<abstract xmlns="http://www.w3.org/1999/xhtml">The log10 (1/R) spectra, from 1.4 to 2.4 µm, of 152 samples of comminuted samples of tobacco were recorded on a computerized spectrophotometer. The parameter d2 (log (1/R)) / d λ2 was calculated for each spectrum and correlated with chemical analyses of total reducing sugars using the method proposed by Harvey et al. (12). A nine-term multiple-linear regression relating the above parameter at seven different wavelengths to total reducing sugar gave a correlation coefficient of 0.990 and a standard error of ± 1.15 percent. Instrument noise was found to contribute over 50 percent of the total variance.</abstract>

The log10 (1/R) spectra, from 1.4 to 2.4 µm, of 152 samples of comminuted samples of tobacco were recorded on a computerized spectrophotometer. The parameter d2 (log (1/R)) / d λ2 was calculated for each spectrum and correlated with chemical analyses of total reducing sugars using the method proposed by Harvey et al. (12). A nine-term multiple-linear regression relating the above parameter at seven different wavelengths to total reducing sugar gave a correlation coefficient of 0.990 and a standard error of ± 1.15 percent. Instrument noise was found to contribute over 50 percent of the total variance.

Rapid Spectrophotometric Analysis of the Chemical Composition of Tobacco: Part 1: Total Reducing Sugars

North Carolina State University, Department of Biological and Agricultural Engineering, Raleigh, North Carolina, U.S.A.

United States Department of Agriculture, Agricultural Research Service, Agricultural Research Center, Agricultural Marketing Research Institute, Instrumentation Research Laboratory, Beltsville, Maryland, U.S.A.

North Carolina State University, Department of Crop Science, Raleigh, North Carolina, U.S.A.

Contributions to Tobacco & Nicotine Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The log10 (1/R) spectra, from 1.4 to 2.4 µm, of 152 samples of comminuted samples of tobacco were recorded on a computerized spectrophotometer. The parameter...

Rapid Spectrophotometric Analysis of the Chemical Composition of Tobacco: Part 1: Total Reducing Sugars

Publié en ligne: 14 août 2014

Pages: 13 - 18

Reçu: 19 oct. 1976

DOI: https://doi.org/10.2478/cttr-2013-0421

© Beiträge zur Tabakforschung International

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.