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. 1977 Feb;129(2):1162-4.
doi: 10.1128/jb.129.2.1162-1164.1977.

Density, porosity, and structure of dried cell walls isolated from Bacillus megaterium and Saccharomyces cerevisiae

R Scherrer, E Berlin, Gerhardt

Density, porosity, and structure of dried cell walls isolated from Bacillus megaterium and Saccharomyces cerevisiae

R Scherrer et al. J Bacteriol. 1977 Feb.

Abstract

Helium displacement and nitrogen adsorption techniques were used to determine the density and porosity, respectively, of freeze-dried cell walls isolated from Bacillus megaterium KM and Saccharomyces cerevisiae. The densities were 1.302 and 1.180 g/cm3, respectively, suggesting noncrystalline solids. The porosities were extremely small, indicating that the cell walls had collapsed and become essentially impervious upon lyophilization.

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