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A new safety channel based on (1)(7)N detection in research reactors 2015 Reactor Research School, Nuclear Science and Technology Research Institute (NSTRI), P.O. Box 143995-1113, Tehran, Iran.; Department of Energy and Physics, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran. Electronic address: mgharib2@
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Print(0)
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Journal Article
Periodical, Full
Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for use in Agriculture, Industry and Medicine
Periodical, Abbrev.
Appl.Radiat.Isot.
Pub Date Free Form
Oct
Volume
104
Issue
Start Page
1
Other Pages
4
Notes
CI: Copyright (c) 2015; JID: 9306253; OTO: NOTNLM; 2014/10/11 [received]; 2015/05/20 [revised]; 2015/06/04 [accepted]; 2015/06/19 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1872-9800; 0969-8043
Accession Number
PMID: 26123105
Language
eng
SubFile
Journal Article
DOI
10.1016/j.apradiso.2015.06.005 [doi]
Output Language
Unknown(0)
PMID
26123105
Abstract
Tehran research reactor (TRR) is a representative of pool type research reactors using light water, as coolant and moderator. This reactor is chosen as a prototype to demonstrate and prove the feasibility of (17)N detection as a new redundant channel for reactor power measurement. In TRR, similar to other pool type reactors, neutron detectors are immersed in the pool around the core as the main power measuring devices. In the present article, a different approach, using out of water neutron detector, is employed to measure reactor power. This new method is based on (17)O (n,p) (17)N reaction taking place inside the core and subsequent measurement of delayed neutrons emitted due to (17)N disintegration. Count and measurement of neutrons around outlet water pipe provides a reliable redundant safety channel to measure reactor power. Results compared with other established channels indicate a good agreement and shows a linear interdependency with true thermal power. Safety of reactor operation is improved with installation & use of this new power measuring channel. The new approach may equally serve well as a redundant channel in all other types of reactors having coolant comprised of oxygen in its molecular constituents. Contrary to existing channels, this one is totally out of water and thus is an advantage over current instrumentations. It is proposed to employ the same idea on other reactors (nuclear power plants too) to improve safety criteria.
Descriptors
Links
Book Title
Database
Publisher
Elsevier Ltd
Data Source
Authors
Seyfi,S., Gharib,M.
Original/Translated Title
URL
Date of Electronic
20150619
PMCID
Editors
Waterpipe use among high school students in Ontario: Demographic and substance use correlates 2015 Centre for Addiction and Mental Health. hayley.hamilton@camh.ca.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Canadian journal of public health = Revue canadienne de sante publique
Periodical, Abbrev.
Can.J.Public Health
Pub Date Free Form
12-Mar
Volume
106
Issue
3
Start Page
e121
Other Pages
6
Notes
JID: 0372714; OTO: NOTNLM; 2014/08/29 [received]; 2015/01/24 [accepted]; 2015/03/13 [revised]; epublish
Place of Publication
Canada
ISSN/ISBN
1920-7476; 0008-4263
Accession Number
PMID: 26125237
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.17269/cjph.106.4764 [doi]
Output Language
Unknown(0)
PMID
26125237
Abstract
OBJECTIVE: To examine waterpipe use and its association with demographic factors, tobacco cigarette smoking, ever use of electronic cigarettes (e-cigarettes) and alcohol use among high school students. METHODS: Data were derived from the 2013 Ontario Student Drug Use and Health Survey, a school-based survey of 7th to 12th grade students. This province-wide survey was based on a stratified two-stage cluster design. Analyses were based on a subsample of 2,873 high school students and included adjustments for the complex sample design. RESULTS: Overall, 12.5% of high school students (grades 9-12) had used a waterpipe in the previous year. Awareness of waterpipes was high - 68.4% of students reported that they were aware of waterpipes but had not used one in the past year; 19.1% had never heard of waterpipes or hookah. The percentage of high school students reporting waterpipe use in the past year was similar to reports of tobacco cigarette use (12.5% and 11% respectively). Waterpipe use was highly associated with past-year tobacco cigarette and regular alcohol use as well as ever use of e-cigarettes. In multivariate analyses, males and females had similar odds of waterpipe use, and non-White students and those in higher grades had greater odds of use after controlling for other substance use. CONCLUSION: These findings suggest that waterpipe use among high school students should be of some concern and suggest the need for policy measures to address potential risks associated with use.
