Effect of high shear stress on microbial viability

Abstract : Escherichia coli and Saccharomyces cerevisiae suspensions were submitted to controlled shear stress. Above a threshold value shear stress induced a decrease in micro-organism viability. The threshold of shear stress efficiency depended on the micro-organisms, being between 1292Pa and 2770 Pa for S cerevisiae, and about 1250 Pa for E coli. Above 1810 Pa, Ecoli cells were disrupted whereas the S cerevisiae cells remained intact. The higher the cellular concentration, the greater the rate of decrease in viability. Viability loss was influenced by the number of passages through the experimental shear stress device and by exposure time.
Complete list of metadatas

Cited literature [16 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02143250
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Wednesday, May 29, 2019 - 11:13:59 AM
Last modification on : Friday, October 11, 2019 - 8:22:33 PM

File

Lange_22845.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Hélène Lange, Patricia Taillandier, Jean-Pierre Riba. Effect of high shear stress on microbial viability. Journal of Chemical Technology and Biotechnology, Wiley, 2001, 76 (5), pp.501-505. ⟨10.1002/jctb.401⟩. ⟨hal-02143250⟩

Share

Metrics

Record views

11

Files downloads

35