Overview: What Is Kaempferol Powder?
Kaempferol powder is a high-purity flavonoid compound derived from a variety of botanical sources, including the rhizome of Kaempferia galanga L., tea leaves, broccoli, hazelnuts, grapefruit, propolis, and numerous other green plants. As one of the most extensively studied flavonols in the phytochemical landscape, kaempferol (chemical formula C₁₅H₁₀O₆) has garnered significant interest across the nutraceutical, pharmaceutical, and functional food industries due to its broad spectrum of biological activities.
The pure monomer presents as a characteristic yellow crystalline powder with limited water solubility but readily dissolves in hot ethanol, dimethyl sulfoxide (DMSO), ether, and other organic solvents. These physicochemical properties make kaempferol powder a versatile raw material for formulation development in dietary supplements, health food products, cosmetic preparations, and research-grade applications.
At The Extract Factory, we supply food-grade kaempferol powder with a minimum assay of 98%, manufactured under rigorous quality management systems to meet the demands of international buyers, brand owners, and contract manufacturers worldwide.
Botanical Source & Raw Material Origin
Kaempferol is a naturally occurring polyphenolic flavonoid widely distributed across the plant kingdom. Key botanical sources include:
- Kaempferia galanga L. (galangal rhizome) — a primary traditional source
- Tea (Camellia sinensis) — particularly in green and oolong varieties
- Broccoli (Brassica oleracea var. italica)
- Grapefruit (Citrus paradisi)
- Hazelnuts (Corylus avellana)
- Propolis — a bee-derived resinous substance
- Ginkgo biloba, Moringa oleifera, and various other herbal matrices
The selection of raw material source directly influences the extraction yield, impurity profile, and final purity of kaempferol powder. At The Extract Factory, we source premium-grade plant materials from established agricultural regions and apply validated extraction protocols to ensure batch-to-batch consistency.
Extraction & Manufacturing Process
The production of high-purity kaempferol powder involves a multi-stage process designed to maximize yield while preserving the structural integrity of the flavonoid:
- Raw Material Preparation — Dried plant material is milled to a uniform particle size to optimize solvent contact.
- Solvent Extraction — Ethanol or ethanol-water mixtures are typically employed under controlled temperature and time parameters.
- Concentration & Purification — The crude extract undergoes filtration, vacuum concentration, and chromatographic or crystallization steps to isolate kaempferol at ≥98% purity.
- Drying & Milling — The purified compound is spray-dried or vacuum-dried and milled to a fine, homogeneous powder.
- Quality Testing — Every batch is subjected to full analytical verification before release.
Our three dedicated plant extract processing and production bases in Xi'an, Shaanxi Province, China, enable us to maintain a combined annual supply capacity exceeding 500 tonnes of standardized plant extracts, 1,000 tonnes of fruit and vegetable extracts, and 500 tonnes of powdered raw materials — including kaempferol powder.
Product Specifications
| Parameter | Details |
|---|---|
| Product Name | Kaempferol Powder |
| Active Ingredient | Kaempferol |
| Assay (Purity) | ≥ 98% |
| Appearance | Yellow powder |
| Grade | Food Grade |
| Chemical Formula | C₁₅H₁₀O₆ |
| Latin Name (Source) | Kaempferia galanga L. / other botanical sources |
| Extraction Part | Rhizome, leaf, or flower (depending on source) |
| Solubility | Slightly soluble in water; soluble in hot ethanol, DMSO, ether |
| Packaging | 25 kg/drum (double-layer PP bag inside cardboard drum) |
| Storage | Cool, dry place; protect from light and moisture |
| Shelf Life | 24 months (when stored under recommended conditions) |
Physicochemical Properties & Stability
Understanding the physical and chemical behavior of kaempferol powder is essential for formulators and procurement teams:
- Color: Yellow to light yellow crystalline powder
- Odor: Characteristic, mild
- Melting Point: Approximately 276–278 °C
- Stability: Stable under normal storage conditions; sensitive to prolonged exposure to strong light, high humidity, and extreme pH
- pH Sensitivity: Kaempferol demonstrates greater stability in mildly acidic to neutral environments; alkaline conditions may accelerate degradation
- Thermal Stability: The compound is relatively heat-stable during standard processing but should be protected from excessive temperatures above 200 °C for extended periods
For formulation compatibility, kaempferol powder integrates well into capsule blends, tablet formulations, powdered drink mixes, and topical preparations when paired with appropriate excipients and stabilizers.
