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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Sugar Cane (Saccharum officinarum L.) Analysis through Biospeckle and Spectroscopy (NIR)
Author(s)
Matheus Sevillano Marcondes1, Keylla Guiguer Silva1, Armando Kazuo Fujii1, Ronei Jesus Poppi2 and Juliana Aparecida Fracarolli1
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DOI:10.17265/2161-6264/2017.01.006
Affiliation(s)
1. Department of Pre-processing Agricultural Products, School of Agricultural Engineering, University of Campinas, Campinas, São Paulo 13083875, Brazil
2. Department of Analytical Chemistry, Institute of Chemistry, University of Campinas, Campinas, São Paulo 13083970, Brazil
ABSTRACT
The objective of this paper
was to evaluate the sugar and water content in sugar cane samples by means of
two non-destructive techniques in comparison with conventional methods. One
non-destructive technique is the Biospeckle, an interaction between the laser
and the biological material which provides information about the material. The
other technique is the near infrared spectroscopy (NIR). The Biospeckle
technique has been constantly used in agricultural engineering. In this paper,
the relation between the water and the sugar contents were obtained. The
results for the Biospeckle were acquired through the moment of inertia (MI). The data
acquired through already consolidated methodologies were used to quantify the
samples’ water and sugar contents, correlating to the spectroscopy results and
also to the Biospeckle. It was obtained a high determination coefficient (R2 = 0.9287) between the
predicted Brix by the model generated by NIR spectroscopy and Brix measured by
refractometer. It was also possible to differentiate the water contents of the
sugar cane samples both
externally lit (husk) and internally lit (cut) by Biospeckle analysis through
the calculation of MI. It is possible to evaluate the water content and the
sugar content in samples combining Biospeckle and NIR spectroscopy, which are
non-invasive and non-destructive methods.
KEYWORDS
Sugar content, water content, non-destructive analysis, dynamic speckle, image processing, laser.
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