Botanical Information Dioscorea nipponica Makino (procuring samples)

Synonyms Dioscorea acerifolia var. rosthornii Diels
Dioscorea giraldii R.Knuth
Dioscorea nipponica f. jamesii (Prain & Burkill) Kitag.
Dioscorea nipponica subsp. rosthornii (Diels) C.T.Ting
Dioscorea nipponica var. jamesii Prain & Burkill
Dioscorea nipponica var. pubescens Nakai
Dioscorea nipponica var. rosthornii (Diels) Prain & Burkill
Common name (en) Uchiwa Yam
Common name (zh) 穿山龙

Sample preparation To 0.5 g of the powdered herbal drug add 5 mL of methanol. Sonicate for 10 min. Centrifuge and use the supernatant
Mobile phase Water, methanol, methylene chloride 10:50:64 (v/v/v)
Derivatization Treat with anisaldehyde solution, heat at 100 °C for 3 min, allow to cool for 10 min and examine