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Effect of ultrasound parameters on the antioxidative activity of polysaccharides from Atractylodes

超声参数对白术多糖抗氧化活性的影响



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ChineseJournalofBioprocessEngineering
Vol.10No.1
Jan.2012
doi:10.3969/j.issn.1672-3678.2012.01.002
OPQI
:2011-05-03
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Effectofultrasonicparametersonantioxidativeactivityof
polysaccharidesfromAtractylodes
WANGYanli1,ZHANGJing1,SUNRunguang2,DAIJingjing1
(1.ColegeofFoodEngineeringandNutritionScience,ShanxiNormalUniversity,Xi′an710062,China;
2.ColegeofPhysicsandInformationTechnology,ShanxiNormalUniversity,Xi′an710062,China)
Abstract:PolysaccharidesfromAtractylodesmacrocephalaKoidzwereobtainedbythehotwaterextraction
andtheultrasonicassistedextraction.Thetotalreducingpowerscavengingefectstosuperoixideandhy
droxyradicals,1,1diphenyl2picrylhydrazyl(DPPH)radicalondiferentpolysaccharidesweremeasured
andtheirantioxidantactivitieswereevaluated.Resultsshowedthemaximumrateofpolysaccharideswas
8017% whentheultrasonicfrequencywas80kHzat220W,itwashigherthanthatofthehotwaterex
traction.Withtheultrasonicpowerincreased,theclearancerateofhydroxylradicalenhancedbutthescav
engingefectonsuperoxideradicalwasweak.Boththeultrasonicpowerandfrequenciesinfluencedthean
tioxidantactivityofpolysaccharides,inwhichtheinfluenceoftheultrasonicpowerwasmoreobvious.
Keywords:Atractylodes;antioxidant;extraction;polysaccharides;ultrasound
  
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