Overview
Polygonum Orientale Extract is derived from the seeds of Polygonum orientale, a plant native to East Asia and traditionally used in Chinese medicine. The extract is valued for its bioactive compounds, including flavonoids (e.g., orientin, vitexin), polyphenols, and polysaccharides, which contribute to its therapeutic effects. Modern research highlights its antioxidant and anti-inflammatory properties, making it a popular ingredient in functional foods, skincare, and herbal supplements. In B2B markets, the extract is typically standardized to flavonoid content (e.g., 10-50%) to ensure consistency. Suppliers often provide it as a fine powder or liquid concentrate, tailored to industrial applications such as capsule formulations, serums, or health beverages.
Physical and Chemical Properties
The extract appears as a hygroscopic brown powder with a characteristic earthy odor. Its solubility in water and ethanol allows for versatile formulation in aqueous or alcohol-based products. Key active components like orientin and vitexin exhibit strong UV absorption, enabling quality control via HPLC analysis. Thermal stability is moderate; prolonged exposure to temperatures above 60°C may degrade bioactive compounds. The extract’s antioxidant capacity, measured by ORAC (Oxygen Radical Absorbance Capacity), ranges from 20,000-50,000 μmol TE/g, depending on concentration and processing methods.
Main Applications
In pharmaceuticals, the extract is used in hepatoprotective formulations due to its ability to mitigate oxidative stress in liver cells. Clinical studies suggest potential in managing non-alcoholic fatty liver disease (NAFLD). Cosmetic applications leverage its anti-aging effects, where it inhibits collagen degradation and neutralizes free radicals in skincare products. The nutraceutical industry incorporates it into dietary supplements for immune support and metabolic health. Emerging research explores its role in gut microbiota modulation, expanding its use in functional foods like probiotic blends or herbal teas.
Safety and Storage
Polygonum Orientale Extract is non-toxic at typical dosages (up to 500 mg/day for adults). However, allergenicity testing is recommended for sensitive populations. Occupational handling requires dust control measures to avoid inhalation risks. Proper storage in airtight containers with desiccants prevents moisture absorption and clumping. Shelf life is typically 24 months when stored below 25°C; refrigerated storage may extend stability. Certificates of Analysis (CoA) should confirm absence of heavy metals (e.g., lead <5 ppm) and microbial contaminants.
B2B Procurement Guide
Buyers should prioritize suppliers with ISO 9001 or cGMP certification to ensure quality consistency. Key procurement criteria include: (1) HPLC-verified flavonoid content, (2) solvent residue reports (e.g., ethanol <5000 ppm), and (3) organic or pesticide-free certifications if required. Bulk pricing often applies to orders above 100 kg, with discounts for long-term contracts. Sample testing for solubility, particle size, and bioactivity is advised before large-scale purchase. Logistics planning should account for the extract’s sensitivity to humidity during transit.
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