Control of Brochothrix thermosphacta spoilage of pork adipose tissue using bacteriophages.

Autor: Greer GG; Agriculture and Agri-Food Canada, Lacombe Research Centre, Alberta. greerg@em.agr.ca, Dilts BD
Jazyk: angličtina
Zdroj: Journal of food protection [J Food Prot] 2002 May; Vol. 65 (5), pp. 861-3.
DOI: 10.4315/0362-028x-65.5.861
Abstrakt: Adipose tissue discs were coinoculated with Brochothrix thermosphacta and homologous bacteriophages (phages) to determine the effects these had on phage multiplication, bacterial growth, and off-odor development during storage at 2 degrees C or under simulated retail display at 6 degrees C. In the presence of about 10(5) bacteria/cm2 and an equivalent number of phages, there was a 3-log increase in phage numbers and a 2-log decrease in bacterial numbers, and objectionable off-odors were suppressed during refrigerated storage. Up to 68% of the surviving bacterial population were resistant to phages. The storage life of adipose tissue could be increased from 4 days in controls to 8 days in phage-treated samples by preventing the development of off-odors associated with the growth of B. thermosphacta. Phages may provide a novel approach to extending the storage quality of chilled meats.
Databáze: MEDLINE