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Updated: Jan 23, 2026

Combining Fluidic Devices with Microscopy and Flow Cytometry to Study Microbial Transport in Porous Media Across Spatial Scales
Published on: November 25, 2020
Pseudomonas putida KT2440 is HV1 certified, not GRAS
Linde F C Kampers1, Rita J M Volkers1, Vitor A P Martins Dos Santos1,2
1Laboratory of Systems and Synthetic Biology, Wageningen University and Research Centre, Stippeneng 4, 6708, Wageningen, The Netherlands.
Abstract:
Pseudomonas putida is rapidly becoming a workhorse for industrial production due to its metabolic versatility, genetic accessibility and stress-resistance properties. The P. putida strain KT2440 is often described as Generally Regarded as Safe, or GRAS, indicating the strain is safe to use as food additive. This description is incorrect. P. putida KT2440 is classified by the FDA as HV1 certified, indicating it is safe to use in a P1 or ML1 environment.

