Efficacy of Freezing in Eliminating Infectivity of Trichinella spiralis in Boxed Pork Products

Autor: A.E. Sandoval, W. J. Zimmermann, Robert E. Rust, Dennis G. Olson
Rok vydání: 1985
Předmět:
Zdroj: Journal of Food Protection. 48:196-199
ISSN: 0362-028X
DOI: 10.4315/0362-028x-48.3.196
Popis: The relationship of storage time and temperature to loss of infectivity for Trichinella spiralis was evaluated. Ground trichinous pork was stuffed into casings, packed in boxes, and frozen in tiers of five boxes at four selected temperatures. Trichinae became non-infective between 6 to 10 d when stored at -17.8°C and between 11 to 15 d when stored at -12.2°C. Infective trichinae were obtained in final samplings after 56 d of freezing at -9.4°C and 71 d at -6.7°C. Little or no effect on infectivity was evident in trichinae frozen at -6.7°C throughout the 71-d period. Position of the box in the tier was a factor at -17.8°C and -12.2°C, as infectivity decreased more rapidly in top and bottom boxes than in other boxes.
Databáze: OpenAIRE