[Analysis of head volatile constituents of Polyonum cuspidatum flower by HS-GC/MS].

Objective:To analyze the floral volatiles of Polyonum cuspidatum flower.Methods :The floral volatiles of P.cuspidatum flower were investigated by Headspace Sampler GC/MS.Results:21 compounds were separated and determined from P.cuspidatum,which amounted to 99.29% of the total volatiles.5 compounds including(E)-2-hyexenoic acid methyl ester,1-phenyl-1-pentanone,(E)-4-hexenoic acid methyl ester,3-hexenoic acid methyl ester,2-methyl-6-methylene-1 and 7-octadien-3-one were the main constituents existed in P.cuspidatum flower,which amounted to 63.23% of the total volatiles.Organic ester compounds amounted to 52.09% of the total volatiles.Hexenoic acid methyl ester compounds were most,which amounted to 85.66% of the total organic ester compounds.In addition,the 1-phenyl-1-pentanone and acetophenone were 16.30% and 4.33%,which amounted to 20.63% of the total volatiles.Conclusion:The result of this research provides a scientific method for the reasonable exploitation and utilization of P.cuspidatum flower.