Selenium bio-absorption and antioxidant capacity in mice treated by selenium modified rice germ polysaccharide

Preparation, characterization, antioxidant and antiglycation activities of selenized polysaccharides from blackcurrant

“…Therefore, different monosaccharide units and their sequence in the polysaccharides from different plant sources result in different selenium binding rate. 13 In addition, the prepared selenized polysaccharides in this study displayed higher selenium content (171-821 mg g À1 ) than the selenium modied polysaccharide from Cordyceps militaris (16.3-576.4 mg g À1 ) reported by Zhu et al, 17 which may be caused by the difference in the structure of polysaccharides extracted from different materials. 5,13 Based on the comprehensive consideration of yield, selenium content and DPPHc scavenging activity, the selenized polysaccharides obtained at groups 5-7 were selected for the subsequent study and were termed as "SBP-1", "SBP-2" and "SBP-3", respectively.…”

“…Compared the results, the scavenging effect of PSBPs against ABTS + c was much higher than that of PBP, which was consistent with previous ndings that the selenized polysaccharides exhibit higher antioxidant activities than untreated polysaccharide. 13,24 Simultaneously, ABTS + c scavenging capacity of PSBPs increased with the improvement of selenium content. These results demonstrated that selenium signicantly affected the antioxidant activity of blackcurrant polysaccharides, and the introduced selenium groups could excite the hydrogen atom-donates in anomeric region.…”

“…In general, the polysaccharides contain hydroxyl, carboxyl and other groups that are easy to react with other compounds, providing a basis for the chemical modication. 4,13 Meanwhile, chemical modication can improve the physicochemical properties, functional properties and biological activities of natural polysaccharides. 5,13 As a result, more and more studies have focused on the chemical modication of the natural polysaccharides.…”

“…4,13 Meanwhile, chemical modication can improve the physicochemical properties, functional properties and biological activities of natural polysaccharides. 5,13 As a result, more and more studies have focused on the chemical modication of the natural polysaccharides. 4,5,14 Currently, selenized treatment is the most concerned method for polysaccharides modication.…”

“…When selenium combines with polysaccharides, the selenized polysaccharides will possess the duple activities of selenium and polysaccharides. 13 Moreover, the special selenium-oxygen bonds are formed in selenized polysaccharides, which makes it possible to be easily absorbed and utilized by human body as an organic selenium supplement. 15,16 Many research ndings have conrmed the positive effects of selenized modication on native polysaccharides from various resources, such as Radix hedysari, 16 Momordica charantia L. 4 and Cordyceps militaris, 17 etc.…”