The present invention relates to novel strains capable of producing conjugated linoleic acid (CLA). The strains include Bifidobacterium breve CBG-C2, Bifidobacterium pseudocartenulatum CBG-C4 and Enterococcus faecium CBG-C5. The strains are excellent in producing CLA and are able to secret the produced CLA to a medium or to accumulate in the bodies thereof. Also, the strains show strong resistance to antibiotics and acids such as stomach acid or bile salt. A composition comprising the strain according tot he present invention is prepared in the form a capsule comprising the strain according to the present invention and CLA encapsulated in a coating material comprising water soluble polysaccharides and may be used in functional foods and medicaments.
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