| κ-卡拉胶邻苯二甲酰基化衍生物的抗氧化活性研究 |
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| 引用本文： | 孙涛,陶慧娜,周冬香,毛芳,谢晶.κ-卡拉胶邻苯二甲酰基化衍生物的抗氧化活性研究[J].天然产物研究与开发,2011,23(3):530-533. |
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| 作者姓名： | 孙涛 陶慧娜 周冬香 毛芳 谢晶 |
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| 作者单位： | 上海海洋大学食品学院,上海,201306 |
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| 基金项目： | 上海市教委重点学科建设项目，上海市生物医药和农业科技领域重点科技项目，2009年上海市优秀学科带头人计划 |
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| 摘 要： | 对κ-卡拉胶进行酸降解得到三种卡拉胶低聚糖,并进一步与苯二甲酰基合成制得三种分子量分别为1450、2520和3430的κ-卡拉胶邻苯二甲酰衍生物(LA、LB和LC)。对产物进行IR表征并对其取代度(DS)进行测定,并检测了产物对羟基自由基.OH、DPPH自由基和过氧化氢的清除活性以及还原能力。结果表明,上述三种κ-卡拉胶邻苯二甲酰衍生物的抗氧化能力强弱顺序依次为:LC>LA>LB,这可能与衍生物的羟基含量、取代基团的性质以及取代度等因素有关。
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| 关 键 词： | κ-卡拉胶 酸降解 邻苯二甲酰基 抗氧化活性 |
Antioxidant Activity of Phthaloyl Derivative of κ-Carrageenan Oligosaccharides |
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| SUN Tao,TAO Hui-na,ZHOU Dong-xiang,MAO Fang,XIE Jing.Antioxidant Activity of Phthaloyl Derivative of κ-Carrageenan Oligosaccharides[J].Natural Product Research and Development,2011,23(3):530-533. |
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| Authors: | SUN Tao TAO Hui-na ZHOU Dong-xiang MAO Fang XIE Jing |
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| Institution: | SUN Tao,TAO Hui-na,ZHOU Dong-xiang,MAO Fang,XIE JingCollege of Food Science,Shanghai Ocean University,Shanghai 201306,China |
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| Abstract: | Three κ-carrageenan oligosaccharides were prepared by acidic degradation of κ-carrageenan.Their phthaloyl derivatives with different molecular weight(LA∶1450;LB∶2520;LC∶3430) were synthesized with phthalic anhydride.The products were characterized by FI-IR,and the degrees of acylation(DS) were determined.Their antioxidant activities were evaluated by the scavenging of hydroxyl radical,1,1-diphenyl-2-picrylhrazyl radicals (DPPH),hydrogen peroxide and reducing power.The results indicated that the orders of antioxidant activities were:LC >LA >LB.It may be related to the content of hydroxyl groups,the nature of substituting group and the substituting degrees. |
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| Keywords: | κ-carrageenan acid degradation phthaloyl antioxidant activity |
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