Influence of Sublethal Treatment with Heat or Chlorine on the Growth of Psychrophilic Bacteria
Open Access
- 1 April 1955
- journal article
- research article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 38 (4) , 380-386
- https://doi.org/10.3168/jds.s0022-0302(55)94988-2
Abstract
When cultures of psychrophilic bacteria isolated from milk were partially killed by heat, the survivors had a greatly increased lag phase when holding was at 5 or 10[degree] C. A slightly increased lag phase was noted when holding was at 25[degree]C. Immediately after heating, larger numbers of survivors of sublethal doses of heat failed to develop colonies on Standard Plate Count agar than on Tryptone, glucose-meat extract agar, but by 24 hours this difference had largely disappeared. The growth curves of organisms surviving treatment with chlorine were not altered to any great extent.Keywords
This publication has 7 references indexed in Scilit:
- The Effect of Storage Temperatures on the Growth of Psychrophilic Organisms in Sterile and Laboratory Pasteurized SkimmilksJournal of Dairy Science, 1954
- THE INFLUENCE OF TIME AND TEMPERATURE OF PLATE INCUBATION UPON BACTERIAL COUNTS OF MARKET MILK AND RELATED PRODUCTS, PARTICULARLY AFTER HOLDING UNDER REFRIGERATION1Journal of Milk and Food Technology, 1954
- THE KEEPING QUALITY OF PASTEURIZED MILK AS INFLUENCED BY THE GROWTH OF PSYCHROPHILIC BACTERIA AND THE ADDITION OF AUREOMYCIN*Journal of Milk and Food Technology, 1953
- SOME FACTORS WHICH CONTRIBUTE TO THE PSYCHROPHILIC BACTERIAL COUNT IN MARKET MILK*Journal of Milk and Food Technology, 1952
- PSYCHROPHILIC BACTERIA IN RAW AND COMMERCIALLY PASTEURIZED MILKProceedings of the Society for Applied Bacteriology, 1946
- Factors which Influence the Growth of Heat-treated BacteriaJournal of Bacteriology, 1943