Botanical Source: Sambucus williamsii Hance Appearance: Red-Brown Standard: 25% Anthocyanidins Water: not more than 5.0% Package: 25/ KG per paper drum or packed with little parcel. Medicinal Use: Proanthocyanidins are a powerful antioxidant, it can protect the body from a harmful substances called free radicals damage. This product can be used as acidic beverages and sparkling wine, cider or natural functional food