Gamma Irradiation at −30 ± 10° of Low Level Nitrite/Nitrate Ham

Anellis, Abe; Shattuck, E.; Latt, T.; Songpasertchal, S.; Rowley, D. B.; Ross, Ernest

doi:10.1016/b978-0-12-078702-9.50018-2

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Clostridium botulinum Ionizing Radiation D‐Value Determination Using a Micro Food Sample System

Kreiger

Snyder

Pflug

1983

Journal of Food Science

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A miniaturized system for rapid and accurate irradiation D-value determinations was evaluated. The test units consisted of pork, ham or chicken substrates inoculated with a mixed suspension of Clostridium botulinurn spores, sealed inside polypropylene cryotubes at vacuum levels of 250,125 and 50 torr. Samples were irradiated with ~CO gamma rays at -30 + 10°C up to a dose of 1.8 Mrads. D-values were in close agreement with historical determination for the substrates and conditions tested. The D-value estimates encompass a standard error of 0.025 Mrad at p < 0.05. Replicate experiments conducted on different days demonstrated a high degree of reproducibility.

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