128. Aris R, Amundson NR (1973) Mathematical methods in chemical engineering. Prentice
Hall, Engelwood Cliffs, NJ
129. Amory DE, Moses N, Hermesse MP, Leonard AJ, Rouxhet PG (1988) FEMS Microbiol Lett
49 :197
130. Moses N, Leonard AJ, Rouxhet PG (1988) Biochim Biophys Acta 945 : 324
131. Arnold WN (1981) Physical aspects of the yeast cell envelope. In: Arnold WN (ed) Yeast
cell envelopes: biochemistry, biophysics and ultrastructure, vol 1. CRC Press, p 25
132. Andrews GF, Fonta JP, Marrotta E, Stroeve P (1984) Chem Eng J 29 : B39
Received November 1999
Recovery of Proteins and Microorganisms from Cultivation Media by Foam Flotation
233