Bacterial Spores
Mostrando 13-24 de 303 artigos, teses e dissertações.
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13. Estudos de Bacillus thuringiensis Berliner visando ao controle de Spodoptera frugiperda (J.E.Smith). / Bacillus thuringiensis berliner research applied for the control of Spodoptera frugiperda (J. E. Smith).
From 24 soil samples about 461 bacterial colonies have been isolated, and 190 were identified as Bacillus thuringiensis (Bt). The relation between soil chemical characteristics and the presence of this pathogen may be expressed by the equation iBt = -0,4 + 0,6Ca + 0,07Cu + 0,009Fe - 0,53Mg -0,12Mn + 1,26Zn. Among 83 Bt isolates assayed against Spodoptera fru
Publicado em: 2004
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14. Pathogenicity factors of Bacillus spp isolated from UHT milk / Estudo de fatores de patogenicidade de Bacillus spp isolado em leite UHT
O leite produzido a ultra alta temperatura denominado oficiamente como UHT é o leite de maior aceitação no mercado consumidor brasileiro. Com a finalidade de ampliar o conhecimento sobre a segurança microbiológica do leite UHT, objetivou-se estudar tanto os Bacillus spp, que vêm sendo relatados como contaminantes do leite UHT no Brasil, como os eventua
Publicado em: 2004
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15. REVERSIBLE ACTIVATION FOR GERMINATION AND SUBSEQUENT CHANGES IN BACTERIAL SPORES1
Lee, W. H. (University of Illinois, Urbana) and Z. John Ordal. Reversible activation for germination and subsequent changes in bacterial spores. J. Bacteriol. 85:207–217. 1963.—It was possible to isolate refractile spores of Bacillus megaterium, from a calcium dipicolinate germination solution, that were activated and would germinate spontaneously in dis
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16. Effects of Continuous and Interrupted Radiation on Microorganisms
Various bacterial spores exhibited a wide range of radiation resistance to doses of 0.25 to 2.5 Mrad from a cobalt-60 radiation facility. Bacillus pumilus and Clos-tridium tetani were shown to have the highest degree of resistance when compared with other bacterial sporeformers. B. subtilis E163 was the least resistant of the bacterial spores studied. Dried
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17. PROPERTIES OF ELECTRODIALYZED BACTERIAL SPORES
Harper, M. K. (U.S. Department of Agriculture, Washington, D.C.), H. R. Curran, and M. J. Pallansch. Properties of electrodialyzed bacterial spores. J. Bacteriol. 88:1338–1340. 1964.—Washed spores of Bacillus cereus, B. megaterium, and B. stearothermophilis suspended in distilled water were electrodialyzed at a potential of 250 v, 50 ma, for 6.5 hr, unde
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18. PERMEABILITY OF BACTERIAL SPORES III. : Permeation Relative to Germination1
Black, S. H. (The University of Michigan, Ann Arbor) and Philipp Gerhardt. Permeability of bacterial spores. III. Permeation relative to germination. J. Bacteriol. 83:301–308. 1962.—The passive diffusion of solutes into dormant spores, characterized previously with the test organism Bacillus cereus strain terminalis, has now been examined in relation to
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19. Bacterial Spores as Vaccine Vehicles
For the first time, bacterial spores have been evaluated as vaccine vehicles. Bacillus subtilis spores displaying the tetanus toxin fragment C (TTFC) antigen were used for oral and intranasal immunization and were shown to generate mucosal and systemic responses in a murine model. TTFC-specific immunoglobulin G titers in serum (determined by enzyme-linked im
American Society for Microbiology.
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20. Influence of Exchangeable Ions on Germinability of Bacterial Spores
Rode, L. J. (The University of Texas, Austin), and J. W. Foster. Influence of exchangeable ions on germinability of bacterial spores. J. Bacteriol. 91:1582–1588. 1966.—Native spores of Bacillus megaterium Texas, and H-spores produced by titration of native spores to pH 4 with mineral acid, did not germinate in a solution of alanine and inosine unless a s
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21. Long-range air transmission of bacteria.
Bacterial spores from a sandstorm area north of the Black Sea were transmitted to Sweden by air, giving increased concentrations of viable bacterial spores at two air sampling stations in Sweden.
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22. ACTIVATION OF BACTERIAL ENDOSPORES
A. Keynan (Israel Institute of Biological Research, Ness Ziona, Israel), Z. Evenchik, H. O. Halvorson, and J. W. Hastings. Studies on the activation of bacterial endospores. J. Bacteriol. 88:313–318. 1964.—Heat activation of bacterial endospores was imitated by suspending spores in reducing agents (mercaptoethanol or thioglycolate) or in a pH less than 4
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23. BEHAVIOR OF BACTERIAL SPORES IN AQUEOUS POLYMER TWO-PHASE SYSTEMS
Sacks, L. E. (Western Regional Research Laboratory, Albany, California), and Gordon Alderton. Behavior of bacterial spores in aqueous polymer two-phase systems. J. Bacteriol. 82:331–341. 1961.—Free spores of various species of the Bacillaceae enter the upper phase in a two-phase aqueous polymer system containing polyethylene glycol 4000 and potassium pho
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24. PERMEABILITY OF BACTERIAL SPORES I. : Characterization of Glucose Uptake
Black, S. H. (The University of Michigan, Ann Arbor) and Philipp Gerhardt. Permeability of bacterial spores. I. Characterization of glucose uptake. J. Bacteriol. 82:743–749. 1961.—The total uptake of glucose by masses of clean, dormant spores was measured to assess their permeability. After correction for intercellular space, packed spores of Bacillus ce