Limits...
In vitro antioxidant activities of sulfated derivatives of polysaccharides extracted from Auricularia auricular.

Zhang H, Wang ZY, Yang L, Yang X, Wang X, Zhang Z - Int J Mol Sci (2011)

Bottom Line: In this research, two types of sulfated polysaccharide derivatives were successfully synthesized.Available data obtained with in vitro measurements indicates that the sulfated groups of AAAP and NAAP played an important role on antioxidant activity.In sum, the research demonstrates that the antioxidant activity of sulfated polysaccharide derivatives in vitro has a potential significance for seeking new natural antioxidant protective agents.

View Article: PubMed Central - PubMed

Affiliation: School of Food Science and Engineering, Harbin Institute of Technology, 73 HuangHe Road, NanGang District, Harbin 150090, China; E-Mails: zhhua@hit.edu.cn (H.Z.); ly6617@hit.edu.cn (L.Y.); yangxin@hit.edu.cn (X.Y.).

ABSTRACT
In this research, two types of sulfated polysaccharide derivatives were successfully synthesized. Their antioxidant activities were investigated by employing various established in vitro systems. In addition, the degree of sulfation was evaluated using ion-chromatography and IR spectra. The results verify that, when employing scavenging superoxide radical tests, both the sulfation of acid Auricularia auricular polysaccharides (SAAAP) and the sulfation of neutral Auricularia auricular polysaccharides (SNAAP) derivatives possessed considerable antioxidant activity and had a more powerful antioxidant competence than that of the native non-sulfated polysaccharides (AAAP and NAAP). On the other hand, AAAP and NAAP exhibited stronger activity on scavenging both the hydroxyl radical and lipid peroxidation. Available data obtained with in vitro measurements indicates that the sulfated groups of AAAP and NAAP played an important role on antioxidant activity. In sum, the research demonstrates that the antioxidant activity of sulfated polysaccharide derivatives in vitro has a potential significance for seeking new natural antioxidant protective agents.

Show MeSH

Related in: MedlinePlus

Gel-permeation Chromatography (GPC) of standard dextran (a–c), and sample (AAAP, SNAAP, SAAAP and SNAAP) (d).
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
getmorefigures.php?uid=PMC3116191&req=5

f1-ijms-12-03288: Gel-permeation Chromatography (GPC) of standard dextran (a–c), and sample (AAAP, SNAAP, SAAAP and SNAAP) (d).

Mentions: A typical size-exclusion GPC chromatogram of SAAAP and SNAAP gave a peak region of 4–10 min (Figure 1). The retention time of SAAAP and SNAAP was then plotted on the same graph and weight-average molecular weight of the SAAAP and SNAAP were 8.09 × 106 and 6.53 × 106, when referenced to a standard dextran. Moreover, molecular mass distribution of sulfated AAAP and NAAP were narrower than that of native non-sulfated polysaccharide (AAAP and NAAP). This shows that sulfated AAAP and NAAP were two homogeneous samples.


In vitro antioxidant activities of sulfated derivatives of polysaccharides extracted from Auricularia auricular.

Zhang H, Wang ZY, Yang L, Yang X, Wang X, Zhang Z - Int J Mol Sci (2011)

Gel-permeation Chromatography (GPC) of standard dextran (a–c), and sample (AAAP, SNAAP, SAAAP and SNAAP) (d).
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC3116191&req=5

f1-ijms-12-03288: Gel-permeation Chromatography (GPC) of standard dextran (a–c), and sample (AAAP, SNAAP, SAAAP and SNAAP) (d).
Mentions: A typical size-exclusion GPC chromatogram of SAAAP and SNAAP gave a peak region of 4–10 min (Figure 1). The retention time of SAAAP and SNAAP was then plotted on the same graph and weight-average molecular weight of the SAAAP and SNAAP were 8.09 × 106 and 6.53 × 106, when referenced to a standard dextran. Moreover, molecular mass distribution of sulfated AAAP and NAAP were narrower than that of native non-sulfated polysaccharide (AAAP and NAAP). This shows that sulfated AAAP and NAAP were two homogeneous samples.

Bottom Line: In this research, two types of sulfated polysaccharide derivatives were successfully synthesized.Available data obtained with in vitro measurements indicates that the sulfated groups of AAAP and NAAP played an important role on antioxidant activity.In sum, the research demonstrates that the antioxidant activity of sulfated polysaccharide derivatives in vitro has a potential significance for seeking new natural antioxidant protective agents.

View Article: PubMed Central - PubMed

Affiliation: School of Food Science and Engineering, Harbin Institute of Technology, 73 HuangHe Road, NanGang District, Harbin 150090, China; E-Mails: zhhua@hit.edu.cn (H.Z.); ly6617@hit.edu.cn (L.Y.); yangxin@hit.edu.cn (X.Y.).

ABSTRACT
In this research, two types of sulfated polysaccharide derivatives were successfully synthesized. Their antioxidant activities were investigated by employing various established in vitro systems. In addition, the degree of sulfation was evaluated using ion-chromatography and IR spectra. The results verify that, when employing scavenging superoxide radical tests, both the sulfation of acid Auricularia auricular polysaccharides (SAAAP) and the sulfation of neutral Auricularia auricular polysaccharides (SNAAP) derivatives possessed considerable antioxidant activity and had a more powerful antioxidant competence than that of the native non-sulfated polysaccharides (AAAP and NAAP). On the other hand, AAAP and NAAP exhibited stronger activity on scavenging both the hydroxyl radical and lipid peroxidation. Available data obtained with in vitro measurements indicates that the sulfated groups of AAAP and NAAP played an important role on antioxidant activity. In sum, the research demonstrates that the antioxidant activity of sulfated polysaccharide derivatives in vitro has a potential significance for seeking new natural antioxidant protective agents.

Show MeSH
Related in: MedlinePlus