Import 5%-20% Flavonoids Propolis Extract Purity — Buy in Bulk from Supplier in China

This propolis extract is standardised to contain 5% to 20% total flavonoids by spectrophotometric assay, expressed typically as quercetin or rutin equivalents. The raw material is collected from Apis mellifera honeybee colonies, then extracted using ethanol-water or propylene glycol solvents to concentrate the bioactive fraction. The resulting product is a brown to dark-brown viscous liquid or powder, depending on carrier and standardisation level, with characteristic aromatic resinous odour. Colour intensity and consistency vary with geographic origin of propolis, which in China derives predominantly from poplar, willow, and birch botanical sources.

Flavonoid content is the primary quality marker, though total phenolics, caffeic acid phenethyl ester (CAPE) content, and residual wax levels also differentiate grades. Standard extraction yields 30-60% propolis resin from raw material; further refinement removes bee wax, pollen, and wood debris. The 5-20% flavonoid range represents semi-refined to refined grades, with higher percentages indicating less dilution with excipient. Typical moisture content is below 5% for powder forms and 15-25% for liquid glycerited extracts. pH ranges from 4.0 to 6.0 for aqueous preparations. Storage stability depends on antioxidant content, with flavonoids themselves acting as primary oxidation inhibitors.

Applications span dietary supplement capsules and tablets, functional food fortification, cosmetic creams and serums, and veterinary health products. The extract's antimicrobial and anti-inflammatory properties drive demand from manufacturers of immune-support formulations and natural preservative systems. Import buyers should confirm whether material is food-grade, cosmetic-grade, or pharmaceutical-grade, as extraction solvent and heavy metal limits differ accordingly. Standard packaging is food-grade HDPE drums or aluminium vacuum pouches with nitrogen flush, though the source does not confirm Henan Super-sweet's specific offering.

Henan Super-sweet Biotechnology Co., Ltd is based in Henan Province, central China, a region with significant apiculture activity and established supply chains for bee products including propolis, royal jelly, and pollen extracts. The company holds imported supplier tier and harbour trust tier classification. The listing shows a 0.00% response rate with zero average response hours, indicating no platform-mediated buyer communication recorded at data capture. No factory address, establishment year, production capacity, or employee count is provided in the source material.

The supplier profile does not confirm GMP, HACCP, ISO 22000, or organic certification. The source description mentions ISO and FDA certification, though buyers should independently verify certificate numbers, scope, and validity dates, as these claims are not substantiated with documentation in the listing. Henan Province hosts numerous bee product processors, so buyers should distinguish whether this company operates extraction facilities or trades bulk extract from third-party manufacturers. No client references, export markets, or turnover figures are disclosed.