Beitrage zur Tabakforschung International/ Contributions to Tobacco Research最新文献_第2页

A New Time-Regulating Mechanism for a Pipe-Smoking Machine 一种新型抽烟机时间调节机构

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1970-01-01 DOI: 10.2478/cttr-2013-0242

D. Schurer

引用次数: 0

The Determination of Tobacco Additives1st Report: A Method for the Qualitative and Quantitative Determination of Vanillin, Ethylvanillin, Coumarin and Dihydrocoumarin in Tobacco and Tobacco Products/Zur Bestimmung von Tabakadditiven: 1. Mitteilung: Eine Methode zur qualitativen und quantitativen Bes 烟草变更第1篇:用于确定香草的定性和量化手段的一种方法消息

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1970-01-01 DOI: 10.2478/cttr-2013-0252

E. Nesemann, F. Seehofer

引用次数: 0

Study on the Filling Differences in Cigarettes/Untersuchung über den fühlbaren Härteunterschied bei Cigaretten 在西加勒特斯(cigarters)研究西加勒产生的巨大痛苦差异

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1970-01-01 DOI: 10.2478/cttr-2013-0245

H. Böttcher

引用次数: 0

Response of Tobacco Root -Tip Cells to Various Sucker Control Chemicals 烟草根尖细胞对不同控烟剂的响应

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1969-12-01 DOI: 10.2478/cttr-2013-0229

T. Tso, L. G. Burk

{"title":"Response of Tobacco Root -Tip Cells to Various Sucker Control Chemicals","authors":"T. Tso, L. G. Burk","doi":"10.2478/cttr-2013-0229","DOIUrl":"https://doi.org/10.2478/cttr-2013-0229","url":null,"abstract":"Abstract Effects of sucker control chemicals on cell division and differentiation were studied by observing changes in root-tip cells continuously submerged in 5 × 10-3M solutions of MH-30 (maleic hydrazide), fatty ester T-43 (methyl caprate), fatty alcohol T-148 (mixture of 1-octanol and 1-decanol), Penar (dimethyldodecylamine acetate), and surfactants Tween-20 (polyoxyethylene sorbitan monolaurate) and Tween-80 (polyoxyethylene sorbitan monooleate). No adverse cytological effects were induced by surfactants. Meristematic cells treated with MH-30 appeared to be normal but there was no cell division. MH-30 also caused fragmentation or duplication of nuclei on differentiating cells. The effects of fatty materials (T-43 and T-148) include immediate swelling of the nucleus and then a general cessation of cell division. Penar caused enlargement of differentiating cells and nuclear fragmentation or duplication, a higher frequency of binucleate cells was found to be induced by Penar than T-148 or even MH-30. In general, sucker control compounds tested in this study induced a rather low incidence of endomitotic action which was limited to certain differentiating cells.","PeriodicalId":35431,"journal":{"name":"Beitrage zur Tabakforschung International/ Contributions to Tobacco Research","volume":"158 1","pages":"149 - 153"},"PeriodicalIF":0.0,"publicationDate":"1969-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86347266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temperature-Yield Profiles of Tobacco and Tobacco Constituents. II. Yields of Phenol and Cresols from Untreated and Borate-Treated Cellulose and Lignin 烟草及烟草成分的温度-产量特征。2未经处理和硼酸处理的纤维素和木质素中苯酚和甲酚的产率

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1969-12-01 DOI: 10.2478/cttr-2013-0227

J. F. Benner, H. Burton, D. Burdick

{"title":"Temperature-Yield Profiles of Tobacco and Tobacco Constituents. II. Yields of Phenol and Cresols from Untreated and Borate-Treated Cellulose and Lignin","authors":"J. F. Benner, H. Burton, D. Burdick","doi":"10.2478/cttr-2013-0227","DOIUrl":"https://doi.org/10.2478/cttr-2013-0227","url":null,"abstract":"Abstract The data obtained from the isothermal pyrolysis of untreated and borate-treated cellulose and lignin show that borate salts influence the yields of phenol, o-cresol, and m-,p-cresol from these two tobacco leaf constituents. The observed differences between the level of phenol from tobacco and borate-treated tobacco can be at least partially attributed to the effect of borate salts on the pyrolysis of lignin and cellulose. It must be emphasized, however, that the contribution of cellulose and lignin to the formation of phenol and cresols obtained from the pyrolysis of tobacco should not be quantitatively compared with the level of phenol and cresols obtained from the pyrolysis of pure cellulose and lignin. This is also true of borate-treated cellulose and borate-treated lignin. The main conclusion from this study is that borate salts do affect the recovery of phenol and cresols from leaf constituents such as lignin and cellulose and may be partially responsible for the increased levels of phenol obtained from the isothermal pyrolysis of borate-treated tobacco.","PeriodicalId":35431,"journal":{"name":"Beitrage zur Tabakforschung International/ Contributions to Tobacco Research","volume":"1 1","pages":"134 - 139"},"PeriodicalIF":0.0,"publicationDate":"1969-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90202301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Composition Studies on Tobacco XXXVIII: Evidence for the Origin of the High Molecular Weight, Acidic Pigment in Cigarette Smoke Condensate 烟草成分研究第三十八:卷烟烟气冷凝物中高分子量酸性色素来源的证据

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1969-12-01 DOI: 10.2478/cttr-2013-0223

