but rather a whole-plant-derived complex with a controlled active content level, well-suited for commercial supplement and food formulation.
Q: What is the difference between glycoside and aglycone forms in soy isoflavones?
A: Glycosides are the naturally bound isoflavone forms that require gut fermentation for absorption. Aglycones are pre-hydrolyzed during extraction and offer faster, more direct bioavailability. Your formulation goal and target consumer profile should guide the specification choice.
Q: Can this extract be used in clear water-based beverages?
A: Standard soy isoflavone powder has limited water solubility and may cause turbidity. For clear liquid formats, a water-soluble grade using cyclodextrin complexes or nano-emulsion processing is recommended. Contact us to discuss custom options.
Q: What certifications does this product carry?
A: This product is manufactured under ISO9001 and GMP quality management systems, and holds FDA, Kosher, and Halal certifications, supporting market entry across major regulated regions worldwide.
Q: What is the shelf life and recommended storage?
A: The typical shelf life is 24 to 36 months under proper storage conditions — sealed packaging, below 25°C, away from light and moisture. Detailed storage guidance is included with each shipment.
Q: What industries and buyer types is this product most suitable for?
A: It is primarily suited for dietary supplement manufacturers, women's health product brands, functional food and beverage companies, and cosmeceutical formulators sourcing standardized botanical active ingredients for large-scale production.
Contact Us
Reach our technical and sales team at info@herbcosher.com for Soy Isoflavones 20% samples, pricing, or custom formulation support.




