Effect of 6.0% polyphosphate treatment on microbial growth and
composition of microbial flora of three representative seafoods were
investigated.
Polyphosphate treatment washed off microorganisms by 1 log in
peeled shrimp (10⁷ to 10⁶ and 10⁶ to 10⁵) and cooked crab meat (10⁶
to 10⁵) and by 2 logs in red...
Forty Arthrobacter species isolated from Pacific and Atlantic fishery sources were examined to determine their significance in seafood. All strains were able to utilize inorganic nitrogen as the sole nitrogen source and grew in the absence of vitamins or growth factors. In addition, 78% grew on a medium containing only...
Pacific shrimp (Pandalus jordani) was washed repeatedly and the
eluted bacteria were enumerated and identified. Selected isolates
were tested for their adhesive properties.
Washing reduced the microbial load by 3.84 to 42.04%. The bacteria
which most resisted wash-off were Staphylococcus and Pseudomonas
spp. The easiest to wash off was Flavobacterium...
One hundred and fourteen strains of Moraxella species isolated
from marine fishery sources were investigated to determine the cause
of this organism's predominance in seafood. The nutritional requirements,
effect of pH, NaCl concentration, and temperature on growth,
utilization of carbohydrates, protein, and lipid, resistance to 12
antibiotics, sensitivity to phenethyl...
In order to determine the source of bacteria in Tillamook Bay,
Oregon, water samples were collected monthly for six months during
the rainy season from October 1975 through March 1976 from the bay
and its tributaries, the Kilchis, Trask, Tillamook, and Wilson
Rivers.
Fecal coliform levels of these samples were...
Trimethylamine-N-oxide (TMA-0) reductase activity of resting cells
of Escherichia coli was inhibited by tetrasodium ethylenediaminetetraacetate
(Na₄EDTA), benzoic acid (BA), and methylparaben (MP). The 50% inhibitory
concentrations of Na₄EDTA, BA, and MP were 20.2, 1.2, and 32.4 mM,
respectively. BA at pH 6.5 or below most effectively inhibited the TMA-0
reductase....
The storage life at 43°F of ground dover sole fillets (Microstomas pacificus) was determined microbiologically after treatment with
ionizing radiation and antimicrobial agents. Sodium benzoate, potassium
sorbate and the sodium salts of the methyl and propyl esters
of parahydroxybenzoic acid (MPB and PPB) all approximately doubled
the refrigerated storage life...
Sterile fish muscle homogenate was prepared from the individually
line caught black rockfish (Sebastes melanops) and inoculated
with the pure culture of Pseudomonas putrefaciens strain 17. The
inoculated homogenate was incubated at 5°C and the growth and production
of volatile sulfur compounds determined by a combined gas-liquid
chromatography and mass...
Achromobacter A43 produced a compound inhibitory to the outgrowth
of Clostridium botulinum type E spores. The inhibitor could
be produced in various laboratory media and the outgrowth of germinated
spores was completely inhibited by 1/10th dilution of the A43
spent medium. Germination was not affected. The spores lost
refractility in...