| dc.description.abstract | Pigmented rice has hight antioxidant nature, and its properties contribute
to the successful formulation of nutraceutical food products. Based on this
background, this research was aimed at determining the physicochemical,
functional and antioxidant properties of ten pigmented Indonesian rice
varietiels - Merah Saleman, Mota, Beureum Taleus, Anak Doro M, Cempo
Salamet, Ketan Putri, Ketan Hitam I, Ketan Hitam II, Gogo Niti II, and Care
Hitam. The physic properties and proximate analysis of pigmented rice
were showed a significant difference at p<0.05, except for crude fiber. The
sample with the lowest amylose showed the highest peak, trough, and final
viscosities, but with low pasting temperature. The gelatinization enthalpy
ranged from 0.82 - 1.33 J/g, and the sample with the highest amylose had the
lowest gelatinization peak. The functional properties of the water absorption
index ranged from 4.22 - 7.63 g/g, the water solubility index was between
3.62 - 7.40%, the oil absorption index varied from 0.88 - 1.36 g/g, while the
swelling power was between 5.31 - 8.42 g/g. Furthermore, the antioxidant
properties of the samples measured in terms of the phenolic content ranged
from 2.17 - 10.60 mg GAE/g, the flavonoids varied from 0.43 - 2.31 mg
QE/g and their activity used the stable 2,2-diphenyl-1-picrylhydrazyl (DPPH)
and hydroxyl radicals. The total flavonoid in the phenolic component was
positively correlated with the antioxidant activity. In conclusion, the ten
pigmented rice showed a wide range of physicochemical, functional, and
antioxidant properties, making the samples useful for the formulations of
various products with health benefits. | en_US |