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Data Source
Authors
Hamilton,H.A., Ferrence,R., Boak,A., O'Connor,S., Mann,R.E., Schwartz,R., Adlaf,E.M.
Original/Translated Title
URL
Date of Electronic
20150312
PMCID
Editors
Electronic cigarette use and its association with smoking in Hong Kong Chinese adolescents 2015 School of Nursing, University of Hong Kong, Hong Kong, China.; School of Public Health, University of Hong Kong, Hong Kong, China. Electronic address: syho@hku.hk.; School of Public Health, University of Hong Kong, Hong Kong, China.; School of Public Heal
Source Type
Print(0)
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Journal Article
Periodical, Full
Addictive Behaviors
Periodical, Abbrev.
Addict.Behav.
Pub Date Free Form
Nov
Volume
50
Issue
Start Page
124
Other Pages
127
Notes
CI: Copyright (c) 2015; JID: 7603486; OTO: NOTNLM; 2015/02/09 [received]; 2015/04/09 [revised]; 2015/06/16 [accepted]; 2015/06/24 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1873-6327; 0306-4603
Accession Number
PMID: 26132536
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.addbeh.2015.06.037 [doi]
Output Language
Unknown(0)
PMID
26132536
Abstract
BACKGROUND: Electronic cigarettes (e-cigarettes) are increasingly used in adolescents with unknown impacts on conventional cigarette smoking. We examined the associations of e-cigarette use with smoking intention, nicotine addiction and smoking cessation in Chinese adolescents. METHODS: A total of 45,128 students (age 14.6 +/- 1.9; boys 51.4%) from 75 randomly selected schools in Hong Kong reported e-cigarette use (in the past 30 days), conventional cigarette use and socio-demographic characteristics in an anonymous questionnaire survey. Adjusted odds ratios (AORs) of intention to smoke, morning smoking urge, intention to quit and quit attempts; and beta-coefficient (beta) of cigarette consumption per day were calculated in relation to e-cigarette use. RESULTS: E-cigarette use was associated with intention to smoke with an AOR (95% CI) of 1.74 (1.30-2.31) in all students, 2.18 (1.12-4.23) in never and 2.79 (2.05-3.79) in ever smokers (non-significant interaction by smoking status). The associations were also significant in experimental and former smokers but not in current smokers. In current smokers, e-cigarette use was significantly associated with heavier smoking (beta 2.54, 95% CI 1.28-3.81) and morning smoking urge (AOR 2.54, 95% CI 1.50-3.11), and non-significantly associated with lower quit intention (0.76, 0.52-1.09) and attempts (0.80, 0.56-1.23). CONCLUSIONS: E-cigarette use was associated with smoking intention in never, experimental and former smokers in Hong Kong Chinese adolescents. In current smokers, e-cigarette use was associated with nicotine addiction but not quit intention and attempts. Prospective studies with detailed measurements on e-cigarette use are warranted for further studies.
Descriptors
Links
Book Title
Database
Publisher
Elsevier Ltd
Data Source
Authors
Wang,M.P., Ho,S.Y., Leung,L.T., Lam,T.H.
Original/Translated Title
URL
Date of Electronic
20150624
PMCID
Editors
Source Tracking and Succession of Kimchi Lactic Acid Bacteria during Fermentation 2015 Dept. of Life Science, Chung-Ang Univ, Seoul, 156-756, Republic of Korea.; Dept. of Life Science, Chung-Ang Univ, Seoul, 156-756, Republic of Korea.; Dept. of Life Science, Chung-Ang Univ, Seoul, 156-756, Republic of Korea.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of Food Science
Periodical, Abbrev.
J.Food Sci.
