| dc.description.abstract | Effect of extraction conditions including water to basil seeds ratio (1:20, 1:30,
1:40, 1:50, and 1:60), hydration time (5min, 15min, 25min, 35min, and 45min),
and ultrasound (with frequency of 40kHz) on the gum yield from Ocimum
gratissimum seeds were studied in this research. Determination of some
properties (ash, moisture, lipid, protein, and carbohydrate content) and viscosity
of basil seed gum were carried out in this study. In experiment 1, extraction of
gum from basil seeds was performed in constant amount of seeds and different
water volume, in both with and without ultrasonicating step. The gum yield
changed in different ratio of water and seed and reached highest amount (about
24%) when the water to seed ratio was 1:50. In experiment 2, variation of
hydration time was performed and gum yield was recorded. The result showed
that hydration time also affect the gum yield. At hydration time of 35 minutes, the
amount of gum collected was maximum (about 23%-24%) and no changes was
observed when increasing hydration time. In both experiment, sample with
ultrasound treatment always provide higher gum yield comparing to without
ultrasound. Composition of gum and viscosity of gum emulsion in the best
extraction conditions were also analyzed and calculated. Basil seed gum contains
moisture (9%-10%), lipid (1.6%-1.8%), carbohydrate (about 77%), protein
(3.1%-3.5%), ash (7.5%-9%) and basil seed gum emulsion was pseudoplastic –
which is similar to xanthan gum (a very popular additives used in food industry). | en_US |
