Centrifugation and ultrafiltration were used to concentrate soluble pr
oteins in the water used to wash minced muscle of sardine caught at tw
o different times of year. The proteins thus extracted were largely of
less than 67 kDa molecular weight. Part of the resulting concentrate
was frozen-stored and part freeze-dried. Irrespective of the season of
capture, samples exhibited high emulsifying capacity and emulsion sta
bility, values being higher in freeze-dried samples. Both properties w
ere virtually unaffected by solutions, with NaCl concentrations rangin
g from 0 to 3%. (C) 1998 Elsevier Science Ltd. All rights reserved.