Lactobacillus delbrueckii subsp. bulgaricus ATCC 11842 = JCM 1002

Lactobacillus delbrueckii subsp. bulgaricus ATCC 11842 = JCM 1002 is a Gram-positive, rod-shaped bacterium that typically forms chains. This strain is a facultative anaerobe, demonstrating versatility in its metabolic processes by thriving in both aerobic and anaerobic environments. It exhibits optimal growth at 42.0°C, which aligns with its use in dairy fermentation processes, particularly in the production of yogurt and other fermented milk products. L. delbrueckii subsp. bulgaricus is known to inhabit various ecological niches, particularly those associated with dairy environments, where it plays a crucial role in the fermentation and preservation of milk. This microbe contributes to the development of desirable flavors and textures in dairy products while also exerting probiotic effects that may benefit gut health in consumers. The ability of Lactobacillus delbrueckii subsp. bulgaricus to thrive at elevated temperatures may provide insights into its resilience and adaptability in diverse habitats, particularly under conditions that might inhibit the growth of other microbial competitors. This trait underscores its significance in traditional and industrial fermentation, highlighting the potential for optimizing fermentation processes in warm climates or during summer months.