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

      Fems Microbiology Letters

      Transcription, Genetic, genetics, growth & development, Enzymes, biosynthesis, Fermentation, Gene Expression Regulation, Bacterial, Industrial Microbiology, Oligonucleotide Array Sequence Analysis, Bacillus

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          Abstract

          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.

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          Journal
          15212804
          10.1016/j.femsle.2004.05.035

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