Table 1 Contents of diosgenin in Dioscorea species and related medicinal plants

D. zingiberensis

1) Lingbao, Henan, China (2011)

11.47 ± 0.43

2) Huaihua, Hunan, China (2010)

11.23 ± 0.29

3) Shanxi, China (2010)

18.35 ± 0.52

4) Yuanling, Hunan, China (2012)

19.52 ± 0.51

5) Hubei (2012)

13.20 ± 0.36

6) Anhua, Hunan, China (2012)

11.30 ± 0.36

7) Chenxi, Hunan, China (2012)

16.58 ± 0.57

8) Xupu, Hunan, China (2012)

14.36 ± 0.34

9) Zhongfang, Hunan, China (2012)

19.00 ± 0.29

10) Shanxi,China (2012)

8.67 ± 0.28

D. septemloba

1) Hunan, China (2011)

0.78 ± 0.02

2) Hunan, China (2011)

1.12 ± 0.02

3) Hunan, China (2011)

1.11 ± 0.04

4) Hunan, China (2011)

1.18 ± 0.02

5) Chengdu, China (2012)

1.14 ± 0.03

D. collettii

1) Guizhou, China (2012)

13.19 ± 0.26

D. opposita

1) Henan, China (2011)

ND

2) Henan, China (2011)

ND

3) Jiaozuo, Henan, China (2011)

ND

Smilax glabra

1) Shek Lei Pui Reservoir, Hong Kong (2012)

ND

2) Duyun, Guizhou (2011)

ND

3) Kam Shan Country Park, Hong Kong (2012)

ND

Heterosmilax japonica

1) Ceheng, Guizhou, China (2010)

ND

H. yunnanensis

1) Ceheng, Guizhou, China (2010)

0.05 ± 0.002