Abstract
Previous investigations have reported that bacterial suspension cultures grow to higher stationary concentrations in space flight than on Earth; however, none of these investigations included extensive ground controls under varied inertial conditions. This study includes extensive controls and cell-growth data taken at several times during lag phase, log phase, and stationary phase of Escherichia coli and Bacillus subtilis. The Marquardt-Levenberg, least-squares fitting algorithm was used to calculate kinetic growth parameters from the logistic bacterial growth equations for space-flight and control growth curves. Space-flight cultures grew to higher stationary-phase concentrations and had shorter lag-phase durations. Also, evidence was found for increased exponential growth rate in space.
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Received: 27 February 1998 / Received revision: 21 August 1998 / Accepted: 3 September 1998
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Kacena, M., Merrell, G., Manfredi, B. et al. Bacterial growth in space flight: logistic growth curve parameters for Escherichia coli and Bacillus subtilis . Appl Microbiol Biotechnol 51, 229–234 (1999). https://doi.org/10.1007/s002530051386
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DOI: https://doi.org/10.1007/s002530051386