By Helmut Wakeham (auth.), Irwin Schmeltz (eds.)

The current quantity includes a compilation of papers pre­ sented as a Symposium at the Chemical Composition of Tobacco and Tobacco Smoke in the course of a gathering of the yank Chemical Society in Washington, D. C., September 12-17, 1971. The Symposium used to be geared up to be able to hide, within the time disbursed, these features of tobacco examine which are either in line with­ tinent and suitable to the main difficult challenge dealing with learn­ ers within the box today--that is the advance of a much less threat­ ous cigarette. the trail to such an goal, even if, remains to be quite lengthy and never simply traversed. for instance, in choosing the probability linked to smok­ ing, one needs to first be aware of anything of the chemical composition of tobacco smoke, and additionally, how the smoke parts come up from many of the leaf parts. furthermore, bioassays of smoke fractions and parts therein are essential to determine noxlous components, and to correlate organic job with chemical composition. eventually, to accomplish the acknowledged goal, equipment must be built for removal the pointed out dangers from the smoke--whether they be through in particular cultivating tobacco vegetation, or by means of editing tobacco smoke by utilizing filters, ingredients or comparable devices.

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Additional info for The Chemistry of Tobacco and Tobacco Smoke: Proceedings of the Symposium on the Chemical Composition of Tobacco and Tobacco Smoke held during the 162nd National Meeting of the American Chemical Society in Washington, D.C., September 12–17, 1971

Sample text

Table 12 - Estimation of Smoke Tar of Sample Group II Est. 25793 Coef.

PROJECTED CHANGES IN THE COMPOSITION OF BRIGHT TOBACCO Figure 1. 37 The Long Harvester. Machines of this type are convenience devices; they only provide mobility for handharvesting. The machine pictured in Figure 3 is a mechanical harvester that was designed by engineers of the R. J. Reynolds Tobacco Company, Winston-Salem, N. C. With this one-row harvester, the single operator can move over the field at the rate of about 3/4 acre per hour. Three mechanical harvesters generally similar to the one shown here were available in limited numbers in 1971: ''The Roanoke" (Reynolds), Harrington Manufacturing Company, Lewiston, N.

Harvesting would be started as soon as the 4th leaf had attained minimum ripeness but, for the first two days, only four leaves would be harvested. On the third and fourth days, five leaves would be taken, and on days five and six, the full complement of six leaves would be gathered. Then, on the next go-round two weeks later, leaves 5 through 10 would be ready on the first group of plants, leaves 6 through 11 on the second, and leaves 7 through 12 on the third. Continuing, leaves 11 and 12 on the first group and the 12th leaf on the second would not be scheduled until the 5th week; more practically however, they would probably be included with the second harvest.

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