title: Antimicrobial Peptides of Meat Origin - An In silico and In vitro Analysis.
abstract: The aim of this study was to evaluate the antimicrobial activity of meat protein-derived peptides against selected Gram-positive and Gram-negative bacteria. The in silico and in vitro approach was combined to determine the potency of antimicrobial peptides derived from pig (Sus scrofa) and cow (Bos taurus) proteins. The in silico studies consisted of an analysis of the amino acid composition of peptides obtained from the CAMPR database, their molecular weight and other physicochemical properties (isoelectric point, molar extinction coefficient, instability index, aliphatic index, hydropathy index and net charge). The degree of similarity was estimated between the antimicrobial peptide sequences derived from the slaughtered animals and the main meat proteins. Antimicrobial activity of peptides isolated from dry-cured meat products was analysed (in vitro) against two strains of pathogenic bacteria using the disc diffusion method. There was no evidence of growthinhibitory properties of peptides isolated from dry-cured meat products against Escherichia coli K12 ATCC 10798 and Staphylococcus aureus ATCC 25923.
authors.forename: Paulina
authors.initials: P
authors.lastname: Keska
authors.affiliation: Department of Meat Technology and Food Quality, Faculty of Food Science and Biotechnology, University of Life Sciences in Lublin, Skromna 8, 20-704 Lublin, Poland.
authors.forename: Joanna
authors.initials: J
authors.lastname: Stadnik
mesh_terms: D000818:Animals; D023181:Antimicrobial Cationic Peptides / Q000737:chemistry / Q000494:pharmacology*; D002417:Cattle; D003198:Computer Simulation; D030562:Databases, Protein; D004926:Escherichia coli / Q000187:drug effects*; D066298:In Vitro Techniques; D008460:Meat; D008826:Microbial Sensitivity Tests; D009124:Muscle Proteins / Q000737:chemistry*; D013211:Staphylococcus aureus / Q000187:drug effects*; D034421:Sus scrofa / Q000378:metabolism; D013552:Swine
chemical_list: D023181:Antimicrobial Cationic Peptides; D009124:Muscle Proteins
keywords: Antimicrobial peptides; in silico analysis; meat proteins