PMID: 2498281Jan 1, 1989Paper

Variation in the behaviour of enterotoxigenic Staphylococcus aureus after heat stress in milk

The Journal of Applied Bacteriology
V K BatishS Grover

Abstract

The survival of several strains of Staphylococcus aureus after heat stress in different menstrua was not logarithmic and F-values were determined to express their resistance to heat. Of the strains tested, Staph. aureus 234 (enterotoxin B) was the most heat resistant and Staph. aureus 790 (enterotoxin E) was the most heat sensitive. Buffalo milk gave the best protection to all the strains of Staph. aureus against heat, followed by cow's milk; phosphate-buffered saline gave the least protection. Soyabean casein digest agar gave maximum recovery of survivors followed by brain heart infusion and Baird-Parker medium. At 50 degrees C there was no marked variation in coagulase production by the surviving strains but at 55 and 62.5 degrees C there was complete loss of coagulase activity. There was a decreased deoxyribonuclease (DNase) production by all the strains of Staph. aureus after heat stress. Heat-treatment at 55 and 62.5 degrees C resulted in loss of enterotoxin production by all the survivors except S6 and 234, the surviving cells of which still produced enterotoxin B after heat treatment at 55 degrees C. Most of the survivors regained lost characteristics such as coagulase, DNase and enterotoxin production after four to five...Continue Reading

References

May 17, 1976·Clinica Chimica Acta; International Journal of Clinical Chemistry·J StĕpánJ Kolár
Aug 1, 1977·Canadian Journal of Microbiology·R Firstenberg-EdenC H Mannheim
Jun 1, 1978·Applied and Environmental Microbiology·A Koupal, R H Deibel
Oct 1, 1975·The Journal of Applied Bacteriology·C Henderson
Jun 1, 1971·Journal of Dairy Science·S R TatiniE P Casman
May 1, 1969·Journal of Dairy Science·R DabbahJ F Mattick
Jan 1, 1966·Journal of Bacteriology·J J Iandolo, Z J Ordal
Jul 1, 1966·Journal of Bacteriology·A J Rosenwald, R E Lincoln
Jun 10, 1967·British Medical Journal·G M Bonser
Feb 1, 1982·The Journal of Applied Bacteriology·C Palasuntheram, M S Beauchamp
Oct 1, 1959·Journal of Bacteriology·S Y ALAMI, F C KELLY
Apr 1, 1965·Journal of Bacteriology·M E FRIEDMAN, J D WHITE
Dec 1, 1959·Canadian Journal of Microbiology·R G MURRAYB H MAYALL

❮ Previous
Next ❯

Citations

Jun 1, 1993·International Journal of Food Microbiology·Y NishikawaT Kimura
Apr 5, 2002·International Journal of Food Microbiology·Martinus A J S van Boekel
Dec 1, 1993·Applied and Environmental Microbiology·M L StecchiniA Giomo

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.