title: Antibacterial and antiviral activity of camel milk protective proteins.
abstract: Lysozyme (LZ), lactoferrin (LF), lactoperoxidase (LP), immunoglobulin G and secretory immunoglobulin A were extracted from camel milk. The activity of these protective proteins was assayed against Lactococcus lactis subsp. cremoris, Escherichia coli, Staphylococcus aureus, Salmonella typhimurium and rotavirus. Comparative activities of egg white LZ, bovine LZ and bovine LF are also presented. The antibacterial activity spectrum of camel milk LZ was similar to that of egg white LZ, and differed from bovine milk LZ. Bovine and camel milk LF antibacterial activity spectra were similar. The camel milk LP was bacteriostatic against the Gram-positive strains and was bactericidal against Gram-negative cultures. The immunoglobulins had little effect against the bacteria but high titres of antibodies against rotavirus were found in camel milk. The LP system was ineffective against rotavirus.
authors.affiliation: Faculty of Agriculture, Alexandria University, Egypt.
authors.forename: E I
authors.initials: EI
authors.lastname: el Agamy
authors.forename: R
authors.initials: R
authors.lastname: Ruppanner
authors.forename: A
authors.initials: A
authors.lastname: Ismail
authors.forename: C P
authors.initials: CP
authors.lastname: Champagne
authors.forename: R
authors.initials: R
authors.lastname: Assaf
mesh_terms: D000818:Animals; D001419:Bacteria / Q000276:immunology*; D002162:Camelus; D005260:Female; D006090:Gram-Negative Bacteria / Q000276:immunology; D006094:Gram-Positive Bacteria / Q000276:immunology; D007071:Immunoglobulin A, Secretory / Q000276:immunology; D007074:Immunoglobulin G / Q000276:immunology; D007781:Lactoferrin / Q000276:immunology; D007784:Lactoperoxidase / Q000276:immunology; D008892:Milk / Q000276:immunology*; D008894:Milk Proteins / Q000276:immunology*; D009113:Muramidase / Q000276:immunology; D012401:Rotavirus / Q000276:immunology*
chemical_list: D007071:Immunoglobulin A, Secretory; D007074:Immunoglobulin G; D008894:Milk Proteins; D007784:Lactoperoxidase; D009113:Muramidase; D007781:Lactoferrin