福建产小鱼仙草挥发油的含量及其化学成分的研究

应用气相色谱 -质谱 -计算机联用系统对小鱼仙草 (Mosla dianthera Maxim.)挥发油的化学成分进行研究。以 SE- 54石英毛细管柱分离出 43个峰 ,用 GC/MS鉴定出 39个成分。其主要成分为百里香酚 (37.1 5% )、香荆芥酚 (1 4.85% )、丁香烯 (5.75% )、芳樟醇 (5.40 % )、檀香烯 (4.1 2 % )、草烯 (3.61 % )、香桧醇 (2 .87% )等。占总挥发油的 98.40 % 。

薰衣草病虫害防治技术

薰衣草属唇型科薰衣草属多年生亚灌木,其叶、茎、花通体散香,被广泛地应用于化妆、洗涤、医药、食品等行业。薰衣草中精油含量较高,常用作芳香剂、驱虫剂及配制香精的原料。随着薰衣草种植面积的不断扩大,不可避免地出现品种混杂、种性退化、病虫害发生严重等现象。笔者根据实践经验总结出薰衣草病虫害防治技术,以期为广大种植户提供参考。一、薰衣草根腐病1.发病症状：这是一种根部病害。

Two New ent-Kauranoids from Isodon tenuifolia

Two new ent-kauranoids, tenuifolin A (3beta,6alpha, 15beta-trihydroxy-1alpha, 7beta-diacetoxy-11beta, 16beta-epoxy-ent-kaurane) (1) and tenuifolin B (1alpha,6alpha, 11beta-trihydroxy-3beta,7beta-diacetoxy-ent-kaur-16-en-15-one) (2), together with four known compounds were isolated from the aerial parts of Isodon tenuifolia (W. W. Smith) Kudo collected from Zhongdian County, Yunnan Province, China. Their structures were determined by the spectral methods (including 2D NMR techniques).