151
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Barone G, Giacominelli-Stuffler R, Storelli MM. Evaluation of trace metal and polychlorinated biphenyl levels in tea brands of different origin commercialized in Italy. Food Chem Toxicol 2015; 87:113-9. [PMID: 26683308 DOI: 10.1016/j.fct.2015.12.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 11/30/2015] [Accepted: 12/07/2015] [Indexed: 10/22/2022]
Abstract
The objectives of this study were to investigate the trace element (Hg, Cd, Pb, Cu, Zn, Ni, Fe, Cr and Se) and polychlorinated biphenyl (PCBs) content of several commercially available brands of green and black tea marketed in Italy. The concentrations these chemicals were found to be variable and largely dependent upon the type and brand of analysed tea. The most abundant element among the essential elements was Fe, followed by Zn, Cu, Se, Ni and Cr, whereas Pb was the predominant among the tested nonessential elements followed by Hg and Cd. Assessment based on several available guidelines showed that element content were low, except for Hg and Ni. The PCBs concentrations were generally low, with a homologue profile dominated by low-chlorinated congeners, namely three- and tetra-PCBs accounting for more than 60% of the total residue. Apart from trace elements, this is the first study documenting in detail the concentrations and congener distribution of PCBs in tea samples of different origin.
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Affiliation(s)
- Grazia Barone
- Biosciences, Biotechnologies and Biopharmaceutical Department, University of Bari, Strada Prov. le Per Casamassima Km 3, 70010 Valenzano, BA, Italy
| | | | - Maria M Storelli
- Biosciences, Biotechnologies and Biopharmaceutical Department, University of Bari, Strada Prov. le Per Casamassima Km 3, 70010 Valenzano, BA, Italy.
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152
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Peng CY, Cai HM, Zhu XH, Li DX, Yang YQ, Hou RY, Wan XC. Analysis of Naturally Occurring Fluoride in Commercial Teas and Estimation of Its Daily Intake through Tea Consumption. J Food Sci 2015; 81:H235-9. [DOI: 10.1111/1750-3841.13180] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 11/07/2015] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Xiao-hui Zhu
- State Key Laboratory of Tea Plant Biology and Utilization; Anhui Agricultural Univ; Hefei 230036 Anhui People's Republic of China
| | - Da-xiang Li
- State Key Laboratory of Tea Plant Biology and Utilization; Anhui Agricultural Univ; Hefei 230036 Anhui People's Republic of China
| | - Yun-qiu Yang
- State Key Laboratory of Tea Plant Biology and Utilization; Anhui Agricultural Univ; Hefei 230036 Anhui People's Republic of China
| | - Ru-yan Hou
- State Key Laboratory of Tea Plant Biology and Utilization; Anhui Agricultural Univ; Hefei 230036 Anhui People's Republic of China
| | - Xiao-chun Wan
- State Key Laboratory of Tea Plant Biology and Utilization; Anhui Agricultural Univ; Hefei 230036 Anhui People's Republic of China
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153
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Guo Y, Zhang S, Lai L, Wang G. Rare earth elements in Oolong tea and their human health risks associated with drinking tea. J Food Compost Anal 2015. [DOI: 10.1016/j.jfca.2015.08.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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154
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Liao M, Shi Y, Cao H, Hua R, Tang F, Wu X, Tang J. Dissipation behavior of octachlorodipropyl ether residues during tea planting and brewing process. ENVIRONMENTAL MONITORING AND ASSESSMENT 2015; 188:551. [PMID: 27604890 PMCID: PMC5014881 DOI: 10.1007/s10661-016-5573-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 08/31/2016] [Indexed: 05/22/2023]
Abstract
The dissipation behavior of octachlorodipropyl ether (OCDPE) residues in fresh tea shoots and in tea prepared under field conditions was investigated, and the transfer of residues from brewed tea to tea infusion was determined. OCDPE levels in tea shoots, prepared tea, tea infusion, and spent tea leaves were determined using a sensitive and simple method. The dissipation of OCDPE is fairly slow in tea shoots and prepared tea, with half-life values of 5.10 and 5.46 days, respectively. The degradation rates of OCDPE residues in tea processing were 23.9-43.1 %. The terminal residues of OCDPE in tea shoots and prepared tea samples after 20 and 30 days of OCDPE application were higher than 0.01 mg/kg. However, OCDPE's transfer rates from brewed tea to tea infusion were only 6.0-14.8 %. Further studies on risk assessment of OCDPE residue in tea on the basis of the relationship of OCDPE in prepared tea and infusion are warranted.
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Affiliation(s)
- Min Liao
- School of Plant Protection, Anhui Agricultural University, Hefei, 230036, China
| | - Yanhong Shi
- Provincial Key Laboratory for Agri-Food Safety, Hefei, 230036, Anhui, China
- School of Resource & Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Haiqun Cao
- School of Plant Protection, Anhui Agricultural University, Hefei, 230036, China.
- Provincial Key Laboratory for Agri-Food Safety, Hefei, 230036, Anhui, China.
| | - Rimao Hua
- Provincial Key Laboratory for Agri-Food Safety, Hefei, 230036, Anhui, China
- School of Resource & Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Feng Tang
- School of Resource & Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Xiangwei Wu
- Provincial Key Laboratory for Agri-Food Safety, Hefei, 230036, Anhui, China
- School of Resource & Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Jun Tang
- Provincial Key Laboratory for Agri-Food Safety, Hefei, 230036, Anhui, China
- School of Resource & Environment, Anhui Agricultural University, Hefei, 230036, China
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155
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Pignitter M, Stolze K, Jirsa F, Gille L, Goodman BA, Somoza V. Effect of Copper on Fatty Acid Profiles in Non- and Semifermented Teas Analyzed by LC-MS-Based Nontargeted Screening. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:8519-8526. [PMID: 26335726 DOI: 10.1021/acs.jafc.5b02792] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Unsaturated fatty acids are well-known precursors of aroma compounds, which are considered important for green tea quality. Due to the known copper-induced oxidation of unsaturated fatty acids and the broad variability of the amount of copper present in tea infusions, this paper investigates the influence of copper, added at a nontoxic concentration (300 μM) to non- and semifermented teas, on the degradation of fatty acids and fatty acid hydroperoxides thereof. The abundance of fatty acids in green and oolong tea was determined by means of a nontargeted approach applying high-resolution MS/MS. As a result, most of the fatty acids in green and oolong tea were already oxidized prior to copper addition. Addition of 300 μM CuSO4 to the oolong tea sample resulted in a decrease of 13-hydroperoxy-9Z,11E-octadecadienoic acid, an important flavor precursor, from 0.12 ± 0.02 to 0.05 ± 0.01 μM (p = 0.035), and other oxidized fatty acids decreased as well. However, copper-induced degradation of oxidized fatty acids was less pronounced in green tea compared to oolong tea, most likely due to the formation of copper complexes with low-molecular-weight compounds as evidenced by electron paramagnetic resonance spectroscopy.
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Affiliation(s)
- Marc Pignitter
- Department of Nutritional and Physiological Chemistry, Faculty of Chemistry, University of Vienna , 1090 Vienna, Austria
| | - Klaus Stolze
- Institute of Animal Nutrition and Functional Plant Compounds, University of Veterinary Medicine Vienna , 1210 Vienna, Austria
| | - Franz Jirsa
- Department of Inorganic Chemistry, University of Vienna , 1090 Vienna, Austria
- Department of Zoology, University of Johannesburg , P.O. Box 524, Auckland Park, 2006 South Africa
| | - Lars Gille
- Institute of Pharmacology and Toxicology, University of Veterinary Medicine Vienna , 1210 Vienna, Austria
| | - Bernard A Goodman
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University , 530004 Nanning, Guangxi, China
| | - Veronika Somoza
- Department of Nutritional and Physiological Chemistry, Faculty of Chemistry, University of Vienna , 1090 Vienna, Austria
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156
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Parviz M, Eshghi N, Asadi S, Teimoory H, Rezaei M. Investigation of heavy metal contents in infusion tea samples of Iran. TOXIN REV 2015. [DOI: 10.3109/15569543.2015.1072562] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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157
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Zhong WS, Ren T, Zhao LJ. Determination of Pb (Lead), Cd (Cadmium), Cr (Chromium), Cu (Copper), and Ni (Nickel) in Chinese tea with high-resolution continuum source graphite furnace atomic absorption spectrometry. J Food Drug Anal 2015; 24:46-55. [PMID: 28911408 PMCID: PMC9345429 DOI: 10.1016/j.jfda.2015.04.010] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Revised: 03/16/2015] [Accepted: 05/05/2015] [Indexed: 11/30/2022] Open
Abstract
The contents of lead, cadmium, chromium, copper, and nickel were determined in 25 tea samples from China, including green, yellow, white, oolong, black, Pu’er, and jasmine tea products, using high-resolution continuum source graphite furnace atomic absorption spectrometry. The methods used for sample preparation, digestion, and quantificational analysis were established, generating satisfactory analytical precisions (represented by relative standard deviations ranging from 0.6% to 2.5%) and recoveries (98.91–101.32%). The lead contents in tea leaves were 0.48–10.57 mg/kg, and 80% of these values were below the maximum values stated by the guidelines in China. The contents of cadmium and chromium ranged from 0.01 mg/kg to 0.39 mg/kg and from 0.27 mg/kg to 2.45 mg/kg, respectively, remaining in compliance with the limits stipulated by China’s Ministry of Agriculture. The copper contents were 7.73–63.71 mg/kg; only 64% of these values complied with the standards stipulated by the Ministry of Agriculture. The nickel contents ranged from 2.70 mg/kg to 13.41 mg/kg. Consequently, more attention must be paid to the risks of heavy metal contamination in tea. The quantitative method established in this work lays a foundation for preventing heavy metal toxicity in human from drinking tea and will help establish regulations to control the contents of heavy metals in tea.
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Affiliation(s)
- Wen-Si Zhong
- The Experimental High School Attached to Beijing Normal University, Beijing, China
| | - Ting Ren
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China
| | - Li-Jiao Zhao
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China.
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158
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Determination of essential and non-essential elements in green and black teas by FAAS and ICP OES simplified – multivariate classification of different tea products. Microchem J 2015. [DOI: 10.1016/j.microc.2015.02.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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159
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Santos LN, Gonzalez MH, Moura MF, Donati GL, Nóbrega JA. Evaluation of Tungsten Coil Atomic Emission Spectrometry for the Direct Determination of Al in Tea Infusions and Iced Tea. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0212-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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160
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Protective effect of black tea extract against aluminium chloride-induced Alzheimer's disease in rats: A behavioural, biochemical and molecular approach. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.05.001] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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161
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Li L, Fu QL, Achal V, Liu Y. A comparison of the potential health risk of aluminum and heavy metals in tea leaves and tea infusion of commercially available green tea in Jiangxi, China. ENVIRONMENTAL MONITORING AND ASSESSMENT 2015; 187:228. [PMID: 25840958 DOI: 10.1007/s10661-015-4445-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 03/18/2015] [Indexed: 05/21/2023]
Abstract
Heavy metals and Al in tea products are of increasing concern. In this study, contents of Al, Cd, Co, Cr, Cu, Ni, and Pb in commercially available green tea and its infusions were measured by ICP-MS and ICP-AES. Both target hazard quotient (THQ) and hazard index (HI) were employed to assess the potential health risk of studied metals in tea leaves and infusions to drinkers. Results showed that the average contents of Al, Cd, Co, Cr, Cu, Ni, and Pb in tea leaves were 487.57, 0.055, 0.29, 1.63, 17.04, 7.71, and 0.92 mg/kg, respectively. Except for Cu, metal contents were within their maximum limits (1, 5, 30, and 5 mg/kg for Cd, Cr, Cu, and Pb, respectively) of current standards for tea products. Concentrations of metals in tea infusions were all below their maximum limits (0.2, 0.005, 0.05, 1.0, 0.02, and 0.01 mg/L for Al, Cd, Cr(VI), Cu, Ni, and Pb, respectively) for drinking water, and decreased with the increase of infusion times. Pb, Cd, Cu, and Al mainly remained in tea leaves. The THQ from 2.33 × 10(-5) to 1.47 × 10(-1) and HI from1.41 × 10(-2) to 3.45 × 10(-1) values in tea infusions were all less than 1, suggesting that consumption of tea infusions would not cause significant health risks for consumers. More attention should be paid to monitor Co content in green tea. Both THQ and HI values decreased with the increase of infusion times. Results of this study suggest that tea drinkers should discard the first tea infusion and drink the following infusions.
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Affiliation(s)
- Lanhai Li
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037, China
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162
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Malandrino M, Giacomino A, Abollino O, Allio A, Toniolo R, Colombo ML. Determination of major, minor and trace elements in Glyceric Macerates and Mother Tinctures and in the starting plant materials. J Pharm Biomed Anal 2015; 106:167-78. [PMID: 25554479 DOI: 10.1016/j.jpba.2014.10.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 10/30/2014] [Accepted: 10/31/2014] [Indexed: 11/20/2022]
Abstract
Glyceric Macerates (GMs) and Mother Tinctures (MTs) are liquid preparations obtained from plant buds (for GMs) and flowers, leaves or roots (for MT) by extraction with a mixture of solvents. Their quality depends on the quality of the plant materials and on the preparation procedures. In this work we determined the concentrations of major, minor and trace elements in buds, flowers and other plant components and in the GMs and MTs obtained from them by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) after microwave mineralization. To the best of our knowledge, this procedure has been applied for the first time here to the analysis of buds. We have taken into account spectral interferences and other causes of errors. Analogies and differences with regard to the method reported by European Pharmacopoeia for heavy metal determination in herbal drugs have been highlighted. The experimental results have been interpreted with chemometric techniques. No significant contamination was detected during the manufacturing step. Element concentrations in GMs and MTs, taking into account their daily dosages, are lower than acceptable intake levels.
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Affiliation(s)
- Mery Malandrino
- Department of Chemistry, University of Torino, Via Giuria 5, Torino, Italy
| | - Agnese Giacomino
- Department of Drug Science and Technology, University of Torino, Via Giuria 9, Torino, Italy
| | - Ornella Abollino
- Department of Chemistry, University of Torino, Via Giuria 5, Torino, Italy.
| | - Arianna Allio
- Department of Drug Science and Technology, University of Torino, Via Giuria 9, Torino, Italy
| | - Rosanna Toniolo
- Department of Food Science, University of Udine, Via Cotonificio 108, Udine, Italy
| | - Maria Laura Colombo
- Department of Drug Science and Technology, University of Torino, Via Giuria 9, Torino, Italy
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163
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Juranović Cindrić I, Zeiner M, Konanov DM, Stingeder G. Metal characterization of white hawthorn organs and infusions. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:1798-1802. [PMID: 25630398 DOI: 10.1021/jf504474t] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hawthorn is one of the most commonly used European and North American phytopharmaceuticals. Because there is no information on metals in seeds, and only rare data for leaves and flowers, the aim of the present study was elemental analysis of the white hawthorn (Crataegus monogyna) by inductively coupled plasma emission spectrometry (ICP-AES) or inductively coupled plasma mass spectrometry (ICP-MS) after digestion in a microwave-assisted system. The limits of detection are below 2 μg/g for ICP-AES and 0.5 μg/g for ICP-MS. Hawthorn leaves and flowers contain essential elements at concentrations (mean values, RSD 2-8%) in mg/g of Ca, 1-4; K, 4-5; Mg, 1-2; and Na, <0.2); and at μg/g levels of Ba, 1-10; Co, <0.16; Cr, <1.4; Cu, 0.6-7; Fe, 1-37; Li, <0.5; Mn, 1-13; Mo, <0.17; Ni, <0.6; Sr, 0.2-2; and Zn, 1-31. Toxic elements were found in low quantities: As (<0.04), Cd (0.04-0.1), and Pb (0.1-2). Up to 10% of the metals is extracted into the infusions. The analyzed plant parts and infusions contain essential elements justifying its use as a medicinal plant, whereas the low quantities of harmful elements will not pose any risk to humans when consumed.
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Affiliation(s)
- Iva Juranović Cindrić
- Laboratory of Analytical Chemistry, Department of Chemistry, Faculty of Science, University of Zagreb , Horvatovac 102a, 10000 Zagreb, Croatia
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164
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Concentrations and solubility of selected trace metals in leaf and bagged black teas commercialized in Poland. J Food Drug Anal 2015; 23:486-492. [PMID: 28911707 PMCID: PMC9351806 DOI: 10.1016/j.jfda.2014.08.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 08/16/2014] [Accepted: 08/19/2014] [Indexed: 12/24/2022] Open
Abstract
The objective of this study was to determine the concentrations of heavy metals in bagged and leaf black teas of the same brand and evaluate the percentage transfer of metals to tea infusion to assess the consumer exposure. Ten leaf black teas and 10 bagged black teas of the same brand available in Poland were analyzed for Zn, Mn, Cd, Pb, Ni, Co, Cr, Al, and Fe concentrations both in dry material and their infusion. The bagged teas contained higher amounts of Pb, Mn, Fe, Ni, Al, and Cr compared with leaf teas of the same brand, whereas the infusions of bagged tea contained higher levels of Mn, Ni, Al, and Cr compared with leaf tea infusions. Generally, the most abundant trace metals in both types of tea were Al and Mn. There was a wide variation in percentage transfer of elements from the dry tea materials to the infusions. The solubility of Ni and Mn was the highest, whereas Fe was insoluble and only a small portion of this metal content may leach into infusion. With respect to the acceptable daily intake of metals, the infusions of both bagged and leaf teas analyzed were found to be safe for human consumption.
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165
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Juranović Cindrić I, Zeiner M, Požgaj M, Šilić T, Stingeder G. Elemental characterisation of the medical plant Alchemilla velebitica. J Trace Elem Med Biol 2015; 31:274-8. [PMID: 25451083 DOI: 10.1016/j.jtemb.2014.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 09/15/2014] [Accepted: 09/18/2014] [Indexed: 10/24/2022]
Abstract
Alchemilla, commonly called "lady's mantle", is a genus of herbaceous perennial plants belonging to the family Rosaceae. The species Alchemilla velebitica is found only in Southern Europe, like in the Croatian National Park Northern Velebit. Its benefits, such as a astringent and emmenagogue activity as well as wound healing are correlated to the organic compounds found in the plant, but also certain trace elements are known to reduce skin lesions, such as zinc, selenium, copper, manganese, silicon and lithium. Thus the objective of the present study was the elemental characterization of leaves, blossoms and roots of A. velebitica. After acidic microwave assisted digestion the concentrations of selected essential and trace elements were determined by inductively coupled plasma--atomic emission spectrometry and inductively coupled plasma--mass spectrometry. Other minor elements, such as Al, B, Cu, Fe, Mn, Sr and Zn are also found in leaves, blossoms and roots with contents in μg/kg range. The preparation of decoctions and the extraction yields of the elements of interest are calculated.
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Affiliation(s)
- Iva Juranović Cindrić
- Laboratory of Analytical Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
| | - Michaela Zeiner
- Division of Analytical Chemistry, Department of Chemistry, BOKU - University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria.
| | - Martina Požgaj
- Laboratory of Analytical Chemistry, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
| | - Tea Šilić
- Velebit Botanic Garden, Northern Velebit National Park Public Institution, Krasno 96, 53274 Krasno, Croatia
| | - Gerhard Stingeder
- Division of Analytical Chemistry, Department of Chemistry, BOKU - University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria
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166
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Karak T, Sonar I, Paul RK, Frankowski M, Boruah RK, Dutta AK, Das DK. Aluminium dynamics from soil to tea plant (Camellia sinensis L.): is it enhanced by municipal solid waste compost application? CHEMOSPHERE 2015; 119:917-926. [PMID: 25259883 DOI: 10.1016/j.chemosphere.2014.08.067] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 07/09/2014] [Accepted: 08/26/2014] [Indexed: 05/24/2023]
Abstract
Application of municipal solid waste compost (MSWC) in tea (Camellia sinensis L.) cultivation can increase the fertility status of soils and thus enhance the plant growth. The present study attempts at application of MSWC in tea (TV1 and TV23 clones) cultivation to assess the effect of different doses of MSWC on growth and translocation potential of Al on this plant as well as fate of Al in soil, through the calculation of a risk assessment code (RAC). The sequential extraction of Al in MSWC amended soils showed that the fractionation of Al in soil changed after compost application, with an overall increase of the fractions associated to with Fe-Mn oxides, organic and of the residual fraction. The accumulation of Al in different parts ofC. sinensisL., grown on MSWC amended soil effected an overall increased growth of the plant with increasing doses of MSWC. According to RAC, Al falls in medium to high risk, though no adverse effect on plant health was observed. Tea plants were found to adapt well to MSWC amended soils. However, long term field trials are necessary to completely assess the risk of Al accumulation in soils upon MSWC application. Hierarchical cluster analysis was applied aiming to check for the presence of homogenous groups among different treatments. It was found that in both TV1 and TV23, treatments formed two different groups.
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Affiliation(s)
- Tanmoy Karak
- Upper Assam Advisory Centre, Tea Research Association, Dikom 786101, Assam, India.
| | - Indira Sonar
- Upper Assam Advisory Centre, Tea Research Association, Dikom 786101, Assam, India
| | - Ranjit K Paul
- Indian Agricultural Statistics Research Institute, New Delhi 110012, India
| | - Marcin Frankowski
- Department of Water and Soil Analysis, Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89 b, 61-614 Poznań, Poland
| | - Romesh K Boruah
- Upper Assam Advisory Centre, Tea Research Association, Dikom 786101, Assam, India
| | - Amrit K Dutta
- Upper Assam Advisory Centre, Tea Research Association, Dikom 786101, Assam, India
| | - Dilip K Das
- Department of Agricultural Chemistry and Soil Science, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur 741252, Nadia, West Bengal, India
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167
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Anal JMH. Trace and Essential Elements Analysis in Cymbopogon citratus (DC.) Stapf Samples by Graphite Furnace-Atomic Absorption Spectroscopy and Its Health Concern. J Toxicol 2014; 2014:690758. [PMID: 25525430 PMCID: PMC4267167 DOI: 10.1155/2014/690758] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 11/14/2014] [Indexed: 11/17/2022] Open
Abstract
Cymbopogon citratus (DC.) Stapf commonly known as lemon grass is used extensively as green tea and even as herbal tea ingredient across the world. Plants have the ability to uptake metals as nutrient from the soil and its environment which are so essential for their physiological and biochemical growth. Concentrations of these twelve trace elements, namely, Mg, Ca, Cr, Mn, Fe, Ni, Cu, Zn, Mo, As, Cd, and Pb, are analysed by graphite furnace-atomic absorption spectroscopy (GF-AAS) and are compared with the permissible limits of FAO/WHO, ICMR, and NIH, USA, which are found to be within permissible limits. Toxic metals like As, Cd, and Pb, analysed are within the tolerable daily diet limit and at low concentration.
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Affiliation(s)
- Jasha Momo H. Anal
- Elemental Analysis Section, Sophisticated Analytical Instrument Facility (SAIF), North Eastern Hill University, Shillong, Meghalaya 793022, India
- Center for Advanced Studies in Chemistry, North Eastern Hill University, Shillong, Meghalaya 793022, India
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168
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Zeiner M, Juranović Cindrić I, Požgaj M, Pirkl R, Šilić T, Stingeder G. Influence of soil composition on the major, minor and trace metal content of Velebit biomedical plants. J Pharm Biomed Anal 2014; 106:153-8. [PMID: 25454388 DOI: 10.1016/j.jpba.2014.10.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 10/10/2014] [Accepted: 10/11/2014] [Indexed: 10/24/2022]
Abstract
The use of medical herbs for the treatment of many human diseases is increasing nowadays due to their mild features and low side effects. Not only for their healing properties, but also for their nutritive value supplementation of diet with various herbs is recommended. Thus also their analysis is of rising importance. While total elemental compositions are published for many common herbs, the origin of toxic as well as beneficial elements is not yet well investigated. Thus different indigenous medicinal plants, namely Croatian spruce (Picea abies), savory (Satureja montana L.), mountain yarrow (Achillea clavennae), showy calamint (Calamintha grandiflora), micromeria (Micromeria croatica), yellow gentian (Gentiana lutea) and fir (Abies alba) together with soil samples were collected in the National Park Northern Velebit. The macro- and trace elements content, after microwave digestion, was determined by inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and inductively coupled plasma mass spectroscopy (ICP-MS). The study focuses on the one hand on essential elements and on the other hand on non-essential elements which are considered as toxic for humans, covering in total Al, As, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Sr and Zn.
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Affiliation(s)
- Michaela Zeiner
- Division of Analytical Chemistry, Department of Chemistry, BOKU - University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria.
| | - Iva Juranović Cindrić
- Laboratory of Analytical Chemistry, Faculty of Science, Universty of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
| | - Martina Požgaj
- Laboratory of Analytical Chemistry, Faculty of Science, Universty of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
| | - Raimund Pirkl
- Division of Analytical Chemistry, Department of Chemistry, BOKU - University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria
| | - Tea Šilić
- Velebit Botanic Garden, Northern Velebit National Park Public Institution, Krasno 96, 53274 Krasno, Croatia
| | - Gerhard Stingeder
- Division of Analytical Chemistry, Department of Chemistry, BOKU - University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria
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169
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Lo Turco V, Di Bella G, Potortì AG, Fede MR, Dugo G. Determination of plasticizer residues in tea by solid phase extraction–gas chromatography–mass spectrometry. Eur Food Res Technol 2014. [DOI: 10.1007/s00217-014-2344-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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170
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Karak T, Paul RK, Sonar I, Sanyal S, Ahmed KZ, Boruah RK, Das DK, Dutta AK. Chromium in soil and tea ( Camellia sinensis L.) infusion: Does soil amendment with municipal solid waste compost make sense? Food Res Int 2014; 64:114-124. [DOI: 10.1016/j.foodres.2014.06.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 05/29/2014] [Accepted: 06/04/2014] [Indexed: 11/26/2022]
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171
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Abd El-Aty A, Choi JH, Rahman MM, Kim SW, Tosun A, Shim JH. Residues and contaminants in tea and tea infusions: a review. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2014; 31:1794-804. [DOI: 10.1080/19440049.2014.958575] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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172
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Determination of essential mineral concentrations in some turkish teas and the effect of lemon addition. Food Sci Biotechnol 2014. [DOI: 10.1007/s10068-014-0091-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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173
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Levels of Cu, Zn, Pb, and Cd in the leaves of the tea plant (Camellia sinensis) and in the soil of Gilan and Mazandaran farms of Iran. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2014. [DOI: 10.1007/s11694-014-9186-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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174
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Speciation of chromium and its distribution in tea leaves and tea infusion using titanium dioxide nanotubes packed microcolumn coupled with inductively coupled plasma mass spectrometry. Food Chem 2014; 150:254-9. [DOI: 10.1016/j.foodchem.2013.10.150] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 10/02/2013] [Accepted: 10/26/2013] [Indexed: 11/21/2022]
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175
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Yang T, Li H, Hu X, Li J, Hu J, Liu R, Deng ZY. Effects of fertilizing with N, p, se, and zn on regulating the element and functional component contents and antioxidant activity of tea leaves planted in red soil. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:3823-3830. [PMID: 24745373 DOI: 10.1021/jf5004286] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
New fertilizing strategies (with exogenetic N, P, Se, and Zn) were explored to regulate the element (Se, Zn, Mn, and Al) and functional component (polyphenol, catechins, free amino acid, polysaccharide, and caffeine) contents of new (a bud and two leaves, grown for about 10 days) and old tea leaves (grown for >3 months) cultivated in a hilly red soil region. Using four different fertilizing strategies (A, Se + Zn; B, Se + Zn + N; C, Se + Zn + P; D, Se + Zn + N + P), the Al and Mn contents of tea leaves in both new and old leaves were significantly decreased. Meanwhile, the contents of Se and Zn were increased, and the contents of some functional components as well as the antioxidant activities in tea leaves were improved. In particular, fertilizing strategy C showed the highest Se (0.444 μg/kg), total polyphenol (28.294%), and catechins (131.852 mg/g) contents and antioxidant activities (DPPH, 95.06%; FRAP, 3.81 mmol FeSO4/g; reducing power, 1.26) as well as the lowest Al (222.005 mg/kg) content among these four strategies, whereas fertilizing strategy B showed the highest Zn (34.235 mg/kg), total free amino acid (5.60%), tea polysaccharide (5.79%), and caffeine (56.684 mg/g) contents as well as the lowest Mn content (747.658 mg/kg). It has been proven that exogenetic elements (N, P, Se, and Zn) as fertilizers could be an effective way to produce tea leaves with higher Se, Zn, and functional component contents and antioxidant activity as well as lower Al and Mn contents in a red soil region.
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Affiliation(s)
- Tingting Yang
- State Key Laboratory of Food Science and Technology, Nanchang University , Nanchang 330047, China
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176
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Chen Y, Deng J, Wang Y, Liu B, Ding J, Mao X, Zhang J, Hu H, Li J. Study on discrimination of white tea and albino tea based on near-infrared spectroscopy and chemometrics. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2014; 94:1026-1033. [PMID: 23983143 DOI: 10.1002/jsfa.6376] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 08/19/2013] [Accepted: 08/23/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND White tea and albino tea have their own nutritional characteristics, but from the appearance they are quite similar to each other. It is not easy to distinguish them with existing analytical tools or by visual inspection. The current study proposed a rapid method to discriminate them based on near-infrared (NIR) spectroscopy associated with supervised pattern recognition methods. RESULTS For this purpose, discriminant partial least-squares (DPLS) and discriminant analysis (DA) were employed to build classification models on the basis of a reduced subset of wavenumbers and different pretreatment methods. A completely independent validation set was also used to test the model performance. The results of the DA model showed that with the SNV Karl Norris derivative spectral pre-treatment samples from the two different origins could be 100% correctly discriminated. Similarly, for the DPLS model, the best classification results were obtained with the multiplicative scattering correction (MSC) + first derivative spectral pre-treatments; the accuracy of identification was 98.48% for the calibration set and 100% for the validation set. CONCLUSION The overall results demonstrated that NIR spectroscopy with pattern recognition could be successfully applied to discriminate white tea and albino tea quickly and non-destructively without the need for various analytical determinations.
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Affiliation(s)
- Yi Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, People's Republic of China
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177
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Gao HJ, Zhao Q, Zhang XC, Wan XC, Mao JD. Localization of fluoride and aluminum in subcellular fractions of tea leaves and roots. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:2313-9. [PMID: 24548055 DOI: 10.1021/jf4038437] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The tea plant is a fluoride (F) and aluminum (Al) hyperaccumulator. High concentrations of F and Al have always been found in tea leaves without symptoms of toxicity, which may be related to the special localization of F and Al in tea leaves. In this study, we for the first time determined the subcellular localization of F and Al in tea roots and leaves and provided evidence of the detoxification mechanisms of high concentrations of F and Al in tea plants. Results revealed that 52.3 and 71.8% of the total F accumulated in the soluble fraction of tea roots and leaves, and vacuoles contained 98.1% of the total F measured in the protoplasts of tea leaves. Cell walls contained 69.8 and 75.2% of the total Al detected in the tea roots and leaves, respectively, and 73.2% of Al sequestered in cell walls was immobilized by pectin and hemicellulose components. Meanwhile, 88.3% of the Al measured in protoplasts was stored in the vacuoles of tea leaves. Our results suggested that the subcellular distributions of F and Al in tea plants play two important roles in the detoxification of F and Al toxicities. First, most of the F and Al was sequestered in the vacuole fractions in tea leaves, which could reduce their toxicities to organelles. Second, Al can be immobilized in the pectin and hemicellulose components of cell walls, which could suppress the uptake of Al by tea roots.
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Affiliation(s)
- Hong-jian Gao
- School of Resources and Environment, Anhui Agricultural University , Hefei 230036, People's Republic of China
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178
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Masek A, Chrzescijanska E, Kosmalska A, Zaborski M. Characteristics of compounds in hops using cyclic voltammetry, UV-VIS, FTIR and GC-MS analysis. Food Chem 2014; 156:353-61. [PMID: 24629980 DOI: 10.1016/j.foodchem.2014.02.005] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 12/18/2013] [Accepted: 02/03/2014] [Indexed: 02/03/2023]
Abstract
The article presents the antioxidant properties of the extracts of hop EI and EII, by the electrochemical methods on a platinum electrode and comparative analysis of the composition of the extracts of hops using UV-VIS, FTIR and GC-MS methods. The hops extract EI, was obtained from the waste of the hops cone. The hops extract EII, was obtained from the hops cone itself. Hops contain a wide range of polyphenolic compounds with antioxidant properties divided in various chemical classes. Flavonoids and other polyphenolic compounds contained in hops show antioxidant capacity because of the presence of hydroxyl groups in various configurations and numbers within their molecules. The electrochemical properties and antioxidant capacity of hop samples were determined to select the most effective antioxidant. Based on the cyclic and pulse voltammograms, it was observed that hop extract EI contains polyphenols that are oxidised at a less positive potential than extract EII, i.e., it shows better antioxidant capacity. From the analysis of the UV-VIS and FTIR spectra and the GC-MS analysis, it was observed that extract EI contains less phenyl compounds than EII. In addition to flavonoids, EII contains hop acids and chlorophyll. The solutions of hop extracts show very good antioxidant capacities; therefore, they can effectively inhibit or slow negative oxidation reactions and scavenge free radicals and reactive oxygen species (ROS).
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Affiliation(s)
- Anna Masek
- Technical University of Lodz, Institute of Polymer and Dye Technology, Faculty of Chemistry, ul Stefanowskiego 12/16, 90-924 Lodz, Poland.
| | - Ewa Chrzescijanska
- Technical University of Lodz, Institute of General and Ecological Chemistry, Faculty of Chemistry, ul Zeromskiego 116, 90-924 Lodz, Poland
| | - Anna Kosmalska
- Technical University of Lodz, Institute of Polymer and Dye Technology, Faculty of Chemistry, ul Stefanowskiego 12/16, 90-924 Lodz, Poland
| | - Marian Zaborski
- Technical University of Lodz, Institute of Polymer and Dye Technology, Faculty of Chemistry, ul Stefanowskiego 12/16, 90-924 Lodz, Poland
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179
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Bartos A, Majak I, Leszczyńska J. Uptake and assimilability of nickel in the course of systemic allergy: Implications for elimination diet. Food Res Int 2014. [DOI: 10.1016/j.foodres.2013.11.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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180
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E. Njogu RN, Kariuki DK, M. Kamau D, Wachira FN. Effects of Foliar Fertilizer Application on Quality of Tea (<I>Camellia sinensis</I>) Grown in the Kenyan Highlands. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/ajps.2014.518286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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181
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Han Q, Mihara S, Hashimoto K, Fujino T. Optimization of Tea Sample Preparation Methods for ICP-MS and Application to Verification of Chinese Tea Authenticity. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2014. [DOI: 10.3136/fstr.20.1109] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Qiang Han
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
| | - Shozo Mihara
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
| | - Kenro Hashimoto
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
| | - Tatsuya Fujino
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
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182
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Melucci D, Locatelli M, Locatelli C. Trace level voltammetric determination of heavy metals and total mercury in tea matrices (Camellia sinensis). Food Chem Toxicol 2013. [DOI: 10.1016/j.fct.2013.10.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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183
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Petit D, El Houari W, Jacobs K, Baeyens W, Leermakers M. Trace element content in tea brewed in traditional metallic and stainless steel teapots. ENVIRONMENTAL MONITORING AND ASSESSMENT 2013; 185:8957-8966. [PMID: 23712458 DOI: 10.1007/s10661-013-3226-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 04/24/2013] [Indexed: 06/02/2023]
Abstract
The migration of metals in tea brewed in metallic teapots was investigated. The teapots were obtained from North Africa stores in Brussels in 2005-2006 and in 2011. Chinese gunpowder green tea, the most commonly used tea in the Moroccan community, was used to prepare the tea. Tea brewed in metallic teapots was compared to tea brewed in a glass vessel in order to evaluate the contribution of the tea and the teapots to the metal concentrations in the brewed tea. Tea samples were also collected in Moroccan households and in tearooms in Brussels. The elements As, Cd, Pb, Sn, Mn, Fe, Cr, Co, Ni, Cr, Cu, Zn, and Al were analyzed by high-resolution sector field inductively coupled mass spectrometry. The relationship between the metal composition of the alloy of the teapot and the metal concentration in tea was also investigated. Migration of Pb and to a lesser amount Ni, Cu, and Zn was observed in brass teapots and migration of Cd from a number of stainless steel teapots was observed. The soldering connecting the sprout to the teapot was shown to be an important source of Pb to the tea. High levels of Mn and Al were also observed in the brewed tea and these elements where shown to originate from the tea itself. Metal exposure from tea drinking was calculated for different tea consumption levels and different metal concentration levels and compared to toxicological reference values.
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Affiliation(s)
- D Petit
- Department of Analytical and Environmental Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussels, Belgium
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184
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185
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A comparison of samples preparation strategies in the multi-elemental analysis of tea by spectrometric methods. Food Res Int 2013. [DOI: 10.1016/j.foodres.2013.03.030] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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186
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Lin Q, Lin H, Zhang Y, Rong M, Ke H, Tang X, Chen X. Determination of trace Pb(II), Cd(II) and Zn(II) using differential pulse stripping voltammetry without Hg modification. Sci China Chem 2013. [DOI: 10.1007/s11426-013-4922-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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187
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188
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Cabrera-Vique C, Mesías M. Content and Bioaccessibility of Aluminium in Duplicate Diets from Southern Spain. J Food Sci 2013; 78:T1307-12. [DOI: 10.1111/1750-3841.12198] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Accepted: 05/26/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Carmen Cabrera-Vique
- Dept. of Nutrition and Bromatology, School of Pharmacy; Univ. of Granada; 18012-Granada; Spain
| | - Marta Mesías
- Inst. of Food Science, Technology and Nutrition, ICTAN-CSIC; 28040; Madrid; Spain
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189
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Li WH, Zhou HP, Li N, Wang SD, Liu XJ, Jin ZJ, Bu YZ, Liu ZX. Chromium level and intake from Chinese made tea. FOOD ADDITIVES & CONTAMINANTS PART B-SURVEILLANCE 2013; 6:289-93. [PMID: 24779940 DOI: 10.1080/19393210.2013.822934] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Tea is a popular drink around the world. It is also one of the sources of metal intake. The objectives of this study were to assess chromium (Cr) intake from popular green, oolong, black and Pu-erh tea. In total, 128 Chinese made teas were analysed and concentration differences among four types of tea were explored. Black tea contained highest total Cr, which varied between 0.63 and 17.60 mg/kg. The lowest content was found in the green tea samples, between 0.26 and 1.30 mg/kg. Cr(III) and Cr(VI) in black tea were higher than in other types of tea. Cr(III), Cr(VI) and total Cr concentration in different tea infusions were also analysed. The results suggest that drinking tea is an effective way for Cr intake and the risk of adults and children being chronically intoxicated by tea infusions is low.
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Affiliation(s)
- Wei-Hao Li
- a School of Life Science and Technology , Tongji University , Shanghai , China
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190
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Dambiec M, Polechońska L, Klink A. Levels of essential and non-essential elements in black teas commercialized in Poland and their transfer to tea infusion. J Food Compost Anal 2013. [DOI: 10.1016/j.jfca.2013.03.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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191
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Xu L, Yan SM, Ye ZH, Fu XS, Yu XP. Combining electronic tongue array and chemometrics for discriminating the specific geographical origins of green tea. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2013; 2013:350801. [PMID: 23956928 PMCID: PMC3728527 DOI: 10.1155/2013/350801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 06/30/2013] [Indexed: 06/02/2023]
Abstract
The feasibility of electronic tongue and multivariate analysis was investigated for discriminating the specific geographical origins of a Chinese green tea with Protected Designation of Origin (PDO). 155 Longjing tea samples from three subareas were collected and analyzed by an electronic tongue array of 7 sensors. To remove the influence of abnormal measurements and samples, robust principal component analysis (ROBPCA) was used to detect outliers in each class. Partial least squares discriminant analysis (PLSDA) was then used to develop a classification model. The prediction sensitivity/specificity of PLSDA was 1.000/1.000, 1.000/0.967, and 0.950/1.000 for longjing from Xihu, Qiantang, and Yuezhou, respectively. Electronic tongue and chemometrics can provide a rapid and reliable tool for discriminating the specific producing areas of Longjing.
