Antioxidative effects of stabilized and unstabilized defatted rice bran methanolic extracts on the stability of rice bran oil under accelerated conditions
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In this article, the antioxidant activity against the synthetic 1, 1-diphenyl-2-picrylhydrazyl radical, and β-carotene-linoleic acid assay of the methanolic extracts of defatted rice bran from stabilized and unstabilized rice brans were determined and compared with those of BHA (synthetic antioxidant).Abstract:
The present research assessed the antioxidant activity against the synthetic 1, 1-diphenyl-2-picrylhydrazyl radical, and β-carotene-linoleic acid assay of the methanolic extracts of defatted rice bran from stabilized and unstabilized rice bran. The effects of the extracts (0.1 and 0.25% w/w) on the oxidative stability of refined-bleached rice bran oil were determined and compared with those of BHA (synthetic antioxidant). The study was carried out over a 168 hr period at 70°C and the progression of oxidation was measured by peroxide value, p-anisidine value, and thiobarbituric acid-reactive substances (TBARS). The relative % of residual α-tocopherol and γ-oryzanol of the rice bran oil containing methanolic extracts of stabilized and unstabilized defatted rice bran during storage at 70°C were studied.read more
Citations
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References
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Natural antioxidants from residual sources.
Andrés Moure,José Manuel Cruz,Daniel Franco,J.Manuel Domı́nguez,Jorge Sineiro,Herminia Domínguez,María José Núñez,J.Carlos Parajó +7 more
TL;DR: In this paper, the authors focus on the extraction of polyphenols from agricultural and industrial wastes, and summarize available data on the factors affecting their antioxidant activity and stability, and, in some cases, the reported major active compounds identified.
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Antioxidant properties and components of some commercially available varieties of rice bran in Pakistan
TL;DR: In this article, the antioxidant activity of five indigenous rice bran varieties, i.e., Rice bran-Super kernel (RB-kr), RB-s2, RB-S2-2000, RBs2-386, RBS-386 and RB-86, collected from the same agricultural plots, was evaluated by measurement of total phenolic content, antioxidant activity in linoleic acid system, reducing power, metal chelating ability, scavenging capacity, and conjugated dienes.
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Antioxidant Activity of Hydroxytyrosol Acetate Compared with That of Other Olive Oil Polyphenols
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Identification and quantitation of γ‐oryzanol components and simultaneous assessment of tocols in rice bran oil
TL;DR: In this paper, a reverse-phase high-performance liquid chromatography method was developed for the simultaneous separation and quantification of tocopherols, tocotrienols and oryzanols present in rice bran oil.