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时间:2020-03-27
《肉苁蓉多糖锌的制备、表征及抗氧化活性.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2015年11月化学研究584第26卷第6期CHEMICALRESEARCHhttp://hxya.cbpt.cnki.net肉苁蓉多糖锌的制备、表征及抗氧化活性黄靖,邹烨。,王未。,李倩。,吴慧玉。,赵婷,茆广华,张敏,仰榴青¨(1.江苏大学化学化工学院,江苏镇江212013;2.江苏大学食品与生物工程学院,江苏镇江2120133.江苏大学药学院,江苏镇江212013;4.江苏大学环境与安全工程学院,江苏镇江212013)摘要:采用超声酶法辅助提取肉苁蓉粗多糖,并用季铵盐沉淀法对肉苁蓉粗多糖进行精制,获得肉苁蓉精制多糖(UCEP1);以UCE
2、P1和硫酸锌为原料,制备了肉苁蓉多糖锌配合物(UCEP1一Zn),对其结构进行了表征,并研究其抗氧化活性.结果表明,肉苁蓉粗多糖收率及含量分别为22.31和48.5O,UCEP1中多糖含量为7o.13;UCEP1一Zn中一0H和一COO一和Zn发生了配位,其中锌含量为7.57,且多糖链构象及多糖分子表面形貌发生变化;UCEP1一Zn的抗氧化能力显著高于UCEP1,且对ABTS自由基清除活性最好.该研究可为肉苁蓉多糖、新型锌营养素补充剂以及锌功能配合物的研究和利用提供参考.关键词:肉苁蓉;多糖;锌;配合物;结构表征;抗氧化活性中图分类号:069文
3、献标志码:A文章编号:1008—1011(2015)06—0584—06Preparation,characterizationandantioxidantactivityofCistanchetubulosaZn2+_polysaccharidecomplexHUANGJing,ZOUYe,WANGWei,LIQJan。,WUHuiyu。,ZHAOTing,MAOGuanghua,ZHANGMin,YANGLiuqingH(1.SchoolofChemistryandChemicalEngineering,JiangsuUniversity,
4、Zhenjiang212013,Jiangsu,China2.SchoolofFoodandBiologicalEngineering,JiangsuUniversity,Zhenjiang212013,Jiangsu,China;3.SchoolofPharmacy,JiangsuUniversity,Zhenjiang212013,Jiangsu,China4.SchoolofEnvironmentandSafetyEngineering,JiangsuUniversity,Zhenjiang212013,Jiangsu,China)Abs
5、tract:Cistanchetubulosapolysaccharideswasextractedbyultrasonic—cellulase—assistedex—tractionandtherefinedpo1ysaccharide(UCEP1)waspreparedbyquaternaryammoniumsaltprecipitation.TheZn一polysaccharide(UCEP1一Zn)waspreparedwithZnSO4andUCEPIasrawmateria1。anditscharacterizati0nandant
6、ioxidantactivitywerealsostudied.Theresultsshowedthattheyieldandcontentofcistanchetubulosapolysaccharideswas22.31and48.50,respectively,andthecontentofUCEP1was70.13.The~OHgroupandthecar—boxylgroupwereinvolved,thechainconformationandvariationonmorphologywerealsochangedafterthef
7、ormationofUCEP1一Zn,andthecontentofZn抖was7.57.Theantioxi—dantactivityofUCEP1-ZnwassignificantlyhigherthanthatofUCEP1andhadthehighestABTSradicalscavengingactivity.Thestudyprovidedareferencefortheresearchandapplica—tionofCistanchetubulosapo1ysaccharide,zincsupplementandzinccomp
8、lexes.Keywords:Cistanchetubulosa;polysaccharide;Zn;complex;characterization
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