Atmospheric plasma discharge sterilization effects on whole cell fatty acid profiles of Escherichia coli and Staphylococcus aureus

As an alternative to conventional sterilization methods the plasma ions created from high voltage produce radicals which have a direct impact on microorganisms in water. Cell membrane fluidity is an important factor in survival as the fluidity allows for essential cell functions in which pH and fatty acids play a major role. This study investigated the effect of plasma application upon pH and fatty acid profiles of Escherichia coli and Staphylococcus aureus. Results showed that plasma sterilization is not predominantly a result of changes to pH levels or fatty acid contents in the bacterial cell membrane.