Abstract: Flowers of Robinia pseudoacacia Linn.was extracted using petroleum ether to obtain the extract. The parameters of boiling range of petroleum ether,extraction time,liquid-solid ratio on the yield of R.pseudoacacia extract were researched. Thirteen volatile components of extract were identified with GC-MS. The flavoring of the extract for tobacco was evaluated and pyrolysis at 800℃ was conducted. The result showed that the optimum extraction conditions were: 60-90℃ petroleum ether, liquid-solid ratio 4:1-5:1,extract time 4-5h. The extract can increase aroma, shield offensive odor, and increase smoke thoroughness.

Key words: flower of Robinia pseudoacacia Linn., black locust, extraction, flavoring components, cigarette flavoring