Photodegradation of Myrigalone A, an Allelochemical from <i>Myrica gale</i>: Photoproducts and Effect of Terpenes
作者:Amina Khaled、Mohamad Sleiman、Etienne Darras、Aurélien Trivella、Cédric Bertrand、Nicolas Inguimbert、Pascale Goupil、Claire Richard
DOI:10.1021/acs.jafc.9b01722
日期:2019.7.3
covering the fruits of Myrica gale, which suggested that photodegradation occurred in the field. Moreover, myrigalone A photoinduced the oxidation of terpenes that in turn protected it against photolysis. This highlights the need for additional research on the effect of terpenes on the photodegradation of pesticides on vegetation.
这项研究调查了Myrigalone A的环境命运,Myrigalone A是在杨梅的叶子和果实上发现的一种吸收光的天然除草剂。将Myrigalone A用水和干燥的固体沉积物辐照,以模拟叶单独或在由Myrica gale产生的萜烯存在下在叶子上的反应。光转化快(在水中t 1/2 = 35分钟)。液相色谱与高分辨率Orbitrap电喷雾质谱(MS)和气相色谱-MS联用分析表明,在水和固体中形成了11种光产物,在气相中形成了9种光产物。在覆盖杨梅果实的叶腺和油中检测到一些,这表明该领域发生了光降解。此外,myrigalone A光诱导萜烯的氧化,进而保护其免受光解作用。这突出了需要对萜烯对农药在植物上的光降解的影响进行更多研究的必要性。