Daidzein Powder
Description
Daidzein Powder – 98% High-Purity Phytoestrogen Solution for Professional Formulation
Xi'an Le-Nutra Ingredients Inc offers pharmaceutical-grade Daidzein Powder with 98% minimum purity verified by HPLC, extracted from premium soybean germ using advanced low-temperature extraction and recrystallization purification technology. This isoflavone aglycone of high purity has enhanced bioavailability compared to glycoside forms since it does not need enzymatic hydrolysis in the gut and is directly absorbed into the systemic circulation. With 6 multi-functional lines and a 60,000㎡ GMP-certified production facility with 3,000-ton capacity per year, we guarantee batch-to-batch consistency, tight heavy metal control (Pb <0.5 ppm) and microbiological safety (TPC ≤250 CFU/g). Our product meets the needs of international nutraceutical, pharmaceutical and functional food manufacturers looking for standardised phytoestrogen ingredients for menopause treatment, bone health and anti-aging applications. We have 14+ years of botanical extraction expertise and 98% on-time delivery, supported by 30+ days safety stock.

What Makes High-Purity Daidzein Powder Essential for Targeted Health Solutions?
Product is the aglycone form of the soy isoflavone daidzin, chemical name 7-Hydroxy-3-(4-hydroxyphenyl)-4H-1-benzopyran-4-one (CAS No: 486-66-8). This isolated form eliminates the variation in dose and speeds intestinal absorption compared with crude soy extracts, which include mixed glycosides.
The off-white crystalline powder has excellent thermal stability with melting point of 315-323 o C which is suitable for high temperature processes such as tablet compression and extrusion. It has a specific binding affinity for Oestrogen Receptor Beta, permitting precise hormonal control without the proliferative concerns associated with synthetic oestrogens.
This 98% purity standard allows formulators interested in menopausal vasomotor symptoms or stimulation of osteoblastic activity to provide predictable pharmacokinetics and reproducible clinical outcomes from batch-to-batch of manufacture.
Technical Specifications and Quality Parameters
| Parameter | Specification |
|---|---|
| Product Name | Daidzein 98% |
| CAS Number | 486-66-8 |
| Source | Soybean germ extraction |
| Active Ingredient | Daidzein (Aglycone form) |
| Appearance | Off-white crystalline powder |
| Assay (HPLC) | ≥98% |
| Molecular Formula | C₁₅H₁₀O₄ |
| Molecular Weight | 254.24 g/mol |
| Solubility | Soluble in ethanol, slightly in hot water |
| Loss on Drying | ≤0.5% |
| Total Ash | ≤0.1% |
| Heavy Metals | Pb <0.5 ppm, As <1.0 ppm, Cd <1.0 ppm, Hg <0.1 ppm |
| Microbiology | TPC ≤250 CFU/g; Yeast & Mold negative; E.coli & Salmonella negative |
| Storage Conditions | Cool, dry, sealed environment away from light |
| Shelf Life | 24 months |
Key Functional Benefits for Product Development
Our pharmaceutical grade ingredient provides many competitive benefits for your products. Natural hormone balancing capabilities assist in regulating female endocrine function, without the need for synthetic intervention.
In clinical trials, it has been shown to reduce hot flashes, nite sweats and mood swings during menopause transitions. The chemical has strong osteoprotective properties, increasing calcium absorption and lowering signs of bone resorption.
Its potent antioxidant properties fight free radicals at the cellular level, therefore protecting from ageing associated oxidative stress. Added to skincare formulas, it helps to combat the skin dryness and loss of suppleness due to hormonal decline.
The aglycone molecule is rapidly converted to equol in the gut microbiome, leading to better therapeutic results in people with the proper bacterial populations.
Advanced Production Process and Quality Assurance
Our patented extraction procedure starts by procuring certified non-GMO soybean germ through established organic farm connections. Extraction at low temperature guarantees maximum yield efficiency without compromising the molecular integrity of heat-sensitive isoflavones.
Multi-stage recrystallisation purification removes residual glycosides, proteins and colour impurities to give a consistent 98% purity. Advanced HPLC analysis confirms the active content and tests for genistein cross-contamination, which is kept below 0.5%.
The production environment meets ISO 22000 and GMP requirements and is equipped with Class 100,000 cleanroom standards. Each batch undergoes rigorous testing for identity confirmation, heavy metal screening, pesticide residue analysis and microbial enumeration prior to distribution.

We have a competent QC lab with HPLC, UV-Vis spectrophotometry and atomic absorption spectrometry for real-time quality monitoring. Complete batch documentation and third party COA support provide complete traceability for regulatory submissions.
Application Scenarios Across Health Industries
Phytoestrogens. The 40-80 mg daily doses in standardised forms provide supplements for care of menopause. It can be used in osteoporosis prevention protocols because of the synergy with calcium and vitamin D of your bone health goods.
Selective oestrogen receptor modulation is used in Women's endocrine balancing capsules to create a hormonal balance without pharmacological adverse effects. It is an anti-aging functional meal including collagen peptides and antioxidants for complete skin support.
Natural SERM alternative developers in the pharmaceutical industry value the API-grade purity for clinical studies. Cosmetic formulators developing hormonal skincare lines for aged skin demographics.
Daidzein Powder can be formulated into tablets, capsules, softgels, and beverages with a variety of excipients when combined with proper solubilisation technology.

Flexible Supply and Global Partnership Models
Our direct factory strategy reduces distribution markups and through vertical integration provides a steady supply. Minimum order quantities start at 25 kg with volume discounts for contract manufacturing agreements.
Our strategic warehouse locations guarantee stock availability and delivery within 3-7 working days on urgent projects. We provide FOB, CIF and DDP terms to support international logistics in the North American, European and Southeast Asian markets.
Total OEM/ODM services include formula optimisation, private labelling and custom packaging from 1kg foil bags to 25kg fibre drums Our R&D team provides technical consulting services for solubility augmentation, stability testing, and selection of dosage forms.
Payment terms T/T 100%,Alibaba Trade Assurance,Western Union etc. Standard with all shipments, complete documentation including COA, MSDS, TDS, allergies declarations and non-GMO certificates.
FAQ
Q: What is the difference between Daidzein and Daidzin in supplement formulation?
A: Daidzein is the active aglycone and is absorbed without the need for stomach hydrolysis therefore has a more rapid pharmacokinetic start than the glycoside Daidzin. This makes it more appropriate for high performance solutions for menopause and bone health.
Q: What are the solutions to water solubility problems for formulators?
A: Because it is hydrophobic, a stable suspension that will not sediment can only be achieved with nano-emulsion technology, cyclodextrin inclusion complexes or particles that have been micronised to less than 10 microns in a liquid application.
Q: How does source material influence product positioning?
A: We define the extraction of soybean germs, suitable for conventional phytoestrogen complexes. Soy-free allergy claims can be made with Kudzu-derived substitutes. Both meet the same requirement for HPLC purity.
Q: What are the storage conditions to prevent degradation?
A: Store in airtight, light-resistant containers at 15-25°C. While thermally stable to 315°C, the powder requires protection from intense UV exposure and humidity to maintain 24-month validated shelf life.
Q: Is cross-contamination with Genistein controlled?
A: Our purification process reduces Genistein content to below 0.5-1.0%, ensuring the specific therapeutic effects of the product remain isolated without interference from other isoflavones.

Partner With Le-Nutra for Reliable Ingredient Solutions
Ready to elevate your product line with pharmaceutical-grade Daidzein Powder? Contact us at enquiry@lenutra.com to discuss your specific requirements.
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