Pub Date Free Form
Aug
Volume
80
Issue
8
Start Page
M1871
Other Pages
7
Notes
CI: (c) 2015; JID: 0014052; 33X04XA5AT (Lactic Acid); OTO: NOTNLM; 2015/05/28 [accepted]; 2015/04/03 [received]; 2015/06/30 [aheadofprint]; ppublish
Place of Publication
United States
ISSN/ISBN
1750-3841; 0022-1147
Accession Number
PMID: 26133985
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1111/1750-3841.12948 [doi]
Output Language
Unknown(0)
PMID
26133985
Abstract
This study aimed at evaluating raw materials as potential lactic acid bacteria (LAB) sources for kimchi fermentation and investigating LAB successions during fermentation. The bacterial abundances and communities of five different sets of raw materials were investigated using plate-counting and pyrosequencing. LAB were found to be highly abundant in all garlic samples, suggesting that garlic may be a major LAB source for kimchi fermentation. LAB were observed in three and two out of five ginger and leek samples, respectively, indicating that they can also be potential important LAB sources. LAB were identified in only one cabbage sample with low abundance, suggesting that cabbage may not be an important LAB source. Bacterial successions during fermentation in the five kimchi samples were investigated by community analysis using pyrosequencing. LAB communities in initial kimchi were similar to the combined LAB communities of individual raw materials, suggesting that kimchi LAB were derived from their raw materials. LAB community analyses showed that species in the genera Leuconostoc, Lactobacillus, and Weissella were key players in kimchi fermentation, but their successions during fermentation varied with the species, indicating that members of the key genera may have different acid tolerance or growth competitiveness depending on their respective species.
Descriptors
Links
Book Title
Database
Publisher
Institute of Food Technologists(R)
Data Source
Authors
Lee,S.H., Jung,J.Y., Jeon,C.O.
Original/Translated Title
URL
Date of Electronic
20150630
PMCID
Editors
Deficiencies in public understanding about tobacco harm reduction: results from a United States national survey 2015 Department of Community Health and Health Behavior, University at Buffalo, State University of New York, School of Public Health and Health Professions, 3425 Main Street, Buffalo, NY, 14214, USA. mtk8@buffalo.edu.; Department of Community Health and Healt
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Harm reduction journal
Periodical, Abbrev.
Harm Reduct J.
Pub Date Free Form
2-Jul
Volume
12
Issue
Start Page
21
Other Pages
015-0055-0
Notes
LR: 20150707; JID: 101153624; OID: NLM: PMC4487951; 2015/03/13 [received]; 2015/06/25 [accepted]; 2015/07/02 [aheadofprint]; epublish
Place of Publication
England
ISSN/ISBN
1477-7517; 1477-7517
Accession Number
PMID: 26135116
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; IM
DOI
10.1186/s12954-015-0055-0 [doi]
Output Language
Unknown(0)
PMID
26135116
Abstract
BACKGROUND: Tobacco products differ in their relative health harms. The need for educating consumers about such harms is growing as different tobacco products enter the marketplace and as the FDA moves to regulate and educate the public about different products. However, little is known about the patterns of the public's knowledge of relative harms. METHODS: Data were analyzed from the Health Information National Trends Survey (HINTS) 4 Cycle 2, a population-representative survey of US adults conducted between October 2012 and January 2013 (N = 3630). Participants reported their perceptions of the relative risks of e-cigarettes, smokeless tobacco, and different types of cigarettes compared to "traditional" cigarettes. Relative risk perceptions for each product type, as well as the consistency and accuracy of harm reduction beliefs, were analyzed. RESULTS: About 65% of the respondents accurately reported that no cigarettes were less harmful than any others. Slightly more than half of U.S. adults perceived e-cigarettes to be safer than regular cigarettes, a belief in line with current scientific evidence. By contrast, only 9% of respondents perceived some smokeless tobacco products to be safer, a belief strongly supported by the evidence. Only 3.5% of respondents had patterns of relative risk perceptions in line with current scientific evidence for all three modalities. CONCLUSIONS: The discrepancy between current evidence and public perceptions of relative risk of various tobacco/nicotine products was marked; for most tobacco types, a large proportion of the population held inaccurate harm reduction beliefs. Although there was substantial awareness that no cigarettes were safer than any other cigarettes, there could be benefits from increasing the percentage of the public that appreciates this fact, especially among current smokers. Given the potential benefits of tobacco risk reduction strategies, public health education efforts to increase understanding of basic harm reduction principles are needed to address these misperceptions.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Kiviniemi,M.T., Kozlowski,L.T.
Original/Translated Title
URL
Date of Electronic
20150702
PMCID
PMC4487951
Editors
Monitoring Exposure to Ebola and Health of U.S. Military Personnel Deployed in Support of Ebola Control Efforts - Liberia, October 25, 2014-February 27, 2015 2015
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
MMWR.Morbidity and mortality weekly report
Periodical, Abbrev.
