Formerly: Beiträge zur Tabakforschung International

Contributions to Tobacco & Nicotine Research

Contributions to Tob. Res. ONL

<abstract><title style='display:none'>Abstract</title> Cigarette smoke condensate which had been obtained by special methods was examined by means of the analytical method that transforms N-nitroso compounds into 5-nitro-2-hydroxy-benzal-derivatives in order to ascertain whether the said group of substances is formed.</abstract>

Abstract

Forschungslaboratorium H. F. &Ph. F. Reemtsma, Hamburg, Germany

<article-title>Examination of N-Nitroso Compounds in Tobacco Smoke / Zur Frage der N-Nitrosoverbindungen im Tabakrauch</article-title>

Examination of N-Nitroso Compounds in Tobacco Smoke / Zur Frage der N-Nitrosoverbindungen im Tabakrauch

<abstract><title style='display:none'>Abstract</title> A method for the determination of the steam-volatile non-pyridinic bases content of tobacco is described. 140 varieties of tobacco were examined. Burley tobaccos were found to contain 0.35 to 1.36 per cent of nitrogen in the form of low-boiling volatile amines. Oriental tobaccos contained 0.20 to 0.55 per cent and Virginia tobaccos of different origin contained 0.15 to 0.35 per cent. Methods of controlling the content of volatile bases in tobacco are discussed.</abstract>

Forschungslaboratorium H. F. & Ph. F. Reemtsma, Hamburg, Germany

<article-title>Examination of Volatile Bases in Tobacco / Untersuchung der Flüchtigen Basen des Tabaks</article-title>

Examination of Volatile Bases in Tobacco / Untersuchung der Flüchtigen Basen des Tabaks

<abstract><title style='display:none'>Abstract</title> Compared with other methods the nitrate determination by means of a photometric method using 3,4-dimethylphenol ("Maastricht") proved to be most suitable for tobacco. 134 varieties of raw tobacco were examined. Virginia tobaccos were found to be low in nitrate content. Generally they contain less than 0.1 % nitrate. Oriental tobaccos were found to contain between 0.2 and 0.4 % of nitrate, while the nitrate contents of Burley tobacco range from 1 to 5 %. Nitrates are enriched in the mid ribs of tobacco leaves. The formation of nitrogen oxides in tobacco smoke is probably due to the nitrate content of tobacco exclusively as is shown by a determination of nitrogen oxides in the smoke of a paper cigarette impregnated with ammonium oxalate. Possibilities are discussed for reducing the nitrate content of tobacco mixtures.</abstract>

<article-title>Determination of the Nitrate Content in Tobacco / Untersuchungen über den Nitratgehalt des Tabaks</article-title>

Determination of the Nitrate Content in Tobacco / Untersuchungen über den Nitratgehalt des Tabaks

<abstract><title style='display:none'>Abstract</title> The capacity of the six isomeric dimethylphenols to act as reagent for the quantitative determination of nitrate is examined. Only 3,4-dimethylphenol proved to be suitable for the distillation method which was found to be most appropriate to tobacco. Chromatographic and spectrophotometric investigations showed that the resultant reaction products from tobacco extracts are identical with the nitro-dimethylphenols originating from pure nitrate. The determination of tobacco nitrate by the described method is reproducible with a coefficient of variation of about 0.9 to 1.3 per cent. The results obtained by different laboratories coincided satisfactorily. Quantities of 0.1 per cent of nitrate can be determined without difficulties. The nitrate content depends strongly on the respective variety of cured tobacco leaf and varies from 0 to 6 per cent. Dark tobaccos are particularly rich in nitrate. Nitrate is mainly found in the ribs of tobacco leaves and in the lower leaves of the tobacco plant. The maximum quantity of nitrite contained in tobacco amounts to 0.01 per cent.</abstract>

Wissenschaftliche Abteilung der Martin Brinkmann AG, Bremen, Germany

<article-title>Determination of Nitrate and Nitrite Using Dimethylphenols as Reagents / Über die Anwendung der Dimethylphenole zur Bestimmung von Nitrat und Nitrit im Tabak</article-title>

Determination of Nitrate and Nitrite Using Dimethylphenols as Reagents / Über die Anwendung der Dimethylphenole zur Bestimmung von Nitrat und Nitrit im Tabak

<abstract><title style='display:none'>Abstract</title> The influence of tobacco moisture on the content of condensate, nicotine, and total phenols in the side stream smoke of a plain cigarette was studied. More condensate is formed from burned tobacco during the puff intervals than during the puffs themselves. With increasing moisture content the concentrations of nicotine and phenols rise in the side stream condensate and decrease in the mainstream condensate. This effect disappears by extrapolation to the moisture content zero. The total quantity of regained nicotine decreases with increasing moisture content. The formation of phenols decreases with increasing moisture content by about 20 per cent.</abstract>