R. Stedman, R. C. Benedict, M. Dymicky, D. G. Bailey

{"title":"Composition Studies on Tobacco XXXVIII: Evidence for the Origin of the High Molecular Weight, Acidic Pigment in Cigarette Smoke Condensate","authors":"R. Stedman, R. C. Benedict, M. Dymicky, D. G. Bailey","doi":"10.2478/cttr-2013-0223","DOIUrl":"https://doi.org/10.2478/cttr-2013-0223","url":null,"abstract":"Abstract The yields of acidic brown pigment isolated from cigarette smoke collected and stored under various conditions show no significant differences; however, some tendency may exist for a small increase in yield on extended storage of the condensate in traps at -79°C or in acetone solution at room temperature. The molecular weights of subfractions of the pigment are variable when the pigment is immediately isolated from freshly prepared condensate. Storage of condensate results in a higher proportion of high molecular weight subfraction in the pigment in all cases. Both leaf and condensate pigments sublime at high temperature and low pressure yielding a sublimate that contains some subfractions with molecular weights of the same general magnitude as those in the isolated condensate pigment. Nicotine may be acquired as a moiety in the condensate pigment through artifact reactions in the collection system or during the isolation. However, the nicotine acquired in this way apparently represents a very small amount of the total saponifiable nicotine in the pigment. The acetic acid moiety of the condensate pigment is not acquired by such artifact reactions. Although part of the condensate pigment structure may be formed through reactions in the collection system or during isolation, no evidence was obtained that the condensate pigment is largely an artifact.","PeriodicalId":35431,"journal":{"name":"Beitrage zur Tabakforschung International/ Contributions to Tobacco Research","volume":"30 1","pages":"97 - 103"},"PeriodicalIF":0.0,"publicationDate":"1969-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86106685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Determination of Semi-Volatiles in Cigarette Smoke by the Combination of Gas Chromatography with Mass Spectrometry/Analyse der „Semi-Volatiles“ aus Cigarettenrauch mit Hilfe einer Kombination von hochauflösender Gaschromatographie mit Massenspektrometrie 西加蕾特烟雾中发现的气体半频波动是由粒子探测仪和质谱仪相结合决定的

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1969-08-01 DOI: 10.2478/CTTR-2013-0216

K. Grob, J. Völlmin

引用次数: 1

Comparison of Smoke Condensate and Nicotine Yields Obtained from Three Different Smoking Machines I/ Vergleich der Rauchausbeuten von drei verschiedenen Rauchmaschinen l 三种不同烟机烟凝析液和烟碱产率的比较[j] / Vergleich der Rauchausbeuten von drei verschiedenen Rauchmaschinen

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1969-08-01 DOI: 10.2478/CTTR-2013-0214

G. Lipp

引用次数: 2

Herbicide Residues in Tobacco Leaves and their Transfer into the Smoke: Urea Herbicides Patoran® and Molipan® 烟草叶片中除草剂残留及其向烟雾中的转移:尿素除草剂Patoran®和Molipan®

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1969-08-01 DOI: 10.2478/cttr-2013-0221

R. Corbaz, A. Artho, P. Ceschini, M. Häusermann, J. Plantefève

{"title":"Herbicide Residues in Tobacco Leaves and their Transfer into the Smoke: Urea Herbicides Patoran® and Molipan®","authors":"R. Corbaz, A. Artho, P. Ceschini, M. Häusermann, J. Plantefève","doi":"10.2478/cttr-2013-0221","DOIUrl":"https://doi.org/10.2478/cttr-2013-0221","url":null,"abstract":"Abstract The herbicides Patoran ( = Metobromuron) and Molipan ( = Monolinuron + Linuron), when applied to the soil previous to planting in concentrations of 4 and 2.5 kgs/ha, respectively, were not toxic to the tobacco plant, but controlled most of the weeds except Veronica persica and Mercurialis annua. In the air-cured tobacco, the Patoran residue was about 1.2 ppm; it was independent of the leaf position and unchanged after fermentation, but higher in the laminae (1.2 ppm) than in the midrib (0.2 ppm). The Molipan residues were higher in the lower (2 ppm) than in the upper leaves (1 ppm) and decreased after fermentation by approximately 40 %; the laminae contained more residues than the midrib. When the tobacco was smoked as cigarettes about 4 % of the Patoran residue was transferred into the mainstream smoke; another 10 % was found in the smoke condensate after pyrolytical degradation to 4-bromoaniline. The transfer rates for the Molipan residues were 2.5 % for monolinuron (plus 10 % recovered as 4-chloroaniline) and 6 % for linuron (plus 20 % recovered as 3,4-dichloroaniline). The retention of these residues from the mainstream smoke by cellulose and cellulose acetate cigarette filters was of the same order of magnitude as the retention of nicotine. Different analytical principles were applied for the residue determinations in tobacco (as azo dyes by spectrophotometry) and in smoke condensate (as bromo-iodo- and chloro-iodo-benzenes by pulsed ECD gaschromatography). The analytical procedures are given in detail.","PeriodicalId":35431,"journal":{"name":"Beitrage zur Tabakforschung International/ Contributions to Tobacco Research","volume":"19 1","pages":"80 - 91"},"PeriodicalIF":0.0,"publicationDate":"1969-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89591133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A Fraction Trapping and Transfer Device for the Analysis of Cigarette Smoke 一种用于香烟烟雾分析的馏分捕获和传递装置

Beitrage zur Tabakforschung International/ Contributions to Tobacco Research Pub Date : 1969-08-01 DOI: 10.2478/cttr-2013-0215

J. Graham

引用次数: 0