BIOCIDAL PEPTIDE AND PREPARATION BASED THEREON

The invention relates to the field of medicine, in particular to novel peptides having biocidal properties, more particularly antibacterial, antifungal and antiviral properties, and preparations based thereon. Proposed are a biocidal peptide of general formula Y-Ile-Leu-Pro-X-Lys-X-Pro-X-X-Pro-X-Arg-Arg-NH2, where X is 4-nitrophenylalanine; 4-chlorophenylalanine; 4-methoxyphenylalanine; D-phenylalanine; 4-aminophenylalanine; 4-aminobenzoylphenylalanine; homophenylalanine; 4-tertbutylphenylalanine; 2-methylphenylalanine; 4-fluorophenylalanine; pentafluorophenylalanine; or 2-trifluoromethylphenylalanine; and Y is H or palmitoyl or aminodecanoyl, and a preparation in the form of a gel with biocidal properties, containing, as an active substance, said peptide at a concentration of 0.001 to 0.1 wt%. The claimed peptides demonstrate biocidal properties towards bacteria, including spore-forming bacteria, mould fungi, and also viruses. The peptide-based gels can be used for treating bacterial and viral infectious diseases and infectious comorbidities.