ArticleBiosafety and health2025
Evaluating viral inactivation in the liquid waste stream from a viral total nucleic acid extraction kit for safe disposal.
Article in Biosafety and health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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4 authors.
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Abstract
Safe laboratory processing requires mitigating risks from the release of pathogens into the environment through generated waste streams. This study evaluated the inactivation kinetics of bacteriophage MS2 as a surrogate for infectious viruses in liquid waste produced from total nucleic acid extractions of wastewater. The goal was to determine a waste handling protocol that ensures sufficient viral infectivity loss (i.e., inactivation) for safe disposal. Liquid waste was generated using a viral total nucleic acid extraction kit (Wizard® Enviro Total Nucleic Acid Kit, Promega, The United States of America) containing guanidinium chloride, isopropanol, ethanol, and other residual reagents. MS2 phage was artificially added into liquid waste, and inactivation was monitored over 24 h using double agar layer plaque assays. A one-phase exponential decay model was applied to estimate the time required for safe disposal, showing MS2 inactivation followed an exponential decay pattern, achieving a predicted 6-log
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