METHOD FOR SCREENING SUBSTANCES HAVING IGA INDUCTION POTENTIAL AND BACTERIAL STRAINS OF GENUS BIFIDOBACTERIUM

摘要

The present invention is to provide an easy, rapid method for screening a greatamount of substances having IgA induction potential. The IgA induction potentialherein mentioned means the potential to activate and enhance the activity of IgAproduction cells to produce secretory-type IgA in response to antigen. The presentinvention is to provide bacterial strains of genus Bifidobacterium obtained by themethod for screening substances having IgA induction potential. Morespecifically, the present invention is to provide Bifidobacterium longum YIT 4062,Bifidobacterium breve YIT 4063 and Bifidobacterium breve YIT 4064. The threestrains obtained by the present invention have high IgA induction potential.