Functional Properties & Bioactivity of Kaempferol
Extensive scientific literature has documented a wide range of biological activities associated with kaempferol. The following summary reflects findings reported in peer-reviewed research and is intended for informational purposes only — not as medical claims.
1. Anticancer Potential
Kaempferol is among the most commonly consumed dietary flavonoids and has been associated in epidemiological studies with reduced cancer risk when consumed regularly as part of a plant-rich diet. Research has indicated that high dietary intake of kaempferol may:
- Reduce the recurrence of advanced colorectal adenomas
- Significantly lower the risk of pancreatic cancer compared with other common dietary flavonoids
- Inhibit hepatocyte growth factor (HGF) and its receptor tyrosine protein kinase, pathways implicated in the growth and metastasis of childhood medulloblastoma
These findings have positioned kaempferol as a compound of interest in nutraceutical product development targeting cellular health and preventive wellness.
2. Antimicrobial & Anti-Inflammatory Activity
Published studies have demonstrated that kaempferol exhibits broad-spectrum antimicrobial effects:
- Antibacterial: Effective against methicillin-resistant Staphylococcus aureus (MRSA), with inhibition zones reported up to 8.5 mm, as well as activity against Vibrio cholerae and Enterococcus faecalis
- Antiviral: Concentration-dependent inhibition observed at non-cytotoxic levels in in vitro models
- Anti-inflammatory: Primarily mediated through suppression of pro-inflammatory cytokine expression and modulation of inflammatory signaling pathways (e.g., NF-κB, MAPK)
These properties support the use of kaempferol powder in immune-support supplements and functional food products targeting inflammation management.
3. Cardiovascular & Metabolic Support
Research into kaempferol's role in metabolic health has revealed promising mechanisms:
- Inhibition of copper ion-induced oxidation of low-density lipoprotein (LDL) to oxidized LDL (ox-LDL), a key step in atherogenesis
- Reduction of CD36 protein expression on THP-1 macrophage surfaces, thereby limiting cellular uptake of ox-LDL
- Potential support in blood sugar regulation pathways, contributing to interest in diabetes-preventive formulations
Atherosclerosis, recognized as a chronic inflammatory condition of the vascular wall, represents a major area where kaempferol's antioxidant and anti-inflammatory properties converge.
Industry Applications
Kaempferol powder serves as a high-value raw material across multiple sectors:
| Industry | Application Examples |
|---|---|
| Dietary Supplements | Antioxidant capsules, immune support formulas, cellular health blends |
| Functional Foods & Beverages | Fortified beverages, health bars, powdered drink mixes |
| Nutraceuticals | Cardiovascular support products, anti-inflammatory formulations |
| Cosmetics & Personal Care | Anti-aging serums, skin-brightening products, scalp care formulations |
| Pharmaceutical Research | Lead compound for drug discovery, in vitro bioactivity studies |
| Animal Nutrition | Feed additives for antioxidant and anti-inflammatory support |
| Food Additives | Natural colorant and functional ingredient in processed foods |
Additionally, kaempferol has been documented in scientific contexts as an inhibitor of osteoclast-mediated bone resorption and as a flavonol capable of inducing nuclear DNA degradation accompanied by lipid peroxidation in transformed cell lines. It has also shown activity in inhibiting topoisomerase I-catalyzed DNA religation — mechanisms of interest in pharmacological research.
