Metal Chelating Activity Of Rice Bran And Rice Husk

Kartini, Kartini and Djoenedi, Rosi Yunita and Azminah, Azminah (2011) Metal Chelating Activity Of Rice Bran And Rice Husk. In: The 2nd International Conference On Pharmacy and Advanced Pharmaceutical Sciences, 19 - 20 July 2011, Faculty of Pharmacy, Universitas Gajah Mada.

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Free radical-induced oxidative stress is the root cause for many human diseases. Naturally occurring antioxidant supplements from plants are vital to counter the oxidative damage in cells. The main objective of the present study was to explore and compare the antioxidant activity of rice bran and rice husk extracted from rice milling waste. N-hexane extracts of rice bran and rice husk were used to study their in vitro antioxidant activities using metal chelating activity (iron (II)-phenanthroline complex). Vitamin E was used as standard material. The ability of the sample to chelate metal ion (ferrous ion) was calculated relative to the control and expressed as % inhibition. % inhibition of two samples were analyzed with student test (P=0.05). The results have shown that at the same concentration (10 ppm), rice husk extract, rice bran extract and vitamin E have the different activity, i.e.: 0.51%, 2.27% and 5.55% in inhibition of chelat formation, respectively. In conclusion, metal chelating activity of rice husk extract is smaller than rice bran extract. Activity of rice bran extract is almost a half from vitamin E, so this

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: rice bran, rice husk, metal chelating activity, antioxidant
Subjects: Q Science > QR Microbiology
Divisions: Faculty of Pharmacy > Department of Pharmacy
Depositing User: Karyono
Date Deposited: 12 Oct 2012 06:50
Last Modified: 22 Nov 2023 08:09

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