Rheological characteristics of microbial suspensions of Pseudomonas aeruginosa and Bacillus cereus

Sameer Al-Asheh; Basim Abu-Jdayil; Nadia Abunasser; Afaf Barakat

doi:10.1016/S0141-8130(02)00006-5

Rheological characteristics of microbial suspensions of Pseudomonas aeruginosa and Bacillus cereus

Sameer Al-Asheh, Basim Abu-Jdayil, Nadia Abunasser, Afaf Barakat

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

The rheological properties of the bacteria Pseudomonas aeruginosa and Bacillus cereus have been investigated. The apparent viscosity of the bacterial suspensions has been measured at different conditions. The results showed that the bacterial suspensions' apparent viscosity increased with increasing biomass concentration of each of these strains. The P. aeruginosa suspension followed shear thinning behavior while B. cereus suspension followed shear thickening behavior. The shear stress versus shear rate experimental data were best represented by the Herschel-Bulkley model. The apparent viscosity of the P. aeruginosa and B. cereus suspensions decreased with increasing temperature. The relationship between the apparent viscosity and the shearing time highlighted the rheopectic behavior of the suspensions used in this work.

Original language	English
Pages (from-to)	67-74
Number of pages	8
Journal	International Journal of Biological Macromolecules
Volume	30
Issue number	2
DOIs	https://doi.org/10.1016/S0141-8130(02)00006-5
Publication status	Published - Apr 8 2002
Externally published	Yes

Keywords

Apparent viscosity
Bingham
Hershel-Bulkey
Power law
Shear rate
Shear stress

ASJC Scopus subject areas

Structural Biology
Biochemistry
Molecular Biology
Economics and Econometrics
General Energy

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10.1016/S0141-8130(02)00006-5

Cite this

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title = "Rheological characteristics of microbial suspensions of Pseudomonas aeruginosa and Bacillus cereus",

abstract = "The rheological properties of the bacteria Pseudomonas aeruginosa and Bacillus cereus have been investigated. The apparent viscosity of the bacterial suspensions has been measured at different conditions. The results showed that the bacterial suspensions' apparent viscosity increased with increasing biomass concentration of each of these strains. The P. aeruginosa suspension followed shear thinning behavior while B. cereus suspension followed shear thickening behavior. The shear stress versus shear rate experimental data were best represented by the Herschel-Bulkley model. The apparent viscosity of the P. aeruginosa and B. cereus suspensions decreased with increasing temperature. The relationship between the apparent viscosity and the shearing time highlighted the rheopectic behavior of the suspensions used in this work.",

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T1 - Rheological characteristics of microbial suspensions of Pseudomonas aeruginosa and Bacillus cereus

AU - Al-Asheh, Sameer

AU - Abu-Jdayil, Basim

AU - Abunasser, Nadia

AU - Barakat, Afaf

PY - 2002/4/8

Y1 - 2002/4/8

N2 - The rheological properties of the bacteria Pseudomonas aeruginosa and Bacillus cereus have been investigated. The apparent viscosity of the bacterial suspensions has been measured at different conditions. The results showed that the bacterial suspensions' apparent viscosity increased with increasing biomass concentration of each of these strains. The P. aeruginosa suspension followed shear thinning behavior while B. cereus suspension followed shear thickening behavior. The shear stress versus shear rate experimental data were best represented by the Herschel-Bulkley model. The apparent viscosity of the P. aeruginosa and B. cereus suspensions decreased with increasing temperature. The relationship between the apparent viscosity and the shearing time highlighted the rheopectic behavior of the suspensions used in this work.

AB - The rheological properties of the bacteria Pseudomonas aeruginosa and Bacillus cereus have been investigated. The apparent viscosity of the bacterial suspensions has been measured at different conditions. The results showed that the bacterial suspensions' apparent viscosity increased with increasing biomass concentration of each of these strains. The P. aeruginosa suspension followed shear thinning behavior while B. cereus suspension followed shear thickening behavior. The shear stress versus shear rate experimental data were best represented by the Herschel-Bulkley model. The apparent viscosity of the P. aeruginosa and B. cereus suspensions decreased with increasing temperature. The relationship between the apparent viscosity and the shearing time highlighted the rheopectic behavior of the suspensions used in this work.

KW - Apparent viscosity

KW - Bingham

KW - Hershel-Bulkey

KW - Power law

KW - Shear rate

KW - Shear stress

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Rheological characteristics of microbial suspensions of Pseudomonas aeruginosa and Bacillus cereus

Abstract

Keywords

ASJC Scopus subject areas

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