ET-22 and use thereof

Lactobacillus paracasei Lactobacillus paracasei Lactobacillus paracasei The present application relates to a ET-22 strain and use thereof. The present application provides a ET-22 strain with a deposit number of CGMCC No. 15077, a composition containing the strain and a method of treating a subject using the strain. The present application also relates to a method for treating a subject, including administering an effective amount of the ET-22 strain to a subject in need thereof for 1) whitening teeth and/or inhibiting oral pathogens; 2) adjusting balance of flora in the subject; 3) promoting growth of bifidobacteria and/or lactic acid bacteria; and/or 4) enhancing immunity of the subject.