7种槭树释放挥发性有机化合物组分分析

为探讨槭树Acer spp.释放挥发性有机化合物（VOCs）的组分，采用动态顶空气体循环法对苦茶槭A. ginnala，鸡爪槭A. palmatum，三角槭A. buergerianum，樟叶槭A. cinnamomifolium，羊角槭A. yangjuechi，毛脉槭A. pubinerve和青榨槭A. davidii等7种植物释放VOCs进行收集，利用热脱附/气相色谱/质谱（TDS-GC-MS）联用技术对其组分进行分析。结果表明:不同树种释放VOCs种类与相对含量差异明显。苦茶槭和青榨槭分别释放17种和20种成分，以酯类、醛类和醇类物质为主，相对含量较多的有乙酸叶醇酯、癸醛、（Z）-3-己烯-1-醇和壬醛；鸡爪槭、三角槭和毛脉槭分别释放15种、19种和23种成分，以萜类、酯类和醛类物质为主，相对含量较多的为罗勒烯、乙酸叶醇酯、癸醛、长叶烯和壬醛；樟叶槭释放24种成分，以萜类化合物为主，相对含量较多的有罗勒烯、α-蒎烯、3-蒈烯、β-蒎烯和松油烯；羊角槭释放25种成分，以萜类、醛类和醇类物质为主，相对含量较多的有癸醛、长叶烯、2-乙基-1-己醇、石竹烯和壬醛。以上7种槭树均可作为保健型园林植物材料。图3表1参29

Component analysis of volatile organic compounds from branches and leaves in seven Acer species

To analyze the volatile organic compounds （VOCs） released in Acer spp., VOCs from the branches and leaves of Acer ginnala, Acer palmatum, Acer buergerianum, Acer cinnamomifolium, Acer yangjuechi, Acer pubinerve, and Acer davidii were collected and analyzed by the dynamic headspace air-circulation method and thermal desorption system/gas chromatograhpy/mass spectrum （TDS-GC-MS）. Results showed that the species of VOCs and their relative proportions varied significantly with species of Acer spp., A. ginnala and A. davidii released 17 and 20 kinds of VOCs, respectively, most of which were esters, aldehydes, and alcohols, such as 3-hexen-1-ol acetate, decanal, （Z）-3-hexen-1-ol, and nonanal. A. palmatum, A. buergerianum, and A. pubinerve released 15, 19, and 23 kinds, respectively, most of which were terpenes, esters, and aldehydes, such as ocimene, 3-hexen-1-ol acetate, （Z）-decanal, longifolene, and nonanal. A. cinnamomifolium released 24 kinds of VOCs, most of which were terpenes, such as ocimene, α-pinene, 3-carene, β-pinene, and terpinene. A. yangjuechi released 25 kinds, most of which were terpenes, aldehydes, and alcohols, such as decanal, longifolene, 2-ethyl-1-hexanol, caryophyllene, and nonanal. Thus, the health function of VOCs from these Acer species could be utilized in healthcare gardens. Ch, 3 fig. 1 tab. 29 ref.]