MMWR Morb.Mortal.Wkly.Rep.
Pub Date Free Form
3-Jul
Volume
64
Issue
25
Start Page
690
Other Pages
694
Notes
JID: 7802429; ppublish
Place of Publication
United States
ISSN/ISBN
1545-861X; 0149-2195
Accession Number
PMID: 26135589
Language
eng
SubFile
Journal Article; IM
DOI
mm6425a2 [pii]
Output Language
Unknown(0)
PMID
26135589
Abstract
In response to the unprecedented Ebola virus disease (Ebola) outbreak in West Africa, the U.S. government deployed approximately 2,500 military personnel to support the government of Liberia. Their primary missions were to construct Ebola treatment units (ETUs), train health care workers to staff ETUs, and provide laboratory testing capacity for Ebola. Service members were explicitly prohibited from engaging in activities that could result in close contact with an Ebola-infected patient or coming in contact with the remains of persons who had died from unknown causes. Military units performed twice-daily monitoring of temperature and review of exposures and symptoms ("unit monitoring") on all persons throughout deployment, exit screening at the time of departure from Liberia, and post-deployment monitoring for 21 days at segregated, controlled monitoring areas on U.S. military installations. A total of 32 persons developed a fever during deployment from October 25, 2014, through February 27, 2015; none had a known Ebola exposure or developed Ebola infection. Monitoring of all deployed service members revealed no Ebola exposures or infections. Given their activity restrictions and comprehensive monitoring while deployed to Liberia, U.S. military personnel constitute a unique population with a lower risk for Ebola exposure compared with those working in the country without such measures.
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Book Title
Database
Publisher
Data Source
Authors
Cardile,A.P., Murray,C.K., Littell,C.T., Shah,N.J., Fandre,M.N., Drinkwater,D.C., Markelz,B.P., Vento,T.J.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
Polytobacco Use of Cigarettes, Cigars, Chewing Tobacco, and Snuff Among US Adults 2016 Institute for Health & Aging, School of Nursing, University of California, San Francisco, CA; hai-yen.sung@ucsf.edu.; Institute for Health & Aging, School of Nursing, University of California, San Francisco, CA;; Institute for Health & Aging, School of Nu
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco
Periodical, Abbrev.
Nicotine Tob.Res.
Pub Date Free Form
May
Volume
18
Issue
5
Start Page
817
Other Pages
826
Notes
LR: 20160410; CI: (c) The Author 2015; GR: 1P50CA180890/CA/NCI NIH HHS/United States; GR: P50 CA180890/CA/NCI NIH HHS/United States; JID: 9815751; 2015/03/03 [received]; 2015/06/26 [accepted]; 2015/06/30 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1469-994X; 1462-2203
Accession Number
PMID: 26136525
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, P.H.S.; IM
DOI
10.1093/ntr/ntv147 [doi]
Output Language
Unknown(0)
PMID
26136525
Abstract
INTRODUCTION: Tobacco use prevalence has been commonly estimated on a product by product basis and the extent of polytobacco use among current users of each tobacco product is not well understood. This study aimed to examine the prevalence, trends, and correlates of polytobacco use among current users of cigarettes, cigars, chewing tobacco, and snuff in US adults aged >/=18. METHODS: We used pooled data from the 1998, 2000, 2005, and 2010 Cancer Control Supplements of the National Health Interview Survey (N = 123 399 adults). Multivariate logistic regression models were estimated to determine significant factors associated with polytobacco use. RESULTS: In 2010, the prevalence of polytobacco use was 8.6% among current cigarette smokers, 50.3% among current cigar users, 54.8% among current chewing tobacco users, and 42.5% among current snuff users. After controlling for other covariates, gender and race/ethnicity did not show consistent associations with poly-use across these four groups of current tobacco users; however, a positive association of young adulthood, less than high school education, and binge drinking with poly-use was consistently found among all these groups. CONCLUSIONS: Polytobacco use is extremely popular among current users of non-cigarette tobacco products. Polytobacco use patterns differ across sociodemographic subpopulations, and the gender and racial/ethnic profiles in poly-users vary across different groups of current tobacco users. Tobacco control strategies need to consider the interrelationships in the use of different tobacco products and the diverse profiles of poly-users in order to develop tailored tobacco prevention and intervention policies to further reduce the burden of tobacco use.
