Department of Entomology, China Agricultural University, 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, China.
Z Naturforsch C J Biosci. 2013 Jul-Aug;68(7-8):307-12.
Hydrodistilled essential oil from Rhododendron anthopogonoides Maxim. (Ericaceae) aerial parts was analysed by gas chromatography-mass spectrometry (GC-MS). A total of 42 compounds, accounting for 95.48% of the total oil, were identified. The main constituents of the essential oil were benzyl acetone (34.41%), nerolidol (10.19%), 1,4-cineole (8.41%), beta-caryophyllene (5.63%), gamma-elemene (5.10%), and spathulenol (3.06%). Four constituents were isolated from the essential oil based on fractionation. The essential oil of R. anthopogonoides possessed nematicidal activity against the root knot nematode (Meloidogyne incognita) with an LC50 value of 130.11 microg/ml. The main compound of the essential oil, benzyl acetone, exhibited nematicidal activity against M. incognita with an LC50 value of 74.17 microg/ml while 1,4-cineole, nerolidol, and beta-caryophyllene were not nematicidal at a concentration of 5 mg/ml. The essential oil of R. anthopogonoides and benzyl acetone show potential for their development as possible natural nematicides for the control of the root knot nematode.
从 Rhododendron anthopogonoides Maxim.（杜鹃花科）地上部分用水蒸馏法提取的精油，通过气相色谱-质谱联用（GC-MS）进行了分析。鉴定出 42 种化合物，占总油量的 95.48%。精油的主要成分是苯乙酮（34.41%）、橙花叔醇（10.19%）、1,4-桉树脑（8.41%）、β-石竹烯（5.63%）、γ-榄香烯（5.10%）和匙叶桉油醇（3.06%）。根据馏分从精油中分离出了 4 种成分。Rhododendron anthopogonoides 精油对根结线虫（Meloidogyne incognita）具有杀线虫活性，LC50 值为 130.11μg/ml。精油中的主要化合物苯乙酮对 M. incognita 具有杀线虫活性，LC50 值为 74.17μg/ml，而 1,4-桉树脑、橙花叔醇和β-石竹烯在 5mg/ml 浓度下没有杀线虫活性。Rhododendron anthopogonoides 精油和苯乙酮具有作为天然杀线虫剂控制根结线虫的潜力。
