Disruption Of cells found in soil and sediments is accomplished one of two means. 1 method isolates the bacterial cells from the material before the RNA isolation procedure. That is attained by homogenization of moist soil inside a Waring blender accompanied by a sluggish velocity centrifugation to eliminate fungal biomass https://www.quora.com/Can-nucleic-acid-extraction-be-automated-for-high-throughput-applications/answer/Even-Sa?prompt_topic_bio=1