Application of spectroscopic method to predict sugar content of sugarcane internodes

Nawi, N. M. and Jensen, T. and Chen, G. (2014) Application of spectroscopic method to predict sugar content of sugarcane internodes. Journal of Tropical Agriculture and Food Science, 41 (2). pp. 211-220. ISSN 1394-9829


The aim of this study was to investigate the potential of near-infrared (NIR)reflectance spectroscopy for predicting sugar content of sugarcane from internode samples. NIR spectral data were measured using a full-range spectroradiometer (FRS) in the wavelength region between 350 and 2,500 nm based on cross sectional scanning method (CSSM) and skin scanning method (SSM). Statistical models were developed using the partial least square (PLS) to interpret the spectral data and develop calibration model for the sugar content (Brix) of sugarcane. Both CSSM and SSM had good prediction accuracies in predicting Brix values, with the corresponding correlation of determination (R2) values
of 0.92 and 0.82 and root mean square error of prediction (RMSEP) of 1.03
and 1.50 Brix respectively. These results showed that the FRS can be used to predict the sugar content from internode samples using CSSM or SSM. However, CSSM was found to give better prediction accuracy than SSM. These findings showed that spectroscopic methods have the potential to be applied for rapid determination of sugar content from stalk samples in the fields.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Restricted access in accordance with publisher copyright policy.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - No Department
Date Deposited: 19 Aug 2014 12:18
Last Modified: 04 Jul 2016 06:16
Uncontrolled Keywords: sugarcane quality, Brix, stalk, cross sectional scanning method (CSSM), skin scanning method (SSM)
Fields of Research : 07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070105 Agricultural Systems Analysis and Modelling
Socio-Economic Objective: B Economic Development > 82 Plant Production and Plant Primary Products > 8206 Harvesting and Packing of Plant Products > 820603 Sugar Cane (Cut for Crushing)

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