Table 5 Alkylating activities of the six plant extracts and melphalan

Melphalan

2.768

Absorbance > 0.50

(very high alkylating activities)

G. daltonii

0.745

A. villosum var xanthioides

0.464

0.15 ≥ Absorbance ≥ 0.50

(high alkylating activities)

C. orientalis

0.387

P. kesiya

0.273

C. speciosum

0.176

A. tatarinowii

0.135

Absorbance < 0.15

(low alkylating activities)