Affiliation:
1. 1Departments of Microbiology, Clemson, South Carolina 29634
2. 2Food Science, Clemson University, Clemson, South Carolina 29634
Abstract
Lactobacillus plantarum BF001 isolated from chilled processed channel catfish produced an antimicrobial substance active against selected bacteria from the genera Lactobacillus, Lactococcus, Listeria, Micrococcus, Leuconostocs, Pediococcus, Staphylococcus, Streptococcus, Salmonella and Pseudomonas. The antimicrobial effect did not result from acidic fermentation products or hydrogen peroxide. Culture extracts showed a bactericidal mode of action, displayed optimal activity at pH 3.5, and retained full activity after 30 min at 100°C (pH 3.5). It was not conclusively proved that the substance, named plantaricin F, was sensitive to proteolytic enzymes. Its molecular weight was estimated by ultrafiltration studies to be under 10,000 daltons. The ability of plantaricin F to inhibit a wide-range of bacteria, including gram-positive and gram-negative foodborne pathogens, is of potential interest for food safety, and plantaricin F may have future applications as a food preservative.
Publisher
International Association for Food Protection
Subject
Microbiology,Food Science
Cited by
52 articles.
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