Table 7 Comparison of yields and contents of anthraquinone
in crude drug processed from R. coreanum produced by
different multiplication methods.
Item Multiplication method
Rhizome
tissue culture
Seeding Lateral buds
propagation
Average dry1
weight of crude
drug per plant
(n= 100)/kg
1.08 0.63 0.85
Content of total
anthraquinone
(free +glycoside)/%
4.56
(0.42+4.14)
3.87
(0.38+3.49)
3.19
(0.32+3.87)
Content of
sennoside/%
0.95 0.84 0.91
Note: 1Data measured with triennial plant.