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- W2378626923 abstract "Xanthan gum in dry state was treated at different dosages(0 ～ 500kGy) of 60Co γ-rays irradiation to investigate the changes of molecular weight and antioxidant activity of Xanthan gum.The molecular weight of Xanthan gum increased from 1.71 × 106 to 2.23 × 106 at 10kGy dose of irradiation,then decreased to 1.59 × 104 at 500kGy.Reducing activity and scavenging assays of 1,1-diphenyl-2-picrylhydrazyl radical(DPPH.),superoxide anion radical(O2-.) and hydroxyl radical(.OH) were used to evaluate the antioxidant activity of irradiated Xanthan gum.Below 10kGy,reducing activity and scavenging effect on DPPH.and O2-.were negative correlated with irradiation dose,and compared with control,reducing activity decreased by 3.16%,and the scavenging effects on DPPH.and O2-.decreased from 17.37% and 18.18% to 16.87% and 8.51% at 10kGy,respectively.When irradiation dose was higher than 10kGy,reducing activity and the scavenging effect on DPPH.and O2-.of irradiated samples were postive correlated with irradiation dose,and compared with control,reducing activity increased by 164.22%,and scavenging effect on DPPH.and O2-.increased to 60.79% and 30.06% at 500kGy,respectively.The.OH scavenging capacity of irradiated samples was negative correlated with irradiation dose,and it decreased from 9.29% at 0kGy to 3.63% at 500kGy.Irradiation can cause polymerization or degradation of Xanthan gum molecule,and lead to significant changes of molecular weight and antioxidant activity of Xanthan gum." @default.
- W2378626923 created "2016-06-24" @default.
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- W2378626923 date "2010-01-01" @default.
- W2378626923 modified "2023-09-25" @default.
- W2378626923 title "EFFECT OF IRRADIATION ON MOLECULAR WEIGHT AND ANTIOXIDANT ACTIVITY OF XANTHAN GUM" @default.
- W2378626923 hasPublicationYear "2010" @default.
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