title: Effect of hydration on the morphology of enzyme powder.
abstract: We report the first direct images of the hydration of protein powders. Using an environmental scanning electron microscope (ESEM) we have taken a series of micrographs of a region of the enzyme (subtilisin) power whilst hydrating the sample. In addition, the sample has been viewed during exposure to toluene vapors. The ESEM is a remarkable new instrument that will have wide applicability in imaging of biological materials in their native environments.
authors.affiliation: Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15261, USA.
authors.forename: K
authors.initials: K
authors.lastname: Roziewski
authors.forename: A J
authors.initials: AJ
authors.lastname: Russell