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- W164231870 abstract "The study was aimed to determine the antioxidant activity and total phenolic content (TPC) of Sabah rice bran using the Folin-ciocalteau method, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, ferric reducing antioxidant power (FRAP), ferrous ion-chelating (FIC), and lipid peroxidation inhibition (LPI) assay. The effects of different stabilization methods (i.e. microwave heating and refrigeration) on TPC and antioxidant activity were also studied. Three varieties of Sabah rice bran namely MR159, TQR2 and Sarawak were selected. All the studiedsamples contained different phenolic contents with higher concentration in microwave heated samples than refrigerated samples among varieties. Microwave heating shows the order of Sarawak > MR159 > TQR2 while refrigeration shows the order of Sarawak > TQR2 and MR159. In corresponding way, microwave heated samples exhibited significantly stronger DPPH scavenging activity, FRAP and LPI compared to refrigerated sample of any particular varieties in present study by referring to EC50 value. In contrast, refrigerated samples exhibit better FIC activity than microwave heated samples. Rice bran Sarawak overall possessed the strongest AOA in all assay except for FIC assay. With regard to this assay, the antioxidant efficacy of TQR2 was the highest among the studied varieties. Similar orders were observed in TPC and FRAP among the varieties for both stabilization treatment. Contents of total phenols of rice bran were positively correlated with the DPPH scavenging activity (r= 0.6895), FRAP (r= 0.8354) and LPI (r= 0.6995). Based on the result obtained, stabilized Sabah rice bran possessed effective antioxidant properties." @default.
- W164231870 created "2016-06-24" @default.
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- W164231870 date "2010-01-01" @default.
- W164231870 modified "2023-09-27" @default.
- W164231870 title "Antioxidant activity of Sabah rice bran" @default.
- W164231870 hasPublicationYear "2010" @default.
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