海南尖峰岭野生油楠不同单株树脂化学成分研究
Study on Chemical Components of Oleoresin from Different Wild Sindora glabra Individuals in Jianfengling, Hainan, China
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摘要: [目的]分析油楠不同单株树脂油的化学组分及含量的变化规律,为拓展油楠脂利用途径和开发高附加值的产品.[方法]采用GC-MS联用技术对7份海南尖峰岭野生油楠不同单株泌油化学成分进行分析和鉴定.[结果]表明:油楠脂含有19种已知化合物和2类初步判定的化合物,不同样品所检测出的化合物总含量均为94%以上,主要包括倍半萜类19种,其含量70%以上,二萜类2种,其含量14%以上;α-可巴烯、β-石竹烯和δ-杜松烯三者含量占倍半萜类的2/3以上,占整个化合物的一半以上,是油楠脂的特征组分,也是倍半萜类的最主要成分,其含量在不同单株间比较稳定;二萜类是树脂油重要化学组分之一,不同单株的二萜类含量变化为14.52%~25.10%;与海南吊罗山相比,尖峰岭油楠脂挥发组分更多,且最高含量的化合物也与前者不同.[结论]尖峰岭野生油楠脂的挥发组分为19种,其含量最高的组分为α-可巴烯;吊罗山油楠脂的挥发组分为11种,其含量最高的组分为α-依兰烯;同一产地油楠脂化学组分和含量在不同单株间变化偏小,而在不同收集方式间差异较大;不同分布区可能对油楠脂挥发组分及含量的影响较大.Abstract: [Objective]To provide references for utilization of Sindora glabra oleoresin and development of value-added products.[Method]The oleoresin samples from seven wild individuals of S. glabra were collected in Jianfengling of Hainan Island, and their chemical components were analyzed by gas chromatography-mass spectrometry.[Result]Nineteen compounds were identified and two compounds were preliminarily decided, which represented over 94% of the total contents of the oleoresin samples. The main compounds were sesquiterpenes and diterpenes, among which there were nineteen kinds of sesquiterpenes, accounting for more than 70% of total contents and two kinds of diterpenes, representing for more than 14% of those. The α-Copaene, β-caryophyllene and δ-cadinene were the dominant components of S. glabra oleoresins which were relatively stable among different samples, representing over two thirds of sesquiterpenes and more than one half of total compounds; the diterpenes were also the main components of oleoresin, whose contents in different oleoresin samples varied from 14.52% to 25.10%. Compared with the oleoresin in S. glabra from Diaoluoshan, the oleoresin in S. glabra from Jianfengling contained higher volatile components and the compounds with the highest contents were also different.[Conclusion]The oleoresin in wild S. glabra from Jianfengling contained nineteen volatile compounds with the highest content of α-Copaene while that from Diaoluoshan had eleven volatile compounds with the highest content of α-ylangene. There were great differences in volatile components and oleoresin contents between S. glabra individuals from the two areas. In the same location, the variation of components and contents of oleoresins were small among different samples but great among different collection time.
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Key words:
- Sindora glabra
- / oleoresin
- / gas chromatography-mass spectrometry
- / chemical component
- / sesquiterpenes
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