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Affiliation(s)
- Lu Xu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou 310018, China
| | - Si-Min Yan
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou 310018, China
| | - Zi-Hong Ye
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou 310018, China
| | - Xian-Shu Fu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou 310018, China
| | - Xiao-Ping Yu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou 310018, China
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192
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Balcerzak M, Janiszewska J. Fluorides in Tea Products and Analytical Problems with Their Determination. Crit Rev Anal Chem 2013. [DOI: 10.1080/10408347.2013.766077] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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193
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Chen H, Liu X, Yang D, Yin P. Degradation pattern of gibberellic acid during the whole process of tea production. Food Chem 2013; 138:976-81. [DOI: 10.1016/j.foodchem.2012.10.110] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 10/16/2012] [Accepted: 10/19/2012] [Indexed: 10/27/2022]
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194
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Falahi E, Hedaiati R. Heavy metal content of black teas consumed in Iran. FOOD ADDITIVES & CONTAMINANTS PART B-SURVEILLANCE 2013; 6:123-6. [DOI: 10.1080/19393210.2013.764550] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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195
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Pérez-Jiménez A, Peres H, Rubio VC, Oliva-Teles A. Effects of diet supplementation with white tea and methionine on lipid metabolism of gilthead sea bream juveniles (Sparus aurata). FISH PHYSIOLOGY AND BIOCHEMISTRY 2013; 39:661-670. [PMID: 23053611 DOI: 10.1007/s10695-012-9728-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 09/25/2012] [Indexed: 06/01/2023]
Abstract
A growth trial was performed with gilthead sea bream juveniles (Sparus aurata) to evaluate the effect of diet supplementation with white tea and methionine on fish performance and lipid metabolism. For that purpose, four diets were formulated: a fish meal-based diet (Control) and diets identical to the control diet but supplemented with 2.9 % white tea (Tea), 0.3 % methionine (Met) or 2.9 % white tea plus 0.3 % methionine (Tea + Met). Growth performance and feed efficiency parameters, whole-body and liver composition, plasma metabolites concentration and liver glucose 6-phosphate dehydrogenase (G6PDH), malic enzyme (ME) and fatty acid synthetase (FAS) activities were determined. Feed intake was higher in fish fed methionine-supplemented diets, whereas this parameter and growth was decreased in fish fed white tea supplementation. Feed efficiency and protein efficiency ratio were not affected by diet composition. Plasma HDL cholesterol and total lipids concentration were higher in fish fed white tea-supplemented diets. Whole-body lipid, plasma glucose, liver glycogen concentration and liver G6PDH, ME and FAS activities were lower in fish fed white tea-supplemented diets. Results of the present study indicate that methionine seems to act as a feed attractant in diets for sea bream juveniles. Additionally, white tea is an important modulator of lipid metabolism in sea bream juveniles.
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Affiliation(s)
- Amalia Pérez-Jiménez
- CIMAR/CIIMAR-Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal.
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196
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De La Calle I, Costas M, Cabaleiro N, Lavilla I, Bendicho C. Fast method for multielemental analysis of plants and discrimination according to the anatomical part by total reflection X-ray fluorescence spectrometry. Food Chem 2013; 138:234-41. [DOI: 10.1016/j.foodchem.2012.09.105] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 06/22/2012] [Accepted: 09/30/2012] [Indexed: 10/27/2022]
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197
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Validation of a LC–MS Method for the Determination of Urea Contamination in Market Teas. FOOD ANAL METHOD 2013. [DOI: 10.1007/s12161-013-9590-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Juranović Cindrić I, Zeiner M, Glamuzina E, Stingeder G. Elemental characterisation of the medical herbs Salvia officinalis L. and Teucrium montanum L. grown in Croatia. Microchem J 2013. [DOI: 10.1016/j.microc.2012.06.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Determination of volatile components of green, black, oolong and white tea by optimized ultrasound-assisted extraction-dispersive liquid–liquid microextraction coupled with gas chromatography. J Chromatogr A 2013; 1280:1-8. [DOI: 10.1016/j.chroma.2013.01.029] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 12/24/2012] [Accepted: 01/03/2013] [Indexed: 01/22/2023]
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Malik J, Frankova A, Drabek O, Szakova J, Ash C, Kokoska L. Aluminium and other elements in selected herbal tea plant species and their infusions. Food Chem 2013; 139:728-34. [PMID: 23561167 DOI: 10.1016/j.foodchem.2013.02.013] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 01/31/2013] [Accepted: 02/02/2013] [Indexed: 02/05/2023]
Abstract
The determination of Al, B, Cu, Fe, Mn, Ni, P, Zn and Ca, K, Mg by inductively coupled plasma optical emission spectrometry (ICP-OES) and flame atomic absorption spectroscopy (FAAS), respectively, in digests and infusions of Hibiscus sabdariffa (petals), Rosa canina (receptacles), Ginkgo biloba (leaves), Cymbopogon citratus (leaves), Aloe vera (leaves) and Panax ginseng (roots) was carried out in this study. Particular attention has been given to Al and heavy metals for the identification of possible raw material contaminants, their transformation into the infusion and for predicting their eventual role in the human diet during daily consumption. Additionally, Ion Chromatography (IC) speciation of Al in the leachates was carried out. In dry herbs, hibiscus and ginkgo appeared to contain the greatest contents of Al, Fe, K, Mn, Ni, Zn and B, Mg, P, respectively. A. vera contained the highest amount of Ca and highest values of Cu and P were observed in ginseng. In infusions, the topmost concentrations of Al, B, Cu, Fe, P, K, Mn, Ni, Zn were detected in those prepared from hibiscus petals, Ca from aloe leaves and Mg from leaves of ginkgo. According to a possible daily consumption exceeding 1 L, hibiscus decoction was identified as potentially dietetically significant in the content of certain elements. It seems to be possibly one of the top contributors of B from food (up to 5.5±0.2 mg/L). The Mg contained in the infusion (up to 106±5 mg/L) may be a contributor in the attenuation of blood pressure. A high amount of accessible Mn (up to 17.4±1.1 mg/L) can probably have an adverse effect in humans. The total Al allowance (up to 1.2±0.1 mg/L) suggests that no more than 1 L of the hibiscus infusion should be consumed per day by sensitive individuals including pregnant women and should be completely excluded from the diet of children under 6 months of age and children with chronic renal failure.
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Affiliation(s)
- Jan Malik
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, 129 Kamycka, 165 21 Prague 6-Suchdol, Czech Republic.
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