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Sorption Equilibrium Moisture Content of the Seeds of Several Tobacco Varieties

✍ Scribed by N.D. Menkov

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
134 KB
Volume
72
Category
Article
ISSN
0021-8634

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✦ Synopsis

The equilibrium moisture contents (EMC) were determined for seeds of seven tobacco varieties (four oriental, two Virginia and one Burley) at 25Β°C and nine relative humidities (RH) in the range of 0)11-0)84. It was established that for the different varieties the EMC values at the same RH were not statistically equal. The variation was more conspicuous at RH(0)6. The EMC values of the seeds of the investigated medium-leafed Oriental strains and Virginia tobaccos were quite similar. Five models -Chung-Pfost, Halsey, Oswin, Henderson and GAB (Guggenheim-Anderson-de Boer) equations were applied for analyzing the experimental data. The Oswin and GAB models were most suitable for describing the EMC/RH relationship.

1999 Silsoe Research Institute Notation df degrees of freedom EMC equilibrium moisture content, % d.b e residual, % d.b H statistical hypotheses M moisture content -measured, % d.b M K GH moisture content -predicted, % d.b M K variety mean moisture content, % d.b. N numer of data points RH relative humidity, decimal MRE mean relative error, % m , m degrees of freedom SEM standard error of moisture SD standard deviation

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