It may be composed of allelochemics such as alkaloids or terpenes . 它可以由异种化合物例如生物碱或萜稀组成。
The true alkaloid nicotine in nicotiana functions as an allomone against many insect species . 烟草属中的真生物碱,烟碱作为利已激素,能防治许多昆虫。
The deliberate or accidental ingestion of belladonna alkaloids or other classes of drugs with atropinic properties is a major cause of poisonings . 故意或意外服用颠茄生物碱或其它具有阿托品的药物是中毒的主要原因。
They include alkaloids, steroids, phenolics, saponins, tannins, resins, essential oils, various organic acids, and other componds . 它们包括生物碱、甾类化合物、酚类、皂角苷、丹宁、树脂、香精和各种有机酸,以及其他化合物。
Diterpenoid alkaloids from aconitum tuguancunense 土官村乌头中的二萜生物碱