Article Abstract:
A study was conducted to analyze the impact of low-osmolality nutrient media on the growth and culturability of a number of Campylobacter species. The effects of environmental temperature on the growth and survival of species were also examined. Results indicated that the osmotic threshold effect was not limited to C. jejuni NCTC 11351. Findings also suggested that declines in the culturability of C. jejuni could be correlated with losses in cytoplasmic contents resulting from exposure to low-osmolality nutrient media.
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Article Abstract:
Research was conducted to isolate and purify poly-3-hydroxybutyrate (PHB)-like material from two strains of Legionella pneumophila. Characterization procedures were carried out using nuclear magnetic resonance spectroscopy and gas chromatography-mass spectromery. The physiology of PHB formation was investigated under iron-limited and -replete conditions. Results provide evidence that L. pneumophila accumulates substantial intracellular reserves of PHB which promote its long-term survival under starvation conditions.
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Article Abstract:
Research was conducted to show that the red colonies found in oyster extract were deinococci with radiation resistance greater than that of Deinococcus radiophilus. The deinococci were isolated from three commercial oyster extracts stored at 4, 20 and 30 degrees C and sampled for total aerobic bacterial counts at appropriate times. Results indicate that the natural habitat of deinococci is an aerobic environment with a slightly elevated saline content, low sugar levels and soluble protein.
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