Red Clover Extract
2.Specification: Flavonid 50% HPLC
3.Europe Warehouse
4.Appearance: Orange Yellow Powder
5.CAS NO: 85085-25-2
6.Main Market: European, North America, Asia, Russia, South Korea.
7.Packing Specification: 25kg/drum, 27 drums/tray
8.Delivery: 3-7 Working Days
9.Certification: CGMP,Kosher,Halal,BRC,Organic,ISO9001,ISO22000 etc
Premium Red Clover Extract Manufacturer | High-Potency Isoflavone Solutions for Health & Wellness
Shaanxi Hongda Phytochemistry is a leading manufacturer and supplier of Red Clover Extract, specializing in delivering high-quality botanical ingredients backed by over two decades of industry expertise. Our laboratory provides standardised extracts from selected red clover roots with an isoflavone concentration up to 50% as determined by HPLC. We guarantee every batch produced complies with rigorous international quality standards with an annual output of 3,000 tonnes, cGMP certified manufacturing lines, and a 100,000 level purification workshop. With our strategic warehouse across Europe we can deliver quickly within 3-7 working days and provide you solid supply chain solutions. We are certified by HALAL, KOSHER, ISO22000, ISO9001, FSSC22000 and ORGANIC to provide you the competitive edge of premium quality, consistent potency and extensive technical assistance.

Product Description
Using an innovative water and ethanol extraction process, we extract our product from quality red clover roots. This orange-yellow powder is standardised to 50% flavonoids by HPLC and includes all 4 main isoflavones including Biochanin A and Formononetin. It offers higher bioavailability than soy-based alternatives. This extract has good thermal stability up to 80°C and low moisture content below 5% and retains potency throughout production procedures. The fine powder is passed via 80 mesh for optimum mixing properties for capsule, tablet and softgel formulations.
Third Party Test Report
Quality verification across the board: We work with SGS and Eurofins, globally accredited labs, to undertake thorough third-party testing on each batch of manufacturing. These independent examinations check the correctness of isoflavone potency, ensure the absence of pesticide residues within EU limits, guarantee heavy metal compliance (Lead <3ppm, Arsenic <2ppm), and certify microbiological safety to USP requirements.
Standardised Testing Policies: Our testing is based on HPLC-DAD technology calibrated to aglycone standards, which permits accurate isoflavone quantification and uniformity of measurement across various laboratory settings, removing the frequent inconsistencies associated with UV spectrophotometry approaches.
COA Of Red Clover Extract
|
Item |
Specification |
Test result |
|
Appearance |
Brown powder |
Conforms |
|
Odor |
Characteristic |
Conforms |
|
Taste |
Characteristic |
Conforms |
|
Particle Size |
80 Mesh |
Conforms |
|
Loss on Drying |
≤5.0% |
3.9% |
|
Ash |
≤5.0% |
3.6% |
|
Heavy metals |
NMT 10ppm |
Conforms |
|
Arsenic |
NMT 2ppm |
Conforms |
|
Lead |
NMT 2ppm |
Conforms |
|
Cadmium |
NMT 2ppm |
Conforms |
|
Mercury |
NMT 2ppm |
Conforms |
|
GMO Status |
GMO Free |
Conforms |
|
Total Plate Count |
10,000cfu/g Max |
Conforms |
|
Yeast & Mold |
1,000cfu/g Max |
Conforms |
|
E.Coli |
Negative |
Negative |
|
Salmonella |
Negative |
Negative |
Red Clover Extract Advantages
Superior Isoflavone Profile: Unlike soy extracts that are just rich in Daidzein and Genistein, our extract is rich in all four bioactive isoflavones. This provides full phytoestrogenic support and is perfect for soy-free formulation needs.
Unparalleled Processing Stability The extract is temperature resistant to 80°C and pH-stable from 3.0 to 7.0. It retains its full potency throughout high-pressure encapsulation, tableting compression and acidified feed inclusion procedures.
Extended Shelf Life: Our product has a moisture content less than 5% and is packaged with a proprietary double-sealed technique. This ensures 24-36 months stability, enabling you to reduce inventory risks and better manage your long-term supply.
Clean Label Compliance: Water-ethanol extraction with full solvent recovery results in residual ethanol levels well below the limits of USP Class 3, fulfilling clean label requirements and regulatory standards in worldwide markets.

