Jackfruit seeds were purchased at a local market in An Giang,
Vietnam. The seeds were washed, and the white aril was peeled off.
Next, the thin brown spermoderm covers were removed following
the method of Tulyathan et al. (2002). The JFSS was isolated by wetpowdering
the raw material with 0.05 mol/L aqueous NaOH,
screening the slurry through a 100mmtesting
sieve, and subjecting
it to centrifugation (8000 g, 15 min). The sediment was resuspended
in distilled water and centrifuged again. The rawstarch was
washed four times with two volumes of ethanol to completely
remove organic-soluble components, especially lipids, and was
then washed several times more with distilled water until the
starch was free of color. The starch was dried in an air oven at
40 ± 1 C until the final moisture content was