Stable concentrated emulsions of monocaprin in water are provided which are microbicidal upon dilution and can be used for disinfection of foodborne bacteria, such as campylobacter species, and other pathogenic and spoilage bacteria in a variety of environments and situations, such as in drinking water for poultry, for rinsing raw meat and cleaning of food preparation surfaces. A method for manufacturing such emulsions is provided and also anti-bacterial liquid detergents containing monocaprin, including dishwashing liquids and other household detergents.