RESUMO
<p><b>OBJECTIVE</b>This study is to develop excellent extraction technology of the polysaccharides in the root of the A. potaninii which live in the Taibai Mountain in China.</p><p><b>METHOD</b>Based on the extraction with water, the polysaccharides were deposited with alcohol. With the content of polysaccharides was as the index, extraction conditions were investigated systemly. Employed the solid-liquid ratio, extraction temperature, extraction time and extraction number of times were as levels of single factor, the optimal extraction technology of the polysaccharides from the root of the A. potaninii was determined by L9 (3(4)) orthogonal experimental design L9 (3(4)).</p><p><b>RESULT</b>The optimal technology conditions were that the solid-liquid ratio was 1 : 30, the extracting temperature was 60 degrees C, the extracting time was 3 h and extracting number of times was 3 times.</p><p><b>CONCLUSION</b>The optimized extraction technology is simple, reliable and extraction efficiency of polysaccharide is higher.</p>