Thirty-four strains of lactic acid bacteria (7 Bifidobacterium, 11 Lactobacillus, 6 Lactococcus, and 10 Streptococcus thermophilus) were assayed in vitro for antioxidant activity against ascorbic and linolenic acid oxidation (TAAAA and TAALA), trolox equivalents (TEAC), intracellular glutathione (TGSH), and superoxide dismutase (SOD).