Abstract:

The optimal extraction processing of polysaccharides and total flavonoids from wild Pteridium aquilinum powder collected from Huaguo Mountain of Lianyungang were explored by orthogonal experiments. The contents of total flavonoids and polysaccharides were determined by spectrophotometry. The optimal extraction conditions for polysaccharides were materialliquid ratio of 1:20, extraction temperature of 90 ℃, extraction repeat number of 2 and extraction time of 1.5 h each time. Under the optimal extraction conditions, the contents of polysaccharides in fresh Pteridium aquilinum and dry Pteridium aquilinum were 1.39% and 7.08%, respectively. The optimal extraction conditions for total flavonoids were material-70% ethanol ratio of 1:10, extraction temperature of 90 ℃, extraction repeat number of 2 and extraction time of 2 h each time. Under the optimal extraction conditions, the contents of total flavonoids in fresh Pteridium aquilinum and dry Pteridium aquilinum were 4.90% and 3.11%, respectively.

Key words: polysaccharide, flavonoids, Pteridium aquilinum