The question of a possible relationship between the RNA content of poliovirus and its reactivity as Nor H-antigen was examined with double-labeled virus preparations (32P-RNA, 14C-Protein). The following results were obtained: 1. Complete virus particles containing RNA may be Nor H-reactive. 2. Heat inactivation of poliovirus causes dissociation of capsid and RNA. 3. Under certain experimental ...

BACKGROUND Inactivation processes can be classified into non-thermal inactivation methods such as ethylene oxide and γ-radiation, and thermal methods such as autoclaving. The ability of carbon dioxide enriched microbubbles to inactivate Pseudomonas putida suspended in physiological saline, as a non-thermal sterilisation method, was investigated in this study with many operational advantages ove...

two different viruses were isolated from sugar beet growing areas in karaj, which caused mosaic symptoms. collected samples were classified in two different groups. the host range of the first group was confined to some species in chenopodiaceae and amaranthaceae families. the sap of infected plants reacted positively with beet mosaic virus antisera in ouchterlony double-diffusion test. electro...

The intention of this study was to investigate the inactivation of endospores by a combined thermal and pulsed electric field (PEF) treatment. Therefore, self-cultivated spores of Bacillus subtilis and commercial Geobacillus stearothermophilus spores with certified heat resistance were utilized. Spores of both strains were suspended in saline water (5.3 mS cm(-1)), skim milk (0.3% fat; 5.3 mS c...

Determination of thermal inactivation kinetics of Hepatitis A virus in blue mussel (Mytilus 1 edulis) homogenate 2 3 4 5 Hayriye Bozkurt, Doris H. D’Souza, P. Michael Davidson 6 7 8 9 Department of Food Science and Technology, The University of Tennessee, Knoxville, TN, 10 USA. 11 12 13 Running Head: Thermal inactivation of Hepatitis A in blue mussels 14 15 16 Address correspondence to P. Micha...

A series of experiments is reported to identify and characterize the inactivation process in operation when drinking water, heavily contaminated with a Kenyan isolate of Escherichia coli, is stored in transparent plastic bottles that are then exposed to sunlight. The roles of optical and thermal inactivation mechanisms are studied in detail by simulating conditions of optical irradiance, water ...

Variola major, the causative agent of smallpox, has been eradicated from nature. However, stocks still exist; thus, there is a need for relevant decontamination studies, preferably with nonpathogenic simulants. Previous studies have shown a similarity in response of vaccinia virus and variola major to various decontaminants and thermal inactivation. This study compared vaccinia and fowlpox viru...