Changes in resistance to radiation and heat during sporulation and germination of Clostridium botulinum 33A.
نویسندگان
چکیده
During sporulation, Clostridium botulinum 33A developed resistance to ultraviolet and gamma rays about 2 hr prior to its development of heat resistance. During germination, loss of resistance to heat, ultraviolet radiation, and gamma radiation occurred essentially simultaneously.
منابع مشابه
Sporulation of Clostridium botulinum types A, B, and E, Clostridium perfringens, and putrefactive anaerobe 3679 in dialysis sacs.
Schneider, Morris D. (Quartermaster Food and Container Institute for the Armed Forces, U.S. Army, Chicago, Ill.), Nicholas Grecz, and Abe Anellis. Sporulation of Clostridium botulinum types A, B, and E, Clostridium perfringens, and Putrefactive Anaerobe 3679 in dialysis sacs. J. Bacteriol. 85:126-133. 1963.-Concentrated cultures of spores of Clostridium botulinum type A (33A, 37A), B (41B, 51B)...
متن کاملPhysiology of the Sporulation Process in Clostridium Botulinum. I. Correlation of Morphological Changes with Catabolic Activities, Synthesis of Dipicolinic Acid, and Development of Heat Resistance.
Day, Lawrence E. (Michigan State University, East Lansing), and Ralph N. Costilow. Physiology of the sporulation process in Clostridium botulinum. I. Correlation of morphological changes with catabolic activities, synthesis of dipicolinic acid, and development of heat resistance. J. Bacteriol. 88:690-694. 1964.-A reasonable degree of synchrony in the sporulation of Clostridium botulinum 62-A wa...
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Clostridium sporogenes PA 3679 is a non-toxic endospore former that is widely used as a surrogate for Clostridium botulinum by the food processing industry to validate thermal processing strategies. PA 3679 produces spores of exceptionally high heat resistance without botulinum neurotoxins, permitting the use of PA 3679 in inoculated pack studies while ensuring the safety of food processing fac...
متن کاملExpression and Purification of Neurotoxin-Associated Protein HA-33/A from Clostridium botulinum and Evaluation of Its Antigenicity
Background: Botulinum neurotoxin (BoNT) complexes consist of neurotoxin and neurotoxin-associated proteins. Hemagglutinin-33 (HA-33) is a member of BoNT type A (BoNT/A) complex. Considering the protective role of HA-33 in preservation of BoNT/A in gastrointestinal harsh conditions and also its adjuvant role, recombinant production of this protein is favorable. Thus in this study, HA-33 was expr...
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Spores of Clostridium perfringens possess high heat resistance, and when these spores germinate and return to active growth, they can cause gastrointestinal disease. Work with Bacillus subtilis has shown that the spore's dipicolinic acid (DPA) level can markedly influence both spore germination and resistance and that the proteins encoded by the spoVA operon are essential for DPA uptake by the ...
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ورودعنوان ژورنال:
- Journal of bacteriology
دوره 102 2 شماره
صفحات -
تاریخ انتشار 1970