WANG Wu-jing,YANG Yan-ni,DING Zi-he,et al.Structures Characteristics and Bioactivity of Polysaccharide CALB-2 from Aurantii Fructus[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(16):154-160.
WANG Wu-jing,YANG Yan-ni,DING Zi-he,et al.Structures Characteristics and Bioactivity of Polysaccharide CALB-2 from Aurantii Fructus[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(16):154-160. DOI: 10.13422/j.cnki.syfjx.20201714.
Structures Characteristics and Bioactivity of Polysaccharide CALB-2 from Aurantii Fructus
To isolate and purify a polysaccharide CALB-2 fraction from Aurantii Fructus,and analyze its basic chemical structure
morphological characteristics and bioactivity.
Method
2
A refined CALB-2 was obtained from Aurantii Fructus by hot water extraction,then separated and purified by ion exchange resin,ion exchange agarose gel and propylene dextran gel to obtain homogeneous polysaccharide CALB-2. The molecular mass of CALB-2 was determined by high performance liquid chromatography (HPLC). Monosaccharide composition analysis of CALB-2 was conducted by methylation analysis and Smith degradation. Structural analysis and morphological characterization were conducted by infrared scanning (IR) and scanning electron microscopy (SEM) analysis. Antioxidant activity of CALB-2 was studied by using H
2
O
2
-induced cardiomyocyte oxidative damage model.
Result
2
CALB-2 was a homogeneous polysaccharide and the molecular weight of CALB-2 was estimated to be 3.57×10
7
Da,which was proved to be a kind of highly branched acidic polysaccharides in IR analysis
methylation analysis and Smith degradation
mainly present in form of 1→3,4 bonds. Through SEM observations,we indicated that the molecular morphology of CALB-2 was amorphous solid. The
in vitro
activity test showed that CALB-2 had obvious protective effects on injury of H9c2 myocardial cells induced by H
2
O
2
.
Conclusion
2
CALB-2 is a kind of homogeneous polysaccharide extracted from Aurantii Fructus, with an anti-cardiomyocyte oxidative damage effect
laying a theoretical foundation for further study of Aurantii Fructus polysaccharides.
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