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Polysaccharides production from Poria cocos was carried out using aqueous NaOH with the assistance of ultrasonic. Experimental design was used to investigate the effect of three parameters (extraction time, extraction concentration of NaOH, and ratio of aqueous NaOH to raw material) on polysaccharides yields. The ranges of the factors investigated were 1–3min for extraction time (X 1 ), 0...
Experimental design was used to investigate the effect of three parameters (extraction time, extraction number and ratio of water to raw material) on polysaccharides yields. The ranges of the factors investigated were 3.5–4.5h for extraction time (X 1 ), 4–6 for extraction number (X 2 ), and 25–35 for ratio of water to raw material (X 3 ). The statistical analysis of the experiment...
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