Bos R, Woerdenbag H J, van Putten F M, Hendriks H, Scheffer J J
Department of Pharmaceutical Biology, University of Groningen, The Netherlands.
Planta Med. 1998 Mar;64(2):143-7. doi: 10.1055/s-2006-957392.
During the seasons 1989-1993, Valeriana officinalis plants were investigated for their contents of essential oil, valerenic acid and derivatives, and valepotriates. Harvesting of the subterranean parts was started in August of the year in which the seeds were sown, and continued until the last week of April of the subsequent year. Despite marked variations from year to year, the maximum contents of essential oil in the subterranean parts of V. officinalis were found in September, ranging from 1.2% to 2.1% (v/w) based on dry weight (DW). Over the vegetation periods investigated, the composition of the oil remained more or less constant. Valerenic acid and its derivatives, and the valepotriates reached their maxima in February-March, with contents of 0.7-0.9% (DW) and 1.1-1.4% (DW), respectively. During the period 1989 - 1993, five V. officinalis strains were investigated for their contents of essential oil, valerenic acid and derivatives, and valepotriates in order to select plants suitable for phytomedicines. The selection procedures described in this paper finally yielded plant material (in 1993) with a satisfactory content of essential oil (0.9%) combined with a high content of valerenic acid and derivatives (0.5%) which can be harvested in September of the year of sowing.
在1989 - 1993年期间，对缬草属植物进行了研究，分析其精油、缬草烯酸及其衍生物以及缬草三酯的含量。地下部分的采收于播种当年的8月开始，一直持续到次年4月的最后一周。尽管年际间存在显著差异，但缬草地下部分的精油最大含量出现在9月，以干重（DW）计，含量范围为1.2%至2.1%（v/w）。在所研究的植被期内，精油的组成大致保持不变。缬草烯酸及其衍生物以及缬草三酯在2月至3月达到最大值，含量分别为0.7 - 0.9%（DW）和1.1 - 1.4%（DW）。在1989 - 1993年期间，对五个缬草属菌株的精油、缬草烯酸及其衍生物以及缬草三酯含量进行了研究，以选择适合用于植物药的植株。本文所述的选择程序最终获得了（1993年）精油含量令人满意（0.9%）且缬草烯酸及其衍生物含量较高（0.5%）的植物材料，该材料可在播种当年的9月采收。
