Fecha de publicación: 04/10/2007 Fuente: WIPO "propolis" Disclosed herein is a natural composite preservative comprising extracts from Camellia sinensis, Matricaria recutita, Citrus grandis, Magnolia biondii, propolis, Thujopsis dolabrata and Salix alba, in combination. The natural composite preservative has potent antibacterial activity against a wide spectrum of microorganisms in addition to being safe for the body, producing neither toxicity nor irritation, and thus can be applied to cosmetics, pharmaceuticals, and foods.