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Authors
Advisor(s)
Abstract(s)
The study of the mechanical properties of living bacteria in a liquid rich medium,
environment commonly used in laboratorial settings, opens a new perspective on the
bacterial physiology and behaviour during population growth. In this work, the human
pathogen Staphylococcus aureus was used as a study model due to its coccoid shape and regular morphology: MRSA strain COL [1] and its mutant strain RUSAL9 [2], which presents a deficient daughter-cell separation mechanism. Cultures were grown under a
mechanical stress solicitation in parallel with optical density monitorization. Complex
viscoelastic behaviour was revealed by these bacterial systems [3]. In particular the shear viscosity measurement during growth time, for a constant shear rate, showed an unexpected behaviour that cannot be observed by common optical experimental techniques.
Description
Keywords
Staphylococcus aureus Rheology Growth
Citation
PORTELA, Raquel; [et al] – Staphylococcus aureus strains rheology during growth. In 4th Iberian Meeting on Rheology. Fundamental and Applied Rheology (IBEREO 2013). Málaga, Spain. Pp. 1-3