1,8-桉叶素型互叶白千层花与叶挥发油成分分析

2021-06-15 02:28:17陈海燕李桂珍梁忠云
安徽农业科学 2021年10期
关键词:分配

陈海燕 李桂珍 梁忠云

摘要 用水蒸气蒸馏法提取1,8-桉叶素型互叶白千层花、叶的挥发性成分,采用气相色谱-质谱(GC-MS)、气相色谱(GC)分析挥发油成分和单萜手性化合物对映体分配,比较成分及含量之间的差异。结果表明,1,8-桉叶素型白千层花与叶挥发油的主成分均为1,8-桉叶素(67.89%,68.14%)、α-松油醇(8.14%,10.59%)、柠檬烯(7.84%,8.54%)、α-蒎烯(3.18%,3.07%),含量相差不大;单萜柠檬烯、4-松油醇、α-松油醇对映体分配差异不显著,说明在花期时进行加工,精油质量不变。

关键词 水蒸气提取法;1,8-桉叶素型互叶白千层;挥发性成分;对映体分配

中图分类号 TQ651+.2文献标识码 A

文章编号 0517-6611(2021)10-0164-03

doi:10.3969/j.issn.0517-6611.2021.10.044

开放科学(资源服务)标识码(OSID):

Analysis of Volatile Oil from Flowers and Leaves of 1,8-Cineole Type Melaleuca alterniflora

CHEN Hai-yan1,2,LI Gui-zhen1,2,LIANG Zhong-yun1,2 (1.Guangxi Academy ofForestry,Nanning,Guangxi 530002;2.Guangxi Key Laboratory of Special Non-wood Forest Cultivation & Utilization,Nanning,Guangxi 530002)

Abstract The volatile components of the flowers and leaves of 1,8-cineole-type Melaleuca alterniflora were extracted by steam distillation,GC and GC-MS methods were applied to identify the components and enantiomeric distribution in these violatile oils from different parts of Melaleuca alternifolia,and the differences and relative contents of the main chemical components were compared.The results showed that the main components of the volatile oil of the flowers and leaves of 1,8-cineole-type Melaleuca alterniflora were 1,8-cineole (67.89%,68.14%),α-terpineol (8.14%,10.59%),limonene (7.84%,8.54%) and α-pinene (3.18%,3.07%),the content is not much different.Monoterpene limonene,4-terpineol and α-terpineol had no significant differences in the distribution of enantiomers,indicating that the quality of the essential oil remains unchanged during processing during the flowering period.

Key words Steam distillation;1,8-cineole-type Melaleuca alterniflora;Volatile components; Enantiomeric distribution

互叶白千层是桃金娘科(Myrlaceaca)白千层属(Melaleuca)常绿灌木至小乔木树种,原产于澳大利亚的东部,20世纪90年代初引入我国,目前在广西、广东、四川、江西、福建等地大面积种植,其花期在每年的3月下旬到4月中旬。利用白千层叶和小枝条进行水蒸气蒸馏得到的精油称白千层油,通过测定发现互叶白千层油成分相同,但含量差异较大,根据主成分含量划分为多种化学类型[1],其中1,8-桉叶素型是值得开发的类型之一,其枝叶挥发油主成分及应用已有研究[2-4],柴玲等[5]研究了4-松油醇型互叶白千层的花、果、叶的挥发性成分,而1,8-桉叶素型互叶白千层花期时花、叶的挥发性成分鲜见报道,笔者用水蒸气蒸馏提取1,8-桉叶素型白千层花与叶的挥发油,采用GC和GC-MS分别对挥发油成分及手性化合物单萜对映体分配进行研究,并进行比较分析,以期为花、叶同期的互叶白千层开发与利用提供参考。……

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