An apparatus comprising a beverage bottle or food container made of a material comprising a polymer and a micro-organism powder comprising living or viable spores of a micro-organism incorporated into said polymer and prepared by a process comprising mixing a polymer matrix comprising said polymer and said micro-organism powder at a pressure ranging from 1.5 to 50 bar or at temperatures ranging from 100° C. to 220° C. at a pressure ranging from 1.5 to 50 bar, wherein said micro-organism is a Bacillus amyloliquefaciens strain deposited under No. 1D9698 at the Belgian Co-ordinated Collections of Micro-organisms (BCCM), or a Bacillus strain with a gyrA sequence that is at least 95% identical to SEQ ID NO:1, and which is capable of withstanding a pressure ranging from 1.5 to 50 bar or at temperatures ranging from 100° C. to 220° C. at a pressure ranging from 1.5 to 50 bar, and wherein said polymer comprises at least one monomer selected from the group consisting of acrylates, methacrylates, acrylamides, methacrylamides, alcohols, amines, anhydrides, epoxides, styrenes, functionalized vinyls, functionalized allyls, propenes, butadienes, ethylenes, isocyanates, lactams, lactones, saccharides, glucose and esters.