衍生南瓜多糖的抗氧化活性。
The antioxidant activity of derivatized cushaw polysaccharides.
机构信息
Active Carbohydrate Research Institute, Chongqing Key Laboratory of Inorganic Functional Materials, Chongqing Normal University, Chongqing 401331, China.
Active Carbohydrate Research Institute, Chongqing Key Laboratory of Inorganic Functional Materials, Chongqing Normal University, Chongqing 401331, China.
出版信息
Int J Biol Macromol. 2019 May 1;128:1-4. doi: 10.1016/j.ijbiomac.2019.01.091. Epub 2019 Jan 22.
The cushaw polysaccharide was obtained by hot water extraction. Two sulfated cushaw polysaccharides (SP1 and SP2) with different degrees of substitution and two phosphorylated cushaw polysaccharides (PP1 and PP2) with different degrees of substitution were prepared, respectively. Their structures were characterized by IR, C NMR and P NMR spectra, respectively. It indicated that the introduction of phosphate groups helped remove hydroxyl radicals. All the derivatives enhanced the scavenging of superoxide anions. It would provide a good basis for studying the antioxidant activity of cushaw polysaccharide and their derivatives.
南瓜多糖通过热水提取得到。分别制备了两种取代度不同的硫酸化南瓜多糖（SP1 和 SP2）和两种取代度不同的磷酸化南瓜多糖（PP1 和 PP2）。它们的结构分别通过红外光谱、碳核磁共振谱和磷核磁共振谱进行了表征。结果表明，引入磷酸基团有助于清除羟基自由基。所有衍生物均增强了对超氧阴离子的清除能力。这将为研究南瓜多糖及其衍生物的抗氧化活性提供良好的基础。
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