Variation in Coloring Rates of Tobacco
- 25 April 1952
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 115 (2991) , 466-468
- https://doi.org/10.1126/science.115.2991.466
Abstract
The transformation of the field-grown green tobacco leaf to the yellow-orange tobacco of commerce occurs in the curing barn through the enzymatic destruction of chlorophyll and the resultant unmasking of the yellow carotenoid pigments. This coloring is accomplished during the first 30-60 hr. of the curing sequence. The progress of coloring serves as the basis for advancing the temp, and ventilation schedule, and has previously been judged visually by the curing barn operator. A new instrument, termed a reflectometer or "Yellowmeter, " measures increasing yellowness positively, and removes the element of visual error for this critical evaluation. The use of this instrument is described.Keywords
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