Low-temperature (--195 C) adsorption of N.~ was used to study the physical surface features of whole and skimmilk powders produced by different drying techniques. Specific surface areas were calculated using the Brunauer-Emmett-Teller (BET) multilayer adsorption theory. All the milk powders exhibited rather low surface areas (,~ .1-.6 m~/g) and abnormally low values for the energy of adsorption of N~. Comparison of these surface areas with tho.se obtained by permeametry yielded information on the relative porosities of the various powders. Conventional spray-dried powders were less porous than the instantized powders and the spray-dried foams.
No takes yet. Share an insight, caveat, or question.
Berlin et al. (1964) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: