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Improved method for separation of silver nanoparticles synthesized using the Nyctanthes arbor-tristis shrub

. Sci., Vol. 13(1), 466-476, 2012. DOI: 10.3390%2Fijms13010466 [58] T. Theivasanthi, and M. Alagar, “Electrolytic synthesis and characterization of silver nanopowder”, Nano Biomed. Eng., Vol. 4, 58-65, 2012. DOI: 10.5101/nbe.v4i2.p58-65 [59] K. Shameli, M.B. Ahmad, E.A.J. Al-Mulla, N.A. Ibrahim, P. Shabanzadeh, A. Rustaiyan, Y. Abdollahi, S. Bagheri, S. Abdolmohammadi, M.S. Usman, and M. Zidan, “Green biosynthesis of silver nanoparticles using Callicarpa maingayi stem bark extraction”, Molecules, Vol. 17(7), 8506-8517, 2012. DOI: 10.3390/molecules17078506

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Mushrooms as Biomonitors of Heavy Metals Contamination in Forest Areas

Abstract

The aim of the research was to assess the level of contamination with heavy metals (manganese, iron, nickel, copper, zinc, cadmium and lead) in two forest areas selected in different places in Poland: the first one in the Swietokrzyskie Province (forests of the Staporkow Forest Division) and the second one in the Opolskie Province (forests of the Kup Forest Division). The degree of contamination of these forest areas with analytes was found using edible large-fruited mushrooms naturally occurring there - the research was carried out using passive biomonitoring method. Heavy metals in mushrooms (separately in stems and hats) as well as in soil samples were determined by atomic absorption spectrometry with excitation in flame (F-AAS). The obtained results were interpreted by assessing the degree of contamination of forest areas on the basis of concentrations of heavy metals in mushrooms. The obtained results indicate an increased accumulation of heavy metals in hats than in mushrooms stems. On the basis of the obtained data, significant contamination of forest areas with selected heavy metals was also found. This is confirmed by the possibility of using mushrooms as biomonitors in passive biomonitoring of forest areas, which are heavy metal accumulators. In the interpretation of the test results, the phytocumuling factor (PF) was also used. The degree of accumulation of heavy metals, from given forest areas - from soil to mushrooms - was assessed on the basis of determined PF coefficients. In addition, good bioavailability of the analysed analytes by mushrooms was found. Additionally, on the basis of the conducted studies, the possibility of mushroom consumption was assessed - they are not suitable for consumption due to the fact that the permissible concentration standards of heavy metals contained in mushrooms were exceeded.

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The Effect of Cadmium on Oxidative Stress in Beta vulgaris

Abstract

As a heavy metal, cadmium has strongly toxic effects on plants and can induce oxidative stress. It is absorbed by the roots and transported to the stems and leaves. The aim of the study was to evaluate the effect of various concentrations of cadmium on the metabolic activity of Beta vulgaris and assess the dependence of these processes on the content of metal in the plants. To demonstrate the effect of cadmium on metabolism, protein and photosynthetic pigment content, lipid peroxidation, and the activity of enzymes specific for oxidative stress in roots and shoots were measured. Seeds of B. vulgaris were treated with different concentrations of Cd supplied via a CdCl2 solution: 0 (control), 200, 300 and 400 mg/dm3. Results of the present study revealed increased GPOX activity as cadmium concentration rose, while SOD activity was stimulated by a low Cd concentration (200 mg/dm3) and reduced by high levels of Cd. Based on the present findings, it can be concluded that GPOX in B. vulgaris played a more important role in ROS scavenging than SOD did and was able to reduce the level of lipid peroxidation in plants. Cadmium, in the concentration range used, did not show any significant effect on protein or photosynthetic pigment content.

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Adsorption of nitrate from aqueous solution onto modified cassava (Manihot esculenta) straw / Adsorpcja azotanów z roztworu wodnego na zmodyfikowanej słomie manioku Manihot esculenta

pith and its recovery. Chemosphere. 2007;66:60-66. [13] Chai QH, Shen W, Zhang AL, Han WJ. Chinese cassava industry price supply elasticity. J Tsinghua University (Sci Technol). 2009;49:897-900. [14] Tao GC, Xie GH, Orberg H, Xiong SJ. A feasibility study on using cassava stems for the production of bioenergy in Guangxi Zhuang Autonomous Region. China. Eng Sci. 2011;13:107-112. [15] Du D, Hu ZY, Pu GQ. Energy efficiency and potentials of cassava fuel ethanol in Guangxi region of China. Energy Conversion and Manage. 2006

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Screening of Silver-Tolerant Bacteria from a Major Philippine Landfill as Potential Bioremediation Agents

;54(3):30-40. https://www.ncbi.nlm.nih.gov/pubmed/18382046 . [9] El-Ansary A, Al-Daihan S. On the toxicity of therapeutically used nanoparticles: an overview. J Toxicol. 2009. Article ID 754810. DOI:10.1155/2009/754810. [10] Greulich C, Kittler S, Epple M, Muhr G, Köller M. Studies on the biocompatibility and the interaction of silver nanoparticles with human mesenchymal stem cells (hMSCs). Langenbecks Arch Surg. 2009;394(3):495-502. DOI: 10.1007/s00423-009-0472-1. [11] Harzevili FD, Chen H. Microbial Biotechnology: Progress and Trends. CRC Press; 2017. ISBN

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Impact of Environmental Contaminants on Breast Cancer / Wpływ Zanieczyszczenia Środowiska Na Raka Piersi

AS, Dixon JM. Eur J Surg Oncol. 2003;29:475-479. DOI: 10.1016/S0748-7983(03)00010-6. [247] Tang J, Fernandez-Garcia I, Vijayakumar S, Martinez-Ruis H, Illa-Bochaca I, Nguyen DH, et al. Stem Cells. 2014;32:649-661. DOI: 10.1002/stem.1533. [248] Datta K, Hyduke DR, Suman S, Moon BH, Johnson MD, Fornace AJ Jr. Radiat Oncol. 2012; 7:205. DOI: 10.1186/1748-717X-7-205. [249] Imaoka T, Nishimura M, Doi K, Tani S, Ishikawa KI, Yamashita S, et al. Int J Cancer. 2014;134:1529-1538. DOI: 10.1002/ijc.28480. [250

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