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Raffinose family oligosaccharides (RFOs) were extracted and isolated from Rehmannia glutinosa Libosch. by using microwave-assisted extraction and fast protein liquid chromatography coupled with refractive index detection (FPLC-RID). After extraction with 60% ethanol (v/v) and decolorization with MCI gel CHP20P, total oligosaccharides were purified by using FPLC-RID coupled with the Bio-Gel P2 column...
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