Zlatić Nenad M, Stanković Milan S, Simić Zoran S
Department of Biology and Ecology, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, 34 000, Kragujevac, Republic of Serbia.
Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, 34 000, Kragujevac, Republic of Serbia.
Environ Monit Assess. 2017 Mar;189(3):110. doi: 10.1007/s10661-017-5831-8. Epub 2017 Feb 16.
The purpose of this comparative analysis is the determination of the total quantity of metals (Mg, Ca, K, Ni, Fe, Mn, Zn, Cu, Cr and Pb) in soil samples, above ground plant parts and tea made of plants Teucrium montanum and T. chamaedrys from different serpentine and calcareous habitats as well as of the total quantity of phenolic compounds and antioxidant activity. The obtained results showed that the quantities of certain metals (Mg, Fe, Ni and Mn) in the soil from the serpentine habitats were greater in comparison with other metals (Ca, Zn and Pb) which were more frequently found in the soil from the calcareous habitats. The results demonstrated that the analysed plant samples from the serpentine habitats contained higher quantity of Fe, Ni and Cr as opposed to the plant samples from the calcareous habitats which contained greater quantity of Ca and Zn. Although the studied species accumulate analysed metals in different quantities, depending on the substrate type, they are not hyperaccumulators of these metals. The use of these species from serpentine habitats for tea preparation is safe to a great extent, because in spite of the determined metal absorption by plant organs, the tea does not contain dangerous quantity of heavy metals. The results showed greater total quantity of phenolic compounds and the higher level of antioxidant activity in the plant samples from serpentine habitats in comparison with the samples from calcareous habitats, which is an indicator of one of the mechanisms of adaptation to the serpentine habitat conditions.
本比较分析的目的是测定来自不同蛇纹岩和钙质生境的土壤样品、地上植物部分以及由山地香科科（Teucrium montanum）和矮生香科科（T. chamaedrys）制成的茶叶中金属（镁、钙、钾、镍、铁、锰、锌、铜、铬和铅）的总量，以及酚类化合物的总量和抗氧化活性。所得结果表明，与在钙质生境土壤中更常见的其他金属（钙、锌和铅）相比，蛇纹岩生境土壤中某些金属（镁、铁、镍和锰）的含量更高。结果表明，与钙质生境的植物样品相比，蛇纹岩生境的分析植物样品中含有更高含量的铁、镍和铬，而钙质生境的植物样品中钙和锌的含量更高。尽管所研究的物种根据底物类型以不同数量积累分析的金属，但它们不是这些金属的超积累植物。在很大程度上，使用来自蛇纹岩生境的这些物种制备茶叶是安全的，因为尽管植物器官吸收了已测定的金属，但茶叶中不含有危险数量的重金属。结果表明，与钙质生境的样品相比，蛇纹岩生境的植物样品中酚类化合物的总量更高，抗氧化活性水平更高，这是适应蛇纹岩生境条件的机制之一的指标。
