Lactobacillus delbrueckii subsp. bulgaricus strain FAM 21277

Lactobacillus delbrueckii subsp. bulgaricus strain FAM 21277 is a Gram-positive, rod-shaped bacterium characterized by its chain-like cell arrangement. As a facultative anaerobe, it can thrive in both the presence and absence of oxygen, which contributes to its adaptability in various environments. This strain is non-motile and does not possess flagella, indicating a reliance on its surrounding conditions for movement rather than active locomotion. The optimal growth temperature for L. delbrueckii subsp. bulgaricus FAM 21277 is 42°C, placing it within the mesophilic temperature range. This temperature preference suggests it is well-suited for environments that can sustain high temperatures, which is often the case in the production of fermented dairy products. L. delbrueckii subsp. bulgaricus is known to have a free-living biotic relationship, primarily associated with Homo sapiens as its host. This relationship highlights its significance in human microbiota, particularly in the context of dairy fermentation processes, where it plays a crucial role in the production of yogurt and other fermented dairy products. With a single replicon and a single membrane, this strain exhibits a relatively simple genomic structure, which may facilitate efficient metabolic processes. Understanding the traits of L. delbrueckii subsp. bulgaricus FAM 21277 can provide insights into its ecological role in fermentation and its potential benefits in human health through probiotic applications.