Lukas Brigitte, Bragagna Laura, Starzyk Katharina, Labedz Klaudia, Stolze Klaus, Novak Johannes
Institute of Animal Nutrition and Functional Plant Compounds, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria.
Plants (Basel). 2021 Mar 24;10(4):615. doi: 10.3390/plants10040615.
This investigation focused on the qualitative and quantitative composition of polyphenolic compounds of Mediterranean northern shore and six further, partly sympatric species (, , , , ). Aqueous extracts of 1153 individual plants from 13 countries were analyzed via high performance liquid chromatography (HPLC). The extracts of were primarily composed of two ellagitannins (punicalagin and punicalagin gallate) and nine flavonol glycosides (myricetin and quercetin glycosides, with m-3--rhamnoside as the dominant main compound). Differences in the proportions of punicalagin derivatives and flavonol glycosides allowed the classification into two chemovariants. Plants containing punicalagin derivatives and flavonol glycosides were especially abundant in the western and central Mediterranean areas and in Cyprus. From Albania eastwards, punicalagin and punicalagin gallate were of much lesser importance and the predominant chemovariant there was a nearly pure flavonol type. With its two chemovariants, takes a central position between the flavonol-rich, purple-flowered clade (besides , here represented by and ) and the more ellagitannin-rich, white- or whitish-pink-flowered clade (here represented by , , and ). The median antioxidative capacity of plant material was, with 166 mg Trolox equivalents/g dry wt, about half of the antioxidative capacity of (301 mg te/g dry wt), the species with the highest antioxidative potential.
本研究聚焦于地中海北岸以及另外六个部分同域分布的物种（ 、 、 、 、 ）中多酚类化合物的定性和定量组成。通过高效液相色谱法（HPLC）分析了来自13个国家的1153株单株植物的水提取物。 的提取物主要由两种鞣花单宁（石榴皮苷和没食子酰石榴皮苷）和九种黄酮醇苷（杨梅素和槲皮素苷，其中间苯三酚 - 3 - 鼠李糖苷为主要的主要化合物）组成。石榴皮苷衍生物和黄酮醇苷比例的差异使得可以分为两种化学变种。含有石榴皮苷衍生物和黄酮醇苷的植物在地中海西部和中部地区以及塞浦路斯特别丰富。从阿尔巴尼亚向东，石榴皮苷和没食子酰石榴皮苷的重要性要小得多，那里主要的化学变种是几乎纯的黄酮醇类型。凭借其两种化学变种， 在富含黄酮醇的紫色花进化枝（除了 ，这里由 和 代表）和富含鞣花单宁的白色或浅粉红花进化枝（这里由 、 、 和 代表）之间占据中心位置。 植物材料的抗氧化能力中位数为166毫克 Trolox 当量/克干重，约为抗氧化能力最高的物种 的一半（301毫克 te/克干重）。
