Three strains of lactic acid bacteria,strain ORC2,QM7 and QM8,were obtained from dry fermented sausages. All 3 strains were gram-positive,lactic acid-producing,and catalase-negative. Based on morphological,physiological,biochemistry test and 16S rDNA sequencing analysis,ORC2 and QM7 were identified as Leuconostoc mesenteroides,and strain QM8 as Leuconostoc citreum. These isolates showed the ability to remove cholesterol,and to inhibit ·OH,DPPH·,and O-2·. The three radicals scavenging ratios for three strains were positively correlated with bacterial density. At a concentration of 5 × 108CFU /mL,ORC2 showed the highest radical-scavenging ratios( removal rate,65.36%) on ·OH,QM8 exhibited the strongest DPPH· radical scavenging ability( removal rate,61. 21%),and QM7 scavenged most O-2· radical( removal rate,75. 70%). For 96 h,strain QM7 could remove51. 2% cholesterol in media,which was far more than either LAB alone.