PDF(Pubmed)
Abstract：
Olive leaves are a rich source of polyphenols with healthful properties and represent one of the most abundant waste products of olive oil production. The aims of this study were to explore the phenolic composition of olive leaves from the three main Tuscan cultivars (Leccino, Moraiolo and Frantoio) collected in Siena and Grosseto provinces and to investigate the possible use of these compounds as varietal and geographic origin markers. Discriminant factorial analysis (DFA) was used for distinguishing between different cultivars and locations. Apigenin and caffeoyl-secologanoside showed significant differences between cultivars. DFA showed that ligstroside, apigenin and luteolin have the most influence in determining the differences between sites, whereas total polyphenols, olacein and hydroxytyrosol acetate allowed for separation between leaves from the same province. The results of the present study indicate that concentrations of phenolic compounds, measured through high-resolution mass spectrometry, can be used as a marker for both the cultivar and of geographical origin of olive leaves, and possibly of olive-related products, as well as across small geographic scales (less than 50 km distance between sites).
摘要：
橄榄叶是具有健康特性的多酚的丰富来源，代表橄榄油生产中最丰富的废物之一。这项研究的目的是从三个主要的托斯卡纳品种（Leccino，Moraiolo和Frantoio）在锡耶纳和格罗塞托省收集，并研究这些化合物作为品种和地理起源标记的可能用途。判别式因子分析（DFA）用于区分不同品种和位置。芹菜素和咖啡酰-果皮苷在品种之间显示出显着差异。DFA显示ligstroside，芹菜素和木犀草素在确定位点之间的差异方面影响最大，而总多酚，奥莱辛和羟基酪醇乙酸酯可以在同一省份的叶子之间分离。本研究的结果表明，酚类化合物的浓度，通过高分辨率质谱测量，可用作橄榄叶品种和地理起源的标记，可能还有橄榄相关的产品，以及跨越小的地理尺度（站点之间的距离小于50公里）。
