Isolated lactic acid bacteria strains CP-9 (Bifidobacterium longum) and bv-77 (Bifidobacterium breve) are provided. The present invention provides novel strains of lactic acid bacteria and novel compositions containing the present strains. The compositions are useful in fat-loss and/or weight-loss and may be used in the form of food or pharmaceutical compositions.一種經分離的乳酸菌菌株,該菌株為長雙歧桿菌(Bifidobacterium longum) CP-9菌株及/或短雙歧桿菌(Bifidobacterium breve) bv-77菌株。本發明係關於一種新穎之乳酸菌菌株,具有減脂/減重能力以及包含此菌株之新穎組合物,此組合物可以食品或醫藥組合物形式存在。無