A method for liver protection of a mammal is provided and includes administering an effective amount of isolated Lactobacillus plantarum CMU995 thereto. Providing a new use of Lactobacillus plantarum CMU995, which is deposited at the Food Industry Research and Development Institute (FIRDI) in Taiwan under accession number BCRC 910472 and in the German Collection of Microorganisms and Cell Cultures (DSMZ) under accession number DSM 23780.