Spectrophotometric method was used for determination of polysaccharides in dioscorea opposita thunb collected from Henan, Shandong and Shanxi and dioscorea alata L from Guangdong and Guangxi.

• 摘要用硫酸－苯酚显色，分光光度法测定了山药及其同属植物参薯中的多糖含量。