Studies on application of ultra-filtration to purifying polysaccharides from Rhubarb / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To purify Rhubarb polysaccharides via micro-filtration and ultra-filtration.</p><p><b>METHOD</b>The technology adopted micro-filtration and tubular membrane with different cut-off molecular weights.</p><p><b>RESULT</b>Experiment results showed that the optimum operating conditions were that the ultra-filtration time controlled around 80 min, the temperature was set the 35-40 degrees C, the operating pressure was 0.08-0.12 MPa, the pH was 6-8, and a sample that of polysaccharide was 0.5 times of original concentration. The recovery ratio of the polysaccharides was 53.7%, the concentration could be condensed to 2.73 times compared with the sample liquid.</p><p><b>CONCLUSION</b>The technology was simple and feasible, it can be applied to purify Rhubarb polysaccharides.</p>