Abstract 1) The crude mucilage could be filtered after homogenizing by a mixer. By the addition of alcohol-ether mixture to the filtrate, the precipitates were obtained, which gave purified mucilage on redissolving in water. 2) The purified mucilage had noticeable elasticity and could be used for the research work instead of crude mucilage. 3) Some colloidal behavior of the purified mucilage was observed.