PROBLEM TO BE SOLVED: To provide excellent lipopolysaccharides having different nature from that of conventional lipopolysaccharides, and a compound comprising the lipopolysaccharides.SOLUTION: The present invention provides lipopolysaccharides obtained from Pantoea vagans, a lipopolysaccharide production method for obtaining lipopolysaccharides from Pantoea vagans, and pharmaceuticals, animal pharmaceuticals, quasi drugs, cosmetics, foods, functional foods, feed, or bath agents comprising the lipopolysaccharides.SELECTED DRAWING: Figure 1【課題】従来のリポ多糖と異なる性格を有する優れたリポ多糖、及び該リポ多糖配合物を提供すること。【解決手段】パントエア・バガンスから得られるリポ多糖、パントエア・バガンスからリポ多糖を得るリポ多糖製造方法、及び前記リポ多糖が配合されている医薬品、動物用医薬品、医薬部外品、化粧品、食品、機能性食品、飼料、又は浴用剤。【選択図】図1