Problem
1. List one species each from Lactococcus and Streptococcus and two each from Leuconostoc, Pediococcus, Bifidobacterium, and Propionibacterium used in food fermentation.
2. How are the species in genus Lactobacillus (the basis) divided into groups? List two species from each group.
3. When are the following terms used: lactococci and Lactococcus; streptococci and Streptococcus; leuconostocs and Leuconostoc; pediococci and Pediococcus; and lactobacilli and Lactobacillus?
4. Name three bacterial species that are now used as probiotic bacteria.