Extraction Source: Derived from the seeds of Vitis vinifera L., a plant of the Vitaceae family. Grape seeds are the main by - products in the wine - making process. Through professional extraction techniques, the precious proanthocyanidins are refined from them, turning waste into treasure and enabling them to play important roles in multiple fields. Appearance: Usually presented as a fine powder ranging from purple to red - brown, with a natural and uniform color. When smelled closely, it has a slight, unique and faint grape - like fragrance and no peculiar smell. Product Mesh Size: Generally, more than 98% of the product can smoothly pass through an 80 - mesh sieve, which ensures the fineness of the powder. In practical applications, whether it is mixed with other solid raw materials or added to liquid products, it can disperse quickly and evenly, helping to fully exert its efficacy. Specifications: Common grape seed proanthocyanidin products on the market have various specifications for proanthocyanidin content, such as 10%, 25%, 50%, 95%, etc., to meet the needs of different customers in different scenarios. In addition to products with clear content, different proportional extract specifications such as 10:1 and 20:1 are also provided to meet diverse formula designs.
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