Presumptive Bacillus cereus. Determination in foods. (NMKL 67, 6. Ed., 2010)

Description:

Presumptive B. cereus is determined quantitatively by plating known amounts of sample on blood agar. After incubation at 30C for 24 ± 3 hours typical colonies with a hemolytic zone are counted. Alternatively replicate plating on blood agar and Bacillus cereus selective agar or the chromogenic plating medium Cereus-Ident-Agar is performed. Alustava Bacillus cereus. Määrittäminen elintarvikkeista. (NMKL 67, 6. painos, 2010)

Kuvaus

Alustava B. cereuksen lukumäärä määritetään viljelemällä tunnetut määrät näytettä veriagarille. Kun on inkuboitu 30 C:ssa 24 ± 3 tuntia, lasketaan tyypilliset pesäkkeet, joilla on hemolyyttinen vyöhyke. Vaihtoehtoisesti tehdään rinnakkaisviljely veriagarille ja Bacillus cereus -selektiiviselle agarille tai kromogeeniselle Cereus-Ident-Agarille.
Price
450,00kr
  • Produkt ID: NMKL67
  • Copyright: NMKL
  • Edition: 2010, 6. ed.

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