The present invention relates to a magnetic anisotropic material, in the form of magnetic elongated elements, preferably superparamagnetic nanochains, for use in the disruption of a bacterial
biofilm and / or in the
sensitization of bacterial colonies to antibiotic treatment, the non-therapeutical use of said magnetic anisotropic material for disrupting a bacterial
biofilm and / or sensitizing bacterial colonies present on a surface, on and / or within a
medical device, in pipes, in conducts, and / or in a liquid, a
biofilm disrupting and / or sensitizing composition comprising said magnetic anisotropic material and at least one
antibacterial agent, said biofilm disrupting and / or sensitizing composition for use in the treatment of a bacterial infection or
infestation involving biofilm formation, the non-therapeutical use of said composition as an anti-
infective agent, preferably for the disinfection of a surface, a
medical device, pipes, and / or conducts, or for purification of a liquid, and an
in vitro or
ex vivo method for disrupting a bacterial biofilm and / or sensitizing bacterial colonies to antibiotic treatment, wherein it comprises a step of applying an oscillating or
rotating magnetic field to a magnetic anisotropic material.