Solid phase micro-extraction (SPME) technique was applied to extract the volatiles and wound-induced volatiles of Ricinus communis, the volatiles were isolated and identified by GC-MS. The main volatile from intact leaves of Ricinus communis was 3 kinds of different constitution of dibutyl phthalate (87.81%), and dibutyl phthalate has the highest content (61.73%); besides the main volatile, a small quantity of decanamine, N-butyl (5.11%) and morpholine,4-octadecyl (7.07%) were identified too. When the leaves were broken to pieces, more volatiles were isolated, and 8 kinds of wound-induced volatiles were identified, they are unsaturated hexyl ester、hexyl aldehyde and hexyl-ol mostly, among them 3-hexen-1-ol, acetate was the main component, with content of 92.28%.