Quality Assurance & Certifications
At The Extract Factory, product quality is non-negotiable. Our quality management framework includes:
- ISO 9001 Certification — Ensuring consistent manufacturing and process control
- Halal & Kosher Certification — Supporting global market access for food and supplement applications
- In-House & Third-Party Testing — Every batch undergoes HPLC assay verification, heavy metal screening, microbial testing, pesticide residue analysis, and residual solvent testing
- Full Traceability — From raw material sourcing through final packaging, every step is documented for complete supply chain transparency
- Pre-Shipment Inspection — Final quality check prior to dispatch to eliminate any risk of non-conforming product reaching the customer
With nearly a decade of dedicated experience in the plant extract industry, we have developed mature, validated quality control procedures that meet the expectations of international regulatory bodies and discerning B2B buyers.
Packaging, Shipping & Logistics
We offer flexible packaging and shipping solutions tailored to order volume and destination:
| Cargo Weight | Packaging Configuration | Shipping Method | Estimated Lead Time |
|---|---|---|---|
| 5–50 kg | Below 5 kg: foil bag; 5–25 kg: double-layer PP bag in master carton or cardboard drum | International Express (FedEx / DHL / UPS) | 7–10 business days |
| 100–200 kg | 25 kg/drum: double-layer PP bag inside cardboard drum | Air Freight | 7–10 business days |
| 500+ kg | 25 kg/drum: double-layer PP bag inside cardboard drum | Ocean Freight | 20–45 business days |
All shipments are accompanied by full documentation including Certificate of Analysis (COA), packing list, commercial invoice, and origin certificate as required by destination regulations.
Why Source Kaempferol Powder from The Extract Factory?
The Extract Factory, established in 2015 and headquartered in the Hi-Tech Industrial Zone of Xi'an, Shaanxi Province, China, is a recognized kaempferol powder supplier serving manufacturers, wholesalers, exporters, and retailers across North America, Europe, South Asia, Australia, and Africa.
What sets us apart:
- Scale & Capacity: Three production bases with a combined output exceeding 500 tonnes of plant extracts and 500 tonnes of powdered raw materials annually
- Technical Expertise: A dedicated sales and service team providing end-to-end project support — from initial inquiry through production, shipping, and after-sales follow-up
- Customization: Full OEM and private-label capabilities; we welcome custom specifications, packaging designs, and formulation support
- Competitive Pricing: Direct manufacturer pricing with no intermediaries, ensuring cost efficiency for bulk and repeat orders
- Reliable Supply: Stable raw material sourcing and production scheduling to minimize disruption for long-term supply agreements
Frequently Asked Questions
Can I request a free sample of your kaempferol powder?
Yes — we provide free samples to qualified buyers for evaluation. Please note that shipping costs are borne by the recipient. Contact us with your sample request and shipping address.
What payment methods and terms do you accept?
We support T/T (bank transfer), credit card, Western Union, PayPal, and other internationally recognized payment channels. Payment terms can be negotiated based on order size and customer history.
How do you ensure consistent product quality?
Our nearly 10 years of specialized experience in the plant extract sector has allowed us to build a comprehensive quality control system covering raw material inspection, in-process monitoring, and finished product testing. Every batch undergoes a final pre-shipment verification to guarantee conformity before dispatch.
Do you offer OEM or private-label services?
Absolutely. We accept OEM orders for kaempferol powder and other botanical extracts. Share your specifications with our team, and we will provide competitive pricing and rapid sample turnaround.
How can I get in touch with your team?
Reach us via email at [email protected], or connect through Skype and WhatsApp for real-time communication. We respond promptly to all inquiries.
Get Started with Bulk Kaempferol Powder Today
Whether you are a supplement brand formulating a new antioxidant product, a food manufacturer seeking functional flavonoid ingredients, or a research institution requiring high-purity reference material, The Extract Factory delivers kaempferol powder that meets stringent quality expectations at scale.
Contact us now to discuss your requirements, request a sample, or obtain a customized quotation for your next procurement cycle.
