Researchers in Spain found that red wine is effective at killing bacteria in oral biofilms. The antimicrobial effects of red wine and its inherent components on oral microbiota were studied by using a 5-species biofilmmodel of the supragingival plaque that includes Actinomyces oris, Fusobacterium nucleatum, Streptococcus oralis, Streptococcus mutans and Veillonella dispar.

The research study may be found in the Journal of Agricultural and Food Chemistry.