What is the expected yield of genomic DNA isolated from bacteria with the DNeasy Blood & Tissue or QIAamp DNA Mini Kit?
FAQ ID -632

The expected yield of genomic DNA isolated from bacteria with the DNeasy Blood & Tissue Kit or the QIAamp DNA Mini Kit is approximately 10 ug of DNA per 2x 109 bacterial cells. Note that yields of genomic DNA will vary depending on bacterial strain, quality of the starting material, growing conditions, and the amount of material processed.