Descriptors
Links
Book Title
Database
Publisher
. Published by Oxford University Press on behalf of the Society for Research on Nicotine and Tobacco
Data Source
Authors
Sung,H.Y., Wang,Y., Yao,T., Lightwood,J., Max,W.
Original/Translated Title
URL
Date of Electronic
20150630
PMCID
Editors
Waterpipe Tobacco Smoking in Three Israeli Adult Populations 2015
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
The Israel Medical Association journal : IMAJ
Periodical, Abbrev.
Isr.Med.Assoc.J.
Pub Date Free Form
May
Volume
17
Issue
5
Start Page
282
Other Pages
287
Notes
JID: 100930740; ppublish
Place of Publication
Israel
ISSN/ISBN
1565-1088
Accession Number
PMID: 26137653
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
Output Language
Unknown(0)
PMID
26137653
Abstract
BACKGROUND: Waterpipe tobacco smoking (WTS) is common in some populations and may add increased risk for tobacco-related diseases. OBJECTIVES: To assess the rates of WTS and risk practices associated with WTS in three distinct populations in Israel: long-term Jewish residents (LTJR), immigrants from the former Soviet Union (fSU), and Arabs. METHODS: We conducted a cross-sectional survey of 899 randomly selected participants, age 30-65 years, using face-to-face interviews with subjects from the three population groups in Israel. Respondents reported WTS, cigarette smoking, alcohol consumption, and socioeconomic characteristics. RESULTS: Among men, WTS at least once a week was reported by 4.8% of LTJR, 3.2% of fSU immigrants and 20.3% of Arabs. Lower rates were reported among women of all groups. The younger, less educated men and the younger unmarried women had higher odds of WTS. LTJR who smoked cigarettes and drank alcohol had higher odds of WTS [odds ratio (OR) 32.6, confidence interval (CI) 9.36-113.6; OR = 3.57, CI = 1.48-8.63, respectively], compared to non-smokers and non-drinkers. fSU immigrants who smoked cigarettes had higher odds of WTS (OR = 3.40, CI = 0.99-11.7) compared to non-smokers. Among Arabs, cigarette smoking and alcohol consumption were not associated with WTS. CONCLUSIONS: Arabs are more likely than other Israeli populations to engage in WTS. This behavior may add to increased inequalities in rates of tobacco-induced diseases between Arabs and Jews in Israel. Including WTS in the policies for smoke-free public places is called for.
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Database
Publisher
Data Source
Authors
Baron-Epel,O., Shalata,W., Hovell,M.F.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
A solid-phase microextraction platinized stainless steel fiber coated with a multiwalled carbon nanotube-polyaniline nanocomposite film for the extraction of thymol and carvacrol in medicinal plants and honey 2015 Department of Chemistry, Lorestan University, Khoramabad, Iran. Electronic address: a_ghiasvand@yahoo.com.; Department of Chemistry, Lorestan University, Khoramabad, Iran.; Department of Chemistry, Lorestan University, Khoramabad, Iran.; Department of Che
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of chromatography.A
Periodical, Abbrev.
J.Chromatogr.A
Pub Date Free Form
7-Aug
Volume
1406
Issue
Start Page
87
Other Pages
93
Notes
CI: Copyright (c) 2015; JID: 9318488; 0 (Aniline Compounds); 0 (Monoterpenes); 0 (Nanotubes, Carbon); 0 (Water Pollutants, Chemical); 0 (polyaniline); 12597-68-1 (Stainless Steel); 3J50XA376E (Thymol); 9B1J4V995Q (carvacrol); OTO: NOTNLM; 2015/04/09 [rece
Place of Publication
Netherlands
ISSN/ISBN
1873-3778; 0021-9673
Accession Number
PMID: 26138604
Language
eng
SubFile
Journal Article; IM
DOI
10.1016/j.chroma.2015.06.052 [doi]
Output Language
Unknown(0)
PMID
26138604
Abstract
A mechanically hard and cohesive porous fiber, with large surface area, for more strong attachment of the coating was provided by platinizing a stainless steel wire. Then, the platinized stainless steel fiber was coated with a multiwalled carbon nanotube/polyaniline (MWCNT/PANI) nanocomposite using electrophoretic deposition (EPD) method and applied for the extraction of thymol and carvacrol with direct-immersion solid-phase microextraction (DI-SPME) method followed by high-performance liquid chromatography-ultraviolet detection (HPLC-UV) quantification. To provide a larger coarse surface for the tightened attachment of coating on the fiber, a stainless steel wire was platinized using a suitable optimized EPD method. Different experimental parameters were studied and the optimal conditions were obtained as: pH of the sample solution: 2; extraction time: 60min; salt content in the sample solution: 1% w/v NaNO3; desorption time: 60min; type and volume of the desorption solvent: acetonitrile, 100muL. Under the optimized conditions, limits of detection (LODs) were 0.6 and 0.8mugmL(-1) for thymol and carvacrol, respectively. Linear dynamic range (LDR) for the calibration curves of both analytes were 1-80mugmL(-1). Relative standard deviation (RSD%, n=6) was 6.8 for thymol and 12.7 for carvacrol. The proposed fiber was successfully applied for the recovery and determination of thymol and carvacrol in thyme, savory, and honey samples.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Ghiasvand,A., Dowlatshah,S., Nouraei,N., Heidari,N., Yazdankhah,F.
Original/Translated Title
URL
Date of Electronic
20150625
PMCID
Editors
Toward the stereochemical identification of prohibited characterizing flavors in tobacco products: the case of strawberry flavor 2015 Department of Chemical and Product Safety, German Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany, Meike.Paschke@bfr.bund.de.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Archives of Toxicology
Periodical, Abbrev.
Arch.Toxicol.
Pub Date Free Form
Aug
Volume
89
Issue
8
Start Page
1241
Other Pages
1255
Notes
JID: 0417615; 0 (Flavoring Agents); 0 (Volatile Organic Compounds); 2015/05/04 [received]; 2015/06/18 [accepted]; 2015/07/03 [aheadofprint]; ppublish
Place of Publication
Germany
ISSN/ISBN
1432-0738; 0340-5761
Accession Number
PMID: 26138682
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1007/s00204-015-1558-x [doi]
Output Language
Unknown(0)
PMID
26138682
Abstract
With the revision of the European Tobacco Products Directive (2014/40/EU), characterizing flavors such as strawberry, candy, vanillin or chocolate will be prohibited in cigarettes and fine-cut tobacco. Product surveillance will therefore require analytical means to define and subsequently detect selected characterizing flavors that are formed by supplemented flavors within the complex matrix tobacco. We have analyzed strawberry-flavored tobacco products as an example for characterizing fruit-like aroma. Using this approach, we looked into aroma components to find indicative patterns or features that can be used to satisfy obligatory product information as requested by the European Directive. Accordingly, a headspace solid-phase microextraction (HS-SPME) technique was developed and coupled to subsequent gas chromatography-mass spectrometry (GC/MS) to characterize different strawberry-flavored tobacco products (cigarettes, fine-cut tobacco, liquids for electronic cigarettes, snus, shisha tobacco) for their volatile additives. The results were compared with non-flavored, blend characteristic flavored and other fruity-flavored cigarettes, as well as fresh and dried strawberries. Besides different esters and aldehydes, the terpenes linalool, alpha-terpineol, nerolidol and limonene as well as the lactones gamma-decalactone, gamma-dodecalactone and gamma-undecalactone could be verified as compounds sufficient to convey some sort of strawberry flavor to tobacco. Selected flavors, i.e., limonene, linalool, alpha-terpineol, citronellol, carvone and gamma-decalactone, were analyzed further with respect to their stereoisomeric composition by using enantioselective HS-SPME-GC/MS. These experiments confirmed that individual enantiomers that differ in taste or physiological properties can be distinguished within the tobacco matrix. By comparing the enantiomeric composition of these compounds in the tobacco with that of fresh and dried strawberries, it can be concluded that non-natural strawberry aroma is usually used to produce strawberry-flavored tobacco products. Such authenticity control can become of interest particularly when manufacturers claim that natural sources were used for flavoring of products. Although the definition of characterizing flavors by analytical means remains challenging, specific compounds or features are required to be defined for routine screening of reported information. Clarifications by sensory testing might still be necessary, but could be limited to a few preselected samples.
Descriptors
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Book Title
Database
Publisher
Data Source
Authors
Paschke,M., Hutzler,C., Henkler,F., Luch,A.
Original/Translated Title
URL
Date of Electronic
20150703
PMCID
Editors