Analytisches Laboratorium H. F. & Ph. F. Reemtsma, Hamburg, Germany

<article-title>The Influence of Tobacco Moisture Content of Cigarettes on the Composition of Mainstream Smoke Yield III /Einfluss des Feuchtigkeitsgehaltes von Cigaretten auf die Zusammensetzung des Rauches lll</article-title>

The Influence of Tobacco Moisture Content of Cigarettes on the Composition of Mainstream Smoke Yield III /Einfluss des Feuchtigkeitsgehaltes von Cigaretten auf die Zusammensetzung des Rauches lll

Contributions to Tobacco and Nicotine Research is covered by the following services: <ul> <li> Baidu Scholar </li> <li> Biobase </li> <li> CABI (over 50 subsections) </li> <li> Chemical Abstracts Service (CAS) - CAplus </li> <li> Chemical Abstracts Service (CAS) - SciFinder </li> <li> CNKI Scholar (China National Knowledge Infrastructure) </li> <li> CNPIEC - cnpLINKer </li> <li> Dimensions </li> <li> DOAJ (Directory of Open Access Journals) </li> <li> EBSCO </li> <li> ExLibris </li> <li> Genamics JournalSeek </li> <li> Google Scholar </li> <li> Japan Science and Technology Agency (JST) </li> <li> J-Gate </li> <li> JournalGuide </li> <li> JournalTOCs </li> <li> KESLI-NDSL (Korean National Discovery for Science Leaders) </li> <li> MyScienceWork </li> <li> Naver Academic </li> <li> Naviga (Softweco) </li> <li> ProQuest </li> <li> Publons </li> <li> QOAM (Quality Open Access Market) </li> <li> ReadCube </li> <li> SCImago (SJR) </li> <li> SCOPUS </li> <li> Semantic Scholar </li> <li> TDNet </li> <li> Ulrich's Periodicals Directory/ulrichsweb </li> <li> WanFang Data </li> <li> WorldCat (OCLC) </li> <li> X-MOL </li> </ul>

Contributions to Tobacco and Nicotine Research ist in den folgenden Services indiziert: <ul> <li> Baidu Scholar </li> <li> Biobase </li> <li> CABI (over 50 subsections) </li> <li> Chemical Abstracts Service (CAS) - CAplus </li> <li> Chemical Abstracts Service (CAS) - SciFinder </li> <li> CNKI Scholar (China National Knowledge Infrastructure) </li> <li> CNPIEC - cnpLINKer </li> <li> Dimensions </li> <li> DOAJ (Directory of Open Access Journals) </li> <li> EBSCO </li> <li> ExLibris </li> <li> Genamics JournalSeek </li> <li> Google Scholar </li> <li> Japan Science and Technology Agency (JST) </li> <li> J-Gate </li> <li> JournalGuide </li> <li> JournalTOCs </li> <li> KESLI-NDSL (Korean National Discovery for Science Leaders) </li> <li> MyScienceWork </li> <li> Naver Academic </li> <li> Naviga (Softweco) </li> <li> ProQuest </li> <li> Publons </li> <li> QOAM (Quality Open Access Market) </li> <li> ReadCube </li> <li> SCImago (SJR) </li> <li> SCOPUS </li> <li> Semantic Scholar </li> <li> TDNet </li> <li> Ulrich's Periodicals Directory/ulrichsweb </li> <li> WanFang Data </li> <li> WorldCat (OCLC) </li> <li> X-MOL </li> </ul>

Advisory Board　　　 Bernhard Eitzinger, delfortgroup AG, Traun, Austria Ernest Groman, University of Vienna, Vienna, Austria Daniel Heck, HeckTox LLC, Greensboro, NC, USA Anne Fisher, University of Kentucky, Lexington, KY, USA Xie Jianping, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China Hubert Klus, St. Pölten, Austria John H. Lauterbach, Lauterbach &amp; Associates LLC, Macon, GA, USA Ramsey Lewis, North Carolina State University, Raleigh, NC, USA Chuan Liu, Southampton, UK Michael W. Ogden, Ogden Ology, LLC, Lewisville, NC, USA Thilo Paschke, Japan Tobacco International SA, Geneva, Switzerland Stephen W. Purkis, Bristol, UK Elmar Richter, Walther Straub Institute, Department of Toxicology, Ludwig-Maximilians-University, Munich, Germany Wolfram Roeper, Hamburg, Germany Wolfgang Trinkies, Bayreuth, Germany　 Andreas Zemann, Leopold-Franzens-University of Innsbruck, Innsbruck, Austria Editors Wolf-Dieter Heller Gerhard Scherer Editorial Office Barbara Boenke Brigitte Müller Anja Thielen Contact <A href="mailto:editors@beitraege-bti.de">editors@beitraege-bti.de</A> Publisher De Gruyter Poland Bogumiła Zuga 32A Str. 01-811 Warsaw, Poland T: +48 22 701 50 15

