Essential and toxic metals in tea (Camellia sinensis) imported and produced in Ethiopia

Sixteen samples of packed tea leaves (Camellia sinensis) were purchased from supermarkets in Addis Ababa, Ethiopia for metal analysis. Elements were measured by FAAS and graphite furnace atomic absorption spectrometer (GFAAS) employing external calibration curves. The levels in mg/kg dried weight ba...

Full description

Saved in:
Bibliographic Details
Published in:Food additives & contaminants Part B, Surveillance communications Surveillance communications, 2014-01, Vol.7 (1), p.30-36
Main Author: Ashenef, Ayenew
Format: Article
Language:English
Subjects:
adverse effects
aluminum
Alzheimer disease
atomic absorption spectrometry
barium
Biological and medical sciences
cadmium
Camellia sinensis
Chemical elements
Coffee, tea and other stimulative beverage industries
Commerce
copper
Environmental Exposure
Ethiopia
Flame Atomic Absorption/Emission Spectrometer (FAAS)
Food additives
Food and Agriculture Organization
Food industries
Fundamental and applied biological sciences. Psychology
graphite furnace atomic absorption spectrometer (GFAAS)
Humans
iron
kidneys
lead
Leaves
Limit of Detection
magnesium
manganese
Metals
Metals - analysis
Metals - toxicity
Parkinson disease
sodium
Spectrophotometry, Atomic
supermarkets
Tea
tea (beverage)
Tea - chemistry
toxicity
World Health Organization
zinc
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by cdi_FETCH-LOGICAL-c478t-3cb78d2ea7af206e06a82fb574ba3c38f768ca380e93dd5a879b99cc7ff746d43
cites cdi_FETCH-LOGICAL-c478t-3cb78d2ea7af206e06a82fb574ba3c38f768ca380e93dd5a879b99cc7ff746d43
container_end_page 36
container_issue 1
container_start_page 30
container_title Food additives & contaminants Part B, Surveillance communications
container_volume 7
creator Ashenef, Ayenew
description Sixteen samples of packed tea leaves (Camellia sinensis) were purchased from supermarkets in Addis Ababa, Ethiopia for metal analysis. Elements were measured by FAAS and graphite furnace atomic absorption spectrometer (GFAAS) employing external calibration curves. The levels in mg/kg dried weight basis varied from Cu: 4.7–12.9; Cd: 0.02–2.83; Pb: 
doi_str_mv 10.1080/19393210.2013.831951
format article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1660409748</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1520342181</sourcerecordid><originalsourceid>FETCH-LOGICAL-c478t-3cb78d2ea7af206e06a82fb574ba3c38f768ca380e93dd5a879b99cc7ff746d43</originalsourceid><addsrcrecordid>eNqFkV9rFDEUxYNYbK1-A9EBEdqHrUnuzCR5KrKsWij4oMXHcCd_NGVmsiYzaL-9WWdXpS-FhNwbfudwk0PIC0YvGJX0LVOggJeOUwYXEphq2CNysrteAefq8X_1MXma8y2lLWdSPSHHvBZCKdGekK-bnN04BewrHG01xV_BVIObsM9VGKvJYXW2xsH1fcAqh9GNOeTzKgzbmCZn_4i2KdrZlKYINtP3ELcBn5EjXzzc8_15Sm7eb76sP66uP324Wr-7XplayGkFphPScocCPaetoy1K7rtG1B2CAelFKw2CpE6BtQ1KoTqljBHei7q1NZySs8W3DPFjdnnSQ8imjIuji3PWrG1pTZWo5cNowynU5YdYQV_fQ2_jnMbykEJRUGWJnWG9UCbFnJPzepvCgOlOM6p3GelDRnqXkV4yKrKXe_O5G5z9KzqEUoA3ewCzwd4nHE3I_zgJIBhA4S4XLow-pgF_xtRbPeFdH9NBBA-M8mpx8Bg1fktFcPO5AA0tWzDK4Td8dLSb</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1503903978</pqid></control><display><type>article</type><title>Essential and toxic metals in tea (Camellia sinensis) imported and produced in Ethiopia</title><source>Taylor and Francis Science and Technology Collection</source><creator>Ashenef, Ayenew</creator><creatorcontrib>Ashenef, Ayenew</creatorcontrib><description>Sixteen samples of packed tea leaves (Camellia sinensis) were purchased from supermarkets in Addis Ababa, Ethiopia for metal analysis. Elements were measured by FAAS and graphite furnace atomic absorption spectrometer (GFAAS) employing external calibration curves. The levels in mg/kg dried weight basis varied from Cu: 4.7–12.9; Cd: 0.02–2.83; Pb: &lt;0.01–2.29; Zn: 8.6–198.3; Mn: 81.7–962.2; Al: 3376.4–10,369.3; K: 7667.7–10,775; Li: 0.2–0.62; Ba: 9.4–1407.1; Mg: 1145.6–1834.1; Fe: 286.4–880.9; Ca: 1414.2–2646.0; Na: 147.1–557.7. Levels of exposure to the investigated metals by drinking tea were checked with the recommended daily allowance (RDA) of the WHO/FAO. Considering the average daily consumption rate of tea alone, the possible daily intakes of Al, Ba and Mn surpass the amenability to the side effects associated with these elements like Alzheimer’s disease, kidney damage and Parkinson’s disease, respectively, for which drinking tea should cause awareness. The other investigated elements are in the acceptable range.</description><identifier>ISSN: 1939-3229</identifier><identifier>ISSN: 1939-3210</identifier><identifier>EISSN: 1939-3229</identifier><identifier>DOI: 10.1080/19393210.2013.831951</identifier><identifier>PMID: 24779976</identifier><language>eng</language><publisher>Abingdon: Taylor &amp; Francis</publisher><subject>adverse effects ; aluminum ; Alzheimer disease ; atomic absorption spectrometry ; barium ; Biological and medical sciences ; cadmium ; Camellia sinensis ; Chemical elements ; Coffee, tea and other stimulative beverage industries ; Commerce ; copper ; Environmental Exposure ; Ethiopia ; Flame Atomic Absorption/Emission Spectrometer (FAAS) ; Food additives ; Food and Agriculture Organization ; Food industries ; Fundamental and applied biological sciences. Psychology ; graphite furnace atomic absorption spectrometer (GFAAS) ; Humans ; iron ; kidneys ; lead ; Leaves ; Limit of Detection ; magnesium ; manganese ; Metals ; Metals - analysis ; Metals - toxicity ; Parkinson disease ; sodium ; Spectrophotometry, Atomic ; supermarkets ; Tea ; tea (beverage) ; Tea - chemistry ; toxicity ; World Health Organization ; zinc</subject><ispartof>Food additives &amp; contaminants Part B, Surveillance communications, 2014-01, Vol.7 (1), p.30-36</ispartof><rights>2013 Taylor &amp; Francis 2013</rights><rights>2015 INIST-CNRS</rights><rights>Copyright Taylor &amp; Francis Ltd. 2014</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c478t-3cb78d2ea7af206e06a82fb574ba3c38f768ca380e93dd5a879b99cc7ff746d43</citedby><cites>FETCH-LOGICAL-c478t-3cb78d2ea7af206e06a82fb574ba3c38f768ca380e93dd5a879b99cc7ff746d43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,786,790,27957,27958</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=28337133$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24779976$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ashenef, Ayenew</creatorcontrib><title>Essential and toxic metals in tea (Camellia sinensis) imported and produced in Ethiopia</title><title>Food additives &amp; contaminants Part B, Surveillance communications</title><addtitle>Food Addit Contam Part B Surveill</addtitle><description>Sixteen samples of packed tea leaves (Camellia sinensis) were purchased from supermarkets in Addis Ababa, Ethiopia for metal analysis. Elements were measured by FAAS and graphite furnace atomic absorption spectrometer (GFAAS) employing external calibration curves. The levels in mg/kg dried weight basis varied from Cu: 4.7–12.9; Cd: 0.02–2.83; Pb: &lt;0.01–2.29; Zn: 8.6–198.3; Mn: 81.7–962.2; Al: 3376.4–10,369.3; K: 7667.7–10,775; Li: 0.2–0.62; Ba: 9.4–1407.1; Mg: 1145.6–1834.1; Fe: 286.4–880.9; Ca: 1414.2–2646.0; Na: 147.1–557.7. Levels of exposure to the investigated metals by drinking tea were checked with the recommended daily allowance (RDA) of the WHO/FAO. Considering the average daily consumption rate of tea alone, the possible daily intakes of Al, Ba and Mn surpass the amenability to the side effects associated with these elements like Alzheimer’s disease, kidney damage and Parkinson’s disease, respectively, for which drinking tea should cause awareness. The other investigated elements are in the acceptable range.</description><subject>adverse effects</subject><subject>aluminum</subject><subject>Alzheimer disease</subject><subject>atomic absorption spectrometry</subject><subject>barium</subject><subject>Biological and medical sciences</subject><subject>cadmium</subject><subject>Camellia sinensis</subject><subject>Chemical elements</subject><subject>Coffee, tea and other stimulative beverage industries</subject><subject>Commerce</subject><subject>copper</subject><subject>Environmental Exposure</subject><subject>Ethiopia</subject><subject>Flame Atomic Absorption/Emission Spectrometer (FAAS)</subject><subject>Food additives</subject><subject>Food and Agriculture Organization</subject><subject>Food industries</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>graphite furnace atomic absorption spectrometer (GFAAS)</subject><subject>Humans</subject><subject>iron</subject><subject>kidneys</subject><subject>lead</subject><subject>Leaves</subject><subject>Limit of Detection</subject><subject>magnesium</subject><subject>manganese</subject><subject>Metals</subject><subject>Metals - analysis</subject><subject>Metals - toxicity</subject><subject>Parkinson disease</subject><subject>sodium</subject><subject>Spectrophotometry, Atomic</subject><subject>supermarkets</subject><subject>Tea</subject><subject>tea (beverage)</subject><subject>Tea - chemistry</subject><subject>toxicity</subject><subject>World Health Organization</subject><subject>zinc</subject><issn>1939-3229</issn><issn>1939-3210</issn><issn>1939-3229</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkV9rFDEUxYNYbK1-A9EBEdqHrUnuzCR5KrKsWij4oMXHcCd_NGVmsiYzaL-9WWdXpS-FhNwbfudwk0PIC0YvGJX0LVOggJeOUwYXEphq2CNysrteAefq8X_1MXma8y2lLWdSPSHHvBZCKdGekK-bnN04BewrHG01xV_BVIObsM9VGKvJYXW2xsH1fcAqh9GNOeTzKgzbmCZn_4i2KdrZlKYINtP3ELcBn5EjXzzc8_15Sm7eb76sP66uP324Wr-7XplayGkFphPScocCPaetoy1K7rtG1B2CAelFKw2CpE6BtQ1KoTqljBHei7q1NZySs8W3DPFjdnnSQ8imjIuji3PWrG1pTZWo5cNowynU5YdYQV_fQ2_jnMbykEJRUGWJnWG9UCbFnJPzepvCgOlOM6p3GelDRnqXkV4yKrKXe_O5G5z9KzqEUoA3ewCzwd4nHE3I_zgJIBhA4S4XLow-pgF_xtRbPeFdH9NBBA-M8mpx8Bg1fktFcPO5AA0tWzDK4Td8dLSb</recordid><startdate>20140102</startdate><enddate>20140102</enddate><creator>Ashenef, Ayenew</creator><general>Taylor &amp; Francis</general><general>Taylor &amp; Francis Ltd</general><scope>FBQ</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7U7</scope><scope>C1K</scope></search><sort><creationdate>20140102</creationdate><title>Essential and toxic metals in tea (Camellia sinensis) imported and produced in Ethiopia</title><author>Ashenef, Ayenew</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c478t-3cb78d2ea7af206e06a82fb574ba3c38f768ca380e93dd5a879b99cc7ff746d43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>adverse effects</topic><topic>aluminum</topic><topic>Alzheimer disease</topic><topic>atomic absorption spectrometry</topic><topic>barium</topic><topic>Biological and medical sciences</topic><topic>cadmium</topic><topic>Camellia sinensis</topic><topic>Chemical elements</topic><topic>Coffee, tea and other stimulative beverage industries</topic><topic>Commerce</topic><topic>copper</topic><topic>Environmental Exposure</topic><topic>Ethiopia</topic><topic>Flame Atomic Absorption/Emission Spectrometer (FAAS)</topic><topic>Food additives</topic><topic>Food and Agriculture Organization</topic><topic>Food industries</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>graphite furnace atomic absorption spectrometer (GFAAS)</topic><topic>Humans</topic><topic>iron</topic><topic>kidneys</topic><topic>lead</topic><topic>Leaves</topic><topic>Limit of Detection</topic><topic>magnesium</topic><topic>manganese</topic><topic>Metals</topic><topic>Metals - analysis</topic><topic>Metals - toxicity</topic><topic>Parkinson disease</topic><topic>sodium</topic><topic>Spectrophotometry, Atomic</topic><topic>supermarkets</topic><topic>Tea</topic><topic>tea (beverage)</topic><topic>Tea - chemistry</topic><topic>toxicity</topic><topic>World Health Organization</topic><topic>zinc</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ashenef, Ayenew</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Toxicology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Food additives &amp; contaminants Part B, Surveillance communications</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ashenef, Ayenew</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Essential and toxic metals in tea (Camellia sinensis) imported and produced in Ethiopia</atitle><jtitle>Food additives &amp; contaminants Part B, Surveillance communications</jtitle><addtitle>Food Addit Contam Part B Surveill</addtitle><date>2014-01-02</date><risdate>2014</risdate><volume>7</volume><issue>1</issue><spage>30</spage><epage>36</epage><pages>30-36</pages><issn>1939-3229</issn><issn>1939-3210</issn><eissn>1939-3229</eissn><notes>http://dx.doi.org/10.1080/19393210.2013.831951</notes><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>Sixteen samples of packed tea leaves (Camellia sinensis) were purchased from supermarkets in Addis Ababa, Ethiopia for metal analysis. Elements were measured by FAAS and graphite furnace atomic absorption spectrometer (GFAAS) employing external calibration curves. The levels in mg/kg dried weight basis varied from Cu: 4.7–12.9; Cd: 0.02–2.83; Pb: &lt;0.01–2.29; Zn: 8.6–198.3; Mn: 81.7–962.2; Al: 3376.4–10,369.3; K: 7667.7–10,775; Li: 0.2–0.62; Ba: 9.4–1407.1; Mg: 1145.6–1834.1; Fe: 286.4–880.9; Ca: 1414.2–2646.0; Na: 147.1–557.7. Levels of exposure to the investigated metals by drinking tea were checked with the recommended daily allowance (RDA) of the WHO/FAO. Considering the average daily consumption rate of tea alone, the possible daily intakes of Al, Ba and Mn surpass the amenability to the side effects associated with these elements like Alzheimer’s disease, kidney damage and Parkinson’s disease, respectively, for which drinking tea should cause awareness. The other investigated elements are in the acceptable range.</abstract><cop>Abingdon</cop><pub>Taylor &amp; Francis</pub><pmid>24779976</pmid><doi>10.1080/19393210.2013.831951</doi><tpages>7</tpages></addata></record>
fulltext fulltext
identifier ISSN: 1939-3229
ispartof Food additives & contaminants Part B, Surveillance communications, 2014-01, Vol.7 (1), p.30-36
issn 1939-3229
1939-3210
1939-3229
language eng
recordid cdi_proquest_miscellaneous_1660409748
source Taylor and Francis Science and Technology Collection
subjects adverse effects
aluminum
Alzheimer disease
atomic absorption spectrometry
barium
Biological and medical sciences
cadmium
Camellia sinensis
Chemical elements
Coffee, tea and other stimulative beverage industries
Commerce
copper
Environmental Exposure
Ethiopia
Flame Atomic Absorption/Emission Spectrometer (FAAS)
Food additives
Food and Agriculture Organization
Food industries
Fundamental and applied biological sciences. Psychology
graphite furnace atomic absorption spectrometer (GFAAS)
Humans
iron
kidneys
lead
Leaves
Limit of Detection
magnesium
manganese
Metals
Metals - analysis
Metals - toxicity
Parkinson disease
sodium
Spectrophotometry, Atomic
supermarkets
Tea
tea (beverage)
Tea - chemistry
toxicity
World Health Organization
zinc
title Essential and toxic metals in tea (Camellia sinensis) imported and produced in Ethiopia
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-09-21T18%3A05%3A51IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Essential%20and%20toxic%20metals%20in%20tea%20(Camellia%20sinensis)%20imported%20and%20produced%20in%20Ethiopia&rft.jtitle=Food%20additives%20&%20contaminants%20Part%20B,%20Surveillance%20communications&rft.au=Ashenef,%20Ayenew&rft.date=2014-01-02&rft.volume=7&rft.issue=1&rft.spage=30&rft.epage=36&rft.pages=30-36&rft.issn=1939-3229&rft.eissn=1939-3229&rft_id=info:doi/10.1080/19393210.2013.831951&rft_dat=%3Cproquest_cross%3E1520342181%3C/proquest_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c478t-3cb78d2ea7af206e06a82fb574ba3c38f768ca380e93dd5a879b99cc7ff746d43%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=1503903978&rft_id=info:pmid/24779976&rfr_iscdi=true