title: [Radiosensitivity of Vibrio cholerae O1 incorporated in oysters, to (60)CO].
abstract: OBJECTIVE
  Evaluate the effect of ionizing irradiation by 60Co on Vibrio cholerae O1, El-Tor, Ogawa, non-toxigenic, incorporated in live oysters Crassostrea brasiliana.
  
  
  METHODS
  Samples of oysters were selected from Cananéia town in the South coast of S. Paulo state, Brazil, contaminated with Vibrio cholerae and irradiated with 60Co at 0.5 and 1.0 kGy dosages.
  
  
  RESULTS
  Showed significant reductions of the initial number of V. cholerae, ranging from 3.4 x10(7) to 10(3) and 10(2), respectively. The D10 values related with the respective doses of irradiation were 0.173 and 0.235.
  
  
  CONCLUSIONS
  Considering a 6 value as safety factor, it is concluded that 1.41 kGy irradiation dosage is necessary to eliminate a high number of V. cholerae viable cells in oysters. Controls were used in the experiment.
authors.affiliation: Instituto de Pesquisas Energéticas e Nucleares, São Paulo, SP, Brasil.
authors.forename: I R
authors.initials: IR
authors.lastname: de Moraes
authors.forename: N L
authors.initials: NL
authors.lastname: Del Mastro
authors.forename: M
authors.initials: M
authors.lastname: Jakabi
authors.forename: D S
authors.initials: DS
authors.lastname: Gelli
mesh_terms: D000818:Animals; D005514:Food Irradiation; D005516:Food Microbiology; D010125:Ostreidae / Q000382:microbiology*; D011829:Radiation Dosage; D011836:Radiation Tolerance; D012758:Shellfish / Q000382:microbiology*; D014734:Vibrio cholerae / Q000528:radiation effects*