刺毛杜鹃花蕾与花的挥发性成分分析

The volatile components of the buds and flowers of Rhododendron championae

以刺毛杜鹃花蕾与花为材料,首次采用顶空固相微萃取-气相色谱质谱法分析了它们的挥发性成分,讨论了刺毛杜鹃花香成分的变化及给人们的感受。结果表明:从刺毛杜鹃的花蕾和花中共鉴定出23种化合物,6种化合物为共有成分。花蕾期以烯烃类化合物为主,占总量的53.39%;花期以萜类化合物为主,占总量的64.09%。花蕾期含量最高的化合物为1-甲基-5-亚甲基-8(1-甲基乙基)-1,6-环癸二烯-s-(E,E),含量(质量分数)达到39.76%;花期含量最高的化合物为罗勒烯,含量(质量分数)达到36.21%。研究表明,刺毛杜鹃所含的花香成分能给人舒服的感觉,适合园林绿化应用。

Volatile components of the buds and flowers of Rhododendron championae were analyzed by HS- SPME- GC- MS for the first time,and the changes of flora fragrance components were discussed. The results showed that 23 kinds of volatile components were indentified from both the buds and flowers,and six components existed in both samples. The main components at the bud stage were alkenes,which accounted for 53. 39%. The main components at the flower stage were terpenoids,which accounted for 64. 09%. In all volatile components,the contents of 1,6- cyclodecadiene,1-methyl- 5- methylene- 8-（ 1- methylethyl）-,[s-（ E,E） ]- in buds（ 39. 76%） and 1,3,6- octatriene,3,7-dimethyl- in flowers（ 36. 21%） were the highest in the bud stage and florescence,respectively. Fora fragrance components of R. championae were comfortable to people,which were suitable in landscaping.