DEFINITION

Lacticaseibacillus rhamnosus (formerly known as Lactobacillus rhamnosus) is a Gram-positive, rod-shaped, heterofermentative non-spore-forming bacterium. Cells are nonmotile rods often with square ends, occurring singly or in chains. Arginine is not hydrolyzed. Suitable cryoprotectants may be added to the concentrated bacteria following fermentation, after which the product is frozen and then freeze-dried. The formulated product may be blended with suitable diluents and/or bulking agents. It contains NLT 100% of the labeled viable cell count of the appropriate strain of Lacticaseibacillus rhamnosus.

• Strain HN001: Lacticaseibacillus rhamnosus HN001 is a pure, specific strain of Lacticaseibacillus rhamnosus. It is a non-d-lactate producer strain. It contains plasmids.

• Strain GG: Lacticaseibacillus rhamnosus GG is a pure, specific strain of Lacticaseibacillus rhamnosus. It is a non-d-lactate producer strain. It contains no plasmid.