Overview
Kaempferol-3 is a glycosidic derivative of kaempferol, a naturally occurring flavonoid found in plants like tea, broccoli, and Ginkgo biloba. It is synthesized or extracted for its enhanced bioavailability compared to its aglycone form. The compound is valued in B2B markets for its therapeutic and functional properties, particularly in nutraceutical and cosmetic industries. Research highlights its role in modulating oxidative stress and inflammation pathways, making it a candidate for chronic disease management. Commercial production typically involves enzymatic glycosylation or plant extraction, with quality standards governed by pharmacopeias (e.g., USP, EP).
Physical and Chemical Properties
Kaempferol-3 derivatives exhibit stability under acidic conditions but may degrade under prolonged UV exposure or high temperatures. The glycoside moiety (e.g., glucose or rhamnose) influences solubility; for instance, kaempferol-3-glucoside dissolves readily in dimethyl sulfoxide (DMSO) but has limited water solubility. Spectroscopic characterization includes UV-Vis absorption peaks at 265 nm and 365 nm, typical for flavonoids. Mass spectrometry (MS) and nuclear magnetic resonance (NMR) are used for structural confirmation. Purity is commonly assessed via high-performance liquid chromatography (HPLC), with industry benchmarks requiring ≥95% purity for pharmaceutical use.
Main Applications
In pharmaceuticals, kaempferol-3 is studied for its cardioprotective and neuroprotective effects, often formulated into tablets or capsules. Nutraceutical companies incorporate it into antioxidant blends or immune-support supplements, leveraging its ability to scavenge free radicals. The cosmetic industry utilizes kaempferol-3 in anti-aging serums and sunscreens due to its UV absorption and collagen synthesis promotion. Emerging applications include functional foods, where it is microencapsulated to mask bitterness and improve stability in beverages.
Safety and Storage
Kaempferol-3 is classified as low-toxicity, with LD50 values exceeding 2,000 mg/kg in rodent studies. However, occupational exposure to powder should be minimized using PPE (e.g., masks, gloves) to prevent respiratory or dermal irritation. Long-term storage requires protection from humidity and oxygen. Vacuum-sealed bags with desiccants are recommended, ideally at –20°C for multi-year stability. Bulk shipments often use amber glass bottles or aluminum-lined pouches to prevent photodegradation.
B2B Procurement Guide
Buyers should prioritize suppliers who provide comprehensive COAs (Certificates of Analysis), including residual solvent tests and heavy metal screenings. Key metrics are purity (≥95%), microbial counts (<100 CFU/g), and endotoxin levels for injectable-grade material. MOQs (Minimum Order Quantities) vary: lab-scale purchases (1–10 g) cost $50–200/g, while bulk orders (1 kg+) may reduce prices to $20–80/g. Consider regional regulations; for example, EU buyers require REACH compliance documentation. Sample testing via third-party labs is advisable for new vendors.
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