Antioxidant properties of sugarbeet fibers

作者：Sakac Marijana B^*; Gyura Julianna F; Misan Aleksandra C; Seres Zita I

来源：Zuckerindustrie, 2009, 134(6): 418-425.

• sugarbeet fiber
• Fibrex (R)
• antioxidant properties
• total phenolic content
• DPPH
• AOA
• reducing power
• chelating activity

The present study estimated the physico-chemical characteristics of sugarbeet fibers obtained from sugarbeet by extraction with sulfurous acid (untreated fiber - UTF), fiber treated with hydrogen peroxide Solution (treated fiber - TF) and commercially available Fibrex (R). In addition, the antioxidant properties of ethanolic extracts from above the mentioned fibers were tested using: Folin-Ciocalteu reagent, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay, antioxidant activity/beta-carotene bleaching test (AOA), chelating activity on Fe(2+) and Fe(3+)/Fe(2+) reducing power. The results obtained clearly show that the ethanolic extract from TF demonstrated the lowest antioxidant activity in all the assays, with the exception of chelating activity. However, TF possessed the most favorable physico-chemical characteristics. In order to provide multifunctional activity of TF, optimization of production procedure has to be considered.

• 出版日期2009-6