<DIV align=left> Please submit your manuscripts to Contributions to Tobacco and Nicotine Research via Editorial Manager system to: <A href="http://www.editorialmanager.com/btfi">www.editorialmanager.com/btfi</A> Open Access License Dieses Werk ist lizenziert unter einer <A href="http://creativecommons.org/licenses/by-nc-sa/4.0/">Creative Commons Namensnennung - Nicht-kommerziell - Weitergabe unter gleichen Bedingungen 4.0 International Lizenz</A> (CC BY-NC-SA 4.0). Autoren, die in dieser Zeitschrift veröffentlichen, behalten alle Urheberrechte und stimmen den Bedingungen der oben genannten CC BY-NC-SA 4.0-Lizenz zu. </DIV>

Please submit your manuscripts to Contributions to Tobacco and Nicotine Research via Editorial Manager system to: <A href="http://www.editorialmanager.com/btfi">www.editorialmanager.com/btfi</A> Open Access Statement The journal is an Open Access journal that allows a free unlimited access to all its contents without any restrictions upon publication to all users. Copyright Policy All publications are licensed under a <A href="http://creativecommons.org/licenses/by-nc-sa/4.0/">Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License</A> (CC BY-NC-SA 4.0). Authors who publish with this journal retain all copyrights and agree to the terms of the above-mentioned CC BY-NC-SA 4.0 license. Article Processing Changes To publish in CTNR, authors are not required to pay an Article Processing Charge

Contributions to Tobacco and Nicotine Research (formerly: Beiträge zur Tabakforschung International / Contribution to Tobacco Research International) publishes articles with a focus on tobacco, nicotine, and related consumer products. In addition, all aspects of research on the tobacco plant as well as on product technology and manufacturing are relevant for the Journal. Products of interest comprise (i) combustible tobacco products (cigarettes, cigars, pipes, etc.), (ii) smokeless tobacco (SLT) products (snuff, snus, chewing tobacco, etc.), (iii) tobacco heating products (THP), (iv) electronic cigarettes (e-cigs, w/o nicotine), (v) oral nicotine delivery (OND) products. All scientific investigations on product-related properties (including physical, chemical, biological, and toxicological properties) as well as on the influence on consumers’ behavior and response (including acute and long-term product use patterns and biomarker profiles) are considered for publication. Submissions can be of the following types: original investigations, reviews, short reports commentaries, letters to the editor. Fields covered by the Journal <UL> <LI>Research into the tobacco plant </LI> <UL> <LI>Tobacco plant </LI> <LI>Metabolism </LI> <LI>Cultivation </LI> <LI>Pesticides Biotechnology (Plant pathology, Mycology, Microbiology) </LI> </UL></UL> <UL> <LI>Manufacture of tobacco products </LI> <UL> <LI>Processing of tobacco </LI> <LI>Flavor </LI> <LI>Manufacture of cigarettes and other products </LI> <LI>Tobacco and environment </LI> <LI>Chemical engineering including physical chemistry </LI> </UL></UL> <UL> <LI>Analysis and properties of tobacco smoke </LI> <UL> <LI>Physical properties </LI> <LI>Chemical properties </LI> <LI>Combustion studies </LI> <LI>Mainstream/sidestream smoke </LI> <LI>Filter studies </LI> <LI>Special substances </LI> <LI>Analytical methods </LI> <LI>Machine smoking </LI> </UL></UL> <UL> <LI>Tobacco products other than cigarettes </LI> <UL> <LI>Cigars / cigarillos </LI> <LI>Pipe tobacco </LI> <LI>Smokeless tobacco (SLT) products (snuff, snus, chewing tobacco) </LI></UL> <LI>New products </LI> <UL> <LI>Tobacco heating products (THP) </LI> <LI>Electronic cigarettes (e-cigs, w/o nicotine) </LI> <LI>Oral nicotine devices (OND, e.g., nicotine pouches) </LI> </UL></UL> <UL> <LI>Human smoking behavior </LI> <UL> <LI>Biomonitoring </LI> <LI>Consumer behavior </LI></UL></UL> Open Access Statement The journal is an Open Access journal that allows a free unlimited access to all its contents without any restrictions upon publication to all users. Archiving Sciendo archives the contents of this journal in <A href="https://www.portico.org/">Portico</A> - digital long-term preservation service of scholarly books, journals and collections. Plagiarism Policy The editorial board is participating in a growing community of <A href="https://www.crossref.org/services/similarity-check/">Similarity Check System's</A> users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process.

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Contributions to Tobacco & Nicotine Research

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Volume 2 (1964): Edizione 7 (November 1964)

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