RRC ID 40981
Author Rumjuankiat K, Perez RH, Pilasombut K, Keawsompong S, Zendo T, Sonomoto K, Nitisinprasert S.
Title Purification and characterization of a novel plantaricin, KL-1Y, from Lactobacillus plantarum KL-1.
Journal World J. Microbiol. Biotechnol.
Abstract Three bacteriocins from Lactobacillus plantarum KL-1 were successfully purified using ammonium sulfate precipitation, cation-exchange chromatography and reverse-phase HPLC. The bacteriocin peptides KL-1X, -1Y and -1Z had molecular masses of 3053.82, 3498.16 and 3533.16 Da, respectively. All three peptides were stable at pH 2-12 and 25 °C and at high temperatures of 80 and 100 °C for 30 min and 121 °C for 15 min. However, they differed in their susceptibility to proteolytic enzymes and their inhibition spectra. KL-1Y showed broad inhibitory activities against Gram-positive and Gram-negative bacteria, including Salmonella enterica serovar Enteritidis DMST 17368, Pseudomonas aeruginosa ATCC 15442, P. aeruginosa ATCC 9027, Escherichia coli O157:H7 and E. coli ATCC 8739. KL-1X and -1Z inhibited only Gram-positive bacteria. KL-1X, KL-1Y and KL-1Z exhibited synergistic activity. The successful amino acid sequencing of KL-1Y had a hydrophobicity of approximately 30 % and no cysteine residues suggested its novelty, and it was designated "plantaricin KL-1Y". Plantaricin KL-1Y exhibited bactericidal activity against Bacillus cereus JCM 2152(T). Compared to nisin, KL-1Y displayed broad inhibitory activities of 200, 800, 1600, 800, 400 and 400 AU/mL against the growth of Bacillus coagulans JCM 2257(T), B. cereus JCM 2152(T), Listeria innocua ATCC 33090(T), Staphylococcus aureus TISTR 118, E. coli O157:H7 and E. coli ATCC 8739, respectively, whereas nisin had similar activities against only B. coagulans JCM 2257(T) and B. cereus JCM 2152(T). Therefore, the novel plantaricin KL-1Y is a promising antimicrobial substance for food safety uses in the future.
Volume 31(6)
Pages 983-94
Published 2015-6
DOI 10.1007/s11274-015-1851-0
PMID 25862353
MeSH Bacteriocins / chemistry Bacteriocins / isolation & purification* Bacteriocins / pharmacology* Chromatography, High Pressure Liquid Chromatography, Ion Exchange Fractional Precipitation Gram-Negative Bacteria / drug effects Gram-Positive Bacteria / drug effects Hydrogen-Ion Concentration Hydrophobic and Hydrophilic Interactions Lactobacillus plantarum / metabolism* Microbial Viability / drug effects* Molecular Weight Peptides / chemistry Peptides / isolation & purification* Peptides / pharmacology* Protein Stability Sequence Analysis, Protein Temperature
IF 2.652
Times Cited 3
General Microbes JCM 2152 JCM 1157 JCM 5885 JCM 2257 JCM 5887 JCM 1149 JCM 6124 JCM 5803 JCM 5804 JCM 1306 JCM 1465