Red Clover Extract Application
Menopausal Health Formulations Our extract is used in many dietary supplements for the alleviation of vasomotor symptoms, and is an ingredient in hormone balancing formulations in softgel and tablet forms, providing consistent effectiveness in therapeutic strength doses.
High-Performance Dermaceuticals The extract is a potent ingredient in anti-aging serum and topical preparations, promoting collagen production and enhancing skin density. It shows good compatibility with lipid emulsion systems for quality skincare formulations.
Functional Nutrition Solutions: used in high-value animal supplements for equestrian and cattle markets to promote reproductive health and preservation of bone density, with resistance to feed acidity ensuring accurate dose administration.
Production Process
Step 1 – Raw Material Selection and Preparation: Premium red clover roots are subjected to rigorous botanical identification and contaminant screening. Result: Only materials that fulfil pharmaceutical-grade purity criteria go into manufacturing. Quality is built in the beginning.
Step 2 – Water-Ethanol Binary Extraction: Cleaned materials are extracted at regulated temperature using optimised solvent ratios. Result: Maximum isoflavone recovery maintaining molecular integrity and bioactivity.
Step 3 – Multi-Stage Filtration and Concentration: The extract is filtered to a fine degree and then vacuum concentrated at regulated temperatures of less than 60°C. Result: > 99.5% solvent recovery, with concentration of active chemicals matching target specifications.
Step 4 – Spray drying and micronization: The extract is concentrated, spray dried under nitrogen protection and milled to 80 mesh homogeneity. Free-flowing powder with optimum particle dispersion for direct tableting and encapsulation.
Step 5 – Quality tests and Packaging: The finished product is tested for full HPLC and microbial tests and then double sealed in HDPE barrels with nitrogen flushing. Result: Guarantyd strength, purity and prolonged stability for worldwide distribution.

Product package

OEM/ODM Service
Custom Formulation Development Our professor-level R&D team partners with you to create custom mixes of Red Clover Extract with complimentary botanicals, vitamins and minerals for your desired market positioning.
Flexible Dosage Form Manufacturing We provide comprehensive turnkey solutions for softgel encapsulation, tablet compression, hard capsule filling and premixed powder sachets to help you get goods to market fast – ready for sale.
Private Label Packaging Services: From bulk drums to retail-ready bottles with bespoke labelling, we provide complete packaging services to match your brand image and regulatory standards in several markets.
Documentation Support for Regulatory: Our quality team will supply you with full technical dossiers comprising specifications, stability studies, allergy declarations and certificates of analysis to facilitate your product registration procedures.
Why Choose Us
Shaanxi Hongda has been combining traditional knowledge with current pharmaceutical production standards since 2001, with over 23 years of experience in botanical extraction. Our 20,000m^2 building includes China’s top SGS standardisation laboratory with 20+ professor-level researchers. We retain critical European stock to provide fast order processing and our diverse 3,000 square metre warehouse infrastructure ensures a continued supply. We are a national high-tech firm protected by several patent technologies. We provide not only goods, but also entire partnership solutions supported by transparent quality procedures and quick technical assistance.

Our Exhibitions

FAQ
Q: How does your extract vary from soy based isoflavone products?
A: Our product has all four main isoflavones such Biochanin A and Formononetin, but soy is limited to Daidzein and Genistein. This makes it suitable for soy-free formulations and may give possibly increased bioactivity.
Q: What storage conditions prevent powder caking?
A: Store in double-sealed containers at temperatures below 25°C with relative humidity under 60%. Adding desiccant packets during manufacturing steps exposed to ambient air effectively prevents moisture absorption.
Q: Can this be used in clear beverage formulations?
A: Standard powder grades precipitate in clear liquids. For transparent beverages, we recommend our specialized nano-emulsified version that maintains clarity while delivering full isoflavone benefits.
Q: Why might different labs report varying isoflavone levels?
A: Discrepancies typically arise from methodology differences between UV and HPLC testing or reference standard selection. We exclusively use HPLC with aglycone calibration for maximum accuracy and international consistency.
Q: What is your minimum order quantity and lead time?
A: Our standard MOQ is 25kg with 3-7 working days delivery from our European warehouse. For custom specifications or larger volumes, our China facility accommodates orders from 100kg with 15-20 days production scheduling.
Contact Us
Ready to elevate your product formulations with premium Red Clover Extract? Our technical sales team is standing by to discuss your specific requirements and provide customized solutions.
Email: duke@hongdaherb.com















