Online veröffentlicht: 28 May 2014 Seitenbereich: 159 - 179
Zusammenfassung
Abstract
This paper reviews
1.the plant phenols occurring in tobacco leaves, and 2.the phenols of tobacco smoke. These constituents are summarized in
2 tables. The leaf contains mainly quinic acid esters of hydroxy-cinnamic acids (chlorogenic acids), flavonol-glycosides, and hydroxy-coumarins. Main constituents are chlorogenic acid and rutin. Tobacco smoke does not contain these compounds, but a number of simpler phenols and phenol ethers, and phenolic acids. Besides this paper describes the transformation of plant phenols by the curing of tobacco, such as the formation of brown complex products from chlorogenic acid and rutin. Furthermore, the biosynthesis of plant phenols, their importance for the quality of tobacco, their phytopathological importance, and the effect of phenols occurring in tobacco leaves and tobacco smoke on the human organism are shortly reviewed
Online veröffentlicht: 28 May 2014 Seitenbereich: 205 - 208
Zusammenfassung
Abstract
The influence of tobacco moisture content on the yield of phenols in the mainstream smoke of a plain cigarette was studied. The yield of phenols calculated on the basis of dry weight of burnt tobacco decreases by 27 % over the range of moisture content adjustable by equilibrium.
Online veröffentlicht: 28 May 2014 Seitenbereich: 217 - 221
Zusammenfassung
Abstract
The quantity of tobacco which is necessary for the correct filling of a cigarette depends on different factors and particularly on the filling weight (apparent density) of tobacco rag at a given pressure. Some years ago the ''Centre d'Essais'' of the SEITA developed an apparatus by which the filling weight being related to the filling capacity can be measured. The present paper describes the apparatus and its working conditions and deals with the causes of errors by which the measurements can be influenced.
Online veröffentlicht: 28 May 2014 Seitenbereich: 223 - 230
Zusammenfassung
Abstract
The present paper reports on experiences gained, in practice, by the use of the statistic apparatus type 611 of the firm of Güttinger. By means of transmitting keys the transistorized calculating machine permits the determination of mean values and standard deviations of ten classes comprising 99 pieces each. It is demonstrated that several classes can combine and that piece numbers exceeding the mentioned limit can be adjusted by division without diminishing significantly the accuracy of the resulting values.
Online veröffentlicht: 28 May 2014 Seitenbereich: 231 - 236
Zusammenfassung
Abstract
The present paper deals with a nomograph by which rapid calculations can be made for the determination of the different parameters used for the characterization of cigarette populations
1.the plant phenols occurring in tobacco leaves, and 2.the phenols of tobacco smoke. These constituents are summarized in
2 tables. The leaf contains mainly quinic acid esters of hydroxy-cinnamic acids (chlorogenic acids), flavonol-glycosides, and hydroxy-coumarins. Main constituents are chlorogenic acid and rutin. Tobacco smoke does not contain these compounds, but a number of simpler phenols and phenol ethers, and phenolic acids. Besides this paper describes the transformation of plant phenols by the curing of tobacco, such as the formation of brown complex products from chlorogenic acid and rutin. Furthermore, the biosynthesis of plant phenols, their importance for the quality of tobacco, their phytopathological importance, and the effect of phenols occurring in tobacco leaves and tobacco smoke on the human organism are shortly reviewed
The influence of tobacco moisture content on the yield of phenols in the mainstream smoke of a plain cigarette was studied. The yield of phenols calculated on the basis of dry weight of burnt tobacco decreases by 27 % over the range of moisture content adjustable by equilibrium.
The quantity of tobacco which is necessary for the correct filling of a cigarette depends on different factors and particularly on the filling weight (apparent density) of tobacco rag at a given pressure. Some years ago the ''Centre d'Essais'' of the SEITA developed an apparatus by which the filling weight being related to the filling capacity can be measured. The present paper describes the apparatus and its working conditions and deals with the causes of errors by which the measurements can be influenced.
The present paper reports on experiences gained, in practice, by the use of the statistic apparatus type 611 of the firm of Güttinger. By means of transmitting keys the transistorized calculating machine permits the determination of mean values and standard deviations of ten classes comprising 99 pieces each. It is demonstrated that several classes can combine and that piece numbers exceeding the mentioned limit can be adjusted by division without diminishing significantly the accuracy of the resulting values.
The present paper deals with a nomograph by which rapid calculations can be made for the determination of the different parameters used for the characterization of cigarette populations