Abstract
A way of characterizing cell size distribution in suspensions of single-cell microorganisms is suggested, based on the first and second moments around origin. Suspension density may be predicted on the basis of the mixing law and the density of microbial dry matter, for suspensions ofSaccharomyces cerevisiae, Candida lipolytica, andAspergillus niger. Newtonian viscosities were correlated using regression analysis by η=Aexp(BC m)exp(D/t); another correlation is presented for the calculation of surface tension in single-cell microbial suspensions. All the relations are valid in the range of concentrations up to 15% (w/v) and for temperatures between 15° and 35°C. The formulae presented may be used in other hydraulic studies.
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References
Aiba S., Kitai S., Ishida N.: Shape and size of yeast cell.J. Gen. Appl. Microbiol. 8, 99 (1962a).
Aiba S., Kitai S., Ishida N.: Density of yeast cell and viscosity of its suspension.J. Gen. Appl. Microbiol. 8, 103 (1962b).
Davies J. T., Rideal E. K.: Interfacial Phenomena. Academic Press, New York 1963.
Haddard S. A., Lindegren C. G.: A method for determining the weight of an individual yeast cell.Appl. Microbiol. 1, 153 (1953).
Koga S., Kuribayashi C., Nonomura K.: Studies on the rheological volume of cell suspensions.J. Gen. Appl. Microbiol. 5, 35 (1959).
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Štěrbáček, Z. Physical properties of microbial suspensions. Folia Microbiol 17, 117–125 (1972). https://doi.org/10.1007/BF02877909
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DOI: https://doi.org/10.1007/BF02877909