The present invention is concerned with microorganisms or fragments thereof as sensorically neutral oral care agents, particularly for prevention of dental calculus, as anti-caries agents and/or anti-oral malodor agents. The invention is furthermore concerned with compositions comprising microorganisms or fragments thereof for reducing mutans Streptococci. Such compositions can be used in oral care compositions, e.g. for caries prophylaxis, or for prophylaxis of dental calculus or oral malodor. They may also or instead be used for prevention or treatment of oral malodor. As the microorganisms and fragments thereof according to the present invention have a very low, unobtrusive smell and taste, they are particularly suited as sensorically neutral agents for preventment of dental calculus, caries, oral biofilm formation and/or for prevention or treatment of oral malodor. The microorganisms and fragments thereof, and also compositions comprising such microorganisms and fragments, can thus advantageously be used in food and feed compositions, particularly in pet foods. Furthermore, the invention is concerned with methods of preparing such microorganisms, fragments, compositions, foods and feeds.
