a b s t r a c t
Gel properties of gelatin from clown featherback skin as affected by different extraction temperatures
(45, 65 and 85 C) and times (6 and 12 h) were determined. The gelatin recovery was found in the range
of 73.99e95.85 g/100 g. Gelatin had glycine as major amino acid, followed by alanine and proline. Gel
strength generally decreased as extraction temperature and time increased. With increasing temperature
and time, band intensity of a-, b- and g-chains decreased. Gelling temperature (15.53e24.71 C) and
gelling time (11.62e49.27 min) varied, depending on extraction condition. All gelatin could set at 25 C,
except those extracted at 65 C for 12 or at 85 C for 6 and 12 h. Gelatin extracted at 45 C for 6 and 12 h
showed higher gel strength, compared bovine gelatin (P < 0.05). Therefore, properties of gelatin from
clown featherback skin could be influenced by extraction condition.