Abstract: The components of 5 species of wild edible ferns in southeast Yunnan were analyzed： Callipteris esculenta, Pteridium aquilinum, Allantodia dilatata, Pteridium revolutum and Tectaria decurrens. The results showed that the contents of protein, soluble sugar, crude fiber and crude fat were 20.04%~32.72%, 1.24%~12.63%, 11.26%~24.68% and 0.54%~1.05% respectively. The content of potassium was 3 163~4 610 mg/100 g, the content of magnesium was 316~377 mg/100 g, the content of calcium was 125~350 mg/100 g, the content of iron was 5.589~8.309 mg/100 g, and the content of manganese was 3.578~10.420 mg/100 g. The content of protein, crude fiber, potassium, magnesium and manganese was much higher than that of green leafy vegetables, while the content of calcium and iron was lower than that of cabbage and spinach in the control group. In addition, five kinds of determination samples contained citric acid, succinic acid, fumaric acid and other organic acids, among which Pteridium aquilinum, Pteridium revolutum and Tectaria decurrens also contained a small amount of tartaric acid, which provided scientific basis and basic data for the development and utilization of wild ferns in the future.

Key words: wild ferns, nutrient content, mineral element, organic acids