Nisin production by a mixed-culture system consisting of Lactococcus lactis and Kluyveromyces marxianus
Article Abstract:
A mixed culture of Lactococcus lactis and Kluyveromyces marxianus was employed in developing a unique method to regulate the pH during antimicrobial peptide (nisin) production by the lactic acid bacterium, Lactococcus lactis subsp. lactis. The kinetics of growth of, and production of lactate, acetate, and nisin by, L. lactis were studied. The kinetics of growth of and lactic consumption by K. marxianus were also examined. The pH was maintained constant when the lactate level was kept low and nisin accumulated in the medium to a high level compared with that attained using other pH control strategies.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1999
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Inhibition of microbial growth by ajoene, a sulfur-containing compound derived from garlic
Article Abstract:
Ajoene, a sulfur-containing compound obtained from garlic, prevents platelet aggregation and exhibits a broad-spectrum of anti-microbial activity. The compound is active against the growth of both gram-positive and gram-negative bacteria as well as yeast. Reduction by cysteine disrupts the disulfide bond and destroys the anti-microbial activity of ajoene. This shows that the disulfide bond is essential for the anti-microbial activity
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1996
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Electrochemical Ag+ for preservative use
Article Abstract:
The antimicrobial effectiveness of electrochemical Ag+ solutions and analogous silver solutions from organic salts were examined. Contact experiments were conducted with different experimental conditions using mold, bacteria and a yeast species. Ag+was found to be more effective in preservatives based on its mode of action, effectiveness at low concentrations and stability.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
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