Abstract
In this paper, we present our study on the spectral discrimination between high
and low quality tobacco leaves using a time-resolved ultraweak luminescence
detection system. Photoinduced delayed luminescence (DL) is employed as a
nondestructive and objective indicator of tobacco leaf quality. DL decay
kinetics of tobacco leaf samples is measured, and the data are fitted by a
hyperbolic cosecant function. Results show that the function’s parameter
A is significantly related to the quality grades
of tobacco leaves—compared with the low quality tobacco leaves, an
increase of the A value by a factor of 7 is obtained for the high
quality tobacco leaves. Research from this work contributes to the development
of a novel optical method applicable for the quality evaluation of agricultural
crops and food products.
© 2013 Optical Society of America
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