Meot-Duros Laetitia, Magné Christian
Institut Universitaire Européen de la Mer, Université de Bretagne Occidentale, 29280 Plouzané, France.
Plant Physiol Biochem. 2009 Jan;47(1):37-41. doi: 10.1016/j.plaphy.2008.09.006. Epub 2008 Oct 2.
Sea fennel (Crithmum maritimum L.) is an edible halophyte with various economical interests because of its high secondary metabolite content. However, little is known about water-soluble compounds in that species. Here, we have studied major solutes in C. maritimum leaves. Among these solutes, carbohydrates (sucrose, glucose) were the most abundant, followed by organic acids (malate and quinate) and a phenolic compound never described in a halophyte before: chlorogenic acid (CGA). Total phenols and chlorogenic acid contents were followed throughout one year, as well as antioxidant activity, in two populations of C. maritimum growing in contrasting habitats: sand hills and cliffs. Sea fennel leaves appeared to be rich in phenolic compounds, particularly in chlorogenic acid. On that point, differences between the two populations were found, sand hill plants accumulating more CGA than those growing on cliffs. Moreover, the former presented a higher radical-scavenging activity, and the two observations were positively correlated. These results indicate that sea fennel can be considered as a valuable source of antioxidant products, especially of chlorogenic acid.
海茴香（Crithmum maritimum L.）是一种可食用的盐生植物，由于其高含量的次生代谢产物而具有多种经济价值。然而，关于该物种中的水溶性化合物知之甚少。在此，我们研究了海茴香叶片中的主要溶质。在这些溶质中，碳水化合物（蔗糖、葡萄糖）含量最为丰富，其次是有机酸（苹果酸和奎尼酸）以及一种此前从未在盐生植物中描述过的酚类化合物：绿原酸（CGA）。在生长于不同生境（沙丘和悬崖）的两个海茴香种群中，对总酚和绿原酸含量以及抗氧化活性进行了为期一年的跟踪研究。海茴香叶片似乎富含酚类化合物，尤其是绿原酸。在这一点上，发现两个种群之间存在差异，沙丘植物积累的CGA比生长在悬崖上的植物更多。此外，前者具有更高的自由基清除活性，且这两个观察结果呈正相关。这些结果表明，海茴香可被视为抗氧化产品的宝贵来源，尤其是绿原酸。
