Reinterpretation of Microbial Survival Curves

摘要: The heat inactivation of microbial spores and the mortality vegetative cells exposed to or a hostile environment have been traditionally assumed be governed by first-order reaction kinetics. concept thermal death time standard methods calculating safety commercial preservation processes are also based on this assumption. On closer scrutiny, however, at least some semilogarithmic survival curves, which considered linear in fact slightly curved. This curvature can significant effect time, is determined extrapolation. latter considerably smaller larger depending whether curve has downward an upward concavity how experimenter chooses calculate decimal reduction time. There numerous reports organisms whose curves clearly characteristically nonlinear, it unlikely that these observations all due ...