广西植物2016，Vol.36Issue(6)：758-762,5.DOI:10.11931/guihaia.gxzw201502017
广西北海拉关木挥发物的 ATD-GC/MS 分析及安全性评价
Analysis of volatiles from Laguncularia racemosa in Beihai, Guangxi by ATD-GC/MS andevaluation on safe property of the tree
摘要
Abstract
Laguncularia racemosa is a fast growing mangrove plant with excellent properties of anti-salt and waste pre-vention. But its safety to the environment and human beings need to evaluate when it absorbs polluted materials from the sea water, especially the safety on sense of smell of those volatile compositions released from the tree. For these con-cerns, volatiles from both the juvenile and adult branches without flowers or fruits were collected. And for the latter, it was also sampled branches with flowers and fruits. These samples were all obtained from the cultivation base for man-groves in Beihai, Guangxi Zhuang Autonomous Reigion, China, which was a suitable afforestation farm for this mangrove plant with relatively high stability. Such volatiles mentioned above were captured in situ, i.e. from the living and undam-aged tree, by dynamic head-space adsorption within a close and air circular system, using a set of portable apparatus which was easily available to experimental operation in the fields. Then, their chemical compositions were analyzed using auto thermal-desorption gas chromatography/ mass spectrometry (ATD-GC/ MS). The results showed that terpines, ke-tones, acids and other substances were detected in the tree volatiles, among which the highest content parts were terpines. In all samples, over 3/ 4 of the total volatile percentage was α-pinene, which shared the most preponderance of those compositions. Terpenes such as β-phellandrene and β-pinene were also with relatively high content, the former ranging nearly 10%-15% and the latter over 5%. It was concord with investigations on the constituents of those extrac-ted chemicals from this tree and other mangrove plants such as Aegiceras comiculatum, as terpines were found in all of them. The other less compounds also contributed to the total smell at some point, providing fragrances as pine wood, holly tree, orange, eucalyptus and other vegetations, although they were various in aroma strong value of fragrance or odor (ASV). Some substances were considered as mid-strong ASV chemicals, such as camphene (250), benzalde-hyde (500), acetophenone (200), nonanal (550), methyl salicylate (450) etc., and others were considered as low ASV chemicals, such as terpinolene (120), octanoic acid (100), nonanoic acid (100), p-cymene (80), etc. For its benefit to human health, L. racemosa is probably available to daily cosmetics and flavors by using the volatiles widely. Due to the safe and non-toxic smelling, the tree can be regarded as a prospective species for seashore vegeta-tion rebuilding, coastal eco-restoration and landscape/ fragrance environment making in the urban beaches.关键词
拉关木/嗅觉/活体/动态顶空/全自动热脱附-气相色谱/ 质谱(ATD-GC/ MS)/环境安全Key words
Laguncularia racemose/sense of smell/in situ/dynamic head-space/auto thermal-desorption cryo-trapping gas chromatography/ mass spectrometry (ATD-GC/ MS)/environment safety分类
农业科技引用本文复制引用
姚贻烈,郑华,陆小峰,李坤,钟景春,宋国彬,陈大亮..广西北海拉关木挥发物的 ATD-GC/MS 分析及安全性评价[J].广西植物,2016,36(6):758-762,5.基金项目
国家林业公益性行业科研专项(201004028)[Supported by the National Specific Item of Nonprofit Forestry Research(201004028)]。 （201004028）
