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

AUTOR(ES)

Scherrer, R

RESUMO

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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