PROBLEM TO BE SOLVED: To provide a new lactobacillus in spite of being inexpensive and capable of being proliferated easily, exhibiting physiological activities equal to or higher than those of useful lactobacilluses strains known conventionally, and newly provide medicines, foods and feeds, containing the viable cells of the same.SOLUTION: The medicines, feeds and foods exhibiting immunity disease-improving effects are provided by using the viable cells of a new lactobacillus, Lactobacillus plantarum RGU-Lp1 strain separated from fermented milk as an active ingredient. Also the medicines, feeds and foods exhibiting infectious disease-preventing and treating effects which are different effects from those in the case of using the viable cells as the active ingredient are provided by using the filtrate of a culture supernatant of the above as the active ingredient.COPYRIGHT: (C)2012,JPO&INPIT【課題】安価かつ容易に増殖可能でありながら、従来から知られている有用特定乳酸菌株と同等またはそれ以上の生理作用を示す新規乳酸菌、及び、当該生菌等を含有する医薬品、食品、及び飼料を新たに提供する。【解決手段】発酵乳より分離した新規乳酸菌ラクトバチルス・プランタラム(Lactobacillus plantarum)RGU-Lp1株の生菌体を有効成分とすることで、免疫疾患症状改善効果を奏する医薬品、飼料、食品を提供し、その培養上清濾過物を有効成分とすることで、生菌体を有効成分とした場合とは相違する効果である感染症予防治療効果を奏する医薬品、飼料、食品を提供する。【選択図】なし
