A STUDY OF THE EFFECTS OF SUB-STERILIZATION DOSES OF RADIATION ON THE STORAGE LIFE EXTENSION OF SOFT-SHELLED CLAMS AND HADDOCK FILLETS. Quarterly Progress Report for period August-October 1961
Data obtained during the months of July and August, 1961 on the microbiological quality of haddock flllets and shucked, soft-shelled clams processed and marketed in the greater Boston area were compiled, analyzed statistically, and critically evaluated for commercial and sanitary significance. Analysis of the data by the techniques of analysis of variance and the Duncan Multiple Range Test indicated that statistically significant differences (p = 0.05) existed in the populations of aerobic-facultative microorganisms associated with haddock flllets processed during the morning, noon, and afternoon fllleting and packaging operations of a given company, as well as between fillets procured from the different companies surveyed at a given time of day. Higher macrocolony counts were generally obtained from haddock filIets processed in the afternoon (approx 15 x 10/sup 5//gram), as compared to those processed in the morning (approx 4 x 10/sup 5//gram). Soft-shelled clams dug from unpolluted beds in the vicinity of Boston, when shucked, were found to have bacterial counts which were approximately one hundred times lower (c.a., 5 x 10/sup 4//gram) than clams shipped in from Maryland and subsequently shucked in the local marketing area (c.a., 5 x 10/sup 6//gram). Anaerobic (Clostridia) counts were somewhat higher in shucked clams than haddock fillets. Statistically significant differences (p = 0.05) were found in the product taken from the processing lines of different clam shucking plants at a given time of day; especially with the product from the morning operations. On the average, Clostridia counts ranged from 0.5to 2.6 x 10/ sup 2//gram of the two sea foods in question. During September and October, 1961 the Mark I Food Irradiator was charged with 32,000 curies of Co/sup 60/ and calibrated for the various experimental programs by Fricke (ferric-ferrous) dosimetry. Standard solutions and procedures were employed in the dosimetric calibration of the three irradiation chambers. Number 2 tin cans and 5 m1 Neutraglas ampoules were used in the calibration determinations. Irradiation of haddock fillets commenced in the latter part of October and will continue, together with the irradiation of shucked, soft-shelled clams. (auth)
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge
- NSA Number:
- NSA-16-005116
- OSTI ID:
- 4815224
- Report Number(s):
- NYO-9573
- Country of Publication:
- United States
- Language:
- English
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A STUDY OF THE EFFECTS OF SUB-STERILIZATION DOSES OF RADIATION ON THE STORAGE LIFE EXTENSION OF SOFT-SHELLED CLAMS AND HADDOCK FILLETS. Quarterly Progress Report, November 1961-January 1962
A STUDY OF THE EFFECTS OF SUB-STERILIZATION DOSES OF RADIATION ON THE STORAGE LIFE EXTENSION OF SOFT-SHELLED CLAMS AND HADDOCK FILLETS. Quarterly Progress Report No. 2, August-October 1962