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- W2391404052 abstract "Favonoids of Polygonum bistora L. were purified by macroporous adsorption resins, then the active fraction of flavonoids with synergistic antioxidant combined with VC was screened. Based on the experimental results of static adsorption efficiency and desorption efficiency, the suitable resin was chosed, and the adsorption thermodynamics of flavonoids in solution was studied. The effect of p H value and concentration of flavonoids on adsorption conditions were determined. The results showed that the isothermal adsorption of flavonoids on NKA-II macroporous resin was described well by Freundlich equation, and the process was a preferential adsorption. The optimum purification conditions of flavonoids were as follows: the sample was 0.4296mg/m L of flavonoids at p H 2, the concentration of ethanol used as eluent was 40%, 60%, 80%, 95%, respectively. Meanwhile, the integration of flavonoids extracted by 95% ethanol and VC(1:2) exhibited a remarkable synergistic antioxidation in terms of scavenging ·DPPH, IC50 mix and the interaction index. All results showed that the flavonoids of Polygonum bistora L. was an excellent natural antioxidation product." @default.
- W2391404052 created "2016-06-24" @default.
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- W2391404052 date "2015-01-01" @default.
- W2391404052 modified "2023-09-24" @default.
- W2391404052 title "SCREENING OF ACTIVE FRACTIONS WITH SYNERGISTIC ANTIOXIDATION BETWEEN FLAVONOIDS OF Polygonum bistorta L. AND VC" @default.
- W2391404052 hasPublicationYear "2015" @default.
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