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.]