Fecha de publicación: 27/07/2023 Fuente: WIPO "varroa" Described herein is the preparation of an aqueous hop extract and a boiling water hop extract prepared from dried hop cones that were ground prior to extraction. As discussed below, extracts were prepared from a number of different hop varieties and were tested against a number of clinically relevant bacterial strains. As discussed herein, surprisingly, the boiling water extract showed greater antibacterial activity than the aqueous extract.