The effect of inoculum age and solid versus liquid propagation on inoculum quality of an industrial Bacillus licheniformis strain

Autor: Hornbæk, Tina, Nielsen, Allan K., Dynesen, Jens, Jakobsen, Mogens
Předmět:
Zdroj: FEMS Microbiology Letters; Jul2004, Vol. 236 Issue 1, p145-151, 7p
Abstrakt: Shorter lag phases were obtained in cultivations of Bacillus licheniformis using early-compared to late-stationary growth phase inocula and using liquid versus solid propagation medium. Flow cytometry and fluorescence ratio imaging microscopy (FRIM) after staining with 5(6)-carboxyfluorescein diacetate succinimidyl ester (CFDA-SE), confirmed that liquid early-stationary growth phase inoculum had a higher vitality and was more homogeneous than solid late-stationary growth phase inoculum. DNA-microarray analyses indicated that liquid early-stationary growth phase inoculum was in a more active state in terms of cell multiplication whereas solid late-stationary growth phase inoculum was induced to some spore formation potentially causing delayed growth initiation. [Copyright &y& Elsevier]
Databáze: Complementary Index