Pueraria lobata

Buyers should prioritize the Puerarin content, which is the primary active isoflavone; high-quality extracts typically range from 40% to 98% purity. Additionally, distinguish between Pueraria lobata (Wild Kudzu) and Pueraria thomsonii (Thai Kudzu), as the former generally has higher medicinal value. Ensure the moisture content is below 12% for dried roots to prevent mold during transit.

For food and supplement grades, suppliers must provide HACCP or ISO 22000 certifications. If the product is intended for the US market, FDA registration and GRAS (Generally Recognized as Safe) status are critical. For the EU, compliance with Novel Food Regulations and PAH (Polycyclic Aromatic Hydrocarbons) limits is mandatory to pass customs.

Request a Certificate of Analysis (COA) from a third-party lab like SGS or Eurofins. Key parameters to check include heavy metal limits (Lead <3.0mg/kg, Arsenic <2.0mg/kg) and microbiological limits (Total Plate Count <1000cfu/g). For bulk powder, ask for HPLC (High-Performance Liquid Chromatography) test results to confirm the chemical fingerprint.

In the pharmaceutical industry, it is used for cardiovascular health supplements. In the cosmetic sector, it is valued for its anti-aging and skin-whitening properties due to its high isoflavone content. In the food and beverage industry, it is processed into instant powders or thickeners due to its high starch content and neutral flavor profile.

The biggest risk is adulteration with cheaper starches or synthetic fillers. To mitigate this, use Made-in-China.com's 'Audited Supplier' reports to verify the manufacturer's production capacity. Another risk is pesticide residues; ensure the batch meets the Maximum Residue Limits (MRLs) of your destination country.

Prices for Pueraria Lobata fluctuate based on harvest seasons (typically winter). Negotiate for tiered pricing based on volume; for example, a 15-20% discount is common when moving from 100kg to 1,000kg. For new buyers, request a paid sample (100g-500g) before committing to a full MOQ to verify solubility and color.

Pueraria Lobata powder is hygroscopic (absorbs moisture). Ensure the supplier uses double-layer PE bags inside fiber drums with desiccant packs. For large sea freight orders, specify 'Top of Stack' loading to avoid crushing drums, and ensure the container is ventilated and dry to prevent fermentation.

Always utilize secure payment terms such as Letters of Credit (L/C) for large volumes or Escrow services provided by reputable B2B platforms. Avoid direct wire transfers to private accounts. Conduct a pre-shipment inspection (PSI) to ensure the goods loaded match the samples approved during the negotiation phase.