Eleven important medicinal plants generally used by the people of Turkey for the treatment of common cold have been studied for their mineral contents.Eleven minor and major elements(essential,non-essential and toxic)...Eleven important medicinal plants generally used by the people of Turkey for the treatment of common cold have been studied for their mineral contents.Eleven minor and major elements(essential,non-essential and toxic)were identified in the Asplenium adiantum-nigrum L.,Althaea officinalis L.,Verbascum phlomoides L.,Euphorbia chamaesyce L.,Zizyphus jujube Miller,Peganum harmala L.,Arum dioscoridis Sm.,Sambucus nigra L.,Piper longum L.,Tussilago farfara L.and Elettaria cardamomum Maton by employing flame atomic absorption and emission spectrometry and electro-thermal atomic absorption spectrometry.Microwave digestion procedure for total concentration was applied under optimized conditions for dissolution of medicinal plants.Plant based biological certified reference materials(CRMs)served as standards for quantification.These elements are found to be present in varying concentrations in the studied plants.The baseline data presented in this work can be used in understanding the role of essential,non-essential and toxic elements in nutritive,preventive and therapeutic properties of medicinal plants.展开更多
Fish is considered one of the healthiest foods due to the high levels of several important cardioprotective compounds such as long chain omega-3 polyunsaturated fatty acids and vitamin E. However, due to widespread en...Fish is considered one of the healthiest foods due to the high levels of several important cardioprotective compounds such as long chain omega-3 polyunsaturated fatty acids and vitamin E. However, due to widespread environmental pollution, high levels of contaminants may also be present in fish and seafood samples, which may counteract the beneficial effects of consumption of this food. With this in mind, the aims of this study were: 1) to examine both toxic and essential chemical elements in seafood and river and sea fish samples sold in different Brazilian regions by inductively coupled plasma mass spectrometer (ICP-MS);2) to estimate the daily intake of these chemical elements by Brazilians. The toxic elements Ba, Cd, Pb, Sr, V and Sb were found in higher concentrations in seafood than in either sea or river fish, while As concentrations were higher in both seafood and sea fish than in river fish. On the other hand, Hg levels were higher in river and sea fish. Concentrations of the essential chemical elements Co, Mn, Cu, Fe, Mg, Zn and Mo were significantly higher in seafood compared with both sorts of fish except for Se, whose levels were similar in seafood and sea fish. Daily intake of all chemical elements was estimated on the basis of a calculation of the amount of fish consumed by Brazilian households (mean fish and seafood consumption of 11.0 g/person/day). The amount of toxic element in fish and seafood did not represent a risk for the Brazilian people. Moreover, fish and seafood seem to be a good source of selenium.展开更多
基金Financial support from the Unit of the Scientific Research Projects of Innü University(Grant no:2008/34)
文摘Eleven important medicinal plants generally used by the people of Turkey for the treatment of common cold have been studied for their mineral contents.Eleven minor and major elements(essential,non-essential and toxic)were identified in the Asplenium adiantum-nigrum L.,Althaea officinalis L.,Verbascum phlomoides L.,Euphorbia chamaesyce L.,Zizyphus jujube Miller,Peganum harmala L.,Arum dioscoridis Sm.,Sambucus nigra L.,Piper longum L.,Tussilago farfara L.and Elettaria cardamomum Maton by employing flame atomic absorption and emission spectrometry and electro-thermal atomic absorption spectrometry.Microwave digestion procedure for total concentration was applied under optimized conditions for dissolution of medicinal plants.Plant based biological certified reference materials(CRMs)served as standards for quantification.These elements are found to be present in varying concentrations in the studied plants.The baseline data presented in this work can be used in understanding the role of essential,non-essential and toxic elements in nutritive,preventive and therapeutic properties of medicinal plants.
文摘Fish is considered one of the healthiest foods due to the high levels of several important cardioprotective compounds such as long chain omega-3 polyunsaturated fatty acids and vitamin E. However, due to widespread environmental pollution, high levels of contaminants may also be present in fish and seafood samples, which may counteract the beneficial effects of consumption of this food. With this in mind, the aims of this study were: 1) to examine both toxic and essential chemical elements in seafood and river and sea fish samples sold in different Brazilian regions by inductively coupled plasma mass spectrometer (ICP-MS);2) to estimate the daily intake of these chemical elements by Brazilians. The toxic elements Ba, Cd, Pb, Sr, V and Sb were found in higher concentrations in seafood than in either sea or river fish, while As concentrations were higher in both seafood and sea fish than in river fish. On the other hand, Hg levels were higher in river and sea fish. Concentrations of the essential chemical elements Co, Mn, Cu, Fe, Mg, Zn and Mo were significantly higher in seafood compared with both sorts of fish except for Se, whose levels were similar in seafood and sea fish. Daily intake of all chemical elements was estimated on the basis of a calculation of the amount of fish consumed by Brazilian households (mean fish and seafood consumption of 11.0 g/person/day). The amount of toxic element in fish and seafood did not represent a risk for the Brazilian people. Moreover, fish and seafood seem to be a